/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 EqDomain -i ../sv-benchmarks/c/product-lines/minepump_spec1_product44.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 12:00:45,869 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 12:00:45,871 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 12:00:45,900 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 12:00:45,903 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 12:00:45,905 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 12:00:45,908 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 12:00:45,911 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 12:00:45,912 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 12:00:45,917 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 12:00:45,919 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 12:00:45,920 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 12:00:45,920 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 12:00:45,922 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 12:00:45,923 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 12:00:45,924 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 12:00:45,924 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 12:00:45,925 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 12:00:45,926 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 12:00:45,931 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 12:00:45,932 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 12:00:45,933 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 12:00:45,934 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 12:00:45,935 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 12:00:45,941 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 12:00:45,941 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 12:00:45,941 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 12:00:45,942 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 12:00:45,942 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 12:00:45,943 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 12:00:45,943 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 12:00:45,943 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 12:00:45,944 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 12:00:45,944 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 12:00:45,945 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 12:00:45,945 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 12:00:45,945 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 12:00:45,945 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 12:00:45,946 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 12:00:45,946 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 12:00:45,947 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 12:00:45,948 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-01 12:00:45,974 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 12:00:45,974 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 12:00:45,975 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 12:00:45,975 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 12:00:45,975 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 12:00:45,975 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 12:00:45,976 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 12:00:45,976 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 12:00:45,976 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 12:00:45,976 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 12:00:45,976 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 12:00:45,977 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 12:00:45,977 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 12:00:45,977 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 12:00:45,977 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 12:00:45,977 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 12:00:45,977 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 12:00:45,977 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 12:00:45,978 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 12:00:45,978 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 12:00:45,978 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 12:00:45,978 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 12:00:45,978 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 12:00:45,978 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 12:00:45,978 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 12:00:45,978 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 12:00:45,978 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 12:00:45,978 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 12:00:45,979 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 12:00:45,979 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 12:00:45,979 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 12:00:45,979 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 12:00:45,979 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 12:00:45,979 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 12:00:45,979 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 12:00:45,980 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 12:00:45,980 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 12:00:45,980 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 12:00:45,980 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 12:00:45,980 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 12:00:45,980 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 12:00:45,980 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> EqDomain [2023-04-01 12:00:46,190 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 12:00:46,213 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 12:00:46,214 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 12:00:46,216 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 12:00:46,216 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 12:00:46,217 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec1_product44.cil.c [2023-04-01 12:00:47,288 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 12:00:47,458 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 12:00:47,458 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec1_product44.cil.c [2023-04-01 12:00:47,474 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8aee55c1/69b5b48b926e4075bb402107aca0657a/FLAG70422d4c1 [2023-04-01 12:00:47,487 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8aee55c1/69b5b48b926e4075bb402107aca0657a [2023-04-01 12:00:47,489 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 12:00:47,490 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 12:00:47,491 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 12:00:47,491 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 12:00:47,493 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 12:00:47,493 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:00:47" (1/1) ... [2023-04-01 12:00:47,494 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@195276e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:00:47, skipping insertion in model container [2023-04-01 12:00:47,494 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:00:47" (1/1) ... [2023-04-01 12:00:47,499 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 12:00:47,528 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 12:00:47,626 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_spec1_product44.cil.c[1605,1618] [2023-04-01 12:00:47,708 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 12:00:47,722 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 12:00:47,737 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_spec1_product44.cil.c[1605,1618] [2023-04-01 12:00:47,800 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 12:00:47,829 INFO L208 MainTranslator]: Completed translation [2023-04-01 12:00:47,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:00:47 WrapperNode [2023-04-01 12:00:47,829 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 12:00:47,830 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 12:00:47,830 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 12:00:47,830 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 12:00:47,839 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:00:47" (1/1) ... [2023-04-01 12:00:47,839 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:00:47" (1/1) ... [2023-04-01 12:00:47,862 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:00:47" (1/1) ... [2023-04-01 12:00:47,863 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:00:47" (1/1) ... [2023-04-01 12:00:47,888 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:00:47" (1/1) ... [2023-04-01 12:00:47,896 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:00:47" (1/1) ... [2023-04-01 12:00:47,899 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:00:47" (1/1) ... [2023-04-01 12:00:47,901 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:00:47" (1/1) ... [2023-04-01 12:00:47,904 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 12:00:47,905 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 12:00:47,905 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 12:00:47,905 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 12:00:47,905 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:00:47" (1/1) ... [2023-04-01 12:00:47,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 12:00:47,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 12:00:47,929 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 12:00:47,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 12:00:47,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 12:00:47,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 12:00:47,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2023-04-01 12:00:47,955 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 12:00:47,955 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-04-01 12:00:47,955 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2023-04-01 12:00:47,955 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2023-04-01 12:00:47,955 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2023-04-01 12:00:47,955 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2023-04-01 12:00:47,955 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2023-04-01 12:00:47,955 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2023-04-01 12:00:47,955 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2023-04-01 12:00:47,955 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-04-01 12:00:47,955 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2023-04-01 12:00:47,955 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2023-04-01 12:00:47,956 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2023-04-01 12:00:47,956 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2023-04-01 12:00:47,956 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2023-04-01 12:00:47,956 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2023-04-01 12:00:47,956 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2023-04-01 12:00:47,956 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2023-04-01 12:00:47,956 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2023-04-01 12:00:47,956 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2023-04-01 12:00:47,956 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2023-04-01 12:00:47,956 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2023-04-01 12:00:47,956 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2023-04-01 12:00:47,956 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2023-04-01 12:00:47,957 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2023-04-01 12:00:47,957 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2023-04-01 12:00:47,957 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2023-04-01 12:00:47,957 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2023-04-01 12:00:47,957 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2023-04-01 12:00:47,957 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2023-04-01 12:00:47,957 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2023-04-01 12:00:47,957 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2023-04-01 12:00:47,957 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2023-04-01 12:00:47,957 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-04-01 12:00:47,957 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2023-04-01 12:00:47,957 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2023-04-01 12:00:47,958 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2023-04-01 12:00:47,958 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 12:00:47,958 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 12:00:47,958 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 12:00:47,958 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 12:00:47,958 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 12:00:47,958 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 12:00:47,958 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2023-04-01 12:00:47,958 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-04-01 12:00:47,958 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-01 12:00:47,958 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-01 12:00:47,959 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2023-04-01 12:00:47,959 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-01 12:00:47,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-01 12:00:47,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 12:00:47,959 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-01 12:00:47,959 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2023-04-01 12:00:47,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 12:00:47,959 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2023-04-01 12:00:47,959 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2023-04-01 12:00:47,959 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 12:00:47,959 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2023-04-01 12:00:47,959 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2023-04-01 12:00:47,960 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2023-04-01 12:00:47,960 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2023-04-01 12:00:47,960 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2023-04-01 12:00:47,960 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2023-04-01 12:00:47,960 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2023-04-01 12:00:47,960 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-04-01 12:00:47,960 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-04-01 12:00:47,960 INFO L130 BoogieDeclarations]: Found specification of procedure test [2023-04-01 12:00:47,960 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2023-04-01 12:00:47,960 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2023-04-01 12:00:47,960 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2023-04-01 12:00:47,960 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2023-04-01 12:00:47,961 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2023-04-01 12:00:47,961 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2023-04-01 12:00:47,961 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2023-04-01 12:00:47,961 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2023-04-01 12:00:47,961 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2023-04-01 12:00:47,961 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2023-04-01 12:00:47,961 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2023-04-01 12:00:47,961 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2023-04-01 12:00:47,961 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2023-04-01 12:00:47,961 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2023-04-01 12:00:47,961 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2023-04-01 12:00:47,961 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2023-04-01 12:00:47,962 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2023-04-01 12:00:47,962 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2023-04-01 12:00:47,962 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2023-04-01 12:00:47,962 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2023-04-01 12:00:47,962 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2023-04-01 12:00:47,962 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2023-04-01 12:00:47,962 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 12:00:47,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 12:00:47,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 12:00:47,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 12:00:48,146 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 12:00:48,148 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 12:00:48,615 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 12:00:48,693 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 12:00:48,693 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-04-01 12:00:48,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:00:48 BoogieIcfgContainer [2023-04-01 12:00:48,696 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 12:00:48,697 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 12:00:48,697 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 12:00:48,699 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 12:00:48,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 12:00:47" (1/3) ... [2023-04-01 12:00:48,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57c8e980 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:00:48, skipping insertion in model container [2023-04-01 12:00:48,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:00:47" (2/3) ... [2023-04-01 12:00:48,701 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57c8e980 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:00:48, skipping insertion in model container [2023-04-01 12:00:48,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:00:48" (3/3) ... [2023-04-01 12:00:48,702 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product44.cil.c [2023-04-01 12:00:48,714 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 12:00:48,714 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 12:00:48,749 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 12:00:48,754 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;@7d99c2e9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 12:00:48,755 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 12:00:48,759 INFO L276 IsEmpty]: Start isEmpty. Operand has 144 states, 66 states have (on average 1.2727272727272727) internal successors, (84), 80 states have internal predecessors, (84), 46 states have call successors, (46), 29 states have call predecessors, (46), 29 states have return successors, (46), 43 states have call predecessors, (46), 46 states have call successors, (46) [2023-04-01 12:00:48,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-04-01 12:00:48,766 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:00:48,767 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:00:48,767 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:00:48,771 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:00:48,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1407298610, now seen corresponding path program 1 times [2023-04-01 12:00:48,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:00:48,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832011562] [2023-04-01 12:00:48,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:00:48,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:00:48,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:00:48,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:00:48,944 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:00:48,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832011562] [2023-04-01 12:00:48,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832011562] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:00:48,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:00:48,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-04-01 12:00:48,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449585375] [2023-04-01 12:00:48,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:00:48,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-04-01 12:00:48,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:00:49,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-04-01 12:00:49,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-01 12:00:49,003 INFO L87 Difference]: Start difference. First operand has 144 states, 66 states have (on average 1.2727272727272727) internal successors, (84), 80 states have internal predecessors, (84), 46 states have call successors, (46), 29 states have call predecessors, (46), 29 states have return successors, (46), 43 states have call predecessors, (46), 46 states have call successors, (46) Second operand has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-04-01 12:00:49,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:00:49,064 INFO L93 Difference]: Finished difference Result 221 states and 266 transitions. [2023-04-01 12:00:49,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-04-01 12:00:49,066 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 42 [2023-04-01 12:00:49,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:00:49,078 INFO L225 Difference]: With dead ends: 221 [2023-04-01 12:00:49,078 INFO L226 Difference]: Without dead ends: 111 [2023-04-01 12:00:49,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-01 12:00:49,084 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 12:00:49,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 121 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 12:00:49,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2023-04-01 12:00:49,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2023-04-01 12:00:49,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 57 states have (on average 1.2280701754385965) internal successors, (70), 68 states have internal predecessors, (70), 31 states have call successors, (31), 27 states have call predecessors, (31), 22 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2023-04-01 12:00:49,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 127 transitions. [2023-04-01 12:00:49,116 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 127 transitions. Word has length 42 [2023-04-01 12:00:49,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:00:49,116 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 127 transitions. [2023-04-01 12:00:49,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-04-01 12:00:49,117 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 127 transitions. [2023-04-01 12:00:49,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-04-01 12:00:49,119 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:00:49,119 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:00:49,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 12:00:49,119 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:00:49,120 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:00:49,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1777836760, now seen corresponding path program 1 times [2023-04-01 12:00:49,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:00:49,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845491529] [2023-04-01 12:00:49,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:00:49,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:00:49,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:00:49,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:00:49,234 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:00:49,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845491529] [2023-04-01 12:00:49,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845491529] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:00:49,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:00:49,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 12:00:49,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734250634] [2023-04-01 12:00:49,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:00:49,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 12:00:49,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:00:49,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 12:00:49,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 12:00:49,239 INFO L87 Difference]: Start difference. First operand 111 states and 127 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-04-01 12:00:49,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:00:49,302 INFO L93 Difference]: Finished difference Result 167 states and 190 transitions. [2023-04-01 12:00:49,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 12:00:49,304 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 43 [2023-04-01 12:00:49,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:00:49,306 INFO L225 Difference]: With dead ends: 167 [2023-04-01 12:00:49,306 INFO L226 Difference]: Without dead ends: 103 [2023-04-01 12:00:49,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 12:00:49,308 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 11 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 12:00:49,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 185 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 12:00:49,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2023-04-01 12:00:49,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2023-04-01 12:00:49,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 52 states have (on average 1.2307692307692308) internal successors, (64), 63 states have internal predecessors, (64), 28 states have call successors, (28), 26 states have call predecessors, (28), 22 states have return successors, (24), 21 states have call predecessors, (24), 24 states have call successors, (24) [2023-04-01 12:00:49,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 116 transitions. [2023-04-01 12:00:49,317 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 116 transitions. Word has length 43 [2023-04-01 12:00:49,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:00:49,318 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 116 transitions. [2023-04-01 12:00:49,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-04-01 12:00:49,318 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 116 transitions. [2023-04-01 12:00:49,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-04-01 12:00:49,319 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:00:49,319 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:00:49,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 12:00:49,319 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:00:49,320 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:00:49,320 INFO L85 PathProgramCache]: Analyzing trace with hash 279568738, now seen corresponding path program 1 times [2023-04-01 12:00:49,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:00:49,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520711720] [2023-04-01 12:00:49,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:00:49,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:00:49,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:00:49,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:00:49,543 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:00:49,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520711720] [2023-04-01 12:00:49,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520711720] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:00:49,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:00:49,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 12:00:49,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45989193] [2023-04-01 12:00:49,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:00:49,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 12:00:49,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:00:49,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 12:00:49,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-04-01 12:00:49,547 INFO L87 Difference]: Start difference. First operand 103 states and 116 transitions. Second operand has 7 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 4 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-04-01 12:00:49,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:00:49,825 INFO L93 Difference]: Finished difference Result 310 states and 364 transitions. [2023-04-01 12:00:49,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 12:00:49,826 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 4 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 47 [2023-04-01 12:00:49,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:00:49,835 INFO L225 Difference]: With dead ends: 310 [2023-04-01 12:00:49,835 INFO L226 Difference]: Without dead ends: 229 [2023-04-01 12:00:49,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-04-01 12:00:49,842 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 231 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 12:00:49,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 444 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 12:00:49,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2023-04-01 12:00:49,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 207. [2023-04-01 12:00:49,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 112 states have (on average 1.2589285714285714) internal successors, (141), 131 states have internal predecessors, (141), 51 states have call successors, (51), 47 states have call predecessors, (51), 43 states have return successors, (48), 43 states have call predecessors, (48), 47 states have call successors, (48) [2023-04-01 12:00:49,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 240 transitions. [2023-04-01 12:00:49,863 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 240 transitions. Word has length 47 [2023-04-01 12:00:49,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:00:49,864 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 240 transitions. [2023-04-01 12:00:49,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 4 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-04-01 12:00:49,864 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 240 transitions. [2023-04-01 12:00:49,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-04-01 12:00:49,865 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:00:49,865 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:00:49,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 12:00:49,866 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:00:49,866 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:00:49,866 INFO L85 PathProgramCache]: Analyzing trace with hash -347212016, now seen corresponding path program 1 times [2023-04-01 12:00:49,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:00:49,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622944745] [2023-04-01 12:00:49,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:00:49,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:00:49,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:00:49,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:00:49,987 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:00:49,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622944745] [2023-04-01 12:00:49,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622944745] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:00:49,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:00:49,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 12:00:49,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673581044] [2023-04-01 12:00:49,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:00:49,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-01 12:00:49,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:00:49,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-01 12:00:49,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-01 12:00:49,989 INFO L87 Difference]: Start difference. First operand 207 states and 240 transitions. Second operand has 6 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-04-01 12:00:50,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:00:50,127 INFO L93 Difference]: Finished difference Result 562 states and 669 transitions. [2023-04-01 12:00:50,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-01 12:00:50,127 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 51 [2023-04-01 12:00:50,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:00:50,129 INFO L225 Difference]: With dead ends: 562 [2023-04-01 12:00:50,129 INFO L226 Difference]: Without dead ends: 377 [2023-04-01 12:00:50,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-04-01 12:00:50,131 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 77 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 12:00:50,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 426 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 12:00:50,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2023-04-01 12:00:50,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 365. [2023-04-01 12:00:50,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 202 states have (on average 1.2574257425742574) internal successors, (254), 236 states have internal predecessors, (254), 87 states have call successors, (87), 79 states have call predecessors, (87), 75 states have return successors, (85), 75 states have call predecessors, (85), 83 states have call successors, (85) [2023-04-01 12:00:50,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 426 transitions. [2023-04-01 12:00:50,162 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 426 transitions. Word has length 51 [2023-04-01 12:00:50,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:00:50,165 INFO L495 AbstractCegarLoop]: Abstraction has 365 states and 426 transitions. [2023-04-01 12:00:50,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-04-01 12:00:50,166 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 426 transitions. [2023-04-01 12:00:50,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-04-01 12:00:50,170 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:00:50,170 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:00:50,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 12:00:50,170 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:00:50,171 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:00:50,171 INFO L85 PathProgramCache]: Analyzing trace with hash 990617647, now seen corresponding path program 1 times [2023-04-01 12:00:50,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:00:50,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182337027] [2023-04-01 12:00:50,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:00:50,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:00:50,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:00:50,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:00:50,282 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:00:50,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182337027] [2023-04-01 12:00:50,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182337027] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:00:50,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:00:50,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 12:00:50,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435443654] [2023-04-01 12:00:50,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:00:50,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 12:00:50,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:00:50,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 12:00:50,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-01 12:00:50,284 INFO L87 Difference]: Start difference. First operand 365 states and 426 transitions. Second operand has 7 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 3 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-04-01 12:00:50,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:00:50,578 INFO L93 Difference]: Finished difference Result 965 states and 1218 transitions. [2023-04-01 12:00:50,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-01 12:00:50,579 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 3 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 54 [2023-04-01 12:00:50,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:00:50,583 INFO L225 Difference]: With dead ends: 965 [2023-04-01 12:00:50,584 INFO L226 Difference]: Without dead ends: 622 [2023-04-01 12:00:50,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2023-04-01 12:00:50,587 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 133 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 12:00:50,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 246 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 12:00:50,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2023-04-01 12:00:50,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 545. [2023-04-01 12:00:50,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 310 states have (on average 1.2161290322580645) internal successors, (377), 342 states have internal predecessors, (377), 117 states have call successors, (117), 109 states have call predecessors, (117), 117 states have return successors, (147), 115 states have call predecessors, (147), 113 states have call successors, (147) [2023-04-01 12:00:50,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 641 transitions. [2023-04-01 12:00:50,653 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 641 transitions. Word has length 54 [2023-04-01 12:00:50,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:00:50,653 INFO L495 AbstractCegarLoop]: Abstraction has 545 states and 641 transitions. [2023-04-01 12:00:50,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 3 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-04-01 12:00:50,653 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 641 transitions. [2023-04-01 12:00:50,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-04-01 12:00:50,660 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:00:50,661 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:00:50,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-01 12:00:50,661 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:00:50,661 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:00:50,662 INFO L85 PathProgramCache]: Analyzing trace with hash -985979044, now seen corresponding path program 1 times [2023-04-01 12:00:50,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:00:50,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911447608] [2023-04-01 12:00:50,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:00:50,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:00:50,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:00:50,885 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 12:00:50,885 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:00:50,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911447608] [2023-04-01 12:00:50,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911447608] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 12:00:50,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135568260] [2023-04-01 12:00:50,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:00:50,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 12:00:50,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 12:00:50,901 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 12:00:50,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 12:00:51,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:00:51,006 INFO L262 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 25 conjunts are in the unsatisfiable core [2023-04-01 12:00:51,012 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 12:00:51,099 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:00:51,100 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 12:00:51,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135568260] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:00:51,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 12:00:51,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [14] total 17 [2023-04-01 12:00:51,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258725069] [2023-04-01 12:00:51,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:00:51,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 12:00:51,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:00:51,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 12:00:51,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2023-04-01 12:00:51,101 INFO L87 Difference]: Start difference. First operand 545 states and 641 transitions. Second operand has 11 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 3 states have call successors, (21), 3 states have call predecessors, (21), 6 states have return successors, (15), 6 states have call predecessors, (15), 3 states have call successors, (15) [2023-04-01 12:00:51,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:00:51,370 INFO L93 Difference]: Finished difference Result 1300 states and 1593 transitions. [2023-04-01 12:00:51,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-01 12:00:51,370 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 3 states have call successors, (21), 3 states have call predecessors, (21), 6 states have return successors, (15), 6 states have call predecessors, (15), 3 states have call successors, (15) Word has length 80 [2023-04-01 12:00:51,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:00:51,374 INFO L225 Difference]: With dead ends: 1300 [2023-04-01 12:00:51,374 INFO L226 Difference]: Without dead ends: 777 [2023-04-01 12:00:51,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=447, Unknown=0, NotChecked=0, Total=506 [2023-04-01 12:00:51,376 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 94 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 608 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 12:00:51,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 608 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 12:00:51,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2023-04-01 12:00:51,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 757. [2023-04-01 12:00:51,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 757 states, 438 states have (on average 1.2123287671232876) internal successors, (531), 477 states have internal predecessors, (531), 162 states have call successors, (162), 152 states have call predecessors, (162), 156 states have return successors, (205), 157 states have call predecessors, (205), 158 states have call successors, (205) [2023-04-01 12:00:51,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 757 states to 757 states and 898 transitions. [2023-04-01 12:00:51,424 INFO L78 Accepts]: Start accepts. Automaton has 757 states and 898 transitions. Word has length 80 [2023-04-01 12:00:51,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:00:51,424 INFO L495 AbstractCegarLoop]: Abstraction has 757 states and 898 transitions. [2023-04-01 12:00:51,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 3 states have call successors, (21), 3 states have call predecessors, (21), 6 states have return successors, (15), 6 states have call predecessors, (15), 3 states have call successors, (15) [2023-04-01 12:00:51,425 INFO L276 IsEmpty]: Start isEmpty. Operand 757 states and 898 transitions. [2023-04-01 12:00:51,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-04-01 12:00:51,427 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:00:51,427 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-04-01 12:00:51,434 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-04-01 12:00:51,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-04-01 12:00:51,634 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:00:51,634 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:00:51,634 INFO L85 PathProgramCache]: Analyzing trace with hash 95339568, now seen corresponding path program 1 times [2023-04-01 12:00:51,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:00:51,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383204667] [2023-04-01 12:00:51,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:00:51,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:00:51,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:00:51,948 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-04-01 12:00:51,948 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:00:51,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383204667] [2023-04-01 12:00:51,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383204667] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 12:00:51,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994952793] [2023-04-01 12:00:51,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:00:51,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 12:00:51,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 12:00:51,950 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 12:00:51,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-01 12:00:52,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:00:52,058 INFO L262 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 33 conjunts are in the unsatisfiable core [2023-04-01 12:00:52,061 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 12:00:52,363 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-01 12:00:52,363 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 12:00:52,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994952793] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:00:52,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 12:00:52,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [14] total 26 [2023-04-01 12:00:52,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463750616] [2023-04-01 12:00:52,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:00:52,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-01 12:00:52,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:00:52,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-01 12:00:52,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2023-04-01 12:00:52,365 INFO L87 Difference]: Start difference. First operand 757 states and 898 transitions. Second operand has 14 states, 11 states have (on average 5.818181818181818) internal successors, (64), 11 states have internal predecessors, (64), 6 states have call successors, (27), 5 states have call predecessors, (27), 7 states have return successors, (21), 7 states have call predecessors, (21), 6 states have call successors, (21) [2023-04-01 12:00:53,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:00:53,276 INFO L93 Difference]: Finished difference Result 2190 states and 2728 transitions. [2023-04-01 12:00:53,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-04-01 12:00:53,277 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 5.818181818181818) internal successors, (64), 11 states have internal predecessors, (64), 6 states have call successors, (27), 5 states have call predecessors, (27), 7 states have return successors, (21), 7 states have call predecessors, (21), 6 states have call successors, (21) Word has length 113 [2023-04-01 12:00:53,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:00:53,284 INFO L225 Difference]: With dead ends: 2190 [2023-04-01 12:00:53,284 INFO L226 Difference]: Without dead ends: 1455 [2023-04-01 12:00:53,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 510 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=248, Invalid=1732, Unknown=0, NotChecked=0, Total=1980 [2023-04-01 12:00:53,288 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 180 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 1403 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 1494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-01 12:00:53,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 422 Invalid, 1494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1403 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-01 12:00:53,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1455 states. [2023-04-01 12:00:53,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1455 to 1370. [2023-04-01 12:00:53,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1370 states, 827 states have (on average 1.2200725513905684) internal successors, (1009), 885 states have internal predecessors, (1009), 282 states have call successors, (282), 280 states have call predecessors, (282), 260 states have return successors, (362), 256 states have call predecessors, (362), 278 states have call successors, (362) [2023-04-01 12:00:53,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1370 states to 1370 states and 1653 transitions. [2023-04-01 12:00:53,394 INFO L78 Accepts]: Start accepts. Automaton has 1370 states and 1653 transitions. Word has length 113 [2023-04-01 12:00:53,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:00:53,394 INFO L495 AbstractCegarLoop]: Abstraction has 1370 states and 1653 transitions. [2023-04-01 12:00:53,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 5.818181818181818) internal successors, (64), 11 states have internal predecessors, (64), 6 states have call successors, (27), 5 states have call predecessors, (27), 7 states have return successors, (21), 7 states have call predecessors, (21), 6 states have call successors, (21) [2023-04-01 12:00:53,395 INFO L276 IsEmpty]: Start isEmpty. Operand 1370 states and 1653 transitions. [2023-04-01 12:00:53,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-04-01 12:00:53,402 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:00:53,402 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-04-01 12:00:53,418 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-01 12:00:53,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-04-01 12:00:53,608 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:00:53,609 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:00:53,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1617629217, now seen corresponding path program 1 times [2023-04-01 12:00:53,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:00:53,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782237078] [2023-04-01 12:00:53,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:00:53,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:00:53,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-04-01 12:00:53,635 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-04-01 12:00:53,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-04-01 12:00:53,668 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-04-01 12:00:53,668 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-04-01 12:00:53,669 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-01 12:00:53,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-01 12:00:53,673 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:00:53,675 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-01 12:00:53,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.04 12:00:53 BoogieIcfgContainer [2023-04-01 12:00:53,745 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-01 12:00:53,746 INFO L158 Benchmark]: Toolchain (without parser) took 6256.16ms. Allocated memory was 181.4MB in the beginning and 274.7MB in the end (delta: 93.3MB). Free memory was 141.8MB in the beginning and 181.9MB in the end (delta: -40.1MB). Peak memory consumption was 54.4MB. Max. memory is 8.0GB. [2023-04-01 12:00:53,746 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 181.4MB. Free memory is still 130.2MB. There was no memory consumed. Max. memory is 8.0GB. [2023-04-01 12:00:53,746 INFO L158 Benchmark]: CACSL2BoogieTranslator took 339.11ms. Allocated memory is still 181.4MB. Free memory was 141.8MB in the beginning and 123.2MB in the end (delta: 18.6MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2023-04-01 12:00:53,746 INFO L158 Benchmark]: Boogie Preprocessor took 73.91ms. Allocated memory is still 181.4MB. Free memory was 123.2MB in the beginning and 119.8MB in the end (delta: 3.4MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-04-01 12:00:53,747 INFO L158 Benchmark]: RCFGBuilder took 790.92ms. Allocated memory was 181.4MB in the beginning and 228.6MB in the end (delta: 47.2MB). Free memory was 119.8MB in the beginning and 173.0MB in the end (delta: -53.2MB). Peak memory consumption was 48.6MB. Max. memory is 8.0GB. [2023-04-01 12:00:53,747 INFO L158 Benchmark]: TraceAbstraction took 5048.40ms. Allocated memory was 228.6MB in the beginning and 274.7MB in the end (delta: 46.1MB). Free memory was 172.5MB in the beginning and 181.9MB in the end (delta: -9.4MB). Peak memory consumption was 37.2MB. Max. memory is 8.0GB. [2023-04-01 12:00:53,750 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 181.4MB. Free memory is still 130.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 339.11ms. Allocated memory is still 181.4MB. Free memory was 141.8MB in the beginning and 123.2MB in the end (delta: 18.6MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * Boogie Preprocessor took 73.91ms. Allocated memory is still 181.4MB. Free memory was 123.2MB in the beginning and 119.8MB in the end (delta: 3.4MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 790.92ms. Allocated memory was 181.4MB in the beginning and 228.6MB in the end (delta: 47.2MB). Free memory was 119.8MB in the beginning and 173.0MB in the end (delta: -53.2MB). Peak memory consumption was 48.6MB. Max. memory is 8.0GB. * TraceAbstraction took 5048.40ms. Allocated memory was 228.6MB in the beginning and 274.7MB in the end (delta: 46.1MB). Free memory was 172.5MB in the beginning and 181.9MB in the end (delta: -9.4MB). Peak memory consumption was 37.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 54]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L228] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L508] int pumpRunning = 0; [L509] int systemActive = 1; [L703] int waterLevel = 1; [L704] int methaneLevelCritical = 0; [L861] int cleanupTimeShifts = 4; [L934] int retValue_acc ; [L935] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L939] FCALL select_helpers() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L940] FCALL select_features() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L941] CALL, EXPR valid_product() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L852] int retValue_acc ; [L855] retValue_acc = 1 [L856] return (retValue_acc); [L941] RET, EXPR valid_product() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, valid_product()=1, waterLevel=1] [L941] tmp = valid_product() [L943] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L945] FCALL setup() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L946] CALL runTest() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L928] CALL test() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L432] int splverifierCounter ; [L433] int tmp ; [L434] int tmp___0 ; [L435] int tmp___1 ; [L436] int tmp___2 ; [L439] splverifierCounter = 0 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L441] COND TRUE 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L443] COND TRUE splverifierCounter < 4 [L449] tmp = __VERIFIER_nondet_int() [L451] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L453] CALL waterRise() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L721] COND TRUE waterLevel < 2 [L722] waterLevel = waterLevel + 1 [L453] RET waterRise() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2] [L459] tmp___0 = __VERIFIER_nondet_int() [L461] COND FALSE !(\read(tmp___0)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, waterLevel=2] [L469] tmp___2 = __VERIFIER_nondet_int() [L471] COND FALSE !(\read(tmp___2)) [L477] tmp___1 = __VERIFIER_nondet_int() [L479] COND FALSE !(\read(tmp___1)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=2] [L488] CALL timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L516] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L523] COND TRUE \read(systemActive) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L525] CALL processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L545] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L548] COND TRUE ! pumpRunning VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L550] CALL, EXPR isHighWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L660] int retValue_acc ; [L661] int tmp ; [L662] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L666] CALL, EXPR isHighWaterSensorDry() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L783] int retValue_acc ; [L786] COND FALSE !(waterLevel < 2) [L790] retValue_acc = 0 [L791] return (retValue_acc); [L666] RET, EXPR isHighWaterSensorDry() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterSensorDry()=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L666] tmp = isHighWaterSensorDry() [L668] COND FALSE !(\read(tmp)) [L671] tmp___0 = 1 [L673] retValue_acc = tmp___0 [L674] return (retValue_acc); [L550] RET, EXPR isHighWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterLevel()=1, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L550] tmp = isHighWaterLevel() [L552] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=2] [L554] CALL activatePump() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L579] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L583] CALL, EXPR isMethaneAlarm() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L604] int retValue_acc ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L608] CALL, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L742] int retValue_acc ; [L745] retValue_acc = methaneLevelCritical [L746] return (retValue_acc); [L608] RET, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L608] retValue_acc = isMethaneLevelCritical() [L610] return (retValue_acc); [L583] RET, EXPR isMethaneAlarm() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneAlarm()=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L583] tmp = isMethaneAlarm() [L585] COND FALSE !(\read(tmp)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=0, waterLevel=2] [L589] CALL activatePump__wrappee__highWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L573] pumpRunning = 1 [L589] RET activatePump__wrappee__highWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=2] [L554] RET activatePump() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L525] RET processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L531] CALL __utac_acc__Specification1_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L798] int tmp ; [L799] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L803] CALL, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L742] int retValue_acc ; [L745] retValue_acc = methaneLevelCritical [L746] return (retValue_acc); [L803] RET, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L803] tmp = isMethaneLevelCritical() [L805] COND FALSE !(\read(tmp)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=2] [L531] RET __utac_acc__Specification1_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L488] RET timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=2] [L441] COND TRUE 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=2] [L443] COND TRUE splverifierCounter < 4 [L449] tmp = __VERIFIER_nondet_int() [L451] COND FALSE !(\read(tmp)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=2] [L459] tmp___0 = __VERIFIER_nondet_int() [L461] COND TRUE \read(tmp___0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=1, tmp___1=0, tmp___2=0, waterLevel=2] [L463] CALL changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L733] COND FALSE !(\read(methaneLevelCritical)) [L736] methaneLevelCritical = 1 [L463] RET changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=1, tmp___1=0, tmp___2=0, waterLevel=2] [L469] tmp___2 = __VERIFIER_nondet_int() [L471] COND FALSE !(\read(tmp___2)) [L477] tmp___1 = __VERIFIER_nondet_int() [L479] COND FALSE !(\read(tmp___1)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=1, tmp___1=0, tmp___2=0, waterLevel=2] [L488] CALL timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L516] COND TRUE \read(pumpRunning) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L518] CALL lowerWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L709] COND TRUE waterLevel > 0 [L710] waterLevel = waterLevel - 1 [L518] RET lowerWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L523] COND TRUE \read(systemActive) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L525] CALL processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L545] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L548] COND FALSE !(! pumpRunning) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L563] FCALL processEnvironment__wrappee__base() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L525] RET processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L531] CALL __utac_acc__Specification1_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L798] int tmp ; [L799] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L803] CALL, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L742] int retValue_acc ; [L745] retValue_acc = methaneLevelCritical [L746] return (retValue_acc); [L803] RET, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L803] tmp = isMethaneLevelCritical() [L805] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=1] [L807] CALL, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L615] int retValue_acc ; [L618] retValue_acc = pumpRunning [L619] return (retValue_acc); [L807] RET, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isPumpRunning()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=1] [L807] tmp___0 = isPumpRunning() [L809] COND TRUE \read(tmp___0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=1] [L811] CALL __automaton_fail() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L54] reach_error() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 41 procedures, 185 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.9s, OverallIterations: 8, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 769 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 726 mSDsluCounter, 2452 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1806 mSDsCounter, 242 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2583 IncrementalHoareTripleChecker+Invalid, 2825 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 242 mSolverCounterUnsat, 646 mSDtfsCounter, 2583 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 304 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 571 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1370occurred in iteration=7, InterpolantAutomatonStates: 71, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 7 MinimizatonAttempts, 216 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 739 NumberOfCodeBlocks, 739 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 614 ConstructedInterpolants, 0 QuantifiedInterpolants, 1304 SizeOfPredicates, 15 NumberOfNonLiveVariables, 803 ConjunctsInSsa, 58 ConjunctsInUnsatCore, 9 InterpolantComputations, 7 PerfectInterpolantSequences, 55/58 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-04-01 12:00:53,791 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...