/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain OctagonDomain -i ../sv-benchmarks/c/product-lines/minepump_spec4_product44.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-03 01:06:07,202 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-03 01:06:07,205 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-03 01:06:07,244 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-03 01:06:07,245 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-03 01:06:07,247 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-03 01:06:07,250 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-03 01:06:07,252 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-03 01:06:07,253 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-03 01:06:07,258 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-03 01:06:07,259 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-03 01:06:07,260 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-03 01:06:07,260 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-03 01:06:07,263 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-03 01:06:07,264 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-03 01:06:07,266 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-03 01:06:07,266 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-03 01:06:07,267 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-03 01:06:07,269 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-03 01:06:07,275 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-03 01:06:07,276 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-03 01:06:07,277 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-03 01:06:07,278 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-03 01:06:07,279 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-03 01:06:07,287 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-03 01:06:07,287 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-03 01:06:07,288 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-03 01:06:07,288 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-03 01:06:07,288 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-03 01:06:07,289 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-03 01:06:07,289 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-03 01:06:07,290 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-03 01:06:07,290 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-03 01:06:07,291 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-03 01:06:07,291 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-03 01:06:07,292 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-03 01:06:07,292 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-03 01:06:07,292 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-03 01:06:07,296 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-03 01:06:07,298 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-03 01:06:07,299 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-03 01:06:07,300 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-03 01:06:07,328 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-03 01:06:07,329 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-03 01:06:07,329 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-03 01:06:07,329 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-03 01:06:07,330 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-03 01:06:07,330 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-03 01:06:07,330 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-03 01:06:07,330 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-03 01:06:07,330 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-03 01:06:07,330 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-03 01:06:07,331 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-03 01:06:07,331 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-03 01:06:07,331 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-03 01:06:07,332 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-03 01:06:07,332 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-03 01:06:07,332 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-03 01:06:07,332 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-03 01:06:07,332 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-03 01:06:07,332 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-03 01:06:07,333 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-03 01:06:07,333 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-03 01:06:07,333 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-03 01:06:07,333 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-03 01:06:07,333 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-03 01:06:07,333 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-03 01:06:07,333 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-03 01:06:07,333 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-03 01:06:07,333 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-03 01:06:07,334 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-03 01:06:07,334 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-03 01:06:07,334 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-03 01:06:07,334 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-03 01:06:07,334 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 01:06:07,334 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-03 01:06:07,334 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-03 01:06:07,335 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-03 01:06:07,335 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-03 01:06:07,335 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-03 01:06:07,335 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-03 01:06:07,335 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-03 01:06:07,335 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-03 01:06:07,335 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-03 01:06:07,553 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-03 01:06:07,577 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-03 01:06:07,579 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-03 01:06:07,580 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-03 01:06:07,581 INFO L275 PluginConnector]: CDTParser initialized [2023-04-03 01:06:07,582 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec4_product44.cil.c [2023-04-03 01:06:08,751 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-03 01:06:08,983 INFO L351 CDTParser]: Found 1 translation units. [2023-04-03 01:06:08,984 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec4_product44.cil.c [2023-04-03 01:06:08,993 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d071e1abd/8c65645b69694019ad9b6def3f8b830e/FLAGf4615cb3b [2023-04-03 01:06:09,004 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d071e1abd/8c65645b69694019ad9b6def3f8b830e [2023-04-03 01:06:09,007 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-03 01:06:09,008 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-03 01:06:09,009 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-03 01:06:09,009 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-03 01:06:09,012 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-03 01:06:09,012 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 01:06:09" (1/1) ... [2023-04-03 01:06:09,013 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ab44265 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:06:09, skipping insertion in model container [2023-04-03 01:06:09,013 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 01:06:09" (1/1) ... [2023-04-03 01:06:09,019 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-03 01:06:09,057 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-03 01:06:09,244 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec4_product44.cil.c[15806,15819] [2023-04-03 01:06:09,258 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 01:06:09,285 INFO L203 MainTranslator]: Completed pre-run [2023-04-03 01:06:09,355 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec4_product44.cil.c[15806,15819] [2023-04-03 01:06:09,359 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 01:06:09,374 INFO L208 MainTranslator]: Completed translation [2023-04-03 01:06:09,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:06:09 WrapperNode [2023-04-03 01:06:09,375 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-03 01:06:09,376 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-03 01:06:09,376 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-03 01:06:09,376 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-03 01:06:09,386 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:06:09" (1/1) ... [2023-04-03 01:06:09,386 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:06:09" (1/1) ... [2023-04-03 01:06:09,408 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:06:09" (1/1) ... [2023-04-03 01:06:09,408 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:06:09" (1/1) ... [2023-04-03 01:06:09,440 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:06:09" (1/1) ... [2023-04-03 01:06:09,456 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:06:09" (1/1) ... [2023-04-03 01:06:09,459 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:06:09" (1/1) ... [2023-04-03 01:06:09,461 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:06:09" (1/1) ... [2023-04-03 01:06:09,465 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-03 01:06:09,466 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-03 01:06:09,466 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-03 01:06:09,466 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-03 01:06:09,467 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:06:09" (1/1) ... [2023-04-03 01:06:09,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 01:06:09,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 01:06:09,495 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-03 01:06:09,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-03 01:06:09,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-03 01:06:09,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-03 01:06:09,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2023-04-03 01:06:09,526 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-03 01:06:09,527 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2023-04-03 01:06:09,527 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2023-04-03 01:06:09,527 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2023-04-03 01:06:09,527 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2023-04-03 01:06:09,527 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2023-04-03 01:06:09,527 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2023-04-03 01:06:09,527 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2023-04-03 01:06:09,527 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2023-04-03 01:06:09,528 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2023-04-03 01:06:09,528 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2023-04-03 01:06:09,528 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2023-04-03 01:06:09,528 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2023-04-03 01:06:09,528 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-04-03 01:06:09,528 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2023-04-03 01:06:09,528 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2023-04-03 01:06:09,529 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2023-04-03 01:06:09,529 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2023-04-03 01:06:09,529 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2023-04-03 01:06:09,529 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2023-04-03 01:06:09,529 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2023-04-03 01:06:09,529 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2023-04-03 01:06:09,529 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2023-04-03 01:06:09,529 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2023-04-03 01:06:09,529 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2023-04-03 01:06:09,530 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-04-03 01:06:09,530 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-04-03 01:06:09,530 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2023-04-03 01:06:09,530 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2023-04-03 01:06:09,530 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2023-04-03 01:06:09,530 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-03 01:06:09,530 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2023-04-03 01:06:09,530 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2023-04-03 01:06:09,530 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2023-04-03 01:06:09,531 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2023-04-03 01:06:09,531 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2023-04-03 01:06:09,531 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2023-04-03 01:06:09,531 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2023-04-03 01:06:09,531 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-03 01:06:09,531 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-03 01:06:09,531 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-03 01:06:09,531 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-03 01:06:09,532 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-03 01:06:09,532 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2023-04-03 01:06:09,532 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-04-03 01:06:09,532 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2023-04-03 01:06:09,532 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2023-04-03 01:06:09,532 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2023-04-03 01:06:09,532 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-03 01:06:09,533 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-03 01:06:09,533 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2023-04-03 01:06:09,533 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-03 01:06:09,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-03 01:06:09,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-03 01:06:09,533 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-03 01:06:09,533 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2023-04-03 01:06:09,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-03 01:06:09,534 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2023-04-03 01:06:09,534 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2023-04-03 01:06:09,534 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-03 01:06:09,534 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2023-04-03 01:06:09,534 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2023-04-03 01:06:09,534 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2023-04-03 01:06:09,534 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2023-04-03 01:06:09,534 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2023-04-03 01:06:09,535 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2023-04-03 01:06:09,535 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2023-04-03 01:06:09,535 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2023-04-03 01:06:09,535 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2023-04-03 01:06:09,535 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2023-04-03 01:06:09,535 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2023-04-03 01:06:09,535 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-04-03 01:06:09,535 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-04-03 01:06:09,535 INFO L130 BoogieDeclarations]: Found specification of procedure test [2023-04-03 01:06:09,536 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2023-04-03 01:06:09,536 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2023-04-03 01:06:09,536 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2023-04-03 01:06:09,536 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2023-04-03 01:06:09,536 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2023-04-03 01:06:09,536 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2023-04-03 01:06:09,536 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2023-04-03 01:06:09,536 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2023-04-03 01:06:09,537 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2023-04-03 01:06:09,537 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2023-04-03 01:06:09,537 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2023-04-03 01:06:09,537 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2023-04-03 01:06:09,537 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2023-04-03 01:06:09,537 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2023-04-03 01:06:09,537 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2023-04-03 01:06:09,537 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-03 01:06:09,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-03 01:06:09,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-03 01:06:09,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-03 01:06:09,677 INFO L236 CfgBuilder]: Building ICFG [2023-04-03 01:06:09,681 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-03 01:06:10,217 INFO L277 CfgBuilder]: Performing block encoding [2023-04-03 01:06:10,341 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-03 01:06:10,341 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-04-03 01:06:10,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 01:06:10 BoogieIcfgContainer [2023-04-03 01:06:10,345 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-03 01:06:10,347 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-03 01:06:10,348 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-03 01:06:10,350 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-03 01:06:10,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.04 01:06:09" (1/3) ... [2023-04-03 01:06:10,351 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e003f94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 01:06:10, skipping insertion in model container [2023-04-03 01:06:10,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:06:09" (2/3) ... [2023-04-03 01:06:10,351 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e003f94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 01:06:10, skipping insertion in model container [2023-04-03 01:06:10,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 01:06:10" (3/3) ... [2023-04-03 01:06:10,353 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product44.cil.c [2023-04-03 01:06:10,367 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-03 01:06:10,368 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-03 01:06:10,423 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-03 01:06:10,429 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;@64449661, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-03 01:06:10,430 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-03 01:06:10,434 INFO L276 IsEmpty]: Start isEmpty. Operand has 146 states, 67 states have (on average 1.2686567164179106) internal successors, (85), 81 states have internal predecessors, (85), 46 states have call successors, (46), 30 states have call predecessors, (46), 30 states have return successors, (46), 43 states have call predecessors, (46), 46 states have call successors, (46) [2023-04-03 01:06:10,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-04-03 01:06:10,443 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:06:10,444 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 01:06:10,446 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:06:10,453 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:06:10,454 INFO L85 PathProgramCache]: Analyzing trace with hash -2065255042, now seen corresponding path program 1 times [2023-04-03 01:06:10,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:06:10,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580974018] [2023-04-03 01:06:10,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:06:10,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:06:10,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:06:10,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 01:06:10,677 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:06:10,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580974018] [2023-04-03 01:06:10,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580974018] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:06:10,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:06:10,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-04-03 01:06:10,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867087266] [2023-04-03 01:06:10,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:06:10,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-04-03 01:06:10,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:06:10,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-04-03 01:06:10,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-03 01:06:10,725 INFO L87 Difference]: Start difference. First operand has 146 states, 67 states have (on average 1.2686567164179106) internal successors, (85), 81 states have internal predecessors, (85), 46 states have call successors, (46), 30 states have call predecessors, (46), 30 states have return successors, (46), 43 states have call predecessors, (46), 46 states have call successors, (46) Second operand has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-04-03 01:06:10,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:06:10,813 INFO L93 Difference]: Finished difference Result 225 states and 268 transitions. [2023-04-03 01:06:10,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-04-03 01:06:10,816 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 42 [2023-04-03 01:06:10,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:06:10,825 INFO L225 Difference]: With dead ends: 225 [2023-04-03 01:06:10,825 INFO L226 Difference]: Without dead ends: 113 [2023-04-03 01:06:10,829 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 [2023-04-03 01:06:10,834 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-03 01:06:10,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 121 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-03 01:06:10,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2023-04-03 01:06:10,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2023-04-03 01:06:10,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 58 states have (on average 1.2241379310344827) internal successors, (71), 69 states have internal predecessors, (71), 31 states have call successors, (31), 28 states have call predecessors, (31), 23 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2023-04-03 01:06:10,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 128 transitions. [2023-04-03 01:06:10,900 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 128 transitions. Word has length 42 [2023-04-03 01:06:10,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:06:10,900 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 128 transitions. [2023-04-03 01:06:10,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-04-03 01:06:10,901 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 128 transitions. [2023-04-03 01:06:10,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-04-03 01:06:10,903 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:06:10,903 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 01:06:10,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-03 01:06:10,903 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:06:10,904 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:06:10,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1552403923, now seen corresponding path program 1 times [2023-04-03 01:06:10,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:06:10,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137307553] [2023-04-03 01:06:10,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:06:10,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:06:10,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:06:11,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 01:06:11,021 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:06:11,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137307553] [2023-04-03 01:06:11,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137307553] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:06:11,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:06:11,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 01:06:11,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198353593] [2023-04-03 01:06:11,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:06:11,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 01:06:11,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:06:11,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 01:06:11,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 01:06:11,025 INFO L87 Difference]: Start difference. First operand 113 states and 128 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-04-03 01:06:11,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:06:11,059 INFO L93 Difference]: Finished difference Result 171 states and 192 transitions. [2023-04-03 01:06:11,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 01:06:11,060 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 43 [2023-04-03 01:06:11,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:06:11,061 INFO L225 Difference]: With dead ends: 171 [2023-04-03 01:06:11,061 INFO L226 Difference]: Without dead ends: 105 [2023-04-03 01:06:11,062 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 [2023-04-03 01:06:11,063 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 11 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-03 01:06:11,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 185 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-03 01:06:11,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2023-04-03 01:06:11,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2023-04-03 01:06:11,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 53 states have (on average 1.2264150943396226) internal successors, (65), 64 states have internal predecessors, (65), 28 states have call successors, (28), 27 states have call predecessors, (28), 23 states have return successors, (24), 21 states have call predecessors, (24), 24 states have call successors, (24) [2023-04-03 01:06:11,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 117 transitions. [2023-04-03 01:06:11,074 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 117 transitions. Word has length 43 [2023-04-03 01:06:11,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:06:11,075 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 117 transitions. [2023-04-03 01:06:11,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-04-03 01:06:11,075 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 117 transitions. [2023-04-03 01:06:11,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-04-03 01:06:11,076 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:06:11,076 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, 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] [2023-04-03 01:06:11,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-03 01:06:11,077 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:06:11,077 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:06:11,077 INFO L85 PathProgramCache]: Analyzing trace with hash -110599171, now seen corresponding path program 1 times [2023-04-03 01:06:11,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:06:11,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866818314] [2023-04-03 01:06:11,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:06:11,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:06:11,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:06:11,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 01:06:11,319 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:06:11,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866818314] [2023-04-03 01:06:11,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866818314] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:06:11,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:06:11,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-03 01:06:11,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506608708] [2023-04-03 01:06:11,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:06:11,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-03 01:06:11,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:06:11,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-03 01:06:11,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-04-03 01:06:11,322 INFO L87 Difference]: Start difference. First operand 105 states and 117 transitions. Second operand has 7 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 4 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-04-03 01:06:11,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:06:11,633 INFO L93 Difference]: Finished difference Result 316 states and 367 transitions. [2023-04-03 01:06:11,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-03 01:06:11,634 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 4 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 47 [2023-04-03 01:06:11,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:06:11,645 INFO L225 Difference]: With dead ends: 316 [2023-04-03 01:06:11,645 INFO L226 Difference]: Without dead ends: 233 [2023-04-03 01:06:11,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-04-03 01:06:11,652 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 184 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-03 01:06:11,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 490 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-03 01:06:11,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2023-04-03 01:06:11,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 211. [2023-04-03 01:06:11,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 114 states have (on average 1.2543859649122806) internal successors, (143), 133 states have internal predecessors, (143), 51 states have call successors, (51), 49 states have call predecessors, (51), 45 states have return successors, (48), 43 states have call predecessors, (48), 47 states have call successors, (48) [2023-04-03 01:06:11,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 242 transitions. [2023-04-03 01:06:11,681 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 242 transitions. Word has length 47 [2023-04-03 01:06:11,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:06:11,682 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 242 transitions. [2023-04-03 01:06:11,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 4 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-04-03 01:06:11,682 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 242 transitions. [2023-04-03 01:06:11,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-04-03 01:06:11,684 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:06:11,684 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 01:06:11,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-03 01:06:11,684 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:06:11,685 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:06:11,685 INFO L85 PathProgramCache]: Analyzing trace with hash -171749128, now seen corresponding path program 1 times [2023-04-03 01:06:11,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:06:11,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841339459] [2023-04-03 01:06:11,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:06:11,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:06:11,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:06:11,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 01:06:11,929 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:06:11,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841339459] [2023-04-03 01:06:11,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841339459] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:06:11,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:06:11,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-03 01:06:11,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230927814] [2023-04-03 01:06:11,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:06:11,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-03 01:06:11,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:06:11,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-03 01:06:11,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-04-03 01:06:11,931 INFO L87 Difference]: Start difference. First operand 211 states and 242 transitions. Second operand has 10 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 4 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-04-03 01:06:12,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:06:12,271 INFO L93 Difference]: Finished difference Result 739 states and 890 transitions. [2023-04-03 01:06:12,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 01:06:12,271 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 4 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 51 [2023-04-03 01:06:12,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:06:12,275 INFO L225 Difference]: With dead ends: 739 [2023-04-03 01:06:12,275 INFO L226 Difference]: Without dead ends: 550 [2023-04-03 01:06:12,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2023-04-03 01:06:12,277 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 205 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-03 01:06:12,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 645 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-03 01:06:12,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2023-04-03 01:06:12,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 526. [2023-04-03 01:06:12,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 295 states have (on average 1.2542372881355932) internal successors, (370), 341 states have internal predecessors, (370), 120 states have call successors, (120), 114 states have call predecessors, (120), 110 states have return successors, (127), 104 states have call predecessors, (127), 116 states have call successors, (127) [2023-04-03 01:06:12,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 617 transitions. [2023-04-03 01:06:12,339 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 617 transitions. Word has length 51 [2023-04-03 01:06:12,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:06:12,339 INFO L495 AbstractCegarLoop]: Abstraction has 526 states and 617 transitions. [2023-04-03 01:06:12,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 4 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-04-03 01:06:12,340 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 617 transitions. [2023-04-03 01:06:12,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-04-03 01:06:12,349 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:06:12,349 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 01:06:12,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-03 01:06:12,349 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:06:12,349 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:06:12,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1275540565, now seen corresponding path program 1 times [2023-04-03 01:06:12,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:06:12,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302049775] [2023-04-03 01:06:12,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:06:12,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:06:12,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:06:12,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 01:06:12,473 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:06:12,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302049775] [2023-04-03 01:06:12,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302049775] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:06:12,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:06:12,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-03 01:06:12,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604465894] [2023-04-03 01:06:12,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:06:12,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-03 01:06:12,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:06:12,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-03 01:06:12,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-03 01:06:12,476 INFO L87 Difference]: Start difference. First operand 526 states and 617 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 3 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2023-04-03 01:06:12,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:06:12,710 INFO L93 Difference]: Finished difference Result 1361 states and 1735 transitions. [2023-04-03 01:06:12,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 01:06:12,712 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 3 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 54 [2023-04-03 01:06:12,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:06:12,719 INFO L225 Difference]: With dead ends: 1361 [2023-04-03 01:06:12,720 INFO L226 Difference]: Without dead ends: 857 [2023-04-03 01:06:12,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-03 01:06:12,724 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 141 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-03 01:06:12,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 108 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-03 01:06:12,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 857 states. [2023-04-03 01:06:12,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 857 to 752. [2023-04-03 01:06:12,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 752 states, 433 states have (on average 1.2217090069284064) internal successors, (529), 479 states have internal predecessors, (529), 155 states have call successors, (155), 153 states have call predecessors, (155), 163 states have return successors, (202), 154 states have call predecessors, (202), 151 states have call successors, (202) [2023-04-03 01:06:12,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 752 states to 752 states and 886 transitions. [2023-04-03 01:06:12,841 INFO L78 Accepts]: Start accepts. Automaton has 752 states and 886 transitions. Word has length 54 [2023-04-03 01:06:12,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:06:12,841 INFO L495 AbstractCegarLoop]: Abstraction has 752 states and 886 transitions. [2023-04-03 01:06:12,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 3 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2023-04-03 01:06:12,842 INFO L276 IsEmpty]: Start isEmpty. Operand 752 states and 886 transitions. [2023-04-03 01:06:12,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-04-03 01:06:12,844 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:06:12,844 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 01:06:12,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-03 01:06:12,845 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:06:12,845 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:06:12,845 INFO L85 PathProgramCache]: Analyzing trace with hash 702351345, now seen corresponding path program 1 times [2023-04-03 01:06:12,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:06:12,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134619448] [2023-04-03 01:06:12,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:06:12,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:06:12,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:06:13,022 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-04-03 01:06:13,022 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:06:13,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134619448] [2023-04-03 01:06:13,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134619448] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-03 01:06:13,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962118745] [2023-04-03 01:06:13,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:06:13,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 01:06:13,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 01:06:13,029 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-03 01:06:13,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-03 01:06:13,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:06:13,180 INFO L262 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 51 conjunts are in the unsatisfiable core [2023-04-03 01:06:13,190 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-03 01:06:13,555 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-04-03 01:06:13,555 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-03 01:06:14,058 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-03 01:06:14,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [962118745] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-03 01:06:14,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1355600223] [2023-04-03 01:06:14,083 INFO L159 IcfgInterpreter]: Started Sifa with 59 locations of interest [2023-04-03 01:06:14,083 INFO L166 IcfgInterpreter]: Building call graph [2023-04-03 01:06:14,087 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-03 01:06:14,091 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-03 01:06:14,092 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-03 01:06:14,327 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 28 for LOIs [2023-04-03 01:06:14,366 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 32 for LOIs [2023-04-03 01:06:14,543 INFO L197 IcfgInterpreter]: Interpreting procedure runTest with input of size 32 for LOIs [2023-04-03 01:06:14,560 INFO L197 IcfgInterpreter]: Interpreting procedure setup with input of size 24 for LOIs [2023-04-03 01:06:14,563 INFO L197 IcfgInterpreter]: Interpreting procedure select_features with input of size 24 for LOIs [2023-04-03 01:06:14,567 INFO L197 IcfgInterpreter]: Interpreting procedure test with input of size 32 for LOIs [2023-04-03 01:06:19,664 INFO L197 IcfgInterpreter]: Interpreting procedure stopSystem with input of size 37 for LOIs [2023-04-03 01:06:19,673 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 46 for LOIs [2023-04-03 01:06:19,681 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 28 for LOIs [2023-04-03 01:06:19,788 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification4_spec__1 with input of size 22 for LOIs [2023-04-03 01:06:19,825 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 24 for LOIs [2023-04-03 01:06:19,828 INFO L197 IcfgInterpreter]: Interpreting procedure getWaterLevel with input of size 22 for LOIs [2023-04-03 01:06:19,830 INFO L197 IcfgInterpreter]: Interpreting procedure valid_product with input of size 24 for LOIs [2023-04-03 01:06:19,832 INFO L197 IcfgInterpreter]: Interpreting procedure select_helpers with input of size 24 for LOIs [2023-04-03 01:06:19,834 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-03 01:06:22,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1355600223] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:06:22,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-04-03 01:06:22,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [7, 14, 12] total 62 [2023-04-03 01:06:22,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168147276] [2023-04-03 01:06:22,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:06:22,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-04-03 01:06:22,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:06:22,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-04-03 01:06:22,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=390, Invalid=3392, Unknown=0, NotChecked=0, Total=3782 [2023-04-03 01:06:22,524 INFO L87 Difference]: Start difference. First operand 752 states and 886 transitions. Second operand has 36 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 28 states have internal predecessors, (34), 11 states have call successors, (15), 9 states have call predecessors, (15), 9 states have return successors, (11), 10 states have call predecessors, (11), 9 states have call successors, (11) [2023-04-03 01:06:39,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:06:39,641 INFO L93 Difference]: Finished difference Result 2386 states and 2977 transitions. [2023-04-03 01:06:39,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2023-04-03 01:06:39,642 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 28 states have internal predecessors, (34), 11 states have call successors, (15), 9 states have call predecessors, (15), 9 states have return successors, (11), 10 states have call predecessors, (11), 9 states have call successors, (11) Word has length 79 [2023-04-03 01:06:39,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:06:39,651 INFO L225 Difference]: With dead ends: 2386 [2023-04-03 01:06:39,651 INFO L226 Difference]: Without dead ends: 1656 [2023-04-03 01:06:39,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10024 ImplicationChecksByTransitivity, 15.9s TimeCoverageRelationStatistics Valid=3627, Invalid=26475, Unknown=0, NotChecked=0, Total=30102 [2023-04-03 01:06:39,666 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 956 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 5999 mSolverCounterSat, 725 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 967 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 6724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 725 IncrementalHoareTripleChecker+Valid, 5999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-04-03 01:06:39,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [967 Valid, 442 Invalid, 6724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [725 Valid, 5999 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-04-03 01:06:39,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1656 states. [2023-04-03 01:06:39,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1656 to 1363. [2023-04-03 01:06:39,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1363 states, 810 states have (on average 1.2185185185185186) internal successors, (987), 887 states have internal predecessors, (987), 275 states have call successors, (275), 265 states have call predecessors, (275), 277 states have return successors, (348), 267 states have call predecessors, (348), 271 states have call successors, (348) [2023-04-03 01:06:39,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1363 states to 1363 states and 1610 transitions. [2023-04-03 01:06:39,866 INFO L78 Accepts]: Start accepts. Automaton has 1363 states and 1610 transitions. Word has length 79 [2023-04-03 01:06:39,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:06:39,868 INFO L495 AbstractCegarLoop]: Abstraction has 1363 states and 1610 transitions. [2023-04-03 01:06:39,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 28 states have internal predecessors, (34), 11 states have call successors, (15), 9 states have call predecessors, (15), 9 states have return successors, (11), 10 states have call predecessors, (11), 9 states have call successors, (11) [2023-04-03 01:06:39,868 INFO L276 IsEmpty]: Start isEmpty. Operand 1363 states and 1610 transitions. [2023-04-03 01:06:39,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-04-03 01:06:39,876 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:06:39,876 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 01:06:39,883 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-04-03 01:06:40,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-04-03 01:06:40,077 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:06:40,078 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:06:40,078 INFO L85 PathProgramCache]: Analyzing trace with hash 554009165, now seen corresponding path program 1 times [2023-04-03 01:06:40,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:06:40,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843916284] [2023-04-03 01:06:40,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:06:40,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:06:40,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:06:40,271 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-04-03 01:06:40,271 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:06:40,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843916284] [2023-04-03 01:06:40,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843916284] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-03 01:06:40,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325343312] [2023-04-03 01:06:40,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:06:40,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 01:06:40,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 01:06:40,273 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-03 01:06:40,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-03 01:06:40,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:06:40,383 INFO L262 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 51 conjunts are in the unsatisfiable core [2023-04-03 01:06:40,388 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-03 01:06:40,612 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-04-03 01:06:40,613 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-03 01:06:41,029 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-03 01:06:41,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [325343312] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-03 01:06:41,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1735213561] [2023-04-03 01:06:41,032 INFO L159 IcfgInterpreter]: Started Sifa with 62 locations of interest [2023-04-03 01:06:41,032 INFO L166 IcfgInterpreter]: Building call graph [2023-04-03 01:06:41,032 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-03 01:06:41,032 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-03 01:06:41,033 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-03 01:06:41,110 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 28 for LOIs [2023-04-03 01:06:41,126 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 32 for LOIs [2023-04-03 01:06:41,222 INFO L197 IcfgInterpreter]: Interpreting procedure runTest with input of size 32 for LOIs [2023-04-03 01:06:41,231 INFO L197 IcfgInterpreter]: Interpreting procedure setup with input of size 24 for LOIs [2023-04-03 01:06:41,233 INFO L197 IcfgInterpreter]: Interpreting procedure select_features with input of size 24 for LOIs [2023-04-03 01:06:41,234 INFO L197 IcfgInterpreter]: Interpreting procedure test with input of size 32 for LOIs [2023-04-03 01:06:47,773 INFO L197 IcfgInterpreter]: Interpreting procedure stopSystem with input of size 49 for LOIs [2023-04-03 01:06:47,786 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 56 for LOIs [2023-04-03 01:06:47,791 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 32 for LOIs [2023-04-03 01:06:47,857 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification4_spec__1 with input of size 24 for LOIs [2023-04-03 01:06:47,891 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 26 for LOIs [2023-04-03 01:06:47,893 INFO L197 IcfgInterpreter]: Interpreting procedure getWaterLevel with input of size 24 for LOIs [2023-04-03 01:06:47,894 INFO L197 IcfgInterpreter]: Interpreting procedure changeMethaneLevel with input of size 53 for LOIs [2023-04-03 01:06:47,902 INFO L197 IcfgInterpreter]: Interpreting procedure valid_product with input of size 24 for LOIs [2023-04-03 01:06:47,904 INFO L197 IcfgInterpreter]: Interpreting procedure select_helpers with input of size 24 for LOIs [2023-04-03 01:06:47,906 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-03 01:06:51,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1735213561] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:06:51,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-04-03 01:06:51,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [7, 14, 12] total 65 [2023-04-03 01:06:51,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412478301] [2023-04-03 01:06:51,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:06:51,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-04-03 01:06:51,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:06:51,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-04-03 01:06:51,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=401, Invalid=3759, Unknown=0, NotChecked=0, Total=4160 [2023-04-03 01:06:51,953 INFO L87 Difference]: Start difference. First operand 1363 states and 1610 transitions. Second operand has 39 states, 25 states have (on average 1.44) internal successors, (36), 30 states have internal predecessors, (36), 12 states have call successors, (16), 10 states have call predecessors, (16), 10 states have return successors, (12), 11 states have call predecessors, (12), 10 states have call successors, (12) [2023-04-03 01:07:44,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:07:44,645 INFO L93 Difference]: Finished difference Result 4483 states and 6197 transitions. [2023-04-03 01:07:44,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 277 states. [2023-04-03 01:07:44,645 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 25 states have (on average 1.44) internal successors, (36), 30 states have internal predecessors, (36), 12 states have call successors, (16), 10 states have call predecessors, (16), 10 states have return successors, (12), 11 states have call predecessors, (12), 10 states have call successors, (12) Word has length 82 [2023-04-03 01:07:44,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:07:44,663 INFO L225 Difference]: With dead ends: 4483 [2023-04-03 01:07:44,663 INFO L226 Difference]: Without dead ends: 3747 [2023-04-03 01:07:44,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 532 GetRequests, 195 SyntacticMatches, 1 SemanticMatches, 336 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44177 ImplicationChecksByTransitivity, 48.4s TimeCoverageRelationStatistics Valid=9706, Invalid=104200, Unknown=0, NotChecked=0, Total=113906 [2023-04-03 01:07:44,681 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 2491 mSDsluCounter, 1208 mSDsCounter, 0 mSdLazyCounter, 12241 mSolverCounterSat, 2061 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2500 SdHoareTripleChecker+Valid, 1397 SdHoareTripleChecker+Invalid, 14302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2061 IncrementalHoareTripleChecker+Valid, 12241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2023-04-03 01:07:44,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2500 Valid, 1397 Invalid, 14302 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2061 Valid, 12241 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2023-04-03 01:07:44,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3747 states. [2023-04-03 01:07:44,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3747 to 1457. [2023-04-03 01:07:44,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1457 states, 855 states have (on average 1.2140350877192982) internal successors, (1038), 949 states have internal predecessors, (1038), 301 states have call successors, (301), 288 states have call predecessors, (301), 300 states have return successors, (377), 292 states have call predecessors, (377), 297 states have call successors, (377) [2023-04-03 01:07:44,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1457 states to 1457 states and 1716 transitions. [2023-04-03 01:07:44,961 INFO L78 Accepts]: Start accepts. Automaton has 1457 states and 1716 transitions. Word has length 82 [2023-04-03 01:07:44,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:07:44,962 INFO L495 AbstractCegarLoop]: Abstraction has 1457 states and 1716 transitions. [2023-04-03 01:07:44,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 25 states have (on average 1.44) internal successors, (36), 30 states have internal predecessors, (36), 12 states have call successors, (16), 10 states have call predecessors, (16), 10 states have return successors, (12), 11 states have call predecessors, (12), 10 states have call successors, (12) [2023-04-03 01:07:44,962 INFO L276 IsEmpty]: Start isEmpty. Operand 1457 states and 1716 transitions. [2023-04-03 01:07:44,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-04-03 01:07:44,964 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:07:44,964 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 01:07:44,970 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-04-03 01:07:45,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-04-03 01:07:45,171 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:07:45,171 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:07:45,171 INFO L85 PathProgramCache]: Analyzing trace with hash -34078073, now seen corresponding path program 1 times [2023-04-03 01:07:45,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:07:45,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802634852] [2023-04-03 01:07:45,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:07:45,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:07:45,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:07:45,395 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-04-03 01:07:45,395 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:07:45,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802634852] [2023-04-03 01:07:45,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802634852] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-03 01:07:45,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654531063] [2023-04-03 01:07:45,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:07:45,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 01:07:45,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 01:07:45,397 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-03 01:07:45,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-03 01:07:45,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:07:45,508 INFO L262 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 51 conjunts are in the unsatisfiable core [2023-04-03 01:07:45,513 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-03 01:07:45,714 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-04-03 01:07:45,714 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-03 01:07:46,097 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-03 01:07:46,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1654531063] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-03 01:07:46,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1995487213] [2023-04-03 01:07:46,100 INFO L159 IcfgInterpreter]: Started Sifa with 79 locations of interest [2023-04-03 01:07:46,100 INFO L166 IcfgInterpreter]: Building call graph [2023-04-03 01:07:46,100 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-03 01:07:46,100 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-03 01:07:46,100 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-03 01:07:46,183 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 28 for LOIs [2023-04-03 01:07:46,205 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 32 for LOIs [2023-04-03 01:07:46,293 INFO L197 IcfgInterpreter]: Interpreting procedure runTest with input of size 32 for LOIs [2023-04-03 01:07:46,301 INFO L197 IcfgInterpreter]: Interpreting procedure setup with input of size 24 for LOIs [2023-04-03 01:07:46,302 INFO L197 IcfgInterpreter]: Interpreting procedure select_features with input of size 24 for LOIs [2023-04-03 01:07:46,304 INFO L197 IcfgInterpreter]: Interpreting procedure test with input of size 32 for LOIs [2023-04-03 01:07:50,938 INFO L197 IcfgInterpreter]: Interpreting procedure stopSystem with input of size 37 for LOIs [2023-04-03 01:07:50,943 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 48 for LOIs [2023-04-03 01:07:50,948 INFO L197 IcfgInterpreter]: Interpreting procedure startSystem with input of size 35 for LOIs [2023-04-03 01:07:50,951 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 31 for LOIs [2023-04-03 01:07:51,085 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification4_spec__1 with input of size 25 for LOIs [2023-04-03 01:07:51,151 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 28 for LOIs [2023-04-03 01:07:51,154 INFO L197 IcfgInterpreter]: Interpreting procedure getWaterLevel with input of size 25 for LOIs [2023-04-03 01:07:51,159 INFO L197 IcfgInterpreter]: Interpreting procedure valid_product with input of size 24 for LOIs [2023-04-03 01:07:51,161 INFO L197 IcfgInterpreter]: Interpreting procedure select_helpers with input of size 24 for LOIs [2023-04-03 01:07:51,163 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment with input of size 30 for LOIs [2023-04-03 01:07:51,216 INFO L197 IcfgInterpreter]: Interpreting procedure isHighWaterLevel with input of size 28 for LOIs [2023-04-03 01:07:51,269 INFO L197 IcfgInterpreter]: Interpreting procedure isHighWaterSensorDry with input of size 28 for LOIs [2023-04-03 01:07:51,273 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 26 for LOIs [2023-04-03 01:07:51,275 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-03 01:07:54,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1995487213] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:07:54,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-04-03 01:07:54,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [7, 14, 12] total 72 [2023-04-03 01:07:54,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305455220] [2023-04-03 01:07:54,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:07:54,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-04-03 01:07:54,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:07:54,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-04-03 01:07:54,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=482, Invalid=4630, Unknown=0, NotChecked=0, Total=5112 [2023-04-03 01:07:54,957 INFO L87 Difference]: Start difference. First operand 1457 states and 1716 transitions. Second operand has 46 states, 30 states have (on average 1.5) internal successors, (45), 35 states have internal predecessors, (45), 16 states have call successors, (20), 12 states have call predecessors, (20), 14 states have return successors, (16), 14 states have call predecessors, (16), 14 states have call successors, (16) [2023-04-03 01:08:13,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:08:13,827 INFO L93 Difference]: Finished difference Result 2775 states and 3347 transitions. [2023-04-03 01:08:13,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2023-04-03 01:08:13,827 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 30 states have (on average 1.5) internal successors, (45), 35 states have internal predecessors, (45), 16 states have call successors, (20), 12 states have call predecessors, (20), 14 states have return successors, (16), 14 states have call predecessors, (16), 14 states have call successors, (16) Word has length 98 [2023-04-03 01:08:13,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:08:13,836 INFO L225 Difference]: With dead ends: 2775 [2023-04-03 01:08:13,836 INFO L226 Difference]: Without dead ends: 2161 [2023-04-03 01:08:13,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 232 SyntacticMatches, 7 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8866 ImplicationChecksByTransitivity, 18.7s TimeCoverageRelationStatistics Valid=3539, Invalid=24853, Unknown=0, NotChecked=0, Total=28392 [2023-04-03 01:08:13,840 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 1585 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 6581 mSolverCounterSat, 1237 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1594 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 7818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1237 IncrementalHoareTripleChecker+Valid, 6581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-04-03 01:08:13,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1594 Valid, 369 Invalid, 7818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1237 Valid, 6581 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-04-03 01:08:13,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2161 states. [2023-04-03 01:08:14,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2161 to 1932. [2023-04-03 01:08:14,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1932 states, 1148 states have (on average 1.2081881533101044) internal successors, (1387), 1264 states have internal predecessors, (1387), 392 states have call successors, (392), 379 states have call predecessors, (392), 391 states have return successors, (486), 377 states have call predecessors, (486), 388 states have call successors, (486) [2023-04-03 01:08:14,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1932 states to 1932 states and 2265 transitions. [2023-04-03 01:08:14,201 INFO L78 Accepts]: Start accepts. Automaton has 1932 states and 2265 transitions. Word has length 98 [2023-04-03 01:08:14,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:08:14,202 INFO L495 AbstractCegarLoop]: Abstraction has 1932 states and 2265 transitions. [2023-04-03 01:08:14,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 30 states have (on average 1.5) internal successors, (45), 35 states have internal predecessors, (45), 16 states have call successors, (20), 12 states have call predecessors, (20), 14 states have return successors, (16), 14 states have call predecessors, (16), 14 states have call successors, (16) [2023-04-03 01:08:14,202 INFO L276 IsEmpty]: Start isEmpty. Operand 1932 states and 2265 transitions. [2023-04-03 01:08:14,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-04-03 01:08:14,208 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:08:14,208 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 01:08:14,215 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-03 01:08:14,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 01:08:14,415 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:08:14,415 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:08:14,415 INFO L85 PathProgramCache]: Analyzing trace with hash -2078125397, now seen corresponding path program 1 times [2023-04-03 01:08:14,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:08:14,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489439238] [2023-04-03 01:08:14,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:08:14,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:08:14,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:08:14,603 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-04-03 01:08:14,603 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:08:14,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489439238] [2023-04-03 01:08:14,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489439238] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-03 01:08:14,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [961968177] [2023-04-03 01:08:14,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:08:14,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 01:08:14,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 01:08:14,605 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-03 01:08:14,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-03 01:08:14,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:08:14,714 INFO L262 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 51 conjunts are in the unsatisfiable core [2023-04-03 01:08:14,717 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-03 01:08:14,931 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-04-03 01:08:14,931 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-03 01:08:15,309 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-03 01:08:15,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [961968177] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-03 01:08:15,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1810728480] [2023-04-03 01:08:15,312 INFO L159 IcfgInterpreter]: Started Sifa with 82 locations of interest [2023-04-03 01:08:15,312 INFO L166 IcfgInterpreter]: Building call graph [2023-04-03 01:08:15,313 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-03 01:08:15,313 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-03 01:08:15,313 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-03 01:08:15,396 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 28 for LOIs [2023-04-03 01:08:15,419 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 32 for LOIs [2023-04-03 01:08:15,507 INFO L197 IcfgInterpreter]: Interpreting procedure runTest with input of size 32 for LOIs [2023-04-03 01:08:15,513 INFO L197 IcfgInterpreter]: Interpreting procedure setup with input of size 24 for LOIs [2023-04-03 01:08:15,514 INFO L197 IcfgInterpreter]: Interpreting procedure select_features with input of size 24 for LOIs [2023-04-03 01:08:15,515 INFO L197 IcfgInterpreter]: Interpreting procedure test with input of size 32 for LOIs [2023-04-03 01:08:21,389 INFO L197 IcfgInterpreter]: Interpreting procedure stopSystem with input of size 49 for LOIs [2023-04-03 01:08:21,401 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 58 for LOIs [2023-04-03 01:08:21,407 INFO L197 IcfgInterpreter]: Interpreting procedure startSystem with input of size 47 for LOIs [2023-04-03 01:08:21,412 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 37 for LOIs [2023-04-03 01:08:21,548 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification4_spec__1 with input of size 27 for LOIs [2023-04-03 01:08:21,625 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 34 for LOIs [2023-04-03 01:08:21,631 INFO L197 IcfgInterpreter]: Interpreting procedure getWaterLevel with input of size 27 for LOIs [2023-04-03 01:08:21,636 INFO L197 IcfgInterpreter]: Interpreting procedure changeMethaneLevel with input of size 53 for LOIs [2023-04-03 01:08:21,642 INFO L197 IcfgInterpreter]: Interpreting procedure valid_product with input of size 24 for LOIs [2023-04-03 01:08:21,643 INFO L197 IcfgInterpreter]: Interpreting procedure select_helpers with input of size 24 for LOIs [2023-04-03 01:08:21,644 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment with input of size 36 for LOIs [2023-04-03 01:08:21,712 INFO L197 IcfgInterpreter]: Interpreting procedure isHighWaterLevel with input of size 34 for LOIs [2023-04-03 01:08:21,773 INFO L197 IcfgInterpreter]: Interpreting procedure isHighWaterSensorDry with input of size 34 for LOIs [2023-04-03 01:08:21,779 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 32 for LOIs [2023-04-03 01:08:21,781 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-03 01:08:27,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1810728480] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:08:27,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-04-03 01:08:27,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [7, 14, 12] total 75 [2023-04-03 01:08:27,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501814339] [2023-04-03 01:08:27,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:08:27,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-04-03 01:08:27,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:08:27,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-04-03 01:08:27,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=494, Invalid=5056, Unknown=0, NotChecked=0, Total=5550 [2023-04-03 01:08:27,423 INFO L87 Difference]: Start difference. First operand 1932 states and 2265 transitions. Second operand has 49 states, 31 states have (on average 1.5161290322580645) internal successors, (47), 37 states have internal predecessors, (47), 17 states have call successors, (21), 13 states have call predecessors, (21), 15 states have return successors, (17), 15 states have call predecessors, (17), 15 states have call successors, (17) [2023-04-03 01:09:09,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:09:09,614 INFO L93 Difference]: Finished difference Result 3759 states and 4927 transitions. [2023-04-03 01:09:09,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 193 states. [2023-04-03 01:09:09,615 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 31 states have (on average 1.5161290322580645) internal successors, (47), 37 states have internal predecessors, (47), 17 states have call successors, (21), 13 states have call predecessors, (21), 15 states have return successors, (17), 15 states have call predecessors, (17), 15 states have call successors, (17) Word has length 101 [2023-04-03 01:09:09,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:09:09,628 INFO L225 Difference]: With dead ends: 3759 [2023-04-03 01:09:09,628 INFO L226 Difference]: Without dead ends: 3145 [2023-04-03 01:09:09,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 507 GetRequests, 237 SyntacticMatches, 8 SemanticMatches, 262 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24457 ImplicationChecksByTransitivity, 39.8s TimeCoverageRelationStatistics Valid=6708, Invalid=62724, Unknown=0, NotChecked=0, Total=69432 [2023-04-03 01:09:09,636 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 3396 mSDsluCounter, 1410 mSDsCounter, 0 mSdLazyCounter, 12342 mSolverCounterSat, 2707 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3405 SdHoareTripleChecker+Valid, 1559 SdHoareTripleChecker+Invalid, 15049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2707 IncrementalHoareTripleChecker+Valid, 12342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2023-04-03 01:09:09,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3405 Valid, 1559 Invalid, 15049 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2707 Valid, 12342 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2023-04-03 01:09:09,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3145 states. [2023-04-03 01:09:09,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3145 to 1031. [2023-04-03 01:09:09,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1031 states, 598 states have (on average 1.2107023411371238) internal successors, (724), 663 states have internal predecessors, (724), 212 states have call successors, (212), 208 states have call predecessors, (212), 220 states have return successors, (270), 210 states have call predecessors, (270), 208 states have call successors, (270) [2023-04-03 01:09:09,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1206 transitions. [2023-04-03 01:09:09,877 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1206 transitions. Word has length 101 [2023-04-03 01:09:09,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:09:09,878 INFO L495 AbstractCegarLoop]: Abstraction has 1031 states and 1206 transitions. [2023-04-03 01:09:09,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 31 states have (on average 1.5161290322580645) internal successors, (47), 37 states have internal predecessors, (47), 17 states have call successors, (21), 13 states have call predecessors, (21), 15 states have return successors, (17), 15 states have call predecessors, (17), 15 states have call successors, (17) [2023-04-03 01:09:09,878 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1206 transitions. [2023-04-03 01:09:09,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-04-03 01:09:09,880 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:09:09,880 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 01:09:09,889 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-04-03 01:09:10,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 01:09:10,085 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:09:10,085 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:09:10,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1644476715, now seen corresponding path program 1 times [2023-04-03 01:09:10,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:09:10,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849119001] [2023-04-03 01:09:10,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:09:10,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:09:10,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:09:10,201 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-04-03 01:09:10,201 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:09:10,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849119001] [2023-04-03 01:09:10,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849119001] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:09:10,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:09:10,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 01:09:10,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170537864] [2023-04-03 01:09:10,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:09:10,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 01:09:10,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:09:10,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 01:09:10,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-04-03 01:09:10,203 INFO L87 Difference]: Start difference. First operand 1031 states and 1206 transitions. Second operand has 9 states, 8 states have (on average 7.625) internal successors, (61), 7 states have internal predecessors, (61), 4 states have call successors, (26), 3 states have call predecessors, (26), 4 states have return successors, (20), 5 states have call predecessors, (20), 4 states have call successors, (20) [2023-04-03 01:09:10,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:09:10,739 INFO L93 Difference]: Finished difference Result 1806 states and 2138 transitions. [2023-04-03 01:09:10,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-03 01:09:10,741 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.625) internal successors, (61), 7 states have internal predecessors, (61), 4 states have call successors, (26), 3 states have call predecessors, (26), 4 states have return successors, (20), 5 states have call predecessors, (20), 4 states have call successors, (20) Word has length 109 [2023-04-03 01:09:10,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:09:10,745 INFO L225 Difference]: With dead ends: 1806 [2023-04-03 01:09:10,746 INFO L226 Difference]: Without dead ends: 1070 [2023-04-03 01:09:10,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2023-04-03 01:09:10,748 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 200 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-03 01:09:10,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 454 Invalid, 762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-03 01:09:10,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1070 states. [2023-04-03 01:09:10,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1070 to 1011. [2023-04-03 01:09:10,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1011 states, 590 states have (on average 1.194915254237288) internal successors, (705), 653 states have internal predecessors, (705), 204 states have call successors, (204), 202 states have call predecessors, (204), 216 states have return successors, (233), 204 states have call predecessors, (233), 200 states have call successors, (233) [2023-04-03 01:09:10,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1011 states to 1011 states and 1142 transitions. [2023-04-03 01:09:10,927 INFO L78 Accepts]: Start accepts. Automaton has 1011 states and 1142 transitions. Word has length 109 [2023-04-03 01:09:10,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:09:10,927 INFO L495 AbstractCegarLoop]: Abstraction has 1011 states and 1142 transitions. [2023-04-03 01:09:10,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.625) internal successors, (61), 7 states have internal predecessors, (61), 4 states have call successors, (26), 3 states have call predecessors, (26), 4 states have return successors, (20), 5 states have call predecessors, (20), 4 states have call successors, (20) [2023-04-03 01:09:10,927 INFO L276 IsEmpty]: Start isEmpty. Operand 1011 states and 1142 transitions. [2023-04-03 01:09:10,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-04-03 01:09:10,931 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:09:10,931 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 01:09:10,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-03 01:09:10,931 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:09:10,932 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:09:10,932 INFO L85 PathProgramCache]: Analyzing trace with hash 534982260, now seen corresponding path program 1 times [2023-04-03 01:09:10,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:09:10,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627078322] [2023-04-03 01:09:10,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:09:10,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:09:10,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:09:11,248 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-04-03 01:09:11,249 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:09:11,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627078322] [2023-04-03 01:09:11,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627078322] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-03 01:09:11,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [358092396] [2023-04-03 01:09:11,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:09:11,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 01:09:11,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 01:09:11,250 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-03 01:09:11,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-04-03 01:09:11,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:09:11,372 INFO L262 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 33 conjunts are in the unsatisfiable core [2023-04-03 01:09:11,375 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-03 01:09:11,667 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 01:09:11,668 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-03 01:09:11,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [358092396] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:09:11,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-03 01:09:11,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [14] total 26 [2023-04-03 01:09:11,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228257277] [2023-04-03 01:09:11,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:09:11,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-03 01:09:11,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:09:11,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-03 01:09:11,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2023-04-03 01:09:11,670 INFO L87 Difference]: Start difference. First operand 1011 states and 1142 transitions. Second operand has 14 states, 11 states have (on average 5.818181818181818) internal successors, (64), 11 states have internal predecessors, (64), 6 states have call successors, (26), 5 states have call predecessors, (26), 7 states have return successors, (20), 7 states have call predecessors, (20), 6 states have call successors, (20) [2023-04-03 01:09:12,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:09:12,800 INFO L93 Difference]: Finished difference Result 2316 states and 2695 transitions. [2023-04-03 01:09:12,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-04-03 01:09:12,800 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 5.818181818181818) internal successors, (64), 11 states have internal predecessors, (64), 6 states have call successors, (26), 5 states have call predecessors, (26), 7 states have return successors, (20), 7 states have call predecessors, (20), 6 states have call successors, (20) Word has length 110 [2023-04-03 01:09:12,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:09:12,805 INFO L225 Difference]: With dead ends: 2316 [2023-04-03 01:09:12,805 INFO L226 Difference]: Without dead ends: 1327 [2023-04-03 01:09:12,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 510 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=248, Invalid=1732, Unknown=0, NotChecked=0, Total=1980 [2023-04-03 01:09:12,809 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 230 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 1499 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 1616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 1499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-03 01:09:12,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 429 Invalid, 1616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 1499 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-03 01:09:12,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1327 states. [2023-04-03 01:09:13,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1327 to 1237. [2023-04-03 01:09:13,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1237 states, 742 states have (on average 1.196765498652291) internal successors, (888), 810 states have internal predecessors, (888), 247 states have call successors, (247), 247 states have call predecessors, (247), 247 states have return successors, (285), 242 states have call predecessors, (285), 243 states have call successors, (285) [2023-04-03 01:09:13,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1237 states to 1237 states and 1420 transitions. [2023-04-03 01:09:13,119 INFO L78 Accepts]: Start accepts. Automaton has 1237 states and 1420 transitions. Word has length 110 [2023-04-03 01:09:13,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:09:13,119 INFO L495 AbstractCegarLoop]: Abstraction has 1237 states and 1420 transitions. [2023-04-03 01:09:13,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 5.818181818181818) internal successors, (64), 11 states have internal predecessors, (64), 6 states have call successors, (26), 5 states have call predecessors, (26), 7 states have return successors, (20), 7 states have call predecessors, (20), 6 states have call successors, (20) [2023-04-03 01:09:13,120 INFO L276 IsEmpty]: Start isEmpty. Operand 1237 states and 1420 transitions. [2023-04-03 01:09:13,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-04-03 01:09:13,122 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:09:13,122 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 01:09:13,129 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-04-03 01:09:13,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-04-03 01:09:13,330 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:09:13,330 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:09:13,330 INFO L85 PathProgramCache]: Analyzing trace with hash 405624286, now seen corresponding path program 1 times [2023-04-03 01:09:13,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:09:13,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390004366] [2023-04-03 01:09:13,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:09:13,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:09:13,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:09:13,633 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-04-03 01:09:13,633 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:09:13,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390004366] [2023-04-03 01:09:13,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390004366] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:09:13,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:09:13,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-04-03 01:09:13,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683152607] [2023-04-03 01:09:13,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:09:13,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-03 01:09:13,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:09:13,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-03 01:09:13,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-04-03 01:09:13,636 INFO L87 Difference]: Start difference. First operand 1237 states and 1420 transitions. Second operand has 14 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 3 states have call successors, (25), 3 states have call predecessors, (25), 6 states have return successors, (20), 7 states have call predecessors, (20), 3 states have call successors, (20) [2023-04-03 01:09:14,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:09:14,076 INFO L93 Difference]: Finished difference Result 1895 states and 2227 transitions. [2023-04-03 01:09:14,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-03 01:09:14,076 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 3 states have call successors, (25), 3 states have call predecessors, (25), 6 states have return successors, (20), 7 states have call predecessors, (20), 3 states have call successors, (20) Word has length 111 [2023-04-03 01:09:14,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:09:14,080 INFO L225 Difference]: With dead ends: 1895 [2023-04-03 01:09:14,080 INFO L226 Difference]: Without dead ends: 1388 [2023-04-03 01:09:14,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2023-04-03 01:09:14,083 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 197 mSDsluCounter, 826 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 922 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 01:09:14,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 922 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 01:09:14,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1388 states. [2023-04-03 01:09:14,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1388 to 1277. [2023-04-03 01:09:14,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1277 states, 770 states have (on average 1.1974025974025975) internal successors, (922), 841 states have internal predecessors, (922), 253 states have call successors, (253), 253 states have call predecessors, (253), 253 states have return successors, (293), 247 states have call predecessors, (293), 249 states have call successors, (293) [2023-04-03 01:09:14,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1277 states to 1277 states and 1468 transitions. [2023-04-03 01:09:14,377 INFO L78 Accepts]: Start accepts. Automaton has 1277 states and 1468 transitions. Word has length 111 [2023-04-03 01:09:14,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:09:14,378 INFO L495 AbstractCegarLoop]: Abstraction has 1277 states and 1468 transitions. [2023-04-03 01:09:14,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 3 states have call successors, (25), 3 states have call predecessors, (25), 6 states have return successors, (20), 7 states have call predecessors, (20), 3 states have call successors, (20) [2023-04-03 01:09:14,378 INFO L276 IsEmpty]: Start isEmpty. Operand 1277 states and 1468 transitions. [2023-04-03 01:09:14,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-04-03 01:09:14,380 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:09:14,380 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 01:09:14,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-03 01:09:14,380 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:09:14,381 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:09:14,381 INFO L85 PathProgramCache]: Analyzing trace with hash -205203886, now seen corresponding path program 1 times [2023-04-03 01:09:14,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:09:14,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372532541] [2023-04-03 01:09:14,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:09:14,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:09:14,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:09:14,466 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-04-03 01:09:14,467 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:09:14,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372532541] [2023-04-03 01:09:14,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372532541] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:09:14,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:09:14,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-03 01:09:14,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987499531] [2023-04-03 01:09:14,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:09:14,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-03 01:09:14,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:09:14,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-03 01:09:14,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-03 01:09:14,468 INFO L87 Difference]: Start difference. First operand 1277 states and 1468 transitions. Second operand has 6 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 3 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2023-04-03 01:09:14,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:09:14,893 INFO L93 Difference]: Finished difference Result 1292 states and 1482 transitions. [2023-04-03 01:09:14,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-03 01:09:14,894 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 3 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) Word has length 112 [2023-04-03 01:09:14,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:09:14,899 INFO L225 Difference]: With dead ends: 1292 [2023-04-03 01:09:14,899 INFO L226 Difference]: Without dead ends: 1289 [2023-04-03 01:09:14,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-04-03 01:09:14,900 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 91 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 01:09:14,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 393 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 01:09:14,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1289 states. [2023-04-03 01:09:15,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1289 to 1277. [2023-04-03 01:09:15,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1277 states, 770 states have (on average 1.190909090909091) internal successors, (917), 841 states have internal predecessors, (917), 253 states have call successors, (253), 253 states have call predecessors, (253), 253 states have return successors, (293), 247 states have call predecessors, (293), 249 states have call successors, (293) [2023-04-03 01:09:15,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1277 states to 1277 states and 1463 transitions. [2023-04-03 01:09:15,209 INFO L78 Accepts]: Start accepts. Automaton has 1277 states and 1463 transitions. Word has length 112 [2023-04-03 01:09:15,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:09:15,210 INFO L495 AbstractCegarLoop]: Abstraction has 1277 states and 1463 transitions. [2023-04-03 01:09:15,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 3 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2023-04-03 01:09:15,210 INFO L276 IsEmpty]: Start isEmpty. Operand 1277 states and 1463 transitions. [2023-04-03 01:09:15,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-04-03 01:09:15,212 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:09:15,212 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 01:09:15,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-04-03 01:09:15,212 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:09:15,213 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:09:15,213 INFO L85 PathProgramCache]: Analyzing trace with hash -837899870, now seen corresponding path program 1 times [2023-04-03 01:09:15,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:09:15,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013730010] [2023-04-03 01:09:15,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:09:15,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:09:15,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:09:15,612 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-04-03 01:09:15,613 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:09:15,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013730010] [2023-04-03 01:09:15,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013730010] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-03 01:09:15,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208154709] [2023-04-03 01:09:15,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:09:15,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 01:09:15,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 01:09:15,614 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-03 01:09:15,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-04-03 01:09:15,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:09:15,730 INFO L262 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 51 conjunts are in the unsatisfiable core [2023-04-03 01:09:15,733 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-03 01:09:15,910 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-04-03 01:09:15,910 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-03 01:09:16,480 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-04-03 01:09:16,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [208154709] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-03 01:09:16,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1740834228] [2023-04-03 01:09:16,483 INFO L159 IcfgInterpreter]: Started Sifa with 91 locations of interest [2023-04-03 01:09:16,483 INFO L166 IcfgInterpreter]: Building call graph [2023-04-03 01:09:16,483 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-03 01:09:16,483 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-03 01:09:16,483 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-03 01:09:16,564 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 28 for LOIs [2023-04-03 01:09:16,586 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 32 for LOIs [2023-04-03 01:09:16,653 INFO L197 IcfgInterpreter]: Interpreting procedure runTest with input of size 32 for LOIs [2023-04-03 01:09:16,659 INFO L197 IcfgInterpreter]: Interpreting procedure setup with input of size 24 for LOIs [2023-04-03 01:09:16,661 INFO L197 IcfgInterpreter]: Interpreting procedure select_features with input of size 24 for LOIs [2023-04-03 01:09:16,662 INFO L197 IcfgInterpreter]: Interpreting procedure test with input of size 32 for LOIs [2023-04-03 01:09:18,060 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 33 for LOIs [2023-04-03 01:09:18,066 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 26 for LOIs [2023-04-03 01:09:18,181 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification4_spec__1 with input of size 20 for LOIs [2023-04-03 01:09:18,205 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 22 for LOIs [2023-04-03 01:09:18,207 INFO L197 IcfgInterpreter]: Interpreting procedure __automaton_fail with input of size 30 for LOIs [2023-04-03 01:09:18,208 INFO L197 IcfgInterpreter]: Interpreting procedure getWaterLevel with input of size 20 for LOIs [2023-04-03 01:09:18,209 INFO L197 IcfgInterpreter]: Interpreting procedure lowerWaterLevel with input of size 26 for LOIs [2023-04-03 01:09:18,212 INFO L197 IcfgInterpreter]: Interpreting procedure valid_product with input of size 24 for LOIs [2023-04-03 01:09:18,213 INFO L197 IcfgInterpreter]: Interpreting procedure select_helpers with input of size 24 for LOIs [2023-04-03 01:09:18,217 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment with input of size 29 for LOIs [2023-04-03 01:09:18,306 INFO L197 IcfgInterpreter]: Interpreting procedure isHighWaterLevel with input of size 22 for LOIs [2023-04-03 01:09:18,367 INFO L197 IcfgInterpreter]: Interpreting procedure isHighWaterSensorDry with input of size 22 for LOIs [2023-04-03 01:09:18,370 INFO L197 IcfgInterpreter]: Interpreting procedure activatePump with input of size 34 for LOIs [2023-04-03 01:09:18,416 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneAlarm with input of size 32 for LOIs [2023-04-03 01:09:18,436 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 32 for LOIs [2023-04-03 01:09:18,471 INFO L197 IcfgInterpreter]: Interpreting procedure activatePump__wrappee__highWaterSensor with input of size 24 for LOIs [2023-04-03 01:09:18,474 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 23 for LOIs [2023-04-03 01:09:18,475 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-03 01:09:21,637 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '56299#(and (<= 1 |#StackHeapBarrier|) (not (= ~pumpRunning~0 0)) (<= ~pumpRunning~0 2147483647) (= ~methaneLevelCritical~0 0) (= ~head~0.offset 0) (= 1 ~systemActive~0) (= ~head~0.base 0) (<= 0 (+ ~pumpRunning~0 2147483648)) (= |#NULL.offset| 0) (= ~waterLevel~0 0) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2023-04-03 01:09:21,638 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-03 01:09:21,638 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-03 01:09:21,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 17] total 33 [2023-04-03 01:09:21,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074650435] [2023-04-03 01:09:21,638 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-03 01:09:21,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-04-03 01:09:21,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:09:21,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-04-03 01:09:21,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=6642, Unknown=0, NotChecked=0, Total=7310 [2023-04-03 01:09:21,641 INFO L87 Difference]: Start difference. First operand 1277 states and 1463 transitions. Second operand has 33 states, 23 states have (on average 4.913043478260869) internal successors, (113), 26 states have internal predecessors, (113), 10 states have call successors, (53), 12 states have call predecessors, (53), 16 states have return successors, (44), 16 states have call predecessors, (44), 10 states have call successors, (44) [2023-04-03 01:09:24,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:09:24,320 INFO L93 Difference]: Finished difference Result 4201 states and 5237 transitions. [2023-04-03 01:09:24,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-04-03 01:09:24,320 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 23 states have (on average 4.913043478260869) internal successors, (113), 26 states have internal predecessors, (113), 10 states have call successors, (53), 12 states have call predecessors, (53), 16 states have return successors, (44), 16 states have call predecessors, (44), 10 states have call successors, (44) Word has length 113 [2023-04-03 01:09:24,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:09:24,333 INFO L225 Difference]: With dead ends: 4201 [2023-04-03 01:09:24,333 INFO L226 Difference]: Without dead ends: 3650 [2023-04-03 01:09:24,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 271 SyntacticMatches, 11 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6355 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=1324, Invalid=13196, Unknown=0, NotChecked=0, Total=14520 [2023-04-03 01:09:24,338 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 1656 mSDsluCounter, 891 mSDsCounter, 0 mSdLazyCounter, 2683 mSolverCounterSat, 1414 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1696 SdHoareTripleChecker+Valid, 993 SdHoareTripleChecker+Invalid, 4097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1414 IncrementalHoareTripleChecker+Valid, 2683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-04-03 01:09:24,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1696 Valid, 993 Invalid, 4097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1414 Valid, 2683 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-04-03 01:09:24,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3650 states. [2023-04-03 01:09:24,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3650 to 3079. [2023-04-03 01:09:24,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3079 states, 1843 states have (on average 1.1833966359196961) internal successors, (2181), 2005 states have internal predecessors, (2181), 617 states have call successors, (617), 617 states have call predecessors, (617), 618 states have return successors, (776), 594 states have call predecessors, (776), 613 states have call successors, (776) [2023-04-03 01:09:24,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3079 states to 3079 states and 3574 transitions. [2023-04-03 01:09:24,865 INFO L78 Accepts]: Start accepts. Automaton has 3079 states and 3574 transitions. Word has length 113 [2023-04-03 01:09:24,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:09:24,867 INFO L495 AbstractCegarLoop]: Abstraction has 3079 states and 3574 transitions. [2023-04-03 01:09:24,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 23 states have (on average 4.913043478260869) internal successors, (113), 26 states have internal predecessors, (113), 10 states have call successors, (53), 12 states have call predecessors, (53), 16 states have return successors, (44), 16 states have call predecessors, (44), 10 states have call successors, (44) [2023-04-03 01:09:24,868 INFO L276 IsEmpty]: Start isEmpty. Operand 3079 states and 3574 transitions. [2023-04-03 01:09:24,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-04-03 01:09:24,871 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:09:24,871 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 01:09:24,879 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-04-03 01:09:25,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 01:09:25,077 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:09:25,078 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:09:25,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1860032991, now seen corresponding path program 2 times [2023-04-03 01:09:25,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:09:25,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176077331] [2023-04-03 01:09:25,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:09:25,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:09:25,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-04-03 01:09:25,107 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-04-03 01:09:25,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-04-03 01:09:25,176 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-04-03 01:09:25,176 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-04-03 01:09:25,177 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-03 01:09:25,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-04-03 01:09:25,181 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 01:09:25,185 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-03 01:09:25,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.04 01:09:25 BoogieIcfgContainer [2023-04-03 01:09:25,252 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-03 01:09:25,252 INFO L158 Benchmark]: Toolchain (without parser) took 196244.66ms. Allocated memory was 281.0MB in the beginning and 1.2GB in the end (delta: 899.7MB). Free memory was 233.9MB in the beginning and 833.5MB in the end (delta: -599.6MB). Peak memory consumption was 301.6MB. Max. memory is 8.0GB. [2023-04-03 01:09:25,253 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 199.2MB. Free memory is still 149.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-04-03 01:09:25,253 INFO L158 Benchmark]: CACSL2BoogieTranslator took 366.32ms. Allocated memory is still 281.0MB. Free memory was 233.5MB in the beginning and 215.1MB in the end (delta: 18.4MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2023-04-03 01:09:25,253 INFO L158 Benchmark]: Boogie Preprocessor took 89.39ms. Allocated memory is still 281.0MB. Free memory was 215.1MB in the beginning and 211.9MB in the end (delta: 3.3MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-04-03 01:09:25,253 INFO L158 Benchmark]: RCFGBuilder took 878.92ms. Allocated memory is still 281.0MB. Free memory was 211.5MB in the beginning and 221.9MB in the end (delta: -10.4MB). Peak memory consumption was 38.2MB. Max. memory is 8.0GB. [2023-04-03 01:09:25,253 INFO L158 Benchmark]: TraceAbstraction took 194904.41ms. Allocated memory was 281.0MB in the beginning and 1.2GB in the end (delta: 899.7MB). Free memory was 220.9MB in the beginning and 833.5MB in the end (delta: -612.7MB). Peak memory consumption was 287.5MB. Max. memory is 8.0GB. [2023-04-03 01:09:25,254 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 199.2MB. Free memory is still 149.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 366.32ms. Allocated memory is still 281.0MB. Free memory was 233.5MB in the beginning and 215.1MB in the end (delta: 18.4MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * Boogie Preprocessor took 89.39ms. Allocated memory is still 281.0MB. Free memory was 215.1MB in the beginning and 211.9MB in the end (delta: 3.3MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 878.92ms. Allocated memory is still 281.0MB. Free memory was 211.5MB in the beginning and 221.9MB in the end (delta: -10.4MB). Peak memory consumption was 38.2MB. Max. memory is 8.0GB. * TraceAbstraction took 194904.41ms. Allocated memory was 281.0MB in the beginning and 1.2GB in the end (delta: 899.7MB). Free memory was 220.9MB in the beginning and 833.5MB in the end (delta: -612.7MB). Peak memory consumption was 287.5MB. Max. memory is 8.0GB. * 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 - CounterExampleResult [Line: 762]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L248] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L565] int pumpRunning = 0; [L566] int systemActive = 1; [L767] int cleanupTimeShifts = 4; [L863] int waterLevel = 1; [L864] int methaneLevelCritical = 0; [L840] int retValue_acc ; [L841] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L845] FCALL select_helpers() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L846] FCALL select_features() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L847] CALL, EXPR valid_product() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L474] int retValue_acc ; [L477] retValue_acc = 1 [L478] return (retValue_acc); [L847] RET, EXPR valid_product() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, valid_product()=1, waterLevel=1] [L847] tmp = valid_product() [L849] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L851] FCALL setup() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L852] CALL runTest() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L834] CALL test() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L490] int splverifierCounter ; [L491] int tmp ; [L492] int tmp___0 ; [L493] int tmp___1 ; [L494] int tmp___2 ; [L497] splverifierCounter = 0 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L499] COND TRUE 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L501] COND TRUE splverifierCounter < 4 [L507] tmp = __VERIFIER_nondet_int() [L509] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L511] CALL waterRise() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L881] COND TRUE waterLevel < 2 [L882] waterLevel = waterLevel + 1 [L511] RET waterRise() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2] [L517] tmp___0 = __VERIFIER_nondet_int() [L519] COND FALSE !(\read(tmp___0)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, waterLevel=2] [L527] tmp___2 = __VERIFIER_nondet_int() [L529] COND FALSE !(\read(tmp___2)) [L535] tmp___1 = __VERIFIER_nondet_int() [L537] COND FALSE !(\read(tmp___1)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=2] [L546] CALL timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L572] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L579] COND TRUE \read(systemActive) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L581] CALL processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L601] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L604] COND TRUE ! pumpRunning VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L606] CALL, EXPR isHighWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L716] int retValue_acc ; [L717] int tmp ; [L718] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L722] CALL, EXPR isHighWaterSensorDry() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L943] int retValue_acc ; [L946] COND FALSE !(waterLevel < 2) [L950] retValue_acc = 0 [L951] return (retValue_acc); [L722] RET, EXPR isHighWaterSensorDry() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterSensorDry()=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L722] tmp = isHighWaterSensorDry() [L724] COND FALSE !(\read(tmp)) [L727] tmp___0 = 1 [L729] retValue_acc = tmp___0 [L730] return (retValue_acc); [L606] RET, EXPR isHighWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterLevel()=1, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L606] tmp = isHighWaterLevel() [L608] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=2] [L610] CALL activatePump() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L635] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L639] CALL, EXPR isMethaneAlarm() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L660] int retValue_acc ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L664] CALL, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L902] int retValue_acc ; [L905] retValue_acc = methaneLevelCritical [L906] return (retValue_acc); [L664] RET, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L664] retValue_acc = isMethaneLevelCritical() [L666] return (retValue_acc); [L639] RET, EXPR isMethaneAlarm() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneAlarm()=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L639] tmp = isMethaneAlarm() [L641] COND FALSE !(\read(tmp)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=0, waterLevel=2] [L645] CALL activatePump__wrappee__highWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L629] pumpRunning = 1 [L645] RET activatePump__wrappee__highWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=2] [L610] RET activatePump() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L581] RET processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L587] CALL __utac_acc__Specification4_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L54] int tmp ; [L55] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L59] CALL, EXPR getWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L934] int retValue_acc ; [L937] retValue_acc = waterLevel [L938] return (retValue_acc); [L59] RET, EXPR getWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, getWaterLevel()=2, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L59] tmp = getWaterLevel() [L61] COND FALSE !(tmp == 0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=2, waterLevel=2] [L587] RET __utac_acc__Specification4_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L546] RET timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=2] [L499] COND TRUE 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=2] [L501] COND TRUE splverifierCounter < 4 [L507] tmp = __VERIFIER_nondet_int() [L509] COND FALSE !(\read(tmp)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=2] [L517] tmp___0 = __VERIFIER_nondet_int() [L519] COND FALSE !(\read(tmp___0)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=2] [L527] tmp___2 = __VERIFIER_nondet_int() [L529] COND FALSE !(\read(tmp___2)) [L535] tmp___1 = __VERIFIER_nondet_int() [L537] COND FALSE !(\read(tmp___1)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=2] [L546] CALL timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L572] COND TRUE \read(pumpRunning) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L574] CALL lowerWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L869] COND TRUE waterLevel > 0 [L870] waterLevel = waterLevel - 1 [L574] RET lowerWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L579] COND TRUE \read(systemActive) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L581] CALL processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L601] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L604] COND FALSE !(! pumpRunning) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L619] FCALL processEnvironment__wrappee__base() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L581] RET processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L587] CALL __utac_acc__Specification4_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L54] int tmp ; [L55] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L59] CALL, EXPR getWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L934] int retValue_acc ; [L937] retValue_acc = waterLevel [L938] return (retValue_acc); [L59] RET, EXPR getWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, getWaterLevel()=1, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L59] tmp = getWaterLevel() [L61] COND FALSE !(tmp == 0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=1, waterLevel=1] [L587] RET __utac_acc__Specification4_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L546] RET timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=1] [L499] COND TRUE 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=1] [L501] COND TRUE splverifierCounter < 4 [L507] tmp = __VERIFIER_nondet_int() [L509] COND FALSE !(\read(tmp)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=1] [L517] tmp___0 = __VERIFIER_nondet_int() [L519] COND FALSE !(\read(tmp___0)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=1] [L527] tmp___2 = __VERIFIER_nondet_int() [L529] COND FALSE !(\read(tmp___2)) [L535] tmp___1 = __VERIFIER_nondet_int() [L537] COND FALSE !(\read(tmp___1)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=1] [L546] CALL timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L572] COND TRUE \read(pumpRunning) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L574] CALL lowerWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L869] COND TRUE waterLevel > 0 [L870] waterLevel = waterLevel - 1 [L574] RET lowerWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L579] COND TRUE \read(systemActive) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L581] CALL processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L601] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L604] COND FALSE !(! pumpRunning) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L619] FCALL processEnvironment__wrappee__base() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L581] RET processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L587] CALL __utac_acc__Specification4_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L54] int tmp ; [L55] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L59] CALL, EXPR getWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L934] int retValue_acc ; [L937] retValue_acc = waterLevel [L938] return (retValue_acc); [L59] RET, EXPR getWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, getWaterLevel()=0, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L59] tmp = getWaterLevel() [L61] COND TRUE tmp == 0 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=0] [L63] CALL, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L671] int retValue_acc ; [L674] retValue_acc = pumpRunning [L675] return (retValue_acc); [L63] RET, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, isPumpRunning()=1, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=0] [L63] tmp___0 = isPumpRunning() [L65] COND TRUE \read(tmp___0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, tmp___0=1, waterLevel=0] [L67] CALL __automaton_fail() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L762] reach_error() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 41 procedures, 185 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 194.8s, OverallIterations: 15, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 137.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 11476 SdHoareTripleChecker+Valid, 25.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11343 mSDsluCounter, 8507 SdHoareTripleChecker+Invalid, 21.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7128 mSDsCounter, 8650 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 43165 IncrementalHoareTripleChecker+Invalid, 51815 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8650 mSolverCounterUnsat, 1379 mSDtfsCounter, 43165 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2464 GetRequests, 1271 SyntacticMatches, 27 SemanticMatches, 1166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94469 ImplicationChecksByTransitivity, 127.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3079occurred in iteration=14, InterpolantAutomatonStates: 832, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.0s AutomataMinimizationTime, 14 MinimizatonAttempts, 5920 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 6.3s InterpolantComputationTime, 1881 NumberOfCodeBlocks, 1881 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 2183 ConstructedInterpolants, 0 QuantifiedInterpolants, 6032 SizeOfPredicates, 50 NumberOfNonLiveVariables, 2422 ConjunctsInSsa, 288 ConjunctsInUnsatCore, 25 InterpolantComputations, 9 PerfectInterpolantSequences, 291/423 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: OVERALL_TIME: 24.3s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 72, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 380, DAG_INTERPRETER_EARLY_EXITS: 4, TOOLS_POST_APPLICATIONS: 348, TOOLS_POST_TIME: 1.7s, TOOLS_POST_CALL_APPLICATIONS: 292, TOOLS_POST_CALL_TIME: 2.5s, TOOLS_POST_RETURN_APPLICATIONS: 224, TOOLS_POST_RETURN_TIME: 2.0s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 864, TOOLS_QUANTIFIERELIM_TIME: 6.0s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.1s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 1121, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 286, DOMAIN_JOIN_TIME: 17.0s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 5, DOMAIN_WIDEN_TIME: 0.5s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 9, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 380, DOMAIN_ISBOTTOM_TIME: 0.3s, LOOP_SUMMARIZER_APPLICATIONS: 4, LOOP_SUMMARIZER_CACHE_MISSES: 4, LOOP_SUMMARIZER_OVERALL_TIME: 12.5s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 12.5s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 9, CALL_SUMMARIZER_APPLICATIONS: 224, CALL_SUMMARIZER_CACHE_MISSES: 56, CALL_SUMMARIZER_OVERALL_TIME: 0.2s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.2s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 3818, DAG_COMPRESSION_RETAINED_NODES: 1020, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-04-03 01:09:25,273 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...