/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_spec4_product30.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 12:05:14,742 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 12:05:14,744 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 12:05:14,775 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 12:05:14,775 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 12:05:14,777 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 12:05:14,781 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 12:05:14,783 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 12:05:14,784 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 12:05:14,788 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 12:05:14,789 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 12:05:14,790 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 12:05:14,790 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 12:05:14,792 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 12:05:14,793 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 12:05:14,794 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 12:05:14,794 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 12:05:14,795 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 12:05:14,797 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 12:05:14,799 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 12:05:14,799 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 12:05:14,801 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 12:05:14,801 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 12:05:14,802 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 12:05:14,808 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 12:05:14,809 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 12:05:14,809 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 12:05:14,810 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 12:05:14,810 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 12:05:14,810 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 12:05:14,811 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 12:05:14,811 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 12:05:14,812 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 12:05:14,813 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 12:05:14,813 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 12:05:14,813 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 12:05:14,814 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 12:05:14,814 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 12:05:14,814 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 12:05:14,814 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 12:05:14,815 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 12:05:14,816 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 12:05:14,838 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 12:05:14,839 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 12:05:14,839 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 12:05:14,839 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 12:05:14,840 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 12:05:14,840 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 12:05:14,840 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 12:05:14,840 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 12:05:14,840 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 12:05:14,840 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 12:05:14,841 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 12:05:14,841 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 12:05:14,841 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 12:05:14,841 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 12:05:14,841 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 12:05:14,841 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 12:05:14,841 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 12:05:14,841 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 12:05:14,842 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 12:05:14,842 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 12:05:14,842 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 12:05:14,842 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 12:05:14,842 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 12:05:14,842 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 12:05:14,842 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 12:05:14,843 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 12:05:14,843 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 12:05:14,843 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 12:05:14,843 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 12:05:14,843 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 12:05:14,843 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 12:05:14,843 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 12:05:14,843 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 12:05:14,843 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 12:05:14,843 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 12:05:14,844 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 12:05:14,844 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 12:05:14,844 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 12:05:14,844 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 12:05:14,844 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 12:05:14,844 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 12:05:14,844 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> EqDomain [2023-04-01 12:05:15,043 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 12:05:15,071 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 12:05:15,073 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 12:05:15,073 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 12:05:15,074 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 12:05:15,075 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec4_product30.cil.c [2023-04-01 12:05:16,072 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 12:05:16,319 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 12:05:16,319 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec4_product30.cil.c [2023-04-01 12:05:16,345 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6351a11c6/6cc041976b224382826e65f4579082dc/FLAG78d762dc8 [2023-04-01 12:05:16,358 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6351a11c6/6cc041976b224382826e65f4579082dc [2023-04-01 12:05:16,360 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 12:05:16,361 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 12:05:16,361 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 12:05:16,362 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 12:05:16,366 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 12:05:16,367 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:05:16" (1/1) ... [2023-04-01 12:05:16,368 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b27d097 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:05:16, skipping insertion in model container [2023-04-01 12:05:16,368 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:05:16" (1/1) ... [2023-04-01 12:05:16,373 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 12:05:16,412 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 12:05:16,632 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec4_product30.cil.c[18223,18236] [2023-04-01 12:05:16,636 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 12:05:16,645 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 12:05:16,731 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec4_product30.cil.c[18223,18236] [2023-04-01 12:05:16,731 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 12:05:16,757 INFO L208 MainTranslator]: Completed translation [2023-04-01 12:05:16,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:05:16 WrapperNode [2023-04-01 12:05:16,757 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 12:05:16,758 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 12:05:16,758 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 12:05:16,758 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 12:05:16,766 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:05:16" (1/1) ... [2023-04-01 12:05:16,766 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:05:16" (1/1) ... [2023-04-01 12:05:16,774 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:05:16" (1/1) ... [2023-04-01 12:05:16,774 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:05:16" (1/1) ... [2023-04-01 12:05:16,787 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:05:16" (1/1) ... [2023-04-01 12:05:16,791 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:05:16" (1/1) ... [2023-04-01 12:05:16,794 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:05:16" (1/1) ... [2023-04-01 12:05:16,795 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:05:16" (1/1) ... [2023-04-01 12:05:16,799 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 12:05:16,800 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 12:05:16,800 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 12:05:16,800 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 12:05:16,800 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:05:16" (1/1) ... [2023-04-01 12:05:16,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 12:05:16,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 12:05:16,844 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 12:05:16,896 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 12:05:16,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 12:05:16,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 12:05:16,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2023-04-01 12:05:16,915 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 12:05:16,915 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2023-04-01 12:05:16,915 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2023-04-01 12:05:16,915 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2023-04-01 12:05:16,915 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2023-04-01 12:05:16,916 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2023-04-01 12:05:16,916 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2023-04-01 12:05:16,916 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2023-04-01 12:05:16,916 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2023-04-01 12:05:16,916 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-04-01 12:05:16,916 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2023-04-01 12:05:16,916 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2023-04-01 12:05:16,916 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2023-04-01 12:05:16,916 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2023-04-01 12:05:16,916 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2023-04-01 12:05:16,916 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2023-04-01 12:05:16,916 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2023-04-01 12:05:16,917 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2023-04-01 12:05:16,917 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2023-04-01 12:05:16,917 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2023-04-01 12:05:16,917 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2023-04-01 12:05:16,917 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2023-04-01 12:05:16,917 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2023-04-01 12:05:16,917 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2023-04-01 12:05:16,917 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2023-04-01 12:05:16,917 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2023-04-01 12:05:16,917 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2023-04-01 12:05:16,917 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2023-04-01 12:05:16,917 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-04-01 12:05:16,917 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2023-04-01 12:05:16,917 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2023-04-01 12:05:16,918 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2023-04-01 12:05:16,918 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 12:05:16,918 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2023-04-01 12:05:16,918 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2023-04-01 12:05:16,918 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2023-04-01 12:05:16,918 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2023-04-01 12:05:16,918 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-04-01 12:05:16,918 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 12:05:16,918 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 12:05:16,918 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 12:05:16,918 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 12:05:16,918 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 12:05:16,918 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2023-04-01 12:05:16,918 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2023-04-01 12:05:16,919 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2023-04-01 12:05:16,919 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2023-04-01 12:05:16,919 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2023-04-01 12:05:16,919 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2023-04-01 12:05:16,919 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2023-04-01 12:05:16,919 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2023-04-01 12:05:16,919 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-04-01 12:05:16,919 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2023-04-01 12:05:16,919 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2023-04-01 12:05:16,919 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-04-01 12:05:16,919 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2023-04-01 12:05:16,919 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2023-04-01 12:05:16,920 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2023-04-01 12:05:16,920 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2023-04-01 12:05:16,920 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2023-04-01 12:05:16,920 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2023-04-01 12:05:16,920 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2023-04-01 12:05:16,920 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2023-04-01 12:05:16,920 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2023-04-01 12:05:16,920 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2023-04-01 12:05:16,920 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-04-01 12:05:16,920 INFO L130 BoogieDeclarations]: Found specification of procedure test [2023-04-01 12:05:16,920 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-01 12:05:16,920 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-01 12:05:16,920 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2023-04-01 12:05:16,920 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-01 12:05:16,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-01 12:05:16,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 12:05:16,921 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-01 12:05:16,921 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2023-04-01 12:05:16,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 12:05:16,921 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2023-04-01 12:05:16,921 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2023-04-01 12:05:16,921 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 12:05:16,921 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2023-04-01 12:05:16,921 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2023-04-01 12:05:16,921 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2023-04-01 12:05:16,921 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2023-04-01 12:05:16,921 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2023-04-01 12:05:16,921 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2023-04-01 12:05:16,921 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2023-04-01 12:05:16,922 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2023-04-01 12:05:16,922 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2023-04-01 12:05:16,922 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 12:05:16,922 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2023-04-01 12:05:16,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 12:05:16,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 12:05:16,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 12:05:17,100 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 12:05:17,102 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 12:05:17,696 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 12:05:17,778 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 12:05:17,779 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-04-01 12:05:17,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:05:17 BoogieIcfgContainer [2023-04-01 12:05:17,781 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 12:05:17,782 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 12:05:17,782 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 12:05:17,784 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 12:05:17,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 12:05:16" (1/3) ... [2023-04-01 12:05:17,785 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e90bd0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:05:17, skipping insertion in model container [2023-04-01 12:05:17,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:05:16" (2/3) ... [2023-04-01 12:05:17,785 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e90bd0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:05:17, skipping insertion in model container [2023-04-01 12:05:17,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:05:17" (3/3) ... [2023-04-01 12:05:17,786 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product30.cil.c [2023-04-01 12:05:17,796 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 12:05:17,796 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 12:05:17,835 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 12:05:17,839 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;@34d20c08, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 12:05:17,839 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 12:05:17,842 INFO L276 IsEmpty]: Start isEmpty. Operand has 148 states, 68 states have (on average 1.2647058823529411) internal successors, (86), 82 states have internal predecessors, (86), 47 states have call successors, (47), 29 states have call predecessors, (47), 29 states have return successors, (47), 43 states have call predecessors, (47), 47 states have call successors, (47) [2023-04-01 12:05:17,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-04-01 12:05:17,848 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:05:17,849 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 12:05:17,850 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:05:17,856 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:05:17,857 INFO L85 PathProgramCache]: Analyzing trace with hash -435918951, now seen corresponding path program 1 times [2023-04-01 12:05:17,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:05:17,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254191436] [2023-04-01 12:05:17,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:05:17,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:05:17,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:05:18,049 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 12:05:18,050 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:05:18,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254191436] [2023-04-01 12:05:18,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254191436] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:05:18,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:05:18,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-04-01 12:05:18,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013041643] [2023-04-01 12:05:18,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:05:18,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-04-01 12:05:18,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:05:18,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-04-01 12:05:18,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-01 12:05:18,091 INFO L87 Difference]: Start difference. First operand has 148 states, 68 states have (on average 1.2647058823529411) internal successors, (86), 82 states have internal predecessors, (86), 47 states have call successors, (47), 29 states have call predecessors, (47), 29 states have return successors, (47), 43 states have call predecessors, (47), 47 states have call successors, (47) 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 12:05:18,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:05:18,169 INFO L93 Difference]: Finished difference Result 215 states and 260 transitions. [2023-04-01 12:05:18,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-04-01 12:05:18,172 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 12:05:18,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:05:18,178 INFO L225 Difference]: With dead ends: 215 [2023-04-01 12:05:18,178 INFO L226 Difference]: Without dead ends: 108 [2023-04-01 12:05:18,180 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 12:05:18,182 INFO L413 NwaCegarLoop]: 118 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, 118 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 12:05:18,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 118 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 12:05:18,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2023-04-01 12:05:18,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2023-04-01 12:05:18,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 55 states have (on average 1.2181818181818183) internal successors, (67), 65 states have internal predecessors, (67), 31 states have call successors, (31), 26 states have call predecessors, (31), 21 states have return successors, (26), 22 states have call predecessors, (26), 26 states have call successors, (26) [2023-04-01 12:05:18,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 124 transitions. [2023-04-01 12:05:18,229 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 124 transitions. Word has length 42 [2023-04-01 12:05:18,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:05:18,230 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 124 transitions. [2023-04-01 12:05:18,230 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 12:05:18,230 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 124 transitions. [2023-04-01 12:05:18,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-04-01 12:05:18,232 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:05:18,232 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 12:05:18,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 12:05:18,232 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:05:18,232 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:05:18,233 INFO L85 PathProgramCache]: Analyzing trace with hash 332923208, now seen corresponding path program 1 times [2023-04-01 12:05:18,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:05:18,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399287409] [2023-04-01 12:05:18,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:05:18,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:05:18,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:05:18,326 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 12:05:18,326 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:05:18,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399287409] [2023-04-01 12:05:18,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399287409] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:05:18,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:05:18,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 12:05:18,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003589563] [2023-04-01 12:05:18,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:05:18,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 12:05:18,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:05:18,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 12:05:18,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 12:05:18,329 INFO L87 Difference]: Start difference. First operand 108 states and 124 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 12:05:18,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:05:18,374 INFO L93 Difference]: Finished difference Result 169 states and 194 transitions. [2023-04-01 12:05:18,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 12:05:18,374 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 12:05:18,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:05:18,376 INFO L225 Difference]: With dead ends: 169 [2023-04-01 12:05:18,376 INFO L226 Difference]: Without dead ends: 100 [2023-04-01 12:05:18,376 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 12:05:18,380 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 9 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 12:05:18,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 183 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 12:05:18,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2023-04-01 12:05:18,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2023-04-01 12:05:18,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 50 states have (on average 1.22) internal successors, (61), 60 states have internal predecessors, (61), 28 states have call successors, (28), 25 states have call predecessors, (28), 21 states have return successors, (24), 20 states have call predecessors, (24), 24 states have call successors, (24) [2023-04-01 12:05:18,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 113 transitions. [2023-04-01 12:05:18,387 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 113 transitions. Word has length 43 [2023-04-01 12:05:18,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:05:18,388 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 113 transitions. [2023-04-01 12:05:18,388 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 12:05:18,388 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 113 transitions. [2023-04-01 12:05:18,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-04-01 12:05:18,389 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:05:18,389 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:05:18,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 12:05:18,389 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:05:18,390 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:05:18,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1299110777, now seen corresponding path program 1 times [2023-04-01 12:05:18,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:05:18,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399183786] [2023-04-01 12:05:18,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:05:18,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:05:18,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:05:18,519 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 12:05:18,520 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:05:18,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399183786] [2023-04-01 12:05:18,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399183786] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:05:18,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:05:18,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 12:05:18,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242689632] [2023-04-01 12:05:18,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:05:18,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 12:05:18,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:05:18,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 12:05:18,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-04-01 12:05:18,521 INFO L87 Difference]: Start difference. First operand 100 states and 113 transitions. Second operand has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 4 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-04-01 12:05:18,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:05:18,694 INFO L93 Difference]: Finished difference Result 178 states and 205 transitions. [2023-04-01 12:05:18,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-01 12:05:18,694 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 4 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 46 [2023-04-01 12:05:18,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:05:18,698 INFO L225 Difference]: With dead ends: 178 [2023-04-01 12:05:18,698 INFO L226 Difference]: Without dead ends: 100 [2023-04-01 12:05:18,704 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 12:05:18,706 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 102 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 12:05:18,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 272 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 12:05:18,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2023-04-01 12:05:18,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2023-04-01 12:05:18,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 50 states have (on average 1.2) internal successors, (60), 59 states have internal predecessors, (60), 28 states have call successors, (28), 25 states have call predecessors, (28), 21 states have return successors, (24), 20 states have call predecessors, (24), 24 states have call successors, (24) [2023-04-01 12:05:18,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 112 transitions. [2023-04-01 12:05:18,724 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 112 transitions. Word has length 46 [2023-04-01 12:05:18,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:05:18,725 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 112 transitions. [2023-04-01 12:05:18,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 4 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-04-01 12:05:18,725 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 112 transitions. [2023-04-01 12:05:18,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-04-01 12:05:18,726 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:05:18,726 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] [2023-04-01 12:05:18,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 12:05:18,726 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:05:18,727 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:05:18,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1313978881, now seen corresponding path program 1 times [2023-04-01 12:05:18,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:05:18,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777498019] [2023-04-01 12:05:18,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:05:18,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:05:18,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:05:18,915 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 12:05:18,915 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:05:18,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777498019] [2023-04-01 12:05:18,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777498019] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:05:18,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:05:18,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-01 12:05:18,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181255048] [2023-04-01 12:05:18,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:05:18,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-01 12:05:18,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:05:18,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-01 12:05:18,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-04-01 12:05:18,917 INFO L87 Difference]: Start difference. First operand 100 states and 112 transitions. Second operand has 10 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 4 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) [2023-04-01 12:05:19,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:05:19,153 INFO L93 Difference]: Finished difference Result 317 states and 374 transitions. [2023-04-01 12:05:19,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 12:05:19,154 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 4 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) Word has length 59 [2023-04-01 12:05:19,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:05:19,159 INFO L225 Difference]: With dead ends: 317 [2023-04-01 12:05:19,159 INFO L226 Difference]: Without dead ends: 239 [2023-04-01 12:05:19,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2023-04-01 12:05:19,160 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 194 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 610 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 12:05:19,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 610 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 12:05:19,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2023-04-01 12:05:19,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 231. [2023-04-01 12:05:19,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 121 states have (on average 1.2148760330578512) internal successors, (147), 143 states have internal predecessors, (147), 61 states have call successors, (61), 52 states have call predecessors, (61), 48 states have return successors, (59), 45 states have call predecessors, (59), 57 states have call successors, (59) [2023-04-01 12:05:19,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 267 transitions. [2023-04-01 12:05:19,179 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 267 transitions. Word has length 59 [2023-04-01 12:05:19,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:05:19,179 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 267 transitions. [2023-04-01 12:05:19,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 4 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) [2023-04-01 12:05:19,179 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 267 transitions. [2023-04-01 12:05:19,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-04-01 12:05:19,181 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:05:19,181 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:05:19,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 12:05:19,182 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:05:19,182 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:05:19,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1124312419, now seen corresponding path program 1 times [2023-04-01 12:05:19,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:05:19,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406382195] [2023-04-01 12:05:19,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:05:19,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:05:19,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:05:19,239 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 12:05:19,240 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:05:19,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406382195] [2023-04-01 12:05:19,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406382195] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:05:19,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:05:19,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 12:05:19,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801548696] [2023-04-01 12:05:19,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:05:19,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 12:05:19,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:05:19,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 12:05:19,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 12:05:19,241 INFO L87 Difference]: Start difference. First operand 231 states and 267 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-04-01 12:05:19,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:05:19,263 INFO L93 Difference]: Finished difference Result 365 states and 431 transitions. [2023-04-01 12:05:19,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 12:05:19,264 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 62 [2023-04-01 12:05:19,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:05:19,266 INFO L225 Difference]: With dead ends: 365 [2023-04-01 12:05:19,266 INFO L226 Difference]: Without dead ends: 156 [2023-04-01 12:05:19,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 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 12:05:19,268 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 55 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 12:05:19,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 66 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 12:05:19,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2023-04-01 12:05:19,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2023-04-01 12:05:19,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 87 states have (on average 1.1264367816091954) internal successors, (98), 96 states have internal predecessors, (98), 36 states have call successors, (36), 36 states have call predecessors, (36), 32 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-04-01 12:05:19,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 166 transitions. [2023-04-01 12:05:19,290 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 166 transitions. Word has length 62 [2023-04-01 12:05:19,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:05:19,291 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 166 transitions. [2023-04-01 12:05:19,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-04-01 12:05:19,291 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 166 transitions. [2023-04-01 12:05:19,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-04-01 12:05:19,297 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:05:19,297 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:05:19,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-01 12:05:19,297 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:05:19,298 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:05:19,298 INFO L85 PathProgramCache]: Analyzing trace with hash -403610009, now seen corresponding path program 1 times [2023-04-01 12:05:19,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:05:19,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91439246] [2023-04-01 12:05:19,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:05:19,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:05:19,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:05:19,546 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-04-01 12:05:19,547 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:05:19,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91439246] [2023-04-01 12:05:19,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91439246] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 12:05:19,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678285142] [2023-04-01 12:05:19,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:05:19,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 12:05:19,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 12:05:19,575 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 12:05:19,580 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 12:05:19,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:05:19,709 INFO L262 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 51 conjunts are in the unsatisfiable core [2023-04-01 12:05:19,715 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 12:05:19,972 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 16 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-04-01 12:05:19,972 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 12:05:20,478 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-04-01 12:05:20,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [678285142] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 12:05:20,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [746031717] [2023-04-01 12:05:20,512 INFO L159 IcfgInterpreter]: Started Sifa with 67 locations of interest [2023-04-01 12:05:20,512 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 12:05:20,515 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 12:05:20,523 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 12:05:20,523 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 12:05:20,883 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 28 for LOIs [2023-04-01 12:05:20,911 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 127 for LOIs [2023-04-01 12:05:22,089 INFO L197 IcfgInterpreter]: Interpreting procedure runTest with input of size 127 for LOIs [2023-04-01 12:05:22,121 INFO L197 IcfgInterpreter]: Interpreting procedure setup with input of size 119 for LOIs [2023-04-01 12:05:22,149 INFO L197 IcfgInterpreter]: Interpreting procedure select_features with input of size 119 for LOIs [2023-04-01 12:05:22,163 INFO L197 IcfgInterpreter]: Interpreting procedure test with input of size 127 for LOIs [2023-04-01 12:05:23,786 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 132 for LOIs [2023-04-01 12:05:23,807 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 122 for LOIs [2023-04-01 12:05:24,297 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification4_spec__1 with input of size 117 for LOIs [2023-04-01 12:05:24,635 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 119 for LOIs [2023-04-01 12:05:24,651 INFO L197 IcfgInterpreter]: Interpreting procedure getWaterLevel with input of size 117 for LOIs [2023-04-01 12:05:24,664 INFO L197 IcfgInterpreter]: Interpreting procedure valid_product with input of size 119 for LOIs [2023-04-01 12:05:24,681 INFO L197 IcfgInterpreter]: Interpreting procedure select_helpers with input of size 119 for LOIs [2023-04-01 12:05:24,693 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment with input of size 119 for LOIs [2023-04-01 12:05:24,870 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__methaneQuery with input of size 119 for LOIs [2023-04-01 12:05:25,008 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 117 for LOIs [2023-04-01 12:05:25,019 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-01 12:05:31,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [746031717] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:05:31,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-04-01 12:05:31,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [7, 14, 12] total 58 [2023-04-01 12:05:31,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786181196] [2023-04-01 12:05:31,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:05:31,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-04-01 12:05:31,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:05:31,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-04-01 12:05:31,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=405, Invalid=2901, Unknown=0, NotChecked=0, Total=3306 [2023-04-01 12:05:31,875 INFO L87 Difference]: Start difference. First operand 156 states and 166 transitions. Second operand has 32 states, 23 states have (on average 1.608695652173913) internal successors, (37), 24 states have internal predecessors, (37), 11 states have call successors, (17), 9 states have call predecessors, (17), 10 states have return successors, (13), 11 states have call predecessors, (13), 9 states have call successors, (13) [2023-04-01 12:05:38,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:05:38,210 INFO L93 Difference]: Finished difference Result 356 states and 399 transitions. [2023-04-01 12:05:38,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-04-01 12:05:38,210 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 23 states have (on average 1.608695652173913) internal successors, (37), 24 states have internal predecessors, (37), 11 states have call successors, (17), 9 states have call predecessors, (17), 10 states have return successors, (13), 11 states have call predecessors, (13), 9 states have call successors, (13) Word has length 99 [2023-04-01 12:05:38,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:05:38,212 INFO L225 Difference]: With dead ends: 356 [2023-04-01 12:05:38,212 INFO L226 Difference]: Without dead ends: 305 [2023-04-01 12:05:38,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1606 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=927, Invalid=5235, Unknown=0, NotChecked=0, Total=6162 [2023-04-01 12:05:38,214 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 324 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 1552 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 1800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 1552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-04-01 12:05:38,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 66 Invalid, 1800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 1552 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-04-01 12:05:38,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2023-04-01 12:05:38,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 273. [2023-04-01 12:05:38,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 158 states have (on average 1.1265822784810127) internal successors, (178), 172 states have internal predecessors, (178), 59 states have call successors, (59), 59 states have call predecessors, (59), 55 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2023-04-01 12:05:38,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 292 transitions. [2023-04-01 12:05:38,258 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 292 transitions. Word has length 99 [2023-04-01 12:05:38,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:05:38,258 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 292 transitions. [2023-04-01 12:05:38,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 23 states have (on average 1.608695652173913) internal successors, (37), 24 states have internal predecessors, (37), 11 states have call successors, (17), 9 states have call predecessors, (17), 10 states have return successors, (13), 11 states have call predecessors, (13), 9 states have call successors, (13) [2023-04-01 12:05:38,258 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 292 transitions. [2023-04-01 12:05:38,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-04-01 12:05:38,259 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:05:38,259 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:05:38,267 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-01 12:05:38,465 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 12:05:38,465 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:05:38,465 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:05:38,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1735738261, now seen corresponding path program 1 times [2023-04-01 12:05:38,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:05:38,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22356228] [2023-04-01 12:05:38,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:05:38,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:05:38,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:05:38,701 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-04-01 12:05:38,701 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:05:38,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22356228] [2023-04-01 12:05:38,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22356228] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 12:05:38,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911995866] [2023-04-01 12:05:38,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:05:38,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 12:05:38,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 12:05:38,721 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 12:05:38,789 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 12:05:38,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:05:38,885 INFO L262 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 51 conjunts are in the unsatisfiable core [2023-04-01 12:05:38,894 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 12:05:39,070 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 16 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-04-01 12:05:39,070 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 12:05:39,455 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-04-01 12:05:39,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [911995866] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 12:05:39,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [159142623] [2023-04-01 12:05:39,457 INFO L159 IcfgInterpreter]: Started Sifa with 70 locations of interest [2023-04-01 12:05:39,457 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 12:05:39,457 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 12:05:39,457 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 12:05:39,457 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 12:05:39,600 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 28 for LOIs [2023-04-01 12:05:39,616 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 127 for LOIs [2023-04-01 12:05:40,429 INFO L197 IcfgInterpreter]: Interpreting procedure runTest with input of size 127 for LOIs [2023-04-01 12:05:40,469 INFO L197 IcfgInterpreter]: Interpreting procedure setup with input of size 119 for LOIs [2023-04-01 12:05:40,481 INFO L197 IcfgInterpreter]: Interpreting procedure select_features with input of size 119 for LOIs [2023-04-01 12:05:40,493 INFO L197 IcfgInterpreter]: Interpreting procedure test with input of size 127 for LOIs [2023-04-01 12:05:44,511 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 169 for LOIs [2023-04-01 12:05:44,539 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 159 for LOIs [2023-04-01 12:05:45,127 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification4_spec__1 with input of size 154 for LOIs [2023-04-01 12:05:45,595 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 156 for LOIs [2023-04-01 12:05:45,619 INFO L197 IcfgInterpreter]: Interpreting procedure getWaterLevel with input of size 154 for LOIs [2023-04-01 12:05:45,637 INFO L197 IcfgInterpreter]: Interpreting procedure changeMethaneLevel with input of size 160 for LOIs [2023-04-01 12:05:45,696 INFO L197 IcfgInterpreter]: Interpreting procedure valid_product with input of size 119 for LOIs [2023-04-01 12:05:45,712 INFO L197 IcfgInterpreter]: Interpreting procedure select_helpers with input of size 119 for LOIs [2023-04-01 12:05:45,724 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment with input of size 156 for LOIs [2023-04-01 12:05:45,990 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__methaneQuery with input of size 156 for LOIs [2023-04-01 12:05:46,195 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 154 for LOIs [2023-04-01 12:05:46,212 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-01 12:05:57,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [159142623] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:05:57,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-04-01 12:05:57,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [7, 14, 12] total 60 [2023-04-01 12:05:57,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61765340] [2023-04-01 12:05:57,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:05:57,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-04-01 12:05:57,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:05:57,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-04-01 12:05:57,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=413, Invalid=3127, Unknown=0, NotChecked=0, Total=3540 [2023-04-01 12:05:57,200 INFO L87 Difference]: Start difference. First operand 273 states and 292 transitions. Second operand has 34 states, 23 states have (on average 1.6956521739130435) internal successors, (39), 25 states have internal predecessors, (39), 12 states have call successors, (18), 10 states have call predecessors, (18), 11 states have return successors, (14), 12 states have call predecessors, (14), 10 states have call successors, (14) [2023-04-01 12:06:15,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:06:15,755 INFO L93 Difference]: Finished difference Result 622 states and 776 transitions. [2023-04-01 12:06:15,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2023-04-01 12:06:15,756 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 23 states have (on average 1.6956521739130435) internal successors, (39), 25 states have internal predecessors, (39), 12 states have call successors, (18), 10 states have call predecessors, (18), 11 states have return successors, (14), 12 states have call predecessors, (14), 10 states have call successors, (14) Word has length 102 [2023-04-01 12:06:15,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:06:15,758 INFO L225 Difference]: With dead ends: 622 [2023-04-01 12:06:15,758 INFO L226 Difference]: Without dead ends: 0 [2023-04-01 12:06:15,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 265 SyntacticMatches, 2 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4061 ImplicationChecksByTransitivity, 26.3s TimeCoverageRelationStatistics Valid=1780, Invalid=11792, Unknown=0, NotChecked=0, Total=13572 [2023-04-01 12:06:15,764 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 704 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 3243 mSolverCounterSat, 645 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 705 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 3888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 645 IncrementalHoareTripleChecker+Valid, 3243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-04-01 12:06:15,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [705 Valid, 645 Invalid, 3888 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [645 Valid, 3243 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-04-01 12:06:15,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-04-01 12:06:15,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-04-01 12:06:15,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-04-01 12:06:15,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-04-01 12:06:15,765 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 102 [2023-04-01 12:06:15,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:06:15,765 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-04-01 12:06:15,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 23 states have (on average 1.6956521739130435) internal successors, (39), 25 states have internal predecessors, (39), 12 states have call successors, (18), 10 states have call predecessors, (18), 11 states have return successors, (14), 12 states have call predecessors, (14), 10 states have call successors, (14) [2023-04-01 12:06:15,766 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-04-01 12:06:15,766 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-04-01 12:06:15,768 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-01 12:06:15,774 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-04-01 12:06:15,977 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 12:06:15,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.