/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 IntervalDomain -i ../sv-benchmarks/c/product-lines/minepump_spec4_product56.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 23:57:53,177 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 23:57:53,179 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 23:57:53,216 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 23:57:53,217 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 23:57:53,217 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 23:57:53,219 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 23:57:53,220 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 23:57:53,222 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 23:57:53,222 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 23:57:53,223 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 23:57:53,224 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 23:57:53,225 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 23:57:53,226 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 23:57:53,226 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 23:57:53,228 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 23:57:53,228 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 23:57:53,236 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 23:57:53,241 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 23:57:53,244 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 23:57:53,245 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 23:57:53,248 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 23:57:53,248 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 23:57:53,249 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 23:57:53,252 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-03-31 23:57:53,252 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-03-31 23:57:53,252 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-03-31 23:57:53,253 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-03-31 23:57:53,253 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-03-31 23:57:53,254 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-03-31 23:57:53,254 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-31 23:57:53,255 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-31 23:57:53,255 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-31 23:57:53,256 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-31 23:57:53,256 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-31 23:57:53,257 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-31 23:57:53,257 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-31 23:57:53,257 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-31 23:57:53,257 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 23:57:53,258 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 23:57:53,259 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 23:57:53,259 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 [2023-03-31 23:57:53,276 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 23:57:53,276 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 23:57:53,276 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 23:57:53,277 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 23:57:53,277 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 23:57:53,277 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 23:57:53,278 INFO L138 SettingsManager]: * User list type=DISABLED [2023-03-31 23:57:53,278 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-03-31 23:57:53,278 INFO L138 SettingsManager]: * Explicit value domain=true [2023-03-31 23:57:53,278 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-03-31 23:57:53,278 INFO L138 SettingsManager]: * Octagon Domain=false [2023-03-31 23:57:53,279 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-03-31 23:57:53,279 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-03-31 23:57:53,279 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-03-31 23:57:53,279 INFO L138 SettingsManager]: * Interval Domain=false [2023-03-31 23:57:53,279 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-03-31 23:57:53,279 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-03-31 23:57:53,280 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-03-31 23:57:53,280 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 23:57:53,280 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 23:57:53,280 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 23:57:53,280 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 23:57:53,281 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 23:57:53,281 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 23:57:53,281 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 23:57:53,281 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 23:57:53,281 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 23:57:53,281 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 23:57:53,281 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 23:57:53,281 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 23:57:53,282 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 23:57:53,282 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 23:57:53,282 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 23:57:53,282 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 23:57:53,282 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-03-31 23:57:53,282 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 23:57:53,282 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 23:57:53,283 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-03-31 23:57:53,283 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 23:57:53,283 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 23:57:53,283 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-03-31 23:57:53,283 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> IntervalDomain [2023-03-31 23:57:53,459 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 23:57:53,486 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 23:57:53,488 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 23:57:53,489 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 23:57:53,490 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 23:57:53,491 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec4_product56.cil.c [2023-03-31 23:57:54,572 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 23:57:54,841 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 23:57:54,841 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec4_product56.cil.c [2023-03-31 23:57:54,853 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3942ec64/4d66728223d74e6faf44b74ffb5854b7/FLAG2afbfd86b [2023-03-31 23:57:54,863 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3942ec64/4d66728223d74e6faf44b74ffb5854b7 [2023-03-31 23:57:54,864 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 23:57:54,865 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 23:57:54,867 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 23:57:54,868 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 23:57:54,871 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 23:57:54,871 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 11:57:54" (1/1) ... [2023-03-31 23:57:54,872 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e2f7226 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:57:54, skipping insertion in model container [2023-03-31 23:57:54,872 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 11:57:54" (1/1) ... [2023-03-31 23:57:54,878 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 23:57:54,929 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 23:57:55,230 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_product56.cil.c[17338,17351] [2023-03-31 23:57:55,252 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 23:57:55,264 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 23:57:55,335 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_product56.cil.c[17338,17351] [2023-03-31 23:57:55,337 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 23:57:55,356 INFO L208 MainTranslator]: Completed translation [2023-03-31 23:57:55,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:57:55 WrapperNode [2023-03-31 23:57:55,357 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 23:57:55,358 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 23:57:55,358 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 23:57:55,358 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 23:57:55,368 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:57:55" (1/1) ... [2023-03-31 23:57:55,368 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:57:55" (1/1) ... [2023-03-31 23:57:55,379 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:57:55" (1/1) ... [2023-03-31 23:57:55,379 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:57:55" (1/1) ... [2023-03-31 23:57:55,397 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:57:55" (1/1) ... [2023-03-31 23:57:55,404 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:57:55" (1/1) ... [2023-03-31 23:57:55,406 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:57:55" (1/1) ... [2023-03-31 23:57:55,408 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:57:55" (1/1) ... [2023-03-31 23:57:55,413 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 23:57:55,413 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 23:57:55,413 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 23:57:55,414 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 23:57:55,414 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:57:55" (1/1) ... [2023-03-31 23:57:55,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 23:57:55,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 23:57:55,445 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) [2023-03-31 23:57:55,448 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 [2023-03-31 23:57:55,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 23:57:55,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 23:57:55,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2023-03-31 23:57:55,474 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 23:57:55,474 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-03-31 23:57:55,474 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2023-03-31 23:57:55,474 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2023-03-31 23:57:55,474 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2023-03-31 23:57:55,474 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2023-03-31 23:57:55,474 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2023-03-31 23:57:55,474 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2023-03-31 23:57:55,475 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2023-03-31 23:57:55,475 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2023-03-31 23:57:55,475 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2023-03-31 23:57:55,475 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2023-03-31 23:57:55,475 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2023-03-31 23:57:55,475 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2023-03-31 23:57:55,475 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2023-03-31 23:57:55,475 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2023-03-31 23:57:55,475 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2023-03-31 23:57:55,475 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2023-03-31 23:57:55,476 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2023-03-31 23:57:55,476 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2023-03-31 23:57:55,476 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2023-03-31 23:57:55,476 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2023-03-31 23:57:55,476 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2023-03-31 23:57:55,476 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-03-31 23:57:55,476 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2023-03-31 23:57:55,476 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2023-03-31 23:57:55,476 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2023-03-31 23:57:55,476 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 23:57:55,476 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-03-31 23:57:55,477 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2023-03-31 23:57:55,477 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2023-03-31 23:57:55,477 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2023-03-31 23:57:55,477 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2023-03-31 23:57:55,477 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2023-03-31 23:57:55,477 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2023-03-31 23:57:55,477 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2023-03-31 23:57:55,477 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2023-03-31 23:57:55,477 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2023-03-31 23:57:55,477 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2023-03-31 23:57:55,477 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2023-03-31 23:57:55,478 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2023-03-31 23:57:55,478 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 23:57:55,478 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 23:57:55,478 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 23:57:55,478 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 23:57:55,478 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-03-31 23:57:55,478 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2023-03-31 23:57:55,478 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2023-03-31 23:57:55,478 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2023-03-31 23:57:55,478 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2023-03-31 23:57:55,479 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2023-03-31 23:57:55,479 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2023-03-31 23:57:55,479 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-03-31 23:57:55,479 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2023-03-31 23:57:55,479 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2023-03-31 23:57:55,479 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2023-03-31 23:57:55,479 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2023-03-31 23:57:55,479 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2023-03-31 23:57:55,479 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2023-03-31 23:57:55,480 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2023-03-31 23:57:55,480 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2023-03-31 23:57:55,480 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2023-03-31 23:57:55,480 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2023-03-31 23:57:55,480 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2023-03-31 23:57:55,480 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2023-03-31 23:57:55,480 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2023-03-31 23:57:55,480 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2023-03-31 23:57:55,480 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-03-31 23:57:55,480 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-03-31 23:57:55,480 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2023-03-31 23:57:55,481 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-03-31 23:57:55,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-03-31 23:57:55,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 23:57:55,481 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-03-31 23:57:55,481 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2023-03-31 23:57:55,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 23:57:55,481 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2023-03-31 23:57:55,481 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2023-03-31 23:57:55,481 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 23:57:55,481 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2023-03-31 23:57:55,481 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2023-03-31 23:57:55,481 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2023-03-31 23:57:55,482 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2023-03-31 23:57:55,482 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2023-03-31 23:57:55,482 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-03-31 23:57:55,482 INFO L130 BoogieDeclarations]: Found specification of procedure test [2023-03-31 23:57:55,482 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-03-31 23:57:55,482 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2023-03-31 23:57:55,482 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2023-03-31 23:57:55,482 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2023-03-31 23:57:55,482 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2023-03-31 23:57:55,482 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2023-03-31 23:57:55,482 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2023-03-31 23:57:55,483 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2023-03-31 23:57:55,483 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 23:57:55,483 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2023-03-31 23:57:55,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 23:57:55,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 23:57:55,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 23:57:55,604 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 23:57:55,607 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 23:57:56,171 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 23:57:56,331 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 23:57:56,332 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-03-31 23:57:56,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 11:57:56 BoogieIcfgContainer [2023-03-31 23:57:56,336 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 23:57:56,340 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 23:57:56,340 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 23:57:56,343 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 23:57:56,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 11:57:54" (1/3) ... [2023-03-31 23:57:56,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a18e33f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 11:57:56, skipping insertion in model container [2023-03-31 23:57:56,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:57:55" (2/3) ... [2023-03-31 23:57:56,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a18e33f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 11:57:56, skipping insertion in model container [2023-03-31 23:57:56,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 11:57:56" (3/3) ... [2023-03-31 23:57:56,345 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product56.cil.c [2023-03-31 23:57:56,361 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 23:57:56,361 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 23:57:56,411 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 23:57:56,417 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;@6b6ec440, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-03-31 23:57:56,417 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 23:57:56,421 INFO L276 IsEmpty]: Start isEmpty. Operand has 165 states, 76 states have (on average 1.2763157894736843) internal successors, (97), 93 states have internal predecessors, (97), 53 states have call successors, (53), 33 states have call predecessors, (53), 33 states have return successors, (53), 46 states have call predecessors, (53), 53 states have call successors, (53) [2023-03-31 23:57:56,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-03-31 23:57:56,430 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:57:56,431 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] [2023-03-31 23:57:56,431 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:57:56,436 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:57:56,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1199409127, now seen corresponding path program 1 times [2023-03-31 23:57:56,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:57:56,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346507444] [2023-03-31 23:57:56,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:57:56,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:57:56,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:57:56,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 23:57:56,657 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:57:56,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346507444] [2023-03-31 23:57:56,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346507444] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:57:56,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 23:57:56,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-03-31 23:57:56,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912050368] [2023-03-31 23:57:56,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:57:56,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-03-31 23:57:56,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:57:56,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-03-31 23:57:56,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-03-31 23:57:56,692 INFO L87 Difference]: Start difference. First operand has 165 states, 76 states have (on average 1.2763157894736843) internal successors, (97), 93 states have internal predecessors, (97), 53 states have call successors, (53), 33 states have call predecessors, (53), 33 states have return successors, (53), 46 states have call predecessors, (53), 53 states have call successors, (53) 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) [2023-03-31 23:57:56,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:57:56,805 INFO L93 Difference]: Finished difference Result 263 states and 320 transitions. [2023-03-31 23:57:56,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-03-31 23:57:56,812 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 [2023-03-31 23:57:56,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:57:56,822 INFO L225 Difference]: With dead ends: 263 [2023-03-31 23:57:56,822 INFO L226 Difference]: Without dead ends: 132 [2023-03-31 23:57:56,827 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 [2023-03-31 23:57:56,832 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 23:57:56,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 145 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 23:57:56,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2023-03-31 23:57:56,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2023-03-31 23:57:56,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 67 states have (on average 1.2388059701492538) internal successors, (83), 81 states have internal predecessors, (83), 38 states have call successors, (38), 31 states have call predecessors, (38), 26 states have return successors, (33), 26 states have call predecessors, (33), 33 states have call successors, (33) [2023-03-31 23:57:56,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 154 transitions. [2023-03-31 23:57:56,882 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 154 transitions. Word has length 42 [2023-03-31 23:57:56,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:57:56,882 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 154 transitions. [2023-03-31 23:57:56,882 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) [2023-03-31 23:57:56,883 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 154 transitions. [2023-03-31 23:57:56,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-03-31 23:57:56,885 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:57:56,885 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] [2023-03-31 23:57:56,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 23:57:56,886 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:57:56,887 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:57:56,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1719777040, now seen corresponding path program 1 times [2023-03-31 23:57:56,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:57:56,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140403493] [2023-03-31 23:57:56,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:57:56,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:57:56,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:57:57,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 23:57:57,020 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:57:57,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140403493] [2023-03-31 23:57:57,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140403493] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:57:57,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 23:57:57,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-03-31 23:57:57,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546244643] [2023-03-31 23:57:57,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:57:57,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-31 23:57:57,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:57:57,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-31 23:57:57,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-31 23:57:57,023 INFO L87 Difference]: Start difference. First operand 132 states and 154 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) [2023-03-31 23:57:57,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:57:57,077 INFO L93 Difference]: Finished difference Result 211 states and 245 transitions. [2023-03-31 23:57:57,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-31 23:57:57,077 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 [2023-03-31 23:57:57,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:57:57,079 INFO L225 Difference]: With dead ends: 211 [2023-03-31 23:57:57,079 INFO L226 Difference]: Without dead ends: 124 [2023-03-31 23:57:57,080 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 [2023-03-31 23:57:57,081 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 11 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-31 23:57:57,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 233 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 23:57:57,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2023-03-31 23:57:57,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2023-03-31 23:57:57,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 62 states have (on average 1.2419354838709677) internal successors, (77), 76 states have internal predecessors, (77), 35 states have call successors, (35), 30 states have call predecessors, (35), 26 states have return successors, (31), 24 states have call predecessors, (31), 31 states have call successors, (31) [2023-03-31 23:57:57,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 143 transitions. [2023-03-31 23:57:57,095 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 143 transitions. Word has length 43 [2023-03-31 23:57:57,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:57:57,096 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 143 transitions. [2023-03-31 23:57:57,096 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) [2023-03-31 23:57:57,096 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 143 transitions. [2023-03-31 23:57:57,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-03-31 23:57:57,104 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:57:57,104 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:57:57,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-31 23:57:57,104 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:57:57,106 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:57:57,106 INFO L85 PathProgramCache]: Analyzing trace with hash 266983757, now seen corresponding path program 1 times [2023-03-31 23:57:57,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:57:57,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073252877] [2023-03-31 23:57:57,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:57:57,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:57:57,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:57:57,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 23:57:57,447 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:57:57,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073252877] [2023-03-31 23:57:57,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073252877] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:57:57,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 23:57:57,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-03-31 23:57:57,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539626148] [2023-03-31 23:57:57,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:57:57,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-03-31 23:57:57,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:57:57,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-03-31 23:57:57,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-03-31 23:57:57,450 INFO L87 Difference]: Start difference. First operand 124 states and 143 transitions. Second operand has 7 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 4 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-03-31 23:57:57,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:57:57,748 INFO L93 Difference]: Finished difference Result 373 states and 445 transitions. [2023-03-31 23:57:57,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 23:57:57,749 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 4 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 47 [2023-03-31 23:57:57,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:57:57,752 INFO L225 Difference]: With dead ends: 373 [2023-03-31 23:57:57,752 INFO L226 Difference]: Without dead ends: 271 [2023-03-31 23:57:57,753 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 [2023-03-31 23:57:57,754 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 236 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-03-31 23:57:57,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 570 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-03-31 23:57:57,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2023-03-31 23:57:57,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 259. [2023-03-31 23:57:57,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 136 states have (on average 1.2720588235294117) internal successors, (173), 163 states have internal predecessors, (173), 69 states have call successors, (69), 59 states have call predecessors, (69), 53 states have return successors, (66), 49 states have call predecessors, (66), 65 states have call successors, (66) [2023-03-31 23:57:57,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 308 transitions. [2023-03-31 23:57:57,786 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 308 transitions. Word has length 47 [2023-03-31 23:57:57,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:57:57,787 INFO L495 AbstractCegarLoop]: Abstraction has 259 states and 308 transitions. [2023-03-31 23:57:57,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 4 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-03-31 23:57:57,787 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 308 transitions. [2023-03-31 23:57:57,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-03-31 23:57:57,789 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:57:57,789 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] [2023-03-31 23:57:57,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-03-31 23:57:57,789 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:57:57,790 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:57:57,790 INFO L85 PathProgramCache]: Analyzing trace with hash -388978882, now seen corresponding path program 1 times [2023-03-31 23:57:57,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:57:57,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258190896] [2023-03-31 23:57:57,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:57:57,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:57:57,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:57:58,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 23:57:58,071 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:57:58,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258190896] [2023-03-31 23:57:58,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258190896] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:57:58,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 23:57:58,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-03-31 23:57:58,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689496999] [2023-03-31 23:57:58,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:57:58,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-03-31 23:57:58,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:57:58,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-03-31 23:57:58,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-03-31 23:57:58,074 INFO L87 Difference]: Start difference. First operand 259 states and 308 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 4 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-03-31 23:57:58,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:57:58,940 INFO L93 Difference]: Finished difference Result 1074 states and 1510 transitions. [2023-03-31 23:57:58,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-03-31 23:57:58,941 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 4 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 51 [2023-03-31 23:57:58,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:57:58,954 INFO L225 Difference]: With dead ends: 1074 [2023-03-31 23:57:58,954 INFO L226 Difference]: Without dead ends: 837 [2023-03-31 23:57:58,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=148, Invalid=502, Unknown=0, NotChecked=0, Total=650 [2023-03-31 23:57:58,959 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 418 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 778 mSolverCounterSat, 315 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 1093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 315 IncrementalHoareTripleChecker+Valid, 778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-03-31 23:57:58,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [445 Valid, 521 Invalid, 1093 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [315 Valid, 778 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-03-31 23:57:58,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 837 states. [2023-03-31 23:57:59,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 837 to 753. [2023-03-31 23:57:59,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 444 states have (on average 1.2725225225225225) internal successors, (565), 500 states have internal predecessors, (565), 167 states have call successors, (167), 131 states have call predecessors, (167), 141 states have return successors, (263), 165 states have call predecessors, (263), 163 states have call successors, (263) [2023-03-31 23:57:59,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 995 transitions. [2023-03-31 23:57:59,094 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 995 transitions. Word has length 51 [2023-03-31 23:57:59,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:57:59,095 INFO L495 AbstractCegarLoop]: Abstraction has 753 states and 995 transitions. [2023-03-31 23:57:59,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 4 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-03-31 23:57:59,095 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 995 transitions. [2023-03-31 23:57:59,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-03-31 23:57:59,100 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:57:59,101 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] [2023-03-31 23:57:59,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-03-31 23:57:59,101 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:57:59,101 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:57:59,102 INFO L85 PathProgramCache]: Analyzing trace with hash 385258112, now seen corresponding path program 1 times [2023-03-31 23:57:59,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:57:59,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766639327] [2023-03-31 23:57:59,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:57:59,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:57:59,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:57:59,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 23:57:59,200 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:57:59,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766639327] [2023-03-31 23:57:59,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766639327] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:57:59,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 23:57:59,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-03-31 23:57:59,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109299121] [2023-03-31 23:57:59,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:57:59,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 23:57:59,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:57:59,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 23:57:59,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 23:57:59,202 INFO L87 Difference]: Start difference. First operand 753 states and 995 transitions. Second operand has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-03-31 23:57:59,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:57:59,395 INFO L93 Difference]: Finished difference Result 1361 states and 1729 transitions. [2023-03-31 23:57:59,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-03-31 23:57:59,396 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 54 [2023-03-31 23:57:59,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:57:59,400 INFO L225 Difference]: With dead ends: 1361 [2023-03-31 23:57:59,400 INFO L226 Difference]: Without dead ends: 709 [2023-03-31 23:57:59,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-03-31 23:57:59,403 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 93 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 23:57:59,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 535 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 23:57:59,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2023-03-31 23:57:59,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 624. [2023-03-31 23:57:59,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 624 states, 356 states have (on average 1.202247191011236) internal successors, (428), 387 states have internal predecessors, (428), 129 states have call successors, (129), 123 states have call predecessors, (129), 138 states have return successors, (180), 135 states have call predecessors, (180), 125 states have call successors, (180) [2023-03-31 23:57:59,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 737 transitions. [2023-03-31 23:57:59,458 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 737 transitions. Word has length 54 [2023-03-31 23:57:59,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:57:59,459 INFO L495 AbstractCegarLoop]: Abstraction has 624 states and 737 transitions. [2023-03-31 23:57:59,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-03-31 23:57:59,459 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 737 transitions. [2023-03-31 23:57:59,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-03-31 23:57:59,460 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:57:59,461 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:57:59,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-03-31 23:57:59,461 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:57:59,461 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:57:59,461 INFO L85 PathProgramCache]: Analyzing trace with hash 380022142, now seen corresponding path program 1 times [2023-03-31 23:57:59,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:57:59,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120449077] [2023-03-31 23:57:59,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:57:59,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:57:59,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:57:59,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 23:57:59,830 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:57:59,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120449077] [2023-03-31 23:57:59,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120449077] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:57:59,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 23:57:59,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-03-31 23:57:59,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439441070] [2023-03-31 23:57:59,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:57:59,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-03-31 23:57:59,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:57:59,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-03-31 23:57:59,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-03-31 23:57:59,832 INFO L87 Difference]: Start difference. First operand 624 states and 737 transitions. Second operand has 11 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 5 states have call successors, (20), 6 states have call predecessors, (20), 4 states have return successors, (14), 6 states have call predecessors, (14), 4 states have call successors, (14) [2023-03-31 23:58:01,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:58:01,420 INFO L93 Difference]: Finished difference Result 1770 states and 2252 transitions. [2023-03-31 23:58:01,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-03-31 23:58:01,420 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 5 states have call successors, (20), 6 states have call predecessors, (20), 4 states have return successors, (14), 6 states have call predecessors, (14), 4 states have call successors, (14) Word has length 77 [2023-03-31 23:58:01,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:58:01,428 INFO L225 Difference]: With dead ends: 1770 [2023-03-31 23:58:01,429 INFO L226 Difference]: Without dead ends: 1380 [2023-03-31 23:58:01,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 401 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=316, Invalid=1244, Unknown=0, NotChecked=0, Total=1560 [2023-03-31 23:58:01,432 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 561 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 1494 mSolverCounterSat, 395 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 587 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 1889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 395 IncrementalHoareTripleChecker+Valid, 1494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-03-31 23:58:01,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [587 Valid, 446 Invalid, 1889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [395 Valid, 1494 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-03-31 23:58:01,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1380 states. [2023-03-31 23:58:01,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1380 to 1159. [2023-03-31 23:58:01,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1159 states, 675 states have (on average 1.1896296296296296) internal successors, (803), 730 states have internal predecessors, (803), 231 states have call successors, (231), 223 states have call predecessors, (231), 252 states have return successors, (315), 248 states have call predecessors, (315), 227 states have call successors, (315) [2023-03-31 23:58:01,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1159 states to 1159 states and 1349 transitions. [2023-03-31 23:58:01,572 INFO L78 Accepts]: Start accepts. Automaton has 1159 states and 1349 transitions. Word has length 77 [2023-03-31 23:58:01,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:58:01,574 INFO L495 AbstractCegarLoop]: Abstraction has 1159 states and 1349 transitions. [2023-03-31 23:58:01,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 5 states have call successors, (20), 6 states have call predecessors, (20), 4 states have return successors, (14), 6 states have call predecessors, (14), 4 states have call successors, (14) [2023-03-31 23:58:01,574 INFO L276 IsEmpty]: Start isEmpty. Operand 1159 states and 1349 transitions. [2023-03-31 23:58:01,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-03-31 23:58:01,579 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:58:01,580 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:58:01,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-03-31 23:58:01,580 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:58:01,580 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:58:01,581 INFO L85 PathProgramCache]: Analyzing trace with hash -479256997, now seen corresponding path program 1 times [2023-03-31 23:58:01,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:58:01,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078222224] [2023-03-31 23:58:01,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:58:01,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:58:01,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:58:01,811 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 20 proven. 7 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-03-31 23:58:01,811 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:58:01,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078222224] [2023-03-31 23:58:01,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078222224] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 23:58:01,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2006817674] [2023-03-31 23:58:01,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:58:01,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 23:58:01,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 23:58:01,815 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) [2023-03-31 23:58:01,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-03-31 23:58:01,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:58:01,958 INFO L262 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 6 conjunts are in the unsatisfiable core [2023-03-31 23:58:01,965 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 23:58:02,106 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-03-31 23:58:02,107 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 23:58:02,444 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 20 proven. 7 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-03-31 23:58:02,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2006817674] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 23:58:02,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1159746448] [2023-03-31 23:58:02,466 INFO L159 IcfgInterpreter]: Started Sifa with 85 locations of interest [2023-03-31 23:58:02,466 INFO L166 IcfgInterpreter]: Building call graph [2023-03-31 23:58:02,470 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-03-31 23:58:02,474 INFO L176 IcfgInterpreter]: Starting interpretation [2023-03-31 23:58:02,475 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-03-31 23:58:02,675 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 28 for LOIs [2023-03-31 23:58:02,752 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 32 for LOIs [2023-03-31 23:58:02,947 INFO L197 IcfgInterpreter]: Interpreting procedure runTest with input of size 32 for LOIs [2023-03-31 23:58:02,961 INFO L197 IcfgInterpreter]: Interpreting procedure setup with input of size 24 for LOIs [2023-03-31 23:58:02,964 INFO L197 IcfgInterpreter]: Interpreting procedure select_features with input of size 24 for LOIs [2023-03-31 23:58:02,967 INFO L197 IcfgInterpreter]: Interpreting procedure test with input of size 32 for LOIs [2023-03-31 23:58:03,916 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 35 for LOIs [2023-03-31 23:58:03,926 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 27 for LOIs [2023-03-31 23:58:04,028 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification4_spec__1 with input of size 22 for LOIs [2023-03-31 23:58:04,076 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 22 for LOIs [2023-03-31 23:58:04,079 INFO L197 IcfgInterpreter]: Interpreting procedure __automaton_fail with input of size 22 for LOIs [2023-03-31 23:58:04,082 INFO L197 IcfgInterpreter]: Interpreting procedure getWaterLevel with input of size 22 for LOIs [2023-03-31 23:58:04,084 INFO L197 IcfgInterpreter]: Interpreting procedure lowerWaterLevel with input of size 27 for LOIs [2023-03-31 23:58:04,090 INFO L197 IcfgInterpreter]: Interpreting procedure valid_product with input of size 24 for LOIs [2023-03-31 23:58:04,093 INFO L197 IcfgInterpreter]: Interpreting procedure select_helpers with input of size 24 for LOIs [2023-03-31 23:58:04,096 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment with input of size 30 for LOIs [2023-03-31 23:58:04,128 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__lowWaterSensor with input of size 24 for LOIs [2023-03-31 23:58:04,154 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 24 for LOIs [2023-03-31 23:58:04,252 INFO L197 IcfgInterpreter]: Interpreting procedure isHighWaterLevel with input of size 22 for LOIs [2023-03-31 23:58:04,279 INFO L197 IcfgInterpreter]: Interpreting procedure isHighWaterSensorDry with input of size 22 for LOIs [2023-03-31 23:58:04,285 INFO L197 IcfgInterpreter]: Interpreting procedure activatePump with input of size 34 for LOIs [2023-03-31 23:58:04,290 INFO L180 IcfgInterpreter]: Interpretation finished [2023-03-31 23:58:06,845 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '12760#(and (= ~methaneLevelCritical~0 0) (= ~head~0.offset 0) (= 1 ~systemActive~0) (= ~head~0.base 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= ~pumpRunning~0 1) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2023-03-31 23:58:06,845 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-03-31 23:58:06,845 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-31 23:58:06,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 13 [2023-03-31 23:58:06,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836107740] [2023-03-31 23:58:06,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-31 23:58:06,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-03-31 23:58:06,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:58:06,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-03-31 23:58:06,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=357, Invalid=2505, Unknown=0, NotChecked=0, Total=2862 [2023-03-31 23:58:06,849 INFO L87 Difference]: Start difference. First operand 1159 states and 1349 transitions. Second operand has 13 states, 12 states have (on average 8.0) internal successors, (96), 12 states have internal predecessors, (96), 7 states have call successors, (37), 7 states have call predecessors, (37), 7 states have return successors, (37), 8 states have call predecessors, (37), 7 states have call successors, (37) [2023-03-31 23:58:07,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:58:07,518 INFO L93 Difference]: Finished difference Result 2052 states and 2435 transitions. [2023-03-31 23:58:07,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-03-31 23:58:07,518 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 8.0) internal successors, (96), 12 states have internal predecessors, (96), 7 states have call successors, (37), 7 states have call predecessors, (37), 7 states have return successors, (37), 8 states have call predecessors, (37), 7 states have call successors, (37) Word has length 129 [2023-03-31 23:58:07,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:58:07,525 INFO L225 Difference]: With dead ends: 2052 [2023-03-31 23:58:07,525 INFO L226 Difference]: Without dead ends: 1236 [2023-03-31 23:58:07,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 339 SyntacticMatches, 9 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1515 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=409, Invalid=3131, Unknown=0, NotChecked=0, Total=3540 [2023-03-31 23:58:07,530 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 282 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 870 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 1078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 870 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-03-31 23:58:07,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 628 Invalid, 1078 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 870 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-03-31 23:58:07,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1236 states. [2023-03-31 23:58:07,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1236 to 1143. [2023-03-31 23:58:07,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1143 states, 669 states have (on average 1.1674140508221225) internal successors, (781), 722 states have internal predecessors, (781), 223 states have call successors, (223), 217 states have call predecessors, (223), 250 states have return successors, (275), 244 states have call predecessors, (275), 219 states have call successors, (275) [2023-03-31 23:58:07,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1143 states to 1143 states and 1279 transitions. [2023-03-31 23:58:07,665 INFO L78 Accepts]: Start accepts. Automaton has 1143 states and 1279 transitions. Word has length 129 [2023-03-31 23:58:07,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:58:07,665 INFO L495 AbstractCegarLoop]: Abstraction has 1143 states and 1279 transitions. [2023-03-31 23:58:07,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 8.0) internal successors, (96), 12 states have internal predecessors, (96), 7 states have call successors, (37), 7 states have call predecessors, (37), 7 states have return successors, (37), 8 states have call predecessors, (37), 7 states have call successors, (37) [2023-03-31 23:58:07,666 INFO L276 IsEmpty]: Start isEmpty. Operand 1143 states and 1279 transitions. [2023-03-31 23:58:07,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-03-31 23:58:07,669 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:58:07,669 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:58:07,679 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-03-31 23:58:07,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 23:58:07,877 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:58:07,877 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:58:07,877 INFO L85 PathProgramCache]: Analyzing trace with hash -286671988, now seen corresponding path program 1 times [2023-03-31 23:58:07,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:58:07,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91284384] [2023-03-31 23:58:07,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:58:07,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:58:07,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:58:07,932 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-03-31 23:58:07,933 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:58:07,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91284384] [2023-03-31 23:58:07,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91284384] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:58:07,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 23:58:07,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-03-31 23:58:07,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426161866] [2023-03-31 23:58:07,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:58:07,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-31 23:58:07,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:58:07,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-31 23:58:07,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-31 23:58:07,935 INFO L87 Difference]: Start difference. First operand 1143 states and 1279 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (26), 3 states have call predecessors, (26), 2 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2023-03-31 23:58:08,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:58:08,037 INFO L93 Difference]: Finished difference Result 1825 states and 2056 transitions. [2023-03-31 23:58:08,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-31 23:58:08,038 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (26), 3 states have call predecessors, (26), 2 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) Word has length 133 [2023-03-31 23:58:08,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:58:08,044 INFO L225 Difference]: With dead ends: 1825 [2023-03-31 23:58:08,044 INFO L226 Difference]: Without dead ends: 704 [2023-03-31 23:58:08,047 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 [2023-03-31 23:58:08,049 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 39 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-31 23:58:08,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 269 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 23:58:08,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2023-03-31 23:58:08,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 679. [2023-03-31 23:58:08,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 679 states, 396 states have (on average 1.1616161616161615) internal successors, (460), 433 states have internal predecessors, (460), 135 states have call successors, (135), 132 states have call predecessors, (135), 147 states have return successors, (154), 143 states have call predecessors, (154), 131 states have call successors, (154) [2023-03-31 23:58:08,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 749 transitions. [2023-03-31 23:58:08,113 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 749 transitions. Word has length 133 [2023-03-31 23:58:08,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:58:08,113 INFO L495 AbstractCegarLoop]: Abstraction has 679 states and 749 transitions. [2023-03-31 23:58:08,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (26), 3 states have call predecessors, (26), 2 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2023-03-31 23:58:08,114 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 749 transitions. [2023-03-31 23:58:08,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-03-31 23:58:08,117 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:58:08,117 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:58:08,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-03-31 23:58:08,118 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:58:08,118 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:58:08,118 INFO L85 PathProgramCache]: Analyzing trace with hash -2106855713, now seen corresponding path program 1 times [2023-03-31 23:58:08,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:58:08,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806352596] [2023-03-31 23:58:08,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:58:08,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:58:08,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:58:08,563 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-03-31 23:58:08,563 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:58:08,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806352596] [2023-03-31 23:58:08,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806352596] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 23:58:08,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720434817] [2023-03-31 23:58:08,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:58:08,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 23:58:08,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 23:58:08,565 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) [2023-03-31 23:58:08,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-03-31 23:58:08,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:58:08,701 INFO L262 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 33 conjunts are in the unsatisfiable core [2023-03-31 23:58:08,714 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 23:58:08,999 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 23:58:08,999 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-31 23:58:08,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720434817] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:58:08,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-31 23:58:08,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [14] total 22 [2023-03-31 23:58:08,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703784882] [2023-03-31 23:58:09,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:58:09,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-03-31 23:58:09,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:58:09,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-03-31 23:58:09,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2023-03-31 23:58:09,002 INFO L87 Difference]: Start difference. First operand 679 states and 749 transitions. Second operand has 14 states, 11 states have (on average 7.181818181818182) internal successors, (79), 11 states have internal predecessors, (79), 6 states have call successors, (31), 5 states have call predecessors, (31), 7 states have return successors, (25), 7 states have call predecessors, (25), 6 states have call successors, (25) [2023-03-31 23:58:10,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:58:10,231 INFO L93 Difference]: Finished difference Result 1252 states and 1413 transitions. [2023-03-31 23:58:10,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-03-31 23:58:10,231 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 7.181818181818182) internal successors, (79), 11 states have internal predecessors, (79), 6 states have call successors, (31), 5 states have call predecessors, (31), 7 states have return successors, (25), 7 states have call predecessors, (25), 6 states have call successors, (25) Word has length 135 [2023-03-31 23:58:10,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:58:10,236 INFO L225 Difference]: With dead ends: 1252 [2023-03-31 23:58:10,236 INFO L226 Difference]: Without dead ends: 769 [2023-03-31 23:58:10,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 372 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=220, Invalid=1420, Unknown=0, NotChecked=0, Total=1640 [2023-03-31 23:58:10,240 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 219 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 1719 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 1820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-03-31 23:58:10,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 404 Invalid, 1820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1719 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-03-31 23:58:10,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2023-03-31 23:58:10,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 751. [2023-03-31 23:58:10,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 751 states, 445 states have (on average 1.1617977528089887) internal successors, (517), 485 states have internal predecessors, (517), 156 states have call successors, (156), 154 states have call predecessors, (156), 149 states have return successors, (163), 146 states have call predecessors, (163), 152 states have call successors, (163) [2023-03-31 23:58:10,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 836 transitions. [2023-03-31 23:58:10,301 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 836 transitions. Word has length 135 [2023-03-31 23:58:10,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:58:10,303 INFO L495 AbstractCegarLoop]: Abstraction has 751 states and 836 transitions. [2023-03-31 23:58:10,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 7.181818181818182) internal successors, (79), 11 states have internal predecessors, (79), 6 states have call successors, (31), 5 states have call predecessors, (31), 7 states have return successors, (25), 7 states have call predecessors, (25), 6 states have call successors, (25) [2023-03-31 23:58:10,303 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 836 transitions. [2023-03-31 23:58:10,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-03-31 23:58:10,306 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:58:10,306 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:58:10,314 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-03-31 23:58:10,512 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,SelfDestructingSolverStorable8 [2023-03-31 23:58:10,512 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:58:10,513 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:58:10,513 INFO L85 PathProgramCache]: Analyzing trace with hash -141912799, now seen corresponding path program 1 times [2023-03-31 23:58:10,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:58:10,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840817858] [2023-03-31 23:58:10,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:58:10,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:58:10,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:58:11,036 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-03-31 23:58:11,036 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:58:11,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840817858] [2023-03-31 23:58:11,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840817858] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 23:58:11,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69034308] [2023-03-31 23:58:11,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:58:11,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 23:58:11,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 23:58:11,040 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) [2023-03-31 23:58:11,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-03-31 23:58:11,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:58:11,170 INFO L262 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 51 conjunts are in the unsatisfiable core [2023-03-31 23:58:11,177 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 23:58:11,457 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-03-31 23:58:11,458 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 23:58:12,188 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-03-31 23:58:12,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [69034308] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 23:58:12,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1013293366] [2023-03-31 23:58:12,192 INFO L159 IcfgInterpreter]: Started Sifa with 108 locations of interest [2023-03-31 23:58:12,192 INFO L166 IcfgInterpreter]: Building call graph [2023-03-31 23:58:12,193 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-03-31 23:58:12,193 INFO L176 IcfgInterpreter]: Starting interpretation [2023-03-31 23:58:12,193 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-03-31 23:58:12,306 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 28 for LOIs [2023-03-31 23:58:12,331 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 32 for LOIs [2023-03-31 23:58:12,423 INFO L197 IcfgInterpreter]: Interpreting procedure runTest with input of size 32 for LOIs [2023-03-31 23:58:12,431 INFO L197 IcfgInterpreter]: Interpreting procedure test with input of size 32 for LOIs [2023-03-31 23:58:12,967 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 33 for LOIs [2023-03-31 23:58:12,977 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 26 for LOIs [2023-03-31 23:58:13,045 INFO L197 IcfgInterpreter]: Interpreting procedure lowerWaterLevel with input of size 26 for LOIs [2023-03-31 23:58:13,050 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment with input of size 29 for LOIs [2023-03-31 23:58:13,124 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__lowWaterSensor with input of size 26 for LOIs [2023-03-31 23:58:13,191 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 26 for LOIs [2023-03-31 23:58:13,258 INFO L197 IcfgInterpreter]: Interpreting procedure isHighWaterLevel with input of size 22 for LOIs [2023-03-31 23:58:13,278 INFO L197 IcfgInterpreter]: Interpreting procedure isHighWaterSensorDry with input of size 22 for LOIs [2023-03-31 23:58:13,282 INFO L197 IcfgInterpreter]: Interpreting procedure activatePump with input of size 34 for LOIs [2023-03-31 23:58:13,286 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 23 for LOIs [2023-03-31 23:58:13,287 INFO L197 IcfgInterpreter]: Interpreting procedure isLowWaterLevel with input of size 23 for LOIs [2023-03-31 23:58:13,305 INFO L197 IcfgInterpreter]: Interpreting procedure isLowWaterSensorDry with input of size 23 for LOIs [2023-03-31 23:58:13,308 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneAlarm with input of size 23 for LOIs [2023-03-31 23:58:13,321 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 23 for LOIs [2023-03-31 23:58:13,323 INFO L197 IcfgInterpreter]: Interpreting procedure setup with input of size 24 for LOIs [2023-03-31 23:58:13,324 INFO L197 IcfgInterpreter]: Interpreting procedure select_features with input of size 24 for LOIs [2023-03-31 23:58:13,326 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification4_spec__1 with input of size 20 for LOIs [2023-03-31 23:58:13,354 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 20 for LOIs [2023-03-31 23:58:13,356 INFO L197 IcfgInterpreter]: Interpreting procedure __automaton_fail with input of size 30 for LOIs [2023-03-31 23:58:13,358 INFO L197 IcfgInterpreter]: Interpreting procedure getWaterLevel with input of size 20 for LOIs [2023-03-31 23:58:13,361 INFO L197 IcfgInterpreter]: Interpreting procedure valid_product with input of size 24 for LOIs [2023-03-31 23:58:13,364 INFO L197 IcfgInterpreter]: Interpreting procedure select_helpers with input of size 24 for LOIs [2023-03-31 23:58:13,365 INFO L180 IcfgInterpreter]: Interpretation finished [2023-03-31 23:58:16,606 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '25028#(and (= ~methaneLevelCritical~0 0) (= ~head~0.offset 0) (= 1 ~systemActive~0) (= ~head~0.base 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2023-03-31 23:58:16,606 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-03-31 23:58:16,606 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-31 23:58:16,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 17] total 36 [2023-03-31 23:58:16,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033635890] [2023-03-31 23:58:16,607 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-31 23:58:16,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-03-31 23:58:16,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:58:16,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-03-31 23:58:16,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=577, Invalid=6905, Unknown=0, NotChecked=0, Total=7482 [2023-03-31 23:58:16,616 INFO L87 Difference]: Start difference. First operand 751 states and 836 transitions. Second operand has 36 states, 26 states have (on average 6.153846153846154) internal successors, (160), 29 states have internal predecessors, (160), 13 states have call successors, (69), 13 states have call predecessors, (69), 18 states have return successors, (59), 19 states have call predecessors, (59), 13 states have call successors, (59) [2023-03-31 23:58:21,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:58:21,467 INFO L93 Difference]: Finished difference Result 3031 states and 3824 transitions. [2023-03-31 23:58:21,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2023-03-31 23:58:21,467 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 26 states have (on average 6.153846153846154) internal successors, (160), 29 states have internal predecessors, (160), 13 states have call successors, (69), 13 states have call predecessors, (69), 18 states have return successors, (59), 19 states have call predecessors, (59), 13 states have call successors, (59) Word has length 138 [2023-03-31 23:58:21,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:58:21,481 INFO L225 Difference]: With dead ends: 3031 [2023-03-31 23:58:21,481 INFO L226 Difference]: Without dead ends: 2640 [2023-03-31 23:58:21,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 540 GetRequests, 355 SyntacticMatches, 15 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12921 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=2583, Invalid=26829, Unknown=0, NotChecked=0, Total=29412 [2023-03-31 23:58:21,492 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 1453 mSDsluCounter, 1260 mSDsCounter, 0 mSdLazyCounter, 4890 mSolverCounterSat, 1244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 1374 SdHoareTripleChecker+Invalid, 6134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1244 IncrementalHoareTripleChecker+Valid, 4890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-03-31 23:58:21,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1482 Valid, 1374 Invalid, 6134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1244 Valid, 4890 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-03-31 23:58:21,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2640 states. [2023-03-31 23:58:21,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2640 to 2151. [2023-03-31 23:58:21,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2151 states, 1280 states have (on average 1.159375) internal successors, (1484), 1391 states have internal predecessors, (1484), 450 states have call successors, (450), 442 states have call predecessors, (450), 420 states have return successors, (511), 411 states have call predecessors, (511), 446 states have call successors, (511) [2023-03-31 23:58:21,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2151 states to 2151 states and 2445 transitions. [2023-03-31 23:58:21,722 INFO L78 Accepts]: Start accepts. Automaton has 2151 states and 2445 transitions. Word has length 138 [2023-03-31 23:58:21,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:58:21,723 INFO L495 AbstractCegarLoop]: Abstraction has 2151 states and 2445 transitions. [2023-03-31 23:58:21,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 26 states have (on average 6.153846153846154) internal successors, (160), 29 states have internal predecessors, (160), 13 states have call successors, (69), 13 states have call predecessors, (69), 18 states have return successors, (59), 19 states have call predecessors, (59), 13 states have call successors, (59) [2023-03-31 23:58:21,723 INFO L276 IsEmpty]: Start isEmpty. Operand 2151 states and 2445 transitions. [2023-03-31 23:58:21,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2023-03-31 23:58:21,727 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:58:21,727 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:58:21,736 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-03-31 23:58:21,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 23:58:21,934 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:58:21,935 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:58:21,935 INFO L85 PathProgramCache]: Analyzing trace with hash -872341410, now seen corresponding path program 2 times [2023-03-31 23:58:21,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:58:21,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782396148] [2023-03-31 23:58:21,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:58:21,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:58:21,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:58:22,637 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 39 proven. 20 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-03-31 23:58:22,638 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:58:22,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782396148] [2023-03-31 23:58:22,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782396148] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 23:58:22,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131549257] [2023-03-31 23:58:22,638 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-03-31 23:58:22,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 23:58:22,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 23:58:22,641 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) [2023-03-31 23:58:22,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-03-31 23:58:22,786 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-03-31 23:58:22,786 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-03-31 23:58:22,789 INFO L262 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 43 conjunts are in the unsatisfiable core [2023-03-31 23:58:22,794 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 23:58:23,253 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-03-31 23:58:23,253 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-31 23:58:23,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1131549257] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:58:23,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-31 23:58:23,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [17] total 27 [2023-03-31 23:58:23,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488347231] [2023-03-31 23:58:23,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:58:23,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-03-31 23:58:23,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:58:23,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-03-31 23:58:23,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=590, Unknown=0, NotChecked=0, Total=702 [2023-03-31 23:58:23,256 INFO L87 Difference]: Start difference. First operand 2151 states and 2445 transitions. Second operand has 12 states, 9 states have (on average 11.88888888888889) internal successors, (107), 8 states have internal predecessors, (107), 4 states have call successors, (42), 4 states have call predecessors, (42), 6 states have return successors, (38), 6 states have call predecessors, (38), 4 states have call successors, (38) [2023-03-31 23:58:24,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:58:24,084 INFO L93 Difference]: Finished difference Result 4144 states and 4753 transitions. [2023-03-31 23:58:24,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-03-31 23:58:24,085 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 11.88888888888889) internal successors, (107), 8 states have internal predecessors, (107), 4 states have call successors, (42), 4 states have call predecessors, (42), 6 states have return successors, (38), 6 states have call predecessors, (38), 4 states have call successors, (38) Word has length 199 [2023-03-31 23:58:24,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:58:24,096 INFO L225 Difference]: With dead ends: 4144 [2023-03-31 23:58:24,096 INFO L226 Difference]: Without dead ends: 2323 [2023-03-31 23:58:24,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=167, Invalid=825, Unknown=0, NotChecked=0, Total=992 [2023-03-31 23:58:24,102 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 128 mSDsluCounter, 704 mSDsCounter, 0 mSdLazyCounter, 1102 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 920 SdHoareTripleChecker+Invalid, 1111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-03-31 23:58:24,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 920 Invalid, 1111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1102 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-03-31 23:58:24,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2323 states. [2023-03-31 23:58:24,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2323 to 2233. [2023-03-31 23:58:24,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2233 states, 1330 states have (on average 1.1541353383458646) internal successors, (1535), 1441 states have internal predecessors, (1535), 468 states have call successors, (468), 462 states have call predecessors, (468), 434 states have return successors, (527), 425 states have call predecessors, (527), 464 states have call successors, (527) [2023-03-31 23:58:24,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2233 states to 2233 states and 2530 transitions. [2023-03-31 23:58:24,341 INFO L78 Accepts]: Start accepts. Automaton has 2233 states and 2530 transitions. Word has length 199 [2023-03-31 23:58:24,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:58:24,341 INFO L495 AbstractCegarLoop]: Abstraction has 2233 states and 2530 transitions. [2023-03-31 23:58:24,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 11.88888888888889) internal successors, (107), 8 states have internal predecessors, (107), 4 states have call successors, (42), 4 states have call predecessors, (42), 6 states have return successors, (38), 6 states have call predecessors, (38), 4 states have call successors, (38) [2023-03-31 23:58:24,342 INFO L276 IsEmpty]: Start isEmpty. Operand 2233 states and 2530 transitions. [2023-03-31 23:58:24,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2023-03-31 23:58:24,345 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:58:24,346 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-03-31 23:58:24,356 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-03-31 23:58:24,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 23:58:24,552 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:58:24,552 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:58:24,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1198087573, now seen corresponding path program 1 times [2023-03-31 23:58:24,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:58:24,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981470913] [2023-03-31 23:58:24,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:58:24,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:58:24,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:58:24,789 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 70 proven. 7 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2023-03-31 23:58:24,789 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:58:24,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981470913] [2023-03-31 23:58:24,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981470913] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 23:58:24,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669318750] [2023-03-31 23:58:24,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:58:24,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 23:58:24,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 23:58:24,791 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-31 23:58:24,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-03-31 23:58:24,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:58:24,956 INFO L262 TraceCheckSpWp]: Trace formula consists of 725 conjuncts, 56 conjunts are in the unsatisfiable core [2023-03-31 23:58:24,963 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 23:58:25,455 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 145 proven. 21 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-03-31 23:58:25,455 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 23:58:27,220 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 76 proven. 7 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2023-03-31 23:58:27,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1669318750] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 23:58:27,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [747303143] [2023-03-31 23:58:27,224 INFO L159 IcfgInterpreter]: Started Sifa with 111 locations of interest [2023-03-31 23:58:27,224 INFO L166 IcfgInterpreter]: Building call graph [2023-03-31 23:58:27,224 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-03-31 23:58:27,224 INFO L176 IcfgInterpreter]: Starting interpretation [2023-03-31 23:58:27,224 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-03-31 23:58:27,309 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 28 for LOIs [2023-03-31 23:58:27,333 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 32 for LOIs [2023-03-31 23:58:27,413 INFO L197 IcfgInterpreter]: Interpreting procedure runTest with input of size 32 for LOIs [2023-03-31 23:58:27,421 INFO L197 IcfgInterpreter]: Interpreting procedure test with input of size 32 for LOIs [2023-03-31 23:58:27,899 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 33 for LOIs [2023-03-31 23:58:27,919 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 26 for LOIs [2023-03-31 23:58:28,011 INFO L197 IcfgInterpreter]: Interpreting procedure lowerWaterLevel with input of size 26 for LOIs [2023-03-31 23:58:28,016 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment with input of size 29 for LOIs [2023-03-31 23:58:28,122 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__lowWaterSensor with input of size 26 for LOIs [2023-03-31 23:58:28,187 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 26 for LOIs [2023-03-31 23:58:28,253 INFO L197 IcfgInterpreter]: Interpreting procedure isHighWaterLevel with input of size 22 for LOIs [2023-03-31 23:58:28,272 INFO L197 IcfgInterpreter]: Interpreting procedure isHighWaterSensorDry with input of size 22 for LOIs [2023-03-31 23:58:28,275 INFO L197 IcfgInterpreter]: Interpreting procedure activatePump with input of size 34 for LOIs [2023-03-31 23:58:28,278 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 23 for LOIs [2023-03-31 23:58:28,280 INFO L197 IcfgInterpreter]: Interpreting procedure isLowWaterLevel with input of size 23 for LOIs [2023-03-31 23:58:28,296 INFO L197 IcfgInterpreter]: Interpreting procedure isLowWaterSensorDry with input of size 23 for LOIs [2023-03-31 23:58:28,299 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneAlarm with input of size 23 for LOIs [2023-03-31 23:58:28,312 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 23 for LOIs [2023-03-31 23:58:28,315 INFO L197 IcfgInterpreter]: Interpreting procedure deactivatePump with input of size 33 for LOIs [2023-03-31 23:58:28,318 INFO L197 IcfgInterpreter]: Interpreting procedure setup with input of size 24 for LOIs [2023-03-31 23:58:28,319 INFO L197 IcfgInterpreter]: Interpreting procedure select_features with input of size 24 for LOIs [2023-03-31 23:58:28,321 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification4_spec__1 with input of size 20 for LOIs [2023-03-31 23:58:28,351 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 20 for LOIs [2023-03-31 23:58:28,352 INFO L197 IcfgInterpreter]: Interpreting procedure __automaton_fail with input of size 30 for LOIs [2023-03-31 23:58:28,355 INFO L197 IcfgInterpreter]: Interpreting procedure getWaterLevel with input of size 20 for LOIs [2023-03-31 23:58:28,357 INFO L197 IcfgInterpreter]: Interpreting procedure valid_product with input of size 24 for LOIs [2023-03-31 23:58:28,359 INFO L197 IcfgInterpreter]: Interpreting procedure select_helpers with input of size 24 for LOIs [2023-03-31 23:58:28,361 INFO L180 IcfgInterpreter]: Interpretation finished [2023-03-31 23:58:32,810 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '43913#(and (= ~methaneLevelCritical~0 0) (= ~head~0.offset 0) (= 1 ~systemActive~0) (= ~head~0.base 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2023-03-31 23:58:32,810 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-03-31 23:58:32,810 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-31 23:58:32,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 22, 14] total 40 [2023-03-31 23:58:32,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253393913] [2023-03-31 23:58:32,811 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-31 23:58:32,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-03-31 23:58:32,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:58:32,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-03-31 23:58:32,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=483, Invalid=7889, Unknown=0, NotChecked=0, Total=8372 [2023-03-31 23:58:32,815 INFO L87 Difference]: Start difference. First operand 2233 states and 2530 transitions. Second operand has 40 states, 28 states have (on average 6.285714285714286) internal successors, (176), 29 states have internal predecessors, (176), 10 states have call successors, (63), 9 states have call predecessors, (63), 21 states have return successors, (71), 19 states have call predecessors, (71), 10 states have call successors, (71) [2023-03-31 23:58:36,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:58:36,958 INFO L93 Difference]: Finished difference Result 3678 states and 4156 transitions. [2023-03-31 23:58:36,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2023-03-31 23:58:36,959 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 28 states have (on average 6.285714285714286) internal successors, (176), 29 states have internal predecessors, (176), 10 states have call successors, (63), 9 states have call predecessors, (63), 21 states have return successors, (71), 19 states have call predecessors, (71), 10 states have call successors, (71) Word has length 229 [2023-03-31 23:58:36,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:58:36,960 INFO L225 Difference]: With dead ends: 3678 [2023-03-31 23:58:36,961 INFO L226 Difference]: Without dead ends: 0 [2023-03-31 23:58:36,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 765 GetRequests, 592 SyntacticMatches, 28 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8447 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=1313, Invalid=20149, Unknown=0, NotChecked=0, Total=21462 [2023-03-31 23:58:36,970 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 508 mSDsluCounter, 1809 mSDsCounter, 0 mSdLazyCounter, 6629 mSolverCounterSat, 470 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 508 SdHoareTripleChecker+Valid, 1920 SdHoareTripleChecker+Invalid, 7099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 470 IncrementalHoareTripleChecker+Valid, 6629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-03-31 23:58:36,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [508 Valid, 1920 Invalid, 7099 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [470 Valid, 6629 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-03-31 23:58:36,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-03-31 23:58:36,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-03-31 23:58:36,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-03-31 23:58:36,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-03-31 23:58:36,972 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 229 [2023-03-31 23:58:36,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:58:36,972 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-03-31 23:58:36,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 28 states have (on average 6.285714285714286) internal successors, (176), 29 states have internal predecessors, (176), 10 states have call successors, (63), 9 states have call predecessors, (63), 21 states have return successors, (71), 19 states have call predecessors, (71), 10 states have call successors, (71) [2023-03-31 23:58:36,973 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-03-31 23:58:36,973 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-03-31 23:58:36,975 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-03-31 23:58:36,985 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-03-31 23:58:37,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-03-31 23:58:37,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.