/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain IntervalDomain -i ../sv-benchmarks/c/product-lines/minepump_spec3_product52.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 23:55:00,919 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 23:55:00,920 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 23:55:00,942 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 23:55:00,942 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 23:55:00,943 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 23:55:00,944 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 23:55:00,945 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 23:55:00,946 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 23:55:00,947 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 23:55:00,947 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 23:55:00,948 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 23:55:00,948 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 23:55:00,949 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 23:55:00,949 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 23:55:00,950 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 23:55:00,950 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 23:55:00,951 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 23:55:00,952 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 23:55:00,953 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 23:55:00,953 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 23:55:00,954 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 23:55:00,955 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 23:55:00,955 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 23:55:00,957 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-03-31 23:55:00,957 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-03-31 23:55:00,957 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-03-31 23:55:00,958 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-03-31 23:55:00,958 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-03-31 23:55:00,958 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-03-31 23:55:00,958 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-31 23:55:00,959 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-31 23:55:00,959 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-31 23:55:00,960 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-31 23:55:00,960 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-31 23:55:00,960 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-31 23:55:00,961 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-31 23:55:00,961 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-31 23:55:00,961 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 23:55:00,962 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 23:55:00,962 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 23:55:00,963 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-03-31 23:55:00,976 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 23:55:00,976 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 23:55:00,977 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 23:55:00,977 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 23:55:00,977 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 23:55:00,977 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 23:55:00,977 INFO L138 SettingsManager]: * User list type=DISABLED [2023-03-31 23:55:00,978 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-03-31 23:55:00,978 INFO L138 SettingsManager]: * Explicit value domain=true [2023-03-31 23:55:00,978 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-03-31 23:55:00,978 INFO L138 SettingsManager]: * Octagon Domain=false [2023-03-31 23:55:00,978 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-03-31 23:55:00,978 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-03-31 23:55:00,978 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-03-31 23:55:00,978 INFO L138 SettingsManager]: * Interval Domain=false [2023-03-31 23:55:00,978 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-03-31 23:55:00,978 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-03-31 23:55:00,978 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-03-31 23:55:00,979 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 23:55:00,979 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 23:55:00,979 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 23:55:00,979 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 23:55:00,979 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 23:55:00,979 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 23:55:00,979 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 23:55:00,979 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 23:55:00,979 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 23:55:00,980 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 23:55:00,980 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 23:55:00,980 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 23:55:00,980 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 23:55:00,980 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 23:55:00,980 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 23:55:00,980 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 23:55:00,980 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-03-31 23:55:00,980 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 23:55:00,980 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 23:55:00,980 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-03-31 23:55:00,981 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 23:55:00,981 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 23:55:00,981 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-03-31 23:55:00,981 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> IntervalDomain [2023-03-31 23:55:01,160 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 23:55:01,178 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 23:55:01,180 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 23:55:01,181 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 23:55:01,182 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 23:55:01,183 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec3_product52.cil.c [2023-03-31 23:55:02,219 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 23:55:02,399 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 23:55:02,399 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product52.cil.c [2023-03-31 23:55:02,407 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f5e88e00/abbf0bd968c94babbcb0cf4637599e2f/FLAG8e99529b0 [2023-03-31 23:55:02,421 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f5e88e00/abbf0bd968c94babbcb0cf4637599e2f [2023-03-31 23:55:02,423 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 23:55:02,424 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 23:55:02,425 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 23:55:02,425 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 23:55:02,427 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 23:55:02,427 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 11:55:02" (1/1) ... [2023-03-31 23:55:02,428 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35d72687 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:55:02, skipping insertion in model container [2023-03-31 23:55:02,428 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 11:55:02" (1/1) ... [2023-03-31 23:55:02,432 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 23:55:02,470 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 23:55:02,693 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_spec3_product52.cil.c[17256,17269] [2023-03-31 23:55:02,700 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 23:55:02,708 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 23:55:02,744 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_spec3_product52.cil.c[17256,17269] [2023-03-31 23:55:02,747 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 23:55:02,758 INFO L208 MainTranslator]: Completed translation [2023-03-31 23:55:02,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:55:02 WrapperNode [2023-03-31 23:55:02,759 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 23:55:02,760 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 23:55:02,760 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 23:55:02,760 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 23:55:02,774 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:55:02" (1/1) ... [2023-03-31 23:55:02,774 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:55:02" (1/1) ... [2023-03-31 23:55:02,788 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:55:02" (1/1) ... [2023-03-31 23:55:02,789 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:55:02" (1/1) ... [2023-03-31 23:55:02,803 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:55:02" (1/1) ... [2023-03-31 23:55:02,807 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:55:02" (1/1) ... [2023-03-31 23:55:02,817 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:55:02" (1/1) ... [2023-03-31 23:55:02,819 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:55:02" (1/1) ... [2023-03-31 23:55:02,822 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 23:55:02,823 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 23:55:02,823 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 23:55:02,823 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 23:55:02,833 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:55:02" (1/1) ... [2023-03-31 23:55:02,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 23:55:02,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 23:55:02,856 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-03-31 23:55:02,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-03-31 23:55:02,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 23:55:02,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 23:55:02,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2023-03-31 23:55:02,883 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 23:55:02,883 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2023-03-31 23:55:02,883 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2023-03-31 23:55:02,883 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2023-03-31 23:55:02,884 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2023-03-31 23:55:02,884 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2023-03-31 23:55:02,884 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2023-03-31 23:55:02,884 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2023-03-31 23:55:02,884 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2023-03-31 23:55:02,884 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2023-03-31 23:55:02,884 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2023-03-31 23:55:02,884 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2023-03-31 23:55:02,884 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2023-03-31 23:55:02,884 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2023-03-31 23:55:02,884 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2023-03-31 23:55:02,885 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2023-03-31 23:55:02,885 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-03-31 23:55:02,885 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2023-03-31 23:55:02,885 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2023-03-31 23:55:02,885 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2023-03-31 23:55:02,885 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2023-03-31 23:55:02,885 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2023-03-31 23:55:02,885 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2023-03-31 23:55:02,885 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2023-03-31 23:55:02,885 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2023-03-31 23:55:02,885 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2023-03-31 23:55:02,885 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2023-03-31 23:55:02,885 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2023-03-31 23:55:02,886 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2023-03-31 23:55:02,886 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2023-03-31 23:55:02,886 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-03-31 23:55:02,886 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2023-03-31 23:55:02,886 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2023-03-31 23:55:02,886 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2023-03-31 23:55:02,886 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2023-03-31 23:55:02,886 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-03-31 23:55:02,886 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2023-03-31 23:55:02,886 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2023-03-31 23:55:02,886 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2023-03-31 23:55:02,887 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 23:55:02,887 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 23:55:02,888 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 23:55:02,888 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 23:55:02,888 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 23:55:02,888 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-03-31 23:55:02,889 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2023-03-31 23:55:02,889 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-03-31 23:55:02,889 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2023-03-31 23:55:02,889 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2023-03-31 23:55:02,889 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2023-03-31 23:55:02,889 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2023-03-31 23:55:02,890 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2023-03-31 23:55:02,890 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2023-03-31 23:55:02,890 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2023-03-31 23:55:02,890 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2023-03-31 23:55:02,890 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2023-03-31 23:55:02,890 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2023-03-31 23:55:02,890 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-03-31 23:55:02,891 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-03-31 23:55:02,891 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2023-03-31 23:55:02,891 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-03-31 23:55:02,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-03-31 23:55:02,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 23:55:02,891 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-03-31 23:55:02,891 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2023-03-31 23:55:02,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 23:55:02,891 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2023-03-31 23:55:02,891 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2023-03-31 23:55:02,891 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 23:55:02,891 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2023-03-31 23:55:02,891 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2023-03-31 23:55:02,892 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2023-03-31 23:55:02,892 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-03-31 23:55:02,892 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2023-03-31 23:55:02,892 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2023-03-31 23:55:02,892 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2023-03-31 23:55:02,892 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2023-03-31 23:55:02,893 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2023-03-31 23:55:02,893 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2023-03-31 23:55:02,893 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2023-03-31 23:55:02,893 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2023-03-31 23:55:02,893 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2023-03-31 23:55:02,894 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2023-03-31 23:55:02,894 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2023-03-31 23:55:02,894 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-03-31 23:55:02,894 INFO L130 BoogieDeclarations]: Found specification of procedure test [2023-03-31 23:55:02,894 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2023-03-31 23:55:02,894 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2023-03-31 23:55:02,894 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2023-03-31 23:55:02,895 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2023-03-31 23:55:02,895 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2023-03-31 23:55:02,895 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2023-03-31 23:55:02,895 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2023-03-31 23:55:02,895 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 23:55:02,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 23:55:02,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 23:55:02,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 23:55:03,059 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 23:55:03,061 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 23:55:03,566 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 23:55:03,693 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 23:55:03,693 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-03-31 23:55:03,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 11:55:03 BoogieIcfgContainer [2023-03-31 23:55:03,695 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 23:55:03,696 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 23:55:03,696 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 23:55:03,699 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 23:55:03,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 11:55:02" (1/3) ... [2023-03-31 23:55:03,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dea4a7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 11:55:03, skipping insertion in model container [2023-03-31 23:55:03,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:55:02" (2/3) ... [2023-03-31 23:55:03,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dea4a7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 11:55:03, skipping insertion in model container [2023-03-31 23:55:03,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 11:55:03" (3/3) ... [2023-03-31 23:55:03,700 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product52.cil.c [2023-03-31 23:55:03,712 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 23:55:03,713 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 23:55:03,744 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 23:55:03,749 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;@1e35e270, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-03-31 23:55:03,750 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 23:55:03,754 INFO L276 IsEmpty]: Start isEmpty. Operand has 156 states, 72 states have (on average 1.2777777777777777) internal successors, (92), 87 states have internal predecessors, (92), 49 states have call successors, (49), 31 states have call predecessors, (49), 31 states have return successors, (49), 44 states have call predecessors, (49), 49 states have call successors, (49) [2023-03-31 23:55:03,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-03-31 23:55:03,766 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:55:03,771 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:55:03,772 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:55:03,775 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:55:03,775 INFO L85 PathProgramCache]: Analyzing trace with hash 319095318, now seen corresponding path program 1 times [2023-03-31 23:55:03,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:55:03,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794402980] [2023-03-31 23:55:03,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:55:03,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:55:03,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:55:03,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 23:55:03,970 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:55:03,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794402980] [2023-03-31 23:55:03,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794402980] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:55:03,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 23:55:03,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-03-31 23:55:03,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140812167] [2023-03-31 23:55:03,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:55:03,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-03-31 23:55:03,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:55:04,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-03-31 23:55:04,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-03-31 23:55:04,003 INFO L87 Difference]: Start difference. First operand has 156 states, 72 states have (on average 1.2777777777777777) internal successors, (92), 87 states have internal predecessors, (92), 49 states have call successors, (49), 31 states have call predecessors, (49), 31 states have return successors, (49), 44 states have call predecessors, (49), 49 states have call successors, (49) Second operand has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-03-31 23:55:04,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:55:04,081 INFO L93 Difference]: Finished difference Result 241 states and 292 transitions. [2023-03-31 23:55:04,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-03-31 23:55:04,083 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 47 [2023-03-31 23:55:04,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:55:04,090 INFO L225 Difference]: With dead ends: 241 [2023-03-31 23:55:04,090 INFO L226 Difference]: Without dead ends: 121 [2023-03-31 23:55:04,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-03-31 23:55:04,099 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-31 23:55:04,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 132 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 23:55:04,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2023-03-31 23:55:04,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2023-03-31 23:55:04,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 62 states have (on average 1.2419354838709677) internal successors, (77), 74 states have internal predecessors, (77), 34 states have call successors, (34), 29 states have call predecessors, (34), 24 states have return successors, (29), 24 states have call predecessors, (29), 29 states have call successors, (29) [2023-03-31 23:55:04,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 140 transitions. [2023-03-31 23:55:04,141 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 140 transitions. Word has length 47 [2023-03-31 23:55:04,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:55:04,142 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 140 transitions. [2023-03-31 23:55:04,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-03-31 23:55:04,143 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 140 transitions. [2023-03-31 23:55:04,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-03-31 23:55:04,150 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:55:04,151 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] [2023-03-31 23:55:04,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 23:55:04,151 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:55:04,151 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:55:04,152 INFO L85 PathProgramCache]: Analyzing trace with hash -2054106439, now seen corresponding path program 1 times [2023-03-31 23:55:04,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:55:04,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75687025] [2023-03-31 23:55:04,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:55:04,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:55:04,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:55:04,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 23:55:04,270 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:55:04,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75687025] [2023-03-31 23:55:04,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75687025] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:55:04,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 23:55:04,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-03-31 23:55:04,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009587938] [2023-03-31 23:55:04,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:55:04,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-31 23:55:04,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:55:04,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-31 23:55:04,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-31 23:55:04,272 INFO L87 Difference]: Start difference. First operand 121 states and 140 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-03-31 23:55:04,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:55:04,313 INFO L93 Difference]: Finished difference Result 189 states and 217 transitions. [2023-03-31 23:55:04,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-31 23:55:04,314 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 48 [2023-03-31 23:55:04,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:55:04,315 INFO L225 Difference]: With dead ends: 189 [2023-03-31 23:55:04,315 INFO L226 Difference]: Without dead ends: 113 [2023-03-31 23:55:04,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-31 23:55:04,316 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 11 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-31 23:55:04,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 207 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 23:55:04,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2023-03-31 23:55:04,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2023-03-31 23:55:04,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 57 states have (on average 1.2456140350877194) internal successors, (71), 69 states have internal predecessors, (71), 31 states have call successors, (31), 28 states have call predecessors, (31), 24 states have return successors, (27), 22 states have call predecessors, (27), 27 states have call successors, (27) [2023-03-31 23:55:04,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 129 transitions. [2023-03-31 23:55:04,324 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 129 transitions. Word has length 48 [2023-03-31 23:55:04,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:55:04,324 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 129 transitions. [2023-03-31 23:55:04,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-03-31 23:55:04,325 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 129 transitions. [2023-03-31 23:55:04,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-03-31 23:55:04,327 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:55:04,327 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] [2023-03-31 23:55:04,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-31 23:55:04,328 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:55:04,328 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:55:04,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1970766566, now seen corresponding path program 1 times [2023-03-31 23:55:04,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:55:04,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364650436] [2023-03-31 23:55:04,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:55:04,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:55:04,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:55:04,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 23:55:04,525 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:55:04,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364650436] [2023-03-31 23:55:04,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364650436] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:55:04,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 23:55:04,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-03-31 23:55:04,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980386887] [2023-03-31 23:55:04,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:55:04,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-03-31 23:55:04,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:55:04,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-03-31 23:55:04,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-03-31 23:55:04,527 INFO L87 Difference]: Start difference. First operand 113 states and 129 transitions. Second operand has 7 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 4 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-03-31 23:55:04,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:55:04,822 INFO L93 Difference]: Finished difference Result 345 states and 409 transitions. [2023-03-31 23:55:04,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 23:55:04,822 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), 4 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 52 [2023-03-31 23:55:04,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:55:04,831 INFO L225 Difference]: With dead ends: 345 [2023-03-31 23:55:04,831 INFO L226 Difference]: Without dead ends: 254 [2023-03-31 23:55:04,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-03-31 23:55:04,837 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 208 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-03-31 23:55:04,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 559 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-03-31 23:55:04,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2023-03-31 23:55:04,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 242. [2023-03-31 23:55:04,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 129 states have (on average 1.2790697674418605) internal successors, (165), 152 states have internal predecessors, (165), 62 states have call successors, (62), 56 states have call predecessors, (62), 50 states have return successors, (59), 46 states have call predecessors, (59), 58 states have call successors, (59) [2023-03-31 23:55:04,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 286 transitions. [2023-03-31 23:55:04,877 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 286 transitions. Word has length 52 [2023-03-31 23:55:04,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:55:04,879 INFO L495 AbstractCegarLoop]: Abstraction has 242 states and 286 transitions. [2023-03-31 23:55:04,879 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), 4 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-03-31 23:55:04,879 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 286 transitions. [2023-03-31 23:55:04,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-03-31 23:55:04,882 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:55:04,882 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:55:04,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-03-31 23:55:04,882 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:55:04,883 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:55:04,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1971227924, now seen corresponding path program 1 times [2023-03-31 23:55:04,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:55:04,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011258878] [2023-03-31 23:55:04,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:55:04,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:55:04,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:55:05,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 23:55:05,052 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:55:05,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011258878] [2023-03-31 23:55:05,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011258878] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:55:05,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 23:55:05,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-03-31 23:55:05,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215377349] [2023-03-31 23:55:05,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:55:05,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 23:55:05,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:55:05,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 23:55:05,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 23:55:05,054 INFO L87 Difference]: Start difference. First operand 242 states and 286 transitions. Second operand has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-03-31 23:55:05,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:55:05,205 INFO L93 Difference]: Finished difference Result 670 states and 817 transitions. [2023-03-31 23:55:05,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-03-31 23:55:05,206 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 56 [2023-03-31 23:55:05,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:55:05,211 INFO L225 Difference]: With dead ends: 670 [2023-03-31 23:55:05,211 INFO L226 Difference]: Without dead ends: 450 [2023-03-31 23:55:05,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-03-31 23:55:05,220 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 87 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 23:55:05,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 485 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 23:55:05,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2023-03-31 23:55:05,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 426. [2023-03-31 23:55:05,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 233 states have (on average 1.2832618025751072) internal successors, (299), 272 states have internal predecessors, (299), 106 states have call successors, (106), 94 states have call predecessors, (106), 86 states have return successors, (108), 78 states have call predecessors, (108), 102 states have call successors, (108) [2023-03-31 23:55:05,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 513 transitions. [2023-03-31 23:55:05,263 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 513 transitions. Word has length 56 [2023-03-31 23:55:05,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:55:05,263 INFO L495 AbstractCegarLoop]: Abstraction has 426 states and 513 transitions. [2023-03-31 23:55:05,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-03-31 23:55:05,263 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 513 transitions. [2023-03-31 23:55:05,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-03-31 23:55:05,265 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:55:05,265 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:55:05,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-03-31 23:55:05,265 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:55:05,265 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:55:05,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1197394387, now seen corresponding path program 1 times [2023-03-31 23:55:05,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:55:05,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968610126] [2023-03-31 23:55:05,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:55:05,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:55:05,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-03-31 23:55:05,283 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-03-31 23:55:05,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-03-31 23:55:05,320 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-03-31 23:55:05,320 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-03-31 23:55:05,320 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-03-31 23:55:05,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-03-31 23:55:05,324 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-03-31 23:55:05,326 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-03-31 23:55:05,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.03 11:55:05 BoogieIcfgContainer [2023-03-31 23:55:05,356 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-03-31 23:55:05,356 INFO L158 Benchmark]: Toolchain (without parser) took 2932.20ms. Allocated memory is still 220.2MB. Free memory was 170.4MB in the beginning and 90.5MB in the end (delta: 79.9MB). Peak memory consumption was 80.4MB. Max. memory is 8.0GB. [2023-03-31 23:55:05,356 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 181.4MB. Free memory was 126.5MB in the beginning and 126.3MB in the end (delta: 161.0kB). There was no memory consumed. Max. memory is 8.0GB. [2023-03-31 23:55:05,356 INFO L158 Benchmark]: CACSL2BoogieTranslator took 334.63ms. Allocated memory is still 220.2MB. Free memory was 169.9MB in the beginning and 151.5MB in the end (delta: 18.4MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2023-03-31 23:55:05,357 INFO L158 Benchmark]: Boogie Preprocessor took 62.74ms. Allocated memory is still 220.2MB. Free memory was 151.5MB in the beginning and 147.9MB in the end (delta: 3.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-03-31 23:55:05,357 INFO L158 Benchmark]: RCFGBuilder took 872.04ms. Allocated memory is still 220.2MB. Free memory was 147.9MB in the beginning and 170.0MB in the end (delta: -22.1MB). Peak memory consumption was 54.5MB. Max. memory is 8.0GB. [2023-03-31 23:55:05,358 INFO L158 Benchmark]: TraceAbstraction took 1659.25ms. Allocated memory is still 220.2MB. Free memory was 169.4MB in the beginning and 90.5MB in the end (delta: 78.9MB). Peak memory consumption was 78.4MB. Max. memory is 8.0GB. [2023-03-31 23:55:05,359 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 181.4MB. Free memory was 126.5MB in the beginning and 126.3MB in the end (delta: 161.0kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 334.63ms. Allocated memory is still 220.2MB. Free memory was 169.9MB in the beginning and 151.5MB in the end (delta: 18.4MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * Boogie Preprocessor took 62.74ms. Allocated memory is still 220.2MB. Free memory was 151.5MB in the beginning and 147.9MB in the end (delta: 3.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 872.04ms. Allocated memory is still 220.2MB. Free memory was 147.9MB in the beginning and 170.0MB in the end (delta: -22.1MB). Peak memory consumption was 54.5MB. Max. memory is 8.0GB. * TraceAbstraction took 1659.25ms. Allocated memory is still 220.2MB. Free memory was 169.4MB in the beginning and 90.5MB in the end (delta: 78.9MB). Peak memory consumption was 78.4MB. 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: 863]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L94] int waterLevel = 1; [L95] int methaneLevelCritical = 0; [L366] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L569] int pumpRunning = 0; [L570] int systemActive = 1; [L906] int cleanupTimeShifts = 4; [L979] int retValue_acc ; [L980] 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] [L984] 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] [L985] 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] [L986] 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] [L897] int retValue_acc ; [L900] retValue_acc = 1 [L901] return (retValue_acc); [L986] 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] [L986] tmp = valid_product() [L988] 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] [L990] 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] [L991] 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] [L973] 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] [L791] int splverifierCounter ; [L792] int tmp ; [L793] int tmp___0 ; [L794] int tmp___1 ; [L795] int tmp___2 ; [L798] 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] [L800] 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] [L802] COND TRUE splverifierCounter < 4 [L808] tmp = __VERIFIER_nondet_int() [L810] 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] [L812] 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] [L112] COND TRUE waterLevel < 2 [L113] waterLevel = waterLevel + 1 [L812] 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] [L818] tmp___0 = __VERIFIER_nondet_int() [L820] 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] [L828] tmp___2 = __VERIFIER_nondet_int() [L830] COND FALSE !(\read(tmp___2)) [L836] tmp___1 = __VERIFIER_nondet_int() [L838] COND TRUE \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=1, tmp___2=0, waterLevel=2] [L840] CALL stopSystem() 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=2] [L769] COND FALSE !(\read(pumpRunning)) 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=2] [L776] systemActive = 0 [L840] RET stopSystem() 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=0, tmp=1, tmp___0=0, tmp___1=1, tmp___2=0, waterLevel=2] [L847] 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=0, waterLevel=2] [L576] 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=0, waterLevel=2] [L583] COND FALSE !(\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=0, waterLevel=2] [L591] CALL __utac_acc__Specification3_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L55] int tmp ; [L56] int tmp___0 ; [L57] int tmp___1 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L61] 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=0, waterLevel=2] [L133] int retValue_acc ; [L136] retValue_acc = methaneLevelCritical [L137] return (retValue_acc); [L61] 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=0, waterLevel=2] [L61] tmp = isMethaneLevelCritical() [L63] 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=0, tmp=0, waterLevel=2] [L67] CALL, EXPR getWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L165] int retValue_acc ; [L168] retValue_acc = waterLevel [L169] return (retValue_acc); [L67] RET, EXPR getWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, getWaterLevel()=2, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, tmp=0, waterLevel=2] [L67] tmp___0 = getWaterLevel() [L69] COND TRUE tmp___0 == 2 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, tmp=0, tmp___0=2, waterLevel=2] [L71] CALL, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L683] int retValue_acc ; [L686] retValue_acc = pumpRunning [L687] return (retValue_acc); [L71] RET, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isPumpRunning()=0, methaneLevelCritical=0, pumpRunning=0, systemActive=0, tmp=0, tmp___0=2, waterLevel=2] [L71] tmp___1 = isPumpRunning() [L73] COND FALSE !(\read(tmp___1)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, tmp=0, tmp___0=2, tmp___1=0, waterLevel=2] [L77] CALL __automaton_fail() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L863] reach_error() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 43 procedures, 197 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.6s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 313 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 306 mSDsluCounter, 1383 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 895 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 483 IncrementalHoareTripleChecker+Invalid, 491 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 488 mSDtfsCounter, 483 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=426occurred in iteration=4, InterpolantAutomatonStates: 20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 36 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 262 NumberOfCodeBlocks, 262 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 199 ConstructedInterpolants, 0 QuantifiedInterpolants, 364 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 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! [2023-03-31 23:55:05,373 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...