/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_product35.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-03 01:05:03,404 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-03 01:05:03,405 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-03 01:05:03,428 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-03 01:05:03,428 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-03 01:05:03,433 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-03 01:05:03,436 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-03 01:05:03,438 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-03 01:05:03,441 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-03 01:05:03,444 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-03 01:05:03,446 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-03 01:05:03,447 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-03 01:05:03,447 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-03 01:05:03,449 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-03 01:05:03,450 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-03 01:05:03,451 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-03 01:05:03,451 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-03 01:05:03,452 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-03 01:05:03,454 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-03 01:05:03,469 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-03 01:05:03,470 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-03 01:05:03,471 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-03 01:05:03,471 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-03 01:05:03,472 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-03 01:05:03,474 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-03 01:05:03,474 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-03 01:05:03,474 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-03 01:05:03,474 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-03 01:05:03,475 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-03 01:05:03,475 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-03 01:05:03,475 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-03 01:05:03,476 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-03 01:05:03,476 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-03 01:05:03,476 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-03 01:05:03,477 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-03 01:05:03,477 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-03 01:05:03,477 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-03 01:05:03,478 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-03 01:05:03,478 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-03 01:05:03,478 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-03 01:05:03,479 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-03 01:05:03,481 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 01:05:03,496 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-03 01:05:03,496 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-03 01:05:03,496 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-03 01:05:03,496 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-03 01:05:03,499 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-03 01:05:03,500 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-03 01:05:03,500 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-03 01:05:03,500 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-03 01:05:03,500 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-03 01:05:03,500 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-03 01:05:03,500 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-03 01:05:03,501 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-03 01:05:03,501 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-03 01:05:03,501 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-03 01:05:03,501 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-03 01:05:03,501 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-03 01:05:03,501 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-03 01:05:03,501 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-03 01:05:03,501 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-03 01:05:03,502 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-03 01:05:03,502 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-03 01:05:03,502 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-03 01:05:03,502 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-03 01:05:03,502 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-03 01:05:03,502 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-03 01:05:03,502 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-03 01:05:03,502 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-03 01:05:03,502 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-03 01:05:03,502 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-03 01:05:03,503 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-03 01:05:03,503 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-03 01:05:03,503 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-03 01:05:03,503 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 01:05:03,503 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-03 01:05:03,503 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-03 01:05:03,503 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-03 01:05:03,503 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-03 01:05:03,503 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-03 01:05:03,503 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-03 01:05:03,503 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-03 01:05:03,504 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-03 01:05:03,504 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-03 01:05:03,683 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-03 01:05:03,698 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-03 01:05:03,700 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-03 01:05:03,701 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-03 01:05:03,701 INFO L275 PluginConnector]: CDTParser initialized [2023-04-03 01:05:03,702 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec4_product35.cil.c [2023-04-03 01:05:04,776 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-03 01:05:04,917 INFO L351 CDTParser]: Found 1 translation units. [2023-04-03 01:05:04,918 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec4_product35.cil.c [2023-04-03 01:05:04,925 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08bca3fe1/b8e0e01fc17641e78020241140eacace/FLAGf792f3d33 [2023-04-03 01:05:04,934 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08bca3fe1/b8e0e01fc17641e78020241140eacace [2023-04-03 01:05:04,935 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-03 01:05:04,936 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-03 01:05:04,937 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-03 01:05:04,937 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-03 01:05:04,948 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-03 01:05:04,948 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 01:05:04" (1/1) ... [2023-04-03 01:05:04,949 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@565c23a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:05:04, skipping insertion in model container [2023-04-03 01:05:04,949 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 01:05:04" (1/1) ... [2023-04-03 01:05:04,954 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-03 01:05:04,993 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-03 01:05:05,190 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_product35.cil.c[16086,16099] [2023-04-03 01:05:05,209 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 01:05:05,217 INFO L203 MainTranslator]: Completed pre-run [2023-04-03 01:05:05,272 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_product35.cil.c[16086,16099] [2023-04-03 01:05:05,275 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 01:05:05,298 INFO L208 MainTranslator]: Completed translation [2023-04-03 01:05:05,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:05:05 WrapperNode [2023-04-03 01:05:05,299 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-03 01:05:05,299 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-03 01:05:05,300 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-03 01:05:05,300 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-03 01:05:05,308 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:05:05" (1/1) ... [2023-04-03 01:05:05,308 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:05:05" (1/1) ... [2023-04-03 01:05:05,319 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:05:05" (1/1) ... [2023-04-03 01:05:05,319 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:05:05" (1/1) ... [2023-04-03 01:05:05,335 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:05:05" (1/1) ... [2023-04-03 01:05:05,339 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:05:05" (1/1) ... [2023-04-03 01:05:05,340 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:05:05" (1/1) ... [2023-04-03 01:05:05,342 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:05:05" (1/1) ... [2023-04-03 01:05:05,354 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-03 01:05:05,354 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-03 01:05:05,354 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-03 01:05:05,354 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-03 01:05:05,355 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:05:05" (1/1) ... [2023-04-03 01:05:05,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 01:05:05,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 01:05:05,378 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 01:05:05,384 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 01:05:05,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-03 01:05:05,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-03 01:05:05,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2023-04-03 01:05:05,407 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-03 01:05:05,408 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2023-04-03 01:05:05,408 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2023-04-03 01:05:05,408 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-04-03 01:05:05,408 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2023-04-03 01:05:05,408 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2023-04-03 01:05:05,408 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2023-04-03 01:05:05,408 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2023-04-03 01:05:05,408 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2023-04-03 01:05:05,408 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2023-04-03 01:05:05,409 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2023-04-03 01:05:05,409 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2023-04-03 01:05:05,409 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2023-04-03 01:05:05,409 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-04-03 01:05:05,409 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2023-04-03 01:05:05,409 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2023-04-03 01:05:05,409 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2023-04-03 01:05:05,409 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-03 01:05:05,409 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2023-04-03 01:05:05,409 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2023-04-03 01:05:05,409 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2023-04-03 01:05:05,409 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2023-04-03 01:05:05,409 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2023-04-03 01:05:05,409 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2023-04-03 01:05:05,410 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-04-03 01:05:05,410 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2023-04-03 01:05:05,410 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2023-04-03 01:05:05,410 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2023-04-03 01:05:05,410 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2023-04-03 01:05:05,410 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2023-04-03 01:05:05,410 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2023-04-03 01:05:05,410 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2023-04-03 01:05:05,410 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2023-04-03 01:05:05,410 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2023-04-03 01:05:05,410 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2023-04-03 01:05:05,410 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2023-04-03 01:05:05,410 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-03 01:05:05,411 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-03 01:05:05,411 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-03 01:05:05,411 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-03 01:05:05,411 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-03 01:05:05,412 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2023-04-03 01:05:05,412 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2023-04-03 01:05:05,412 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2023-04-03 01:05:05,412 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2023-04-03 01:05:05,413 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-04-03 01:05:05,413 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-04-03 01:05:05,413 INFO L130 BoogieDeclarations]: Found specification of procedure test [2023-04-03 01:05:05,413 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-04-03 01:05:05,413 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2023-04-03 01:05:05,413 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2023-04-03 01:05:05,413 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2023-04-03 01:05:05,413 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2023-04-03 01:05:05,414 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2023-04-03 01:05:05,414 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2023-04-03 01:05:05,414 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2023-04-03 01:05:05,415 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2023-04-03 01:05:05,415 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2023-04-03 01:05:05,415 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2023-04-03 01:05:05,415 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2023-04-03 01:05:05,416 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2023-04-03 01:05:05,416 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2023-04-03 01:05:05,416 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2023-04-03 01:05:05,416 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2023-04-03 01:05:05,416 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2023-04-03 01:05:05,419 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2023-04-03 01:05:05,419 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2023-04-03 01:05:05,419 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2023-04-03 01:05:05,419 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2023-04-03 01:05:05,419 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-03 01:05:05,419 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-03 01:05:05,420 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-03 01:05:05,420 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2023-04-03 01:05:05,420 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-03 01:05:05,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-03 01:05:05,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-03 01:05:05,420 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-03 01:05:05,420 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2023-04-03 01:05:05,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-03 01:05:05,420 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2023-04-03 01:05:05,420 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2023-04-03 01:05:05,420 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-03 01:05:05,420 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2023-04-03 01:05:05,420 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2023-04-03 01:05:05,421 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2023-04-03 01:05:05,421 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2023-04-03 01:05:05,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-03 01:05:05,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-03 01:05:05,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-03 01:05:05,589 INFO L236 CfgBuilder]: Building ICFG [2023-04-03 01:05:05,591 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-03 01:05:06,036 INFO L277 CfgBuilder]: Performing block encoding [2023-04-03 01:05:06,132 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-03 01:05:06,133 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-04-03 01:05:06,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 01:05:06 BoogieIcfgContainer [2023-04-03 01:05:06,136 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-03 01:05:06,138 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-03 01:05:06,138 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-03 01:05:06,141 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-03 01:05:06,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.04 01:05:04" (1/3) ... [2023-04-03 01:05:06,142 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@758496c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 01:05:06, skipping insertion in model container [2023-04-03 01:05:06,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:05:05" (2/3) ... [2023-04-03 01:05:06,142 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@758496c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 01:05:06, skipping insertion in model container [2023-04-03 01:05:06,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 01:05:06" (3/3) ... [2023-04-03 01:05:06,145 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product35.cil.c [2023-04-03 01:05:06,156 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-03 01:05:06,157 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-03 01:05:06,195 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-03 01:05:06,201 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;@7ba68e4c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-03 01:05:06,201 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-03 01:05:06,204 INFO L276 IsEmpty]: Start isEmpty. Operand has 130 states, 59 states have (on average 1.2881355932203389) internal successors, (76), 71 states have internal predecessors, (76), 42 states have call successors, (42), 26 states have call predecessors, (42), 26 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-04-03 01:05:06,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-04-03 01:05:06,211 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:05:06,212 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 01:05:06,212 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:05:06,217 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:05:06,218 INFO L85 PathProgramCache]: Analyzing trace with hash -188199376, now seen corresponding path program 1 times [2023-04-03 01:05:06,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:05:06,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589590187] [2023-04-03 01:05:06,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:05:06,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:05:06,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:05:06,398 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 01:05:06,399 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:05:06,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589590187] [2023-04-03 01:05:06,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589590187] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:05:06,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:05:06,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-04-03 01:05:06,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135042553] [2023-04-03 01:05:06,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:05:06,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-04-03 01:05:06,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:05:06,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-04-03 01:05:06,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-03 01:05:06,440 INFO L87 Difference]: Start difference. First operand has 130 states, 59 states have (on average 1.2881355932203389) internal successors, (76), 71 states have internal predecessors, (76), 42 states have call successors, (42), 26 states have call predecessors, (42), 26 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) 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 01:05:06,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:05:06,493 INFO L93 Difference]: Finished difference Result 193 states and 234 transitions. [2023-04-03 01:05:06,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-04-03 01:05:06,495 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 01:05:06,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:05:06,502 INFO L225 Difference]: With dead ends: 193 [2023-04-03 01:05:06,502 INFO L226 Difference]: Without dead ends: 97 [2023-04-03 01:05:06,505 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 01:05:06,508 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-03 01:05:06,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 107 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-03 01:05:06,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2023-04-03 01:05:06,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2023-04-03 01:05:06,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 50 states have (on average 1.24) internal successors, (62), 59 states have internal predecessors, (62), 27 states have call successors, (27), 24 states have call predecessors, (27), 19 states have return successors, (22), 20 states have call predecessors, (22), 22 states have call successors, (22) [2023-04-03 01:05:06,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 111 transitions. [2023-04-03 01:05:06,550 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 111 transitions. Word has length 42 [2023-04-03 01:05:06,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:05:06,551 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 111 transitions. [2023-04-03 01:05:06,551 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 01:05:06,552 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 111 transitions. [2023-04-03 01:05:06,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-04-03 01:05:06,555 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:05:06,555 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 01:05:06,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-03 01:05:06,555 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:05:06,555 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:05:06,556 INFO L85 PathProgramCache]: Analyzing trace with hash -871269547, now seen corresponding path program 1 times [2023-04-03 01:05:06,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:05:06,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232132774] [2023-04-03 01:05:06,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:05:06,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:05:06,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:05:06,668 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 01:05:06,669 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:05:06,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232132774] [2023-04-03 01:05:06,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232132774] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:05:06,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:05:06,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 01:05:06,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378200603] [2023-04-03 01:05:06,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:05:06,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 01:05:06,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:05:06,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 01:05:06,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 01:05:06,672 INFO L87 Difference]: Start difference. First operand 97 states and 111 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 01:05:06,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:05:06,708 INFO L93 Difference]: Finished difference Result 142 states and 161 transitions. [2023-04-03 01:05:06,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 01:05:06,709 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 01:05:06,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:05:06,711 INFO L225 Difference]: With dead ends: 142 [2023-04-03 01:05:06,713 INFO L226 Difference]: Without dead ends: 89 [2023-04-03 01:05:06,716 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 01:05:06,717 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 11 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-03 01:05:06,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 158 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-03 01:05:06,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-04-03 01:05:06,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2023-04-03 01:05:06,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 45 states have (on average 1.2444444444444445) internal successors, (56), 54 states have internal predecessors, (56), 24 states have call successors, (24), 23 states have call predecessors, (24), 19 states have return successors, (20), 18 states have call predecessors, (20), 20 states have call successors, (20) [2023-04-03 01:05:06,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 100 transitions. [2023-04-03 01:05:06,734 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 100 transitions. Word has length 43 [2023-04-03 01:05:06,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:05:06,735 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 100 transitions. [2023-04-03 01:05:06,735 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 01:05:06,735 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 100 transitions. [2023-04-03 01:05:06,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-04-03 01:05:06,741 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:05:06,741 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] [2023-04-03 01:05:06,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-03 01:05:06,742 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:05:06,742 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:05:06,742 INFO L85 PathProgramCache]: Analyzing trace with hash 890397745, now seen corresponding path program 1 times [2023-04-03 01:05:06,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:05:06,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922130483] [2023-04-03 01:05:06,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:05:06,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:05:06,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:05:06,952 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 01:05:06,953 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:05:06,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922130483] [2023-04-03 01:05:06,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922130483] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:05:06,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:05:06,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-03 01:05:06,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443839936] [2023-04-03 01:05:06,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:05:06,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-03 01:05:06,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:05:06,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-03 01:05:06,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-04-03 01:05:06,954 INFO L87 Difference]: Start difference. First operand 89 states and 100 transitions. Second operand has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 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 01:05:07,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:05:07,156 INFO L93 Difference]: Finished difference Result 267 states and 313 transitions. [2023-04-03 01:05:07,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-03 01:05:07,156 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 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 46 [2023-04-03 01:05:07,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:05:07,160 INFO L225 Difference]: With dead ends: 267 [2023-04-03 01:05:07,160 INFO L226 Difference]: Without dead ends: 200 [2023-04-03 01:05:07,164 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 01:05:07,167 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 153 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 01:05:07,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 442 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 01:05:07,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2023-04-03 01:05:07,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 182. [2023-04-03 01:05:07,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 99 states have (on average 1.2727272727272727) internal successors, (126), 115 states have internal predecessors, (126), 44 states have call successors, (44), 42 states have call predecessors, (44), 38 states have return successors, (41), 36 states have call predecessors, (41), 40 states have call successors, (41) [2023-04-03 01:05:07,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 211 transitions. [2023-04-03 01:05:07,195 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 211 transitions. Word has length 46 [2023-04-03 01:05:07,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:05:07,195 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 211 transitions. [2023-04-03 01:05:07,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 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 01:05:07,195 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 211 transitions. [2023-04-03 01:05:07,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-04-03 01:05:07,197 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:05:07,197 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 01:05:07,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-03 01:05:07,198 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:05:07,201 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:05:07,201 INFO L85 PathProgramCache]: Analyzing trace with hash 306243444, now seen corresponding path program 1 times [2023-04-03 01:05:07,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:05:07,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453831334] [2023-04-03 01:05:07,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:05:07,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:05:07,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:05:07,374 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 01:05:07,374 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:05:07,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453831334] [2023-04-03 01:05:07,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453831334] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:05:07,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:05:07,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-03 01:05:07,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739245532] [2023-04-03 01:05:07,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:05:07,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-03 01:05:07,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:05:07,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-03 01:05:07,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-04-03 01:05:07,376 INFO L87 Difference]: Start difference. First operand 182 states and 211 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 01:05:07,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:05:07,621 INFO L93 Difference]: Finished difference Result 623 states and 766 transitions. [2023-04-03 01:05:07,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-03 01:05:07,621 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 01:05:07,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:05:07,627 INFO L225 Difference]: With dead ends: 623 [2023-04-03 01:05:07,627 INFO L226 Difference]: Without dead ends: 463 [2023-04-03 01:05:07,628 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 01:05:07,633 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 162 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 01:05:07,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 552 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 01:05:07,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2023-04-03 01:05:07,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 439. [2023-04-03 01:05:07,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 250 states have (on average 1.276) internal successors, (319), 287 states have internal predecessors, (319), 99 states have call successors, (99), 93 states have call predecessors, (99), 89 states have return successors, (106), 83 states have call predecessors, (106), 95 states have call successors, (106) [2023-04-03 01:05:07,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 524 transitions. [2023-04-03 01:05:07,676 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 524 transitions. Word has length 51 [2023-04-03 01:05:07,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:05:07,677 INFO L495 AbstractCegarLoop]: Abstraction has 439 states and 524 transitions. [2023-04-03 01:05:07,677 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 01:05:07,677 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 524 transitions. [2023-04-03 01:05:07,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-04-03 01:05:07,679 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:05:07,679 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 01:05:07,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-03 01:05:07,680 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:05:07,680 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:05:07,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1354222404, now seen corresponding path program 1 times [2023-04-03 01:05:07,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:05:07,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490852528] [2023-04-03 01:05:07,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:05:07,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:05:07,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:05:07,767 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 01:05:07,768 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:05:07,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490852528] [2023-04-03 01:05:07,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490852528] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:05:07,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:05:07,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-03 01:05:07,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474170154] [2023-04-03 01:05:07,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:05:07,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-03 01:05:07,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:05:07,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-03 01:05:07,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-03 01:05:07,769 INFO L87 Difference]: Start difference. First operand 439 states and 524 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 01:05:07,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:05:07,997 INFO L93 Difference]: Finished difference Result 1163 states and 1522 transitions. [2023-04-03 01:05:07,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 01:05:07,998 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 01:05:07,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:05:08,003 INFO L225 Difference]: With dead ends: 1163 [2023-04-03 01:05:08,003 INFO L226 Difference]: Without dead ends: 746 [2023-04-03 01:05:08,004 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 01:05:08,005 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 121 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-03 01:05:08,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 96 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-03 01:05:08,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2023-04-03 01:05:08,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 644. [2023-04-03 01:05:08,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 644 states, 379 states have (on average 1.237467018469657) internal successors, (469), 413 states have internal predecessors, (469), 131 states have call successors, (131), 129 states have call predecessors, (131), 133 states have return successors, (172), 130 states have call predecessors, (172), 127 states have call successors, (172) [2023-04-03 01:05:08,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 644 states to 644 states and 772 transitions. [2023-04-03 01:05:08,048 INFO L78 Accepts]: Start accepts. Automaton has 644 states and 772 transitions. Word has length 54 [2023-04-03 01:05:08,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:05:08,048 INFO L495 AbstractCegarLoop]: Abstraction has 644 states and 772 transitions. [2023-04-03 01:05:08,048 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 01:05:08,048 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 772 transitions. [2023-04-03 01:05:08,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-04-03 01:05:08,050 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:05:08,050 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] [2023-04-03 01:05:08,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-03 01:05:08,050 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:05:08,050 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:05:08,051 INFO L85 PathProgramCache]: Analyzing trace with hash 705955535, now seen corresponding path program 1 times [2023-04-03 01:05:08,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:05:08,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641920374] [2023-04-03 01:05:08,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:05:08,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:05:08,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:05:08,172 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 01:05:08,173 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:05:08,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641920374] [2023-04-03 01:05:08,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641920374] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-03 01:05:08,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707444716] [2023-04-03 01:05:08,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:05:08,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 01:05:08,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 01:05:08,176 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 01:05:08,177 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 01:05:08,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:05:08,278 INFO L262 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 51 conjunts are in the unsatisfiable core [2023-04-03 01:05:08,283 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-03 01:05:08,578 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 01:05:08,578 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-03 01:05:08,995 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 01:05:08,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [707444716] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-03 01:05:08,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1877964831] [2023-04-03 01:05:09,011 INFO L159 IcfgInterpreter]: Started Sifa with 59 locations of interest [2023-04-03 01:05:09,011 INFO L166 IcfgInterpreter]: Building call graph [2023-04-03 01:05:09,014 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-03 01:05:09,016 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-03 01:05:09,017 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-03 01:05:09,183 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 28 for LOIs [2023-04-03 01:05:09,210 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 32 for LOIs [2023-04-03 01:05:09,321 INFO L197 IcfgInterpreter]: Interpreting procedure runTest with input of size 32 for LOIs [2023-04-03 01:05:09,331 INFO L197 IcfgInterpreter]: Interpreting procedure setup with input of size 24 for LOIs [2023-04-03 01:05:09,332 INFO L197 IcfgInterpreter]: Interpreting procedure select_features with input of size 24 for LOIs [2023-04-03 01:05:09,334 INFO L197 IcfgInterpreter]: Interpreting procedure test with input of size 32 for LOIs [2023-04-03 01:05:12,245 INFO L197 IcfgInterpreter]: Interpreting procedure stopSystem with input of size 40 for LOIs [2023-04-03 01:05:12,253 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 46 for LOIs [2023-04-03 01:05:12,259 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 31 for LOIs [2023-04-03 01:05:12,339 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification4_spec__1 with input of size 22 for LOIs [2023-04-03 01:05:12,372 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 24 for LOIs [2023-04-03 01:05:12,374 INFO L197 IcfgInterpreter]: Interpreting procedure getWaterLevel with input of size 22 for LOIs [2023-04-03 01:05:12,376 INFO L197 IcfgInterpreter]: Interpreting procedure valid_product with input of size 24 for LOIs [2023-04-03 01:05:12,378 INFO L197 IcfgInterpreter]: Interpreting procedure select_helpers with input of size 24 for LOIs [2023-04-03 01:05:12,379 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-03 01:05:14,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1877964831] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:05:14,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-04-03 01:05:14,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [7, 14, 12] total 61 [2023-04-03 01:05:14,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941935124] [2023-04-03 01:05:14,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:05:14,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-04-03 01:05:14,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:05:14,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-04-03 01:05:14,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=387, Invalid=3273, Unknown=0, NotChecked=0, Total=3660 [2023-04-03 01:05:14,790 INFO L87 Difference]: Start difference. First operand 644 states and 772 transitions. Second operand has 35 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 27 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 01:05:24,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:05:24,139 INFO L93 Difference]: Finished difference Result 1388 states and 1743 transitions. [2023-04-03 01:05:24,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2023-04-03 01:05:24,151 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 27 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 78 [2023-04-03 01:05:24,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:05:24,155 INFO L225 Difference]: With dead ends: 1388 [2023-04-03 01:05:24,156 INFO L226 Difference]: Without dead ends: 1016 [2023-04-03 01:05:24,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 186 SyntacticMatches, 2 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3937 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=1887, Invalid=11919, Unknown=0, NotChecked=0, Total=13806 [2023-04-03 01:05:24,160 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 770 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 3600 mSolverCounterSat, 554 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 777 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 4154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 554 IncrementalHoareTripleChecker+Valid, 3600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-04-03 01:05:24,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [777 Valid, 272 Invalid, 4154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [554 Valid, 3600 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-04-03 01:05:24,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1016 states. [2023-04-03 01:05:24,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1016 to 862. [2023-04-03 01:05:24,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 862 states, 517 states have (on average 1.230174081237911) internal successors, (636), 558 states have internal predecessors, (636), 171 states have call successors, (171), 167 states have call predecessors, (171), 173 states have return successors, (220), 172 states have call predecessors, (220), 167 states have call successors, (220) [2023-04-03 01:05:24,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 862 states to 862 states and 1027 transitions. [2023-04-03 01:05:24,263 INFO L78 Accepts]: Start accepts. Automaton has 862 states and 1027 transitions. Word has length 78 [2023-04-03 01:05:24,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:05:24,264 INFO L495 AbstractCegarLoop]: Abstraction has 862 states and 1027 transitions. [2023-04-03 01:05:24,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 27 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 01:05:24,265 INFO L276 IsEmpty]: Start isEmpty. Operand 862 states and 1027 transitions. [2023-04-03 01:05:24,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-04-03 01:05:24,275 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:05:24,276 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] [2023-04-03 01:05:24,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-03 01:05:24,482 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 01:05:24,482 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:05:24,483 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:05:24,483 INFO L85 PathProgramCache]: Analyzing trace with hash 25772286, now seen corresponding path program 1 times [2023-04-03 01:05:24,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:05:24,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238839106] [2023-04-03 01:05:24,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:05:24,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:05:24,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:05:24,621 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 01:05:24,622 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:05:24,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238839106] [2023-04-03 01:05:24,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238839106] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-03 01:05:24,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229833686] [2023-04-03 01:05:24,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:05:24,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 01:05:24,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 01:05:24,638 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 01:05:24,640 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 01:05:24,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:05:24,726 INFO L262 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 51 conjunts are in the unsatisfiable core [2023-04-03 01:05:24,731 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-03 01:05:24,923 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 01:05:24,924 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-03 01:05:25,287 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 01:05:25,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1229833686] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-03 01:05:25,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1482529094] [2023-04-03 01:05:25,289 INFO L159 IcfgInterpreter]: Started Sifa with 62 locations of interest [2023-04-03 01:05:25,289 INFO L166 IcfgInterpreter]: Building call graph [2023-04-03 01:05:25,290 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-03 01:05:25,290 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-03 01:05:25,290 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-03 01:05:25,353 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 28 for LOIs [2023-04-03 01:05:25,373 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 32 for LOIs [2023-04-03 01:05:25,456 INFO L197 IcfgInterpreter]: Interpreting procedure runTest with input of size 32 for LOIs [2023-04-03 01:05:25,464 INFO L197 IcfgInterpreter]: Interpreting procedure setup with input of size 24 for LOIs [2023-04-03 01:05:25,466 INFO L197 IcfgInterpreter]: Interpreting procedure select_features with input of size 24 for LOIs [2023-04-03 01:05:25,467 INFO L197 IcfgInterpreter]: Interpreting procedure test with input of size 32 for LOIs [2023-04-03 01:05:29,390 INFO L197 IcfgInterpreter]: Interpreting procedure stopSystem with input of size 56 for LOIs [2023-04-03 01:05:29,408 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 66 for LOIs [2023-04-03 01:05:29,415 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 43 for LOIs [2023-04-03 01:05:29,492 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification4_spec__1 with input of size 26 for LOIs [2023-04-03 01:05:29,523 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 28 for LOIs [2023-04-03 01:05:29,525 INFO L197 IcfgInterpreter]: Interpreting procedure getWaterLevel with input of size 26 for LOIs [2023-04-03 01:05:29,526 INFO L197 IcfgInterpreter]: Interpreting procedure changeMethaneLevel with input of size 39 for LOIs [2023-04-03 01:05:29,531 INFO L197 IcfgInterpreter]: Interpreting procedure valid_product with input of size 24 for LOIs [2023-04-03 01:05:29,532 INFO L197 IcfgInterpreter]: Interpreting procedure select_helpers with input of size 24 for LOIs [2023-04-03 01:05:29,533 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-03 01:05:33,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1482529094] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:05:33,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-04-03 01:05:33,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [7, 14, 12] total 64 [2023-04-03 01:05:33,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962064285] [2023-04-03 01:05:33,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:05:33,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-04-03 01:05:33,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:05:33,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-04-03 01:05:33,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=396, Invalid=3636, Unknown=0, NotChecked=0, Total=4032 [2023-04-03 01:05:33,341 INFO L87 Difference]: Start difference. First operand 862 states and 1027 transitions. Second operand has 38 states, 25 states have (on average 1.44) internal successors, (36), 29 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 01:06:04,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:06:04,946 INFO L93 Difference]: Finished difference Result 3452 states and 5211 transitions. [2023-04-03 01:06:04,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 225 states. [2023-04-03 01:06:04,947 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 25 states have (on average 1.44) internal successors, (36), 29 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 81 [2023-04-03 01:06:04,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:06:04,954 INFO L225 Difference]: With dead ends: 3452 [2023-04-03 01:06:04,954 INFO L226 Difference]: Without dead ends: 1098 [2023-04-03 01:06:04,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 476 GetRequests, 191 SyntacticMatches, 3 SemanticMatches, 282 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30667 ImplicationChecksByTransitivity, 29.1s TimeCoverageRelationStatistics Valid=7413, Invalid=72959, Unknown=0, NotChecked=0, Total=80372 [2023-04-03 01:06:04,973 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 2494 mSDsluCounter, 1462 mSDsCounter, 0 mSdLazyCounter, 10352 mSolverCounterSat, 1873 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2501 SdHoareTripleChecker+Valid, 1696 SdHoareTripleChecker+Invalid, 12225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1873 IncrementalHoareTripleChecker+Valid, 10352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2023-04-03 01:06:04,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2501 Valid, 1696 Invalid, 12225 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1873 Valid, 10352 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2023-04-03 01:06:04,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1098 states. [2023-04-03 01:06:05,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1098 to 787. [2023-04-03 01:06:05,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 787 states, 464 states have (on average 1.2241379310344827) internal successors, (568), 503 states have internal predecessors, (568), 160 states have call successors, (160), 156 states have call predecessors, (160), 162 states have return successors, (209), 161 states have call predecessors, (209), 156 states have call successors, (209) [2023-04-03 01:06:05,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 787 states to 787 states and 937 transitions. [2023-04-03 01:06:05,054 INFO L78 Accepts]: Start accepts. Automaton has 787 states and 937 transitions. Word has length 81 [2023-04-03 01:06:05,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:06:05,054 INFO L495 AbstractCegarLoop]: Abstraction has 787 states and 937 transitions. [2023-04-03 01:06:05,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 25 states have (on average 1.44) internal successors, (36), 29 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 01:06:05,054 INFO L276 IsEmpty]: Start isEmpty. Operand 787 states and 937 transitions. [2023-04-03 01:06:05,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-04-03 01:06:05,055 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:06:05,056 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] [2023-04-03 01:06:05,081 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-03 01:06:05,260 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 01:06:05,260 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:06:05,261 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:06:05,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1856210532, now seen corresponding path program 1 times [2023-04-03 01:06:05,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:06:05,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008188137] [2023-04-03 01:06:05,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:06:05,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:06:05,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:06:05,539 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-04-03 01:06:05,540 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:06:05,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008188137] [2023-04-03 01:06:05,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008188137] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-03 01:06:05,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477896384] [2023-04-03 01:06:05,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:06:05,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 01:06:05,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 01:06:05,541 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 01:06:05,543 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 01:06:05,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:06:05,637 INFO L262 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 33 conjunts are in the unsatisfiable core [2023-04-03 01:06:05,639 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-03 01:06:05,890 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 01:06:05,890 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-03 01:06:05,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [477896384] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:06:05,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-03 01:06:05,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [14] total 26 [2023-04-03 01:06:05,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445965891] [2023-04-03 01:06:05,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:06:05,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-03 01:06:05,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:06:05,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-03 01:06:05,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2023-04-03 01:06:05,892 INFO L87 Difference]: Start difference. First operand 787 states and 937 transitions. Second operand has 14 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 6 states have call successors, (23), 5 states have call predecessors, (23), 7 states have return successors, (17), 7 states have call predecessors, (17), 6 states have call successors, (17) [2023-04-03 01:06:06,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:06:06,768 INFO L93 Difference]: Finished difference Result 1430 states and 1740 transitions. [2023-04-03 01:06:06,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-04-03 01:06:06,768 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 6 states have call successors, (23), 5 states have call predecessors, (23), 7 states have return successors, (17), 7 states have call predecessors, (17), 6 states have call successors, (17) Word has length 95 [2023-04-03 01:06:06,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:06:06,772 INFO L225 Difference]: With dead ends: 1430 [2023-04-03 01:06:06,772 INFO L226 Difference]: Without dead ends: 802 [2023-04-03 01:06:06,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 91 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 01:06:06,774 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 208 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 1293 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 1400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 1293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-03 01:06:06,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 417 Invalid, 1400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 1293 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-03 01:06:06,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 802 states. [2023-04-03 01:06:06,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 802 to 790. [2023-04-03 01:06:06,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 790 states, 475 states have (on average 1.223157894736842) internal successors, (581), 508 states have internal predecessors, (581), 163 states have call successors, (163), 161 states have call predecessors, (163), 151 states have return successors, (195), 150 states have call predecessors, (195), 159 states have call successors, (195) [2023-04-03 01:06:06,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 790 states to 790 states and 939 transitions. [2023-04-03 01:06:06,854 INFO L78 Accepts]: Start accepts. Automaton has 790 states and 939 transitions. Word has length 95 [2023-04-03 01:06:06,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:06:06,854 INFO L495 AbstractCegarLoop]: Abstraction has 790 states and 939 transitions. [2023-04-03 01:06:06,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 6 states have call successors, (23), 5 states have call predecessors, (23), 7 states have return successors, (17), 7 states have call predecessors, (17), 6 states have call successors, (17) [2023-04-03 01:06:06,855 INFO L276 IsEmpty]: Start isEmpty. Operand 790 states and 939 transitions. [2023-04-03 01:06:06,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-04-03 01:06:06,859 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:06:06,859 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] [2023-04-03 01:06:06,866 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 01:06:07,064 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 01:06:07,064 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:06:07,065 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:06:07,065 INFO L85 PathProgramCache]: Analyzing trace with hash 535032588, now seen corresponding path program 1 times [2023-04-03 01:06:07,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:06:07,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205337108] [2023-04-03 01:06:07,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:06:07,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:06:07,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:06:07,147 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-04-03 01:06:07,147 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:06:07,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205337108] [2023-04-03 01:06:07,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205337108] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:06:07,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:06:07,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-03 01:06:07,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139171401] [2023-04-03 01:06:07,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:06:07,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-03 01:06:07,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:06:07,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-03 01:06:07,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-04-03 01:06:07,149 INFO L87 Difference]: Start difference. First operand 790 states and 939 transitions. Second operand has 9 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 4 states have call successors, (23), 3 states have call predecessors, (23), 4 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2023-04-03 01:06:07,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:06:07,429 INFO L93 Difference]: Finished difference Result 1303 states and 1574 transitions. [2023-04-03 01:06:07,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-03 01:06:07,430 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 4 states have call successors, (23), 3 states have call predecessors, (23), 4 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) Word has length 95 [2023-04-03 01:06:07,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:06:07,432 INFO L225 Difference]: With dead ends: 1303 [2023-04-03 01:06:07,432 INFO L226 Difference]: Without dead ends: 718 [2023-04-03 01:06:07,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2023-04-03 01:06:07,433 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 179 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-03 01:06:07,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 394 Invalid, 658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-03 01:06:07,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2023-04-03 01:06:07,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 606. [2023-04-03 01:06:07,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 606 states, 361 states have (on average 1.1966759002770082) internal successors, (432), 389 states have internal predecessors, (432), 124 states have call successors, (124), 124 states have call predecessors, (124), 120 states have return successors, (131), 115 states have call predecessors, (131), 120 states have call successors, (131) [2023-04-03 01:06:07,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 687 transitions. [2023-04-03 01:06:07,502 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 687 transitions. Word has length 95 [2023-04-03 01:06:07,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:06:07,502 INFO L495 AbstractCegarLoop]: Abstraction has 606 states and 687 transitions. [2023-04-03 01:06:07,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 4 states have call successors, (23), 3 states have call predecessors, (23), 4 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2023-04-03 01:06:07,502 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 687 transitions. [2023-04-03 01:06:07,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-04-03 01:06:07,503 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:06:07,503 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] [2023-04-03 01:06:07,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-03 01:06:07,503 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:06:07,503 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:06:07,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1928480889, now seen corresponding path program 1 times [2023-04-03 01:06:07,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:06:07,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976242133] [2023-04-03 01:06:07,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:06:07,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:06:07,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:06:07,758 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-04-03 01:06:07,758 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:06:07,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976242133] [2023-04-03 01:06:07,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976242133] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-03 01:06:07,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868609779] [2023-04-03 01:06:07,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:06:07,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 01:06:07,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 01:06:07,765 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 01:06:07,767 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 01:06:07,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:06:07,855 INFO L262 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 51 conjunts are in the unsatisfiable core [2023-04-03 01:06:07,861 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-03 01:06:08,073 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-04-03 01:06:08,074 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-03 01:06:08,591 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-04-03 01:06:08,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [868609779] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-03 01:06:08,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1402313486] [2023-04-03 01:06:08,593 INFO L159 IcfgInterpreter]: Started Sifa with 77 locations of interest [2023-04-03 01:06:08,593 INFO L166 IcfgInterpreter]: Building call graph [2023-04-03 01:06:08,594 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-03 01:06:08,594 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-03 01:06:08,594 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-03 01:06:08,657 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 28 for LOIs [2023-04-03 01:06:08,672 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 32 for LOIs [2023-04-03 01:06:08,747 INFO L197 IcfgInterpreter]: Interpreting procedure runTest with input of size 32 for LOIs [2023-04-03 01:06:08,754 INFO L197 IcfgInterpreter]: Interpreting procedure setup with input of size 24 for LOIs [2023-04-03 01:06:08,756 INFO L197 IcfgInterpreter]: Interpreting procedure select_features with input of size 24 for LOIs [2023-04-03 01:06:08,770 INFO L197 IcfgInterpreter]: Interpreting procedure test with input of size 32 for LOIs [2023-04-03 01:06:10,143 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 33 for LOIs [2023-04-03 01:06:10,147 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 26 for LOIs [2023-04-03 01:06:10,244 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification4_spec__1 with input of size 20 for LOIs [2023-04-03 01:06:10,293 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 22 for LOIs [2023-04-03 01:06:10,294 INFO L197 IcfgInterpreter]: Interpreting procedure __automaton_fail with input of size 30 for LOIs [2023-04-03 01:06:10,295 INFO L197 IcfgInterpreter]: Interpreting procedure getWaterLevel with input of size 20 for LOIs [2023-04-03 01:06:10,296 INFO L197 IcfgInterpreter]: Interpreting procedure lowerWaterLevel with input of size 26 for LOIs [2023-04-03 01:06:10,299 INFO L197 IcfgInterpreter]: Interpreting procedure valid_product with input of size 24 for LOIs [2023-04-03 01:06:10,300 INFO L197 IcfgInterpreter]: Interpreting procedure select_helpers with input of size 24 for LOIs [2023-04-03 01:06:10,301 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment with input of size 29 for LOIs [2023-04-03 01:06:10,388 INFO L197 IcfgInterpreter]: Interpreting procedure isHighWaterLevel with input of size 22 for LOIs [2023-04-03 01:06:10,431 INFO L197 IcfgInterpreter]: Interpreting procedure isHighWaterSensorDry with input of size 22 for LOIs [2023-04-03 01:06:10,434 INFO L197 IcfgInterpreter]: Interpreting procedure activatePump with input of size 34 for LOIs [2023-04-03 01:06:10,436 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 23 for LOIs [2023-04-03 01:06:10,437 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-03 01:06:12,431 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '23486#(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 01:06:12,431 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-03 01:06:12,431 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-03 01:06:12,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 17] total 33 [2023-04-03 01:06:12,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425889200] [2023-04-03 01:06:12,431 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-03 01:06:12,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-04-03 01:06:12,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:06:12,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-04-03 01:06:12,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=611, Invalid=5395, Unknown=0, NotChecked=0, Total=6006 [2023-04-03 01:06:12,447 INFO L87 Difference]: Start difference. First operand 606 states and 687 transitions. Second operand has 33 states, 23 states have (on average 4.434782608695652) internal successors, (102), 26 states have internal predecessors, (102), 10 states have call successors, (50), 12 states have call predecessors, (50), 16 states have return successors, (41), 16 states have call predecessors, (41), 10 states have call successors, (41) [2023-04-03 01:06:13,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:06:13,985 INFO L93 Difference]: Finished difference Result 2290 states and 2917 transitions. [2023-04-03 01:06:13,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-04-03 01:06:13,986 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 23 states have (on average 4.434782608695652) internal successors, (102), 26 states have internal predecessors, (102), 10 states have call successors, (50), 12 states have call predecessors, (50), 16 states have return successors, (41), 16 states have call predecessors, (41), 10 states have call successors, (41) Word has length 98 [2023-04-03 01:06:13,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:06:13,993 INFO L225 Difference]: With dead ends: 2290 [2023-04-03 01:06:13,993 INFO L226 Difference]: Without dead ends: 1903 [2023-04-03 01:06:13,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 236 SyntacticMatches, 9 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5280 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1267, Invalid=11389, Unknown=0, NotChecked=0, Total=12656 [2023-04-03 01:06:13,996 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 672 mSDsluCounter, 1022 mSDsCounter, 0 mSdLazyCounter, 2468 mSolverCounterSat, 517 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 701 SdHoareTripleChecker+Valid, 1120 SdHoareTripleChecker+Invalid, 2985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 517 IncrementalHoareTripleChecker+Valid, 2468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-03 01:06:14,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [701 Valid, 1120 Invalid, 2985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [517 Valid, 2468 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-03 01:06:14,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1903 states. [2023-04-03 01:06:14,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1903 to 1642. [2023-04-03 01:06:14,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1642 states, 992 states have (on average 1.2006048387096775) internal successors, (1191), 1075 states have internal predecessors, (1191), 331 states have call successors, (331), 331 states have call predecessors, (331), 318 states have return successors, (392), 304 states have call predecessors, (392), 327 states have call successors, (392) [2023-04-03 01:06:14,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1642 states to 1642 states and 1914 transitions. [2023-04-03 01:06:14,320 INFO L78 Accepts]: Start accepts. Automaton has 1642 states and 1914 transitions. Word has length 98 [2023-04-03 01:06:14,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:06:14,337 INFO L495 AbstractCegarLoop]: Abstraction has 1642 states and 1914 transitions. [2023-04-03 01:06:14,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 23 states have (on average 4.434782608695652) internal successors, (102), 26 states have internal predecessors, (102), 10 states have call successors, (50), 12 states have call predecessors, (50), 16 states have return successors, (41), 16 states have call predecessors, (41), 10 states have call successors, (41) [2023-04-03 01:06:14,338 INFO L276 IsEmpty]: Start isEmpty. Operand 1642 states and 1914 transitions. [2023-04-03 01:06:14,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-04-03 01:06:14,339 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:06:14,339 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-03 01:06:14,345 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-04-03 01:06:14,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 01:06:14,540 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:06:14,540 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:06:14,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1223615789, now seen corresponding path program 2 times [2023-04-03 01:06:14,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:06:14,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972470318] [2023-04-03 01:06:14,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:06:14,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:06:14,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-04-03 01:06:14,558 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-04-03 01:06:14,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-04-03 01:06:14,613 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-04-03 01:06:14,613 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-04-03 01:06:14,614 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-03 01:06:14,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-03 01:06:14,618 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 01:06:14,621 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-03 01:06:14,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.04 01:06:14 BoogieIcfgContainer [2023-04-03 01:06:14,694 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-03 01:06:14,694 INFO L158 Benchmark]: Toolchain (without parser) took 69758.09ms. Allocated memory was 350.2MB in the beginning and 1.1GB in the end (delta: 759.2MB). Free memory was 299.2MB in the beginning and 463.9MB in the end (delta: -164.7MB). Peak memory consumption was 595.4MB. Max. memory is 8.0GB. [2023-04-03 01:06:14,694 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 196.1MB. Free memory is still 143.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-04-03 01:06:14,695 INFO L158 Benchmark]: CACSL2BoogieTranslator took 361.70ms. Allocated memory is still 350.2MB. Free memory was 298.9MB in the beginning and 280.7MB in the end (delta: 18.1MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2023-04-03 01:06:14,695 INFO L158 Benchmark]: Boogie Preprocessor took 54.26ms. Allocated memory is still 350.2MB. Free memory was 280.7MB in the beginning and 277.2MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-04-03 01:06:14,696 INFO L158 Benchmark]: RCFGBuilder took 781.55ms. Allocated memory is still 350.2MB. Free memory was 277.2MB in the beginning and 278.6MB in the end (delta: -1.4MB). Peak memory consumption was 30.4MB. Max. memory is 8.0GB. [2023-04-03 01:06:14,696 INFO L158 Benchmark]: TraceAbstraction took 68555.78ms. Allocated memory was 350.2MB in the beginning and 1.1GB in the end (delta: 759.2MB). Free memory was 278.0MB in the beginning and 463.9MB in the end (delta: -185.8MB). Peak memory consumption was 573.3MB. Max. memory is 8.0GB. [2023-04-03 01:06:14,697 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 196.1MB. Free memory is still 143.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 361.70ms. Allocated memory is still 350.2MB. Free memory was 298.9MB in the beginning and 280.7MB in the end (delta: 18.1MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * Boogie Preprocessor took 54.26ms. Allocated memory is still 350.2MB. Free memory was 280.7MB in the beginning and 277.2MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 781.55ms. Allocated memory is still 350.2MB. Free memory was 277.2MB in the beginning and 278.6MB in the end (delta: -1.4MB). Peak memory consumption was 30.4MB. Max. memory is 8.0GB. * TraceAbstraction took 68555.78ms. Allocated memory was 350.2MB in the beginning and 1.1GB in the end (delta: 759.2MB). Free memory was 278.0MB in the beginning and 463.9MB in the end (delta: -185.8MB). Peak memory consumption was 573.3MB. 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: 794]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L158] int pumpRunning = 0; [L159] int systemActive = 1; [L325] int cleanupTimeShifts = 4; [L593] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L834] int waterLevel = 1; [L835] int methaneLevelCritical = 0; [L401] int retValue_acc ; [L402] 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] [L406] 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] [L407] 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] [L408] 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] [L825] int retValue_acc ; [L828] retValue_acc = 1 [L829] return (retValue_acc); [L408] 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] [L408] tmp = valid_product() [L410] 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] [L412] 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] [L413] 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] [L392] 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] [L56] int splverifierCounter ; [L57] int tmp ; [L58] int tmp___0 ; [L59] int tmp___1 ; [L60] int tmp___2 ; [L63] 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] [L65] 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] [L67] COND TRUE splverifierCounter < 4 [L73] tmp = __VERIFIER_nondet_int() [L75] 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] [L77] 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] [L852] COND TRUE waterLevel < 2 [L853] waterLevel = waterLevel + 1 [L77] 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] [L83] tmp___0 = __VERIFIER_nondet_int() [L85] 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] [L93] tmp___2 = __VERIFIER_nondet_int() [L95] COND TRUE \read(tmp___2) 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___2=1, waterLevel=2] [L110] 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] [L165] 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] [L172] 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] [L174] 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] [L194] 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] [L197] 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] [L199] 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] [L291] int retValue_acc ; [L292] int tmp ; [L293] 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] [L297] 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] [L914] int retValue_acc ; [L917] COND FALSE !(waterLevel < 2) [L921] retValue_acc = 0 [L922] return (retValue_acc); [L297] 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] [L297] tmp = isHighWaterSensorDry() [L299] COND FALSE !(\read(tmp)) [L302] tmp___0 = 1 [L304] retValue_acc = tmp___0 [L305] return (retValue_acc); [L199] 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] [L199] tmp = isHighWaterLevel() [L201] 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] [L203] 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] [L222] pumpRunning = 1 [L203] 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] [L174] 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] [L180] 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] [L126] int tmp ; [L127] 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] [L131] 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] [L905] int retValue_acc ; [L908] retValue_acc = waterLevel [L909] return (retValue_acc); [L131] 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] [L131] tmp = getWaterLevel() [L133] 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] [L180] 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] [L110] 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___2=1, waterLevel=2] [L65] 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___2=1, waterLevel=2] [L67] COND TRUE splverifierCounter < 4 [L73] tmp = __VERIFIER_nondet_int() [L75] 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___2=1, waterLevel=2] [L83] tmp___0 = __VERIFIER_nondet_int() [L85] 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___2=1, waterLevel=2] [L93] tmp___2 = __VERIFIER_nondet_int() [L95] COND TRUE \read(tmp___2) 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___2=1, waterLevel=2] [L110] 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] [L165] 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] [L167] 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] [L840] COND TRUE waterLevel > 0 [L841] waterLevel = waterLevel - 1 [L167] 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] [L172] 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] [L174] 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] [L194] 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] [L197] 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] [L212] 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] [L174] 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] [L180] 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] [L126] int tmp ; [L127] 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] [L131] 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] [L905] int retValue_acc ; [L908] retValue_acc = waterLevel [L909] return (retValue_acc); [L131] 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] [L131] tmp = getWaterLevel() [L133] 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] [L180] 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] [L110] 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___2=1, waterLevel=1] [L65] 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___2=1, waterLevel=1] [L67] COND TRUE splverifierCounter < 4 [L73] tmp = __VERIFIER_nondet_int() [L75] 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___2=1, waterLevel=1] [L83] tmp___0 = __VERIFIER_nondet_int() [L85] 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___2=1, waterLevel=1] [L93] tmp___2 = __VERIFIER_nondet_int() [L95] COND TRUE \read(tmp___2) 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___2=1, waterLevel=1] [L110] 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] [L165] 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] [L167] 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] [L840] COND TRUE waterLevel > 0 [L841] waterLevel = waterLevel - 1 [L167] 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] [L172] 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] [L174] 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] [L194] 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] [L197] 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] [L212] 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] [L174] 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] [L180] 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] [L126] int tmp ; [L127] 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] [L131] 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] [L905] int retValue_acc ; [L908] retValue_acc = waterLevel [L909] return (retValue_acc); [L131] 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] [L131] tmp = getWaterLevel() [L133] 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] [L135] 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] [L246] int retValue_acc ; [L249] retValue_acc = pumpRunning [L250] return (retValue_acc); [L135] 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] [L135] tmp___0 = isPumpRunning() [L137] 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] [L139] 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] [L794] 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 39 procedures, 175 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 68.4s, OverallIterations: 11, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 44.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4855 SdHoareTripleChecker+Valid, 9.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4770 mSDsluCounter, 5254 SdHoareTripleChecker+Invalid, 8.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4322 mSDsCounter, 3296 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 18904 IncrementalHoareTripleChecker+Invalid, 22200 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3296 mSolverCounterUnsat, 932 mSDtfsCounter, 18904 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1342 GetRequests, 734 SyntacticMatches, 14 SemanticMatches, 594 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40453 ImplicationChecksByTransitivity, 42.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1642occurred in iteration=10, InterpolantAutomatonStates: 399, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 10 MinimizatonAttempts, 994 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.6s InterpolantComputationTime, 1165 NumberOfCodeBlocks, 1165 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 1275 ConstructedInterpolants, 0 QuantifiedInterpolants, 3694 SizeOfPredicates, 34 NumberOfNonLiveVariables, 1504 ConjunctsInSsa, 186 ConjunctsInUnsatCore, 17 InterpolantComputations, 7 PerfectInterpolantSequences, 172/250 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: 7.6s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 31, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 150, DAG_INTERPRETER_EARLY_EXITS: 2, TOOLS_POST_APPLICATIONS: 158, TOOLS_POST_TIME: 0.8s, TOOLS_POST_CALL_APPLICATIONS: 117, TOOLS_POST_CALL_TIME: 1.0s, TOOLS_POST_RETURN_APPLICATIONS: 88, TOOLS_POST_RETURN_TIME: 0.6s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 363, TOOLS_QUANTIFIERELIM_TIME: 2.3s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.1s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 481, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 91, DOMAIN_JOIN_TIME: 4.8s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 2, DOMAIN_WIDEN_TIME: 0.3s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 4, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 150, DOMAIN_ISBOTTOM_TIME: 0.1s, LOOP_SUMMARIZER_APPLICATIONS: 2, LOOP_SUMMARIZER_CACHE_MISSES: 2, LOOP_SUMMARIZER_OVERALL_TIME: 3.6s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 3.6s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 4, CALL_SUMMARIZER_APPLICATIONS: 88, CALL_SUMMARIZER_CACHE_MISSES: 23, CALL_SUMMARIZER_OVERALL_TIME: 0.1s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.1s, 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: 1912, DAG_COMPRESSION_RETAINED_NODES: 456, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-04-03 01:06:14,720 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...