/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_spec5_product44.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 12:08:59,953 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 12:08:59,954 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 12:08:59,983 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 12:08:59,984 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 12:08:59,986 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 12:08:59,988 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 12:08:59,990 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 12:08:59,991 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 12:08:59,994 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 12:08:59,995 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 12:08:59,997 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 12:08:59,997 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 12:08:59,999 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 12:08:59,999 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 12:09:00,000 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 12:09:00,001 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 12:09:00,001 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 12:09:00,002 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 12:09:00,006 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 12:09:00,007 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 12:09:00,007 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 12:09:00,008 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 12:09:00,009 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 12:09:00,015 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 12:09:00,015 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 12:09:00,015 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 12:09:00,016 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 12:09:00,016 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 12:09:00,017 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 12:09:00,017 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 12:09:00,017 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 12:09:00,018 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 12:09:00,019 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 12:09:00,019 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 12:09:00,019 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 12:09:00,020 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 12:09:00,020 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 12:09:00,020 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 12:09:00,021 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 12:09:00,021 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 12:09:00,023 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 12:09:00,045 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 12:09:00,046 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 12:09:00,046 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 12:09:00,046 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 12:09:00,047 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 12:09:00,047 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 12:09:00,047 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 12:09:00,047 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 12:09:00,047 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 12:09:00,047 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 12:09:00,048 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 12:09:00,048 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 12:09:00,048 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 12:09:00,048 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 12:09:00,048 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 12:09:00,048 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 12:09:00,048 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 12:09:00,048 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 12:09:00,049 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 12:09:00,049 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 12:09:00,049 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 12:09:00,049 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 12:09:00,049 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 12:09:00,049 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 12:09:00,049 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 12:09:00,049 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 12:09:00,049 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 12:09:00,049 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 12:09:00,050 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 12:09:00,050 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 12:09:00,050 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 12:09:00,050 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 12:09:00,050 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 12:09:00,050 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 12:09:00,050 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 12:09:00,050 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 12:09:00,050 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 12:09:00,050 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 12:09:00,051 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 12:09:00,051 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 12:09:00,051 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 12:09:00,051 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> EqDomain [2023-04-01 12:09:00,218 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 12:09:00,230 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 12:09:00,231 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 12:09:00,232 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 12:09:00,233 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 12:09:00,233 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec5_product44.cil.c [2023-04-01 12:09:01,209 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 12:09:01,438 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 12:09:01,439 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec5_product44.cil.c [2023-04-01 12:09:01,446 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be9787987/95b216be7b884d9b9c16a4d048f92e7b/FLAGa48da849c [2023-04-01 12:09:01,456 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be9787987/95b216be7b884d9b9c16a4d048f92e7b [2023-04-01 12:09:01,458 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 12:09:01,459 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 12:09:01,461 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 12:09:01,461 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 12:09:01,463 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 12:09:01,464 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:09:01" (1/1) ... [2023-04-01 12:09:01,465 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e12e45b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:09:01, skipping insertion in model container [2023-04-01 12:09:01,465 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:09:01" (1/1) ... [2023-04-01 12:09:01,469 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 12:09:01,509 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 12:09:01,729 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_spec5_product44.cil.c[18005,18018] [2023-04-01 12:09:01,735 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 12:09:01,744 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 12:09:01,799 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_spec5_product44.cil.c[18005,18018] [2023-04-01 12:09:01,800 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 12:09:01,812 INFO L208 MainTranslator]: Completed translation [2023-04-01 12:09:01,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:09:01 WrapperNode [2023-04-01 12:09:01,813 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 12:09:01,813 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 12:09:01,813 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 12:09:01,814 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 12:09:01,821 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:09:01" (1/1) ... [2023-04-01 12:09:01,821 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:09:01" (1/1) ... [2023-04-01 12:09:01,840 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:09:01" (1/1) ... [2023-04-01 12:09:01,841 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:09:01" (1/1) ... [2023-04-01 12:09:01,854 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:09:01" (1/1) ... [2023-04-01 12:09:01,858 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:09:01" (1/1) ... [2023-04-01 12:09:01,860 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:09:01" (1/1) ... [2023-04-01 12:09:01,862 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:09:01" (1/1) ... [2023-04-01 12:09:01,865 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 12:09:01,866 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 12:09:01,866 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 12:09:01,866 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 12:09:01,867 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:09:01" (1/1) ... [2023-04-01 12:09:01,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 12:09:01,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 12:09:01,900 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 12:09:01,905 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 12:09:01,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 12:09:01,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 12:09:01,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2023-04-01 12:09:01,934 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 12:09:01,934 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2023-04-01 12:09:01,934 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2023-04-01 12:09:01,935 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2023-04-01 12:09:01,935 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2023-04-01 12:09:01,935 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2023-04-01 12:09:01,935 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2023-04-01 12:09:01,935 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2023-04-01 12:09:01,935 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2023-04-01 12:09:01,935 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2023-04-01 12:09:01,935 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2023-04-01 12:09:01,935 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2023-04-01 12:09:01,935 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2023-04-01 12:09:01,935 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2023-04-01 12:09:01,935 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-04-01 12:09:01,936 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2023-04-01 12:09:01,936 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2023-04-01 12:09:01,936 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2023-04-01 12:09:01,936 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2023-04-01 12:09:01,936 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2023-04-01 12:09:01,936 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2023-04-01 12:09:01,936 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2023-04-01 12:09:01,936 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2023-04-01 12:09:01,936 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2023-04-01 12:09:01,936 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2023-04-01 12:09:01,936 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2023-04-01 12:09:01,936 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2023-04-01 12:09:01,937 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2023-04-01 12:09:01,937 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2023-04-01 12:09:01,937 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2023-04-01 12:09:01,937 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2023-04-01 12:09:01,937 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-04-01 12:09:01,937 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2023-04-01 12:09:01,937 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2023-04-01 12:09:01,937 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2023-04-01 12:09:01,937 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 12:09:01,937 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-04-01 12:09:01,937 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2023-04-01 12:09:01,937 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2023-04-01 12:09:01,938 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2023-04-01 12:09:01,938 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 12:09:01,938 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 12:09:01,938 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 12:09:01,938 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 12:09:01,938 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 12:09:01,938 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2023-04-01 12:09:01,938 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2023-04-01 12:09:01,938 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2023-04-01 12:09:01,938 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2023-04-01 12:09:01,939 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2023-04-01 12:09:01,939 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2023-04-01 12:09:01,939 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2023-04-01 12:09:01,939 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2023-04-01 12:09:01,939 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-01 12:09:01,939 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-01 12:09:01,939 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2023-04-01 12:09:01,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-01 12:09:01,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-01 12:09:01,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 12:09:01,939 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-01 12:09:01,940 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2023-04-01 12:09:01,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 12:09:01,940 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2023-04-01 12:09:01,940 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2023-04-01 12:09:01,940 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 12:09:01,940 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2023-04-01 12:09:01,940 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2023-04-01 12:09:01,940 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2023-04-01 12:09:01,940 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-04-01 12:09:01,940 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2023-04-01 12:09:01,940 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2023-04-01 12:09:01,940 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2023-04-01 12:09:01,941 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2023-04-01 12:09:01,941 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2023-04-01 12:09:01,941 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2023-04-01 12:09:01,941 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2023-04-01 12:09:01,941 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2023-04-01 12:09:01,941 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2023-04-01 12:09:01,941 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2023-04-01 12:09:01,941 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2023-04-01 12:09:01,941 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2023-04-01 12:09:01,941 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2023-04-01 12:09:01,941 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-04-01 12:09:01,941 INFO L130 BoogieDeclarations]: Found specification of procedure test [2023-04-01 12:09:01,941 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2023-04-01 12:09:01,942 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2023-04-01 12:09:01,942 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2023-04-01 12:09:01,942 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2023-04-01 12:09:01,942 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2023-04-01 12:09:01,942 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2023-04-01 12:09:01,942 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2023-04-01 12:09:01,942 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2023-04-01 12:09:01,942 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 12:09:01,942 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-04-01 12:09:01,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 12:09:01,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 12:09:01,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 12:09:02,061 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 12:09:02,063 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 12:09:02,534 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 12:09:02,692 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 12:09:02,692 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-04-01 12:09:02,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:09:02 BoogieIcfgContainer [2023-04-01 12:09:02,695 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 12:09:02,696 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 12:09:02,696 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 12:09:02,699 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 12:09:02,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 12:09:01" (1/3) ... [2023-04-01 12:09:02,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cdff7ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:09:02, skipping insertion in model container [2023-04-01 12:09:02,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:09:01" (2/3) ... [2023-04-01 12:09:02,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cdff7ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:09:02, skipping insertion in model container [2023-04-01 12:09:02,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:09:02" (3/3) ... [2023-04-01 12:09:02,701 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product44.cil.c [2023-04-01 12:09:02,712 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 12:09:02,712 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 12:09:02,761 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 12:09:02,766 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;@3bcccc09, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 12:09:02,767 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 12:09:02,771 INFO L276 IsEmpty]: Start isEmpty. Operand has 154 states, 70 states have (on average 1.2714285714285714) internal successors, (89), 84 states have internal predecessors, (89), 49 states have call successors, (49), 32 states have call predecessors, (49), 32 states have return successors, (49), 46 states have call predecessors, (49), 49 states have call successors, (49) [2023-04-01 12:09:02,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-04-01 12:09:02,781 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:09:02,784 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:09:02,785 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:09:02,790 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:09:02,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1395689575, now seen corresponding path program 1 times [2023-04-01 12:09:02,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:09:02,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783486798] [2023-04-01 12:09:02,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:09:02,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:09:02,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:09:02,990 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-01 12:09:02,991 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:09:02,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783486798] [2023-04-01 12:09:02,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783486798] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:09:02,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:09:02,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-04-01 12:09:02,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137464925] [2023-04-01 12:09:02,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:09:02,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-04-01 12:09:02,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:09:03,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-04-01 12:09:03,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-01 12:09:03,027 INFO L87 Difference]: Start difference. First operand has 154 states, 70 states have (on average 1.2714285714285714) internal successors, (89), 84 states have internal predecessors, (89), 49 states have call successors, (49), 32 states have call predecessors, (49), 32 states have return successors, (49), 46 states have call predecessors, (49), 49 states have call successors, (49) Second operand has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-04-01 12:09:03,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:09:03,097 INFO L93 Difference]: Finished difference Result 238 states and 285 transitions. [2023-04-01 12:09:03,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-04-01 12:09:03,098 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 52 [2023-04-01 12:09:03,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:09:03,106 INFO L225 Difference]: With dead ends: 238 [2023-04-01 12:09:03,106 INFO L226 Difference]: Without dead ends: 121 [2023-04-01 12:09:03,109 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 12:09:03,112 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 12:09:03,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 129 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 12:09:03,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2023-04-01 12:09:03,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2023-04-01 12:09:03,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 61 states have (on average 1.2295081967213115) internal successors, (75), 72 states have internal predecessors, (75), 34 states have call successors, (34), 30 states have call predecessors, (34), 25 states have return successors, (29), 26 states have call predecessors, (29), 29 states have call successors, (29) [2023-04-01 12:09:03,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 138 transitions. [2023-04-01 12:09:03,156 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 138 transitions. Word has length 52 [2023-04-01 12:09:03,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:09:03,156 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 138 transitions. [2023-04-01 12:09:03,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-04-01 12:09:03,157 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 138 transitions. [2023-04-01 12:09:03,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-04-01 12:09:03,161 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:09:03,161 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:09:03,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 12:09:03,161 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:09:03,162 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:09:03,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1801272013, now seen corresponding path program 1 times [2023-04-01 12:09:03,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:09:03,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720733402] [2023-04-01 12:09:03,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:09:03,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:09:03,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:09:03,285 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-01 12:09:03,285 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:09:03,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720733402] [2023-04-01 12:09:03,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720733402] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:09:03,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:09:03,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 12:09:03,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258931168] [2023-04-01 12:09:03,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:09:03,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 12:09:03,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:09:03,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 12:09:03,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 12:09:03,289 INFO L87 Difference]: Start difference. First operand 121 states and 138 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-04-01 12:09:03,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:09:03,339 INFO L93 Difference]: Finished difference Result 184 states and 209 transitions. [2023-04-01 12:09:03,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 12:09:03,339 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 53 [2023-04-01 12:09:03,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:09:03,340 INFO L225 Difference]: With dead ends: 184 [2023-04-01 12:09:03,340 INFO L226 Difference]: Without dead ends: 113 [2023-04-01 12:09:03,341 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 12:09:03,342 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 11 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 12:09:03,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 201 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 12:09:03,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2023-04-01 12:09:03,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2023-04-01 12:09:03,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 56 states have (on average 1.2321428571428572) internal successors, (69), 67 states have internal predecessors, (69), 31 states have call successors, (31), 29 states have call predecessors, (31), 25 states have return successors, (27), 24 states have call predecessors, (27), 27 states have call successors, (27) [2023-04-01 12:09:03,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 127 transitions. [2023-04-01 12:09:03,366 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 127 transitions. Word has length 53 [2023-04-01 12:09:03,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:09:03,367 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 127 transitions. [2023-04-01 12:09:03,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-04-01 12:09:03,367 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 127 transitions. [2023-04-01 12:09:03,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-04-01 12:09:03,371 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:09:03,371 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:09:03,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 12:09:03,372 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:09:03,372 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:09:03,372 INFO L85 PathProgramCache]: Analyzing trace with hash 578921411, now seen corresponding path program 1 times [2023-04-01 12:09:03,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:09:03,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298123306] [2023-04-01 12:09:03,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:09:03,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:09:03,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:09:03,566 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-01 12:09:03,567 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:09:03,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298123306] [2023-04-01 12:09:03,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298123306] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:09:03,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:09:03,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 12:09:03,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399525676] [2023-04-01 12:09:03,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:09:03,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 12:09:03,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:09:03,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 12:09:03,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-04-01 12:09:03,569 INFO L87 Difference]: Start difference. First operand 113 states and 127 transitions. Second operand has 7 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 4 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) [2023-04-01 12:09:03,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:09:03,775 INFO L93 Difference]: Finished difference Result 339 states and 398 transitions. [2023-04-01 12:09:03,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 12:09:03,776 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 4 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) Word has length 57 [2023-04-01 12:09:03,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:09:03,778 INFO L225 Difference]: With dead ends: 339 [2023-04-01 12:09:03,778 INFO L226 Difference]: Without dead ends: 251 [2023-04-01 12:09:03,779 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 12:09:03,779 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 200 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 12:09:03,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 520 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 12:09:03,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2023-04-01 12:09:03,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 229. [2023-04-01 12:09:03,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 121 states have (on average 1.2644628099173554) internal successors, (153), 140 states have internal predecessors, (153), 58 states have call successors, (58), 53 states have call predecessors, (58), 49 states have return successors, (55), 50 states have call predecessors, (55), 54 states have call successors, (55) [2023-04-01 12:09:03,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 266 transitions. [2023-04-01 12:09:03,802 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 266 transitions. Word has length 57 [2023-04-01 12:09:03,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:09:03,802 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 266 transitions. [2023-04-01 12:09:03,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 4 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) [2023-04-01 12:09:03,802 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 266 transitions. [2023-04-01 12:09:03,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-04-01 12:09:03,807 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:09:03,807 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:09:03,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 12:09:03,808 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:09:03,808 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:09:03,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1067965089, now seen corresponding path program 1 times [2023-04-01 12:09:03,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:09:03,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038410150] [2023-04-01 12:09:03,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:09:03,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:09:03,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:09:04,026 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 12:09:04,026 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:09:04,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038410150] [2023-04-01 12:09:04,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038410150] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:09:04,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:09:04,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 12:09:04,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198538660] [2023-04-01 12:09:04,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:09:04,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 12:09:04,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:09:04,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 12:09:04,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-01 12:09:04,028 INFO L87 Difference]: Start difference. First operand 229 states and 266 transitions. Second operand has 7 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 3 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2023-04-01 12:09:04,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:09:04,331 INFO L93 Difference]: Finished difference Result 583 states and 731 transitions. [2023-04-01 12:09:04,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-01 12:09:04,331 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 3 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 61 [2023-04-01 12:09:04,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:09:04,334 INFO L225 Difference]: With dead ends: 583 [2023-04-01 12:09:04,334 INFO L226 Difference]: Without dead ends: 379 [2023-04-01 12:09:04,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2023-04-01 12:09:04,336 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 143 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 12:09:04,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 252 Invalid, 495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 12:09:04,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2023-04-01 12:09:04,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 334. [2023-04-01 12:09:04,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 180 states have (on average 1.2166666666666666) internal successors, (219), 199 states have internal predecessors, (219), 79 states have call successors, (79), 72 states have call predecessors, (79), 74 states have return successors, (92), 76 states have call predecessors, (92), 75 states have call successors, (92) [2023-04-01 12:09:04,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 390 transitions. [2023-04-01 12:09:04,366 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 390 transitions. Word has length 61 [2023-04-01 12:09:04,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:09:04,366 INFO L495 AbstractCegarLoop]: Abstraction has 334 states and 390 transitions. [2023-04-01 12:09:04,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 3 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2023-04-01 12:09:04,366 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 390 transitions. [2023-04-01 12:09:04,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-04-01 12:09:04,367 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:09:04,367 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:09:04,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 12:09:04,368 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:09:04,368 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:09:04,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1712402794, now seen corresponding path program 1 times [2023-04-01 12:09:04,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:09:04,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546254701] [2023-04-01 12:09:04,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:09:04,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:09:04,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:09:04,612 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-01 12:09:04,612 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:09:04,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546254701] [2023-04-01 12:09:04,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546254701] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:09:04,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:09:04,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-01 12:09:04,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35029872] [2023-04-01 12:09:04,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:09:04,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 12:09:04,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:09:04,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 12:09:04,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-04-01 12:09:04,614 INFO L87 Difference]: Start difference. First operand 334 states and 390 transitions. Second operand has 12 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 4 states have call successors, (23), 3 states have call predecessors, (23), 6 states have return successors, (17), 7 states have call predecessors, (17), 4 states have call successors, (17) [2023-04-01 12:09:04,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:09:04,962 INFO L93 Difference]: Finished difference Result 1027 states and 1239 transitions. [2023-04-01 12:09:04,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-01 12:09:04,962 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 4 states have call successors, (23), 3 states have call predecessors, (23), 6 states have return successors, (17), 7 states have call predecessors, (17), 4 states have call successors, (17) Word has length 87 [2023-04-01 12:09:04,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:09:04,966 INFO L225 Difference]: With dead ends: 1027 [2023-04-01 12:09:04,966 INFO L226 Difference]: Without dead ends: 718 [2023-04-01 12:09:04,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2023-04-01 12:09:04,968 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 212 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 698 SdHoareTripleChecker+Invalid, 585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 12:09:04,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 698 Invalid, 585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 12:09:04,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2023-04-01 12:09:05,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 540. [2023-04-01 12:09:05,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 303 states have (on average 1.2277227722772277) internal successors, (372), 330 states have internal predecessors, (372), 123 states have call successors, (123), 113 states have call predecessors, (123), 113 states have return successors, (141), 118 states have call predecessors, (141), 119 states have call successors, (141) [2023-04-01 12:09:05,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 636 transitions. [2023-04-01 12:09:05,012 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 636 transitions. Word has length 87 [2023-04-01 12:09:05,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:09:05,013 INFO L495 AbstractCegarLoop]: Abstraction has 540 states and 636 transitions. [2023-04-01 12:09:05,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 4 states have call successors, (23), 3 states have call predecessors, (23), 6 states have return successors, (17), 7 states have call predecessors, (17), 4 states have call successors, (17) [2023-04-01 12:09:05,013 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 636 transitions. [2023-04-01 12:09:05,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-04-01 12:09:05,014 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:09:05,014 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:09:05,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-01 12:09:05,015 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:09:05,015 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:09:05,015 INFO L85 PathProgramCache]: Analyzing trace with hash 232011679, now seen corresponding path program 1 times [2023-04-01 12:09:05,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:09:05,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154216148] [2023-04-01 12:09:05,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:09:05,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:09:05,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:09:05,201 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-01 12:09:05,202 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:09:05,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154216148] [2023-04-01 12:09:05,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154216148] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:09:05,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:09:05,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 12:09:05,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430661311] [2023-04-01 12:09:05,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:09:05,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 12:09:05,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:09:05,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 12:09:05,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-01 12:09:05,204 INFO L87 Difference]: Start difference. First operand 540 states and 636 transitions. Second operand has 9 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 4 states have call successors, (24), 5 states have call predecessors, (24), 4 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2023-04-01 12:09:05,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:09:05,717 INFO L93 Difference]: Finished difference Result 1638 states and 1994 transitions. [2023-04-01 12:09:05,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 12:09:05,718 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 4 states have call successors, (24), 5 states have call predecessors, (24), 4 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) Word has length 90 [2023-04-01 12:09:05,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:09:05,725 INFO L225 Difference]: With dead ends: 1638 [2023-04-01 12:09:05,725 INFO L226 Difference]: Without dead ends: 1266 [2023-04-01 12:09:05,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2023-04-01 12:09:05,728 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 252 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 693 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-01 12:09:05,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 589 Invalid, 774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 693 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-01 12:09:05,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1266 states. [2023-04-01 12:09:05,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1266 to 1177. [2023-04-01 12:09:05,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1177 states, 657 states have (on average 1.2283105022831051) internal successors, (807), 716 states have internal predecessors, (807), 264 states have call successors, (264), 239 states have call predecessors, (264), 255 states have return successors, (336), 267 states have call predecessors, (336), 260 states have call successors, (336) [2023-04-01 12:09:05,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 1407 transitions. [2023-04-01 12:09:05,819 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 1407 transitions. Word has length 90 [2023-04-01 12:09:05,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:09:05,820 INFO L495 AbstractCegarLoop]: Abstraction has 1177 states and 1407 transitions. [2023-04-01 12:09:05,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 4 states have call successors, (24), 5 states have call predecessors, (24), 4 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2023-04-01 12:09:05,820 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 1407 transitions. [2023-04-01 12:09:05,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-04-01 12:09:05,827 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:09:05,827 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:09:05,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-01 12:09:05,827 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:09:05,828 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:09:05,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1435688920, now seen corresponding path program 1 times [2023-04-01 12:09:05,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:09:05,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043105167] [2023-04-01 12:09:05,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:09:05,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:09:05,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:09:06,026 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 20 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-04-01 12:09:06,027 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:09:06,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043105167] [2023-04-01 12:09:06,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043105167] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 12:09:06,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242533908] [2023-04-01 12:09:06,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:09:06,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 12:09:06,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 12:09:06,057 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 12:09:06,084 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 12:09:06,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:09:06,225 INFO L262 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 8 conjunts are in the unsatisfiable core [2023-04-01 12:09:06,233 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 12:09:06,467 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 22 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:09:06,468 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 12:09:06,762 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 20 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-04-01 12:09:06,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1242533908] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 12:09:06,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1808369995] [2023-04-01 12:09:06,803 INFO L159 IcfgInterpreter]: Started Sifa with 99 locations of interest [2023-04-01 12:09:06,803 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 12:09:06,806 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 12:09:06,810 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 12:09:06,810 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 12:09:07,296 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 31 for LOIs [2023-04-01 12:09:07,335 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 131 for LOIs [2023-04-01 12:09:08,529 INFO L197 IcfgInterpreter]: Interpreting procedure runTest with input of size 131 for LOIs [2023-04-01 12:09:08,780 INFO L197 IcfgInterpreter]: Interpreting procedure test with input of size 131 for LOIs [2023-04-01 12:09:12,212 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 7 [2023-04-01 12:09:13,084 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-04-01 12:09:13,171 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-04-01 12:09:13,258 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 7 [2023-04-01 12:09:13,455 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 129 for LOIs [2023-04-01 12:09:13,565 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 124 for LOIs [2023-04-01 12:09:14,618 INFO L197 IcfgInterpreter]: Interpreting procedure lowerWaterLevel with input of size 123 for LOIs [2023-04-01 12:09:14,636 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment with input of size 128 for LOIs [2023-04-01 12:09:15,526 INFO L197 IcfgInterpreter]: Interpreting procedure isHighWaterLevel with input of size 119 for LOIs [2023-04-01 12:09:15,748 INFO L197 IcfgInterpreter]: Interpreting procedure isHighWaterSensorDry with input of size 119 for LOIs [2023-04-01 12:09:15,769 INFO L197 IcfgInterpreter]: Interpreting procedure activatePump with input of size 131 for LOIs [2023-04-01 12:09:16,149 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneAlarm with input of size 129 for LOIs [2023-04-01 12:09:16,332 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 129 for LOIs [2023-04-01 12:09:16,351 INFO L197 IcfgInterpreter]: Interpreting procedure activatePump__wrappee__highWaterSensor with input of size 121 for LOIs [2023-04-01 12:09:16,363 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 122 for LOIs [2023-04-01 12:09:16,375 INFO L197 IcfgInterpreter]: Interpreting procedure setup with input of size 121 for LOIs [2023-04-01 12:09:16,387 INFO L197 IcfgInterpreter]: Interpreting procedure select_features with input of size 121 for LOIs [2023-04-01 12:09:16,399 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification5_spec__3 with input of size 118 for LOIs [2023-04-01 12:09:16,748 INFO L197 IcfgInterpreter]: Interpreting procedure __automaton_fail with input of size 128 for LOIs [2023-04-01 12:09:16,761 INFO L197 IcfgInterpreter]: Interpreting procedure getWaterLevel with input of size 118 for LOIs [2023-04-01 12:09:16,773 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification5_spec__2 with input of size 118 for LOIs [2023-04-01 12:09:16,955 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 123 for LOIs [2023-04-01 12:09:17,003 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification5_spec__1 with input of size 123 for LOIs [2023-04-01 12:09:17,018 INFO L197 IcfgInterpreter]: Interpreting procedure valid_product with input of size 121 for LOIs [2023-04-01 12:09:17,035 INFO L197 IcfgInterpreter]: Interpreting procedure select_helpers with input of size 121 for LOIs [2023-04-01 12:09:17,047 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-01 12:09:37,784 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '10351#(and (= (select |#length| 15) 25) (= 9 (select |#length| 5)) (= (select |#length| 9) 21) (= 30 (select |#length| 7)) (= 1 (select |#valid| 5)) (= (select |#length| 3) 12) (= (select |#valid| 15) 1) (= (select |#valid| 9) 1) (not (= ~pumpRunning~0 0)) (= (select |#length| 12) 25) (<= ~pumpRunning~0 2147483647) (= (select |#valid| 11) 1) (= ~methaneLevelCritical~0 0) (= 30 (select |#length| 4)) (not (= 2 ~waterLevel~0)) (= 31 (select |#length| 2)) (= ~head~0.offset 0) (= 2 (select |#length| 1)) (= (select |#length| 8) 9) (= (select |#valid| 3) 1) (= (select |#valid| 7) 1) (= 30 (select |#length| 13)) (= 1 ~systemActive~0) (= 30 (select |#length| 10)) (= (select |#valid| 12) 1) (not (= |#StackHeapBarrier| 0)) (= (select |#valid| 4) 1) (= (select |#valid| 1) 1) (= (select |#length| 6) 21) (= (select |#valid| 14) 1) (= 9 (select |#length| 14)) (= (select |#valid| 0) 0) (= ~head~0.base 0) (= (select |#valid| 2) 1) (<= 0 (+ ~pumpRunning~0 2147483648)) (= |#NULL.offset| 0) (= 9 (select |#length| 11)) (= (select (select |#memory_int| 1) 0) 48) (= (select |#valid| 6) 1) (= (select (select |#memory_int| 1) 1) 0) (= ~switchedOnBeforeTS~0 0) (= (select |#valid| 10) 1) (= (select |#valid| 8) 1) (= (select |#valid| 13) 1) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2023-04-01 12:09:37,785 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-01 12:09:37,785 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 12:09:37,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 19 [2023-04-01 12:09:37,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363231296] [2023-04-01 12:09:37,785 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 12:09:37,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-04-01 12:09:37,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:09:37,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-04-01 12:09:37,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=521, Invalid=5799, Unknown=0, NotChecked=0, Total=6320 [2023-04-01 12:09:37,788 INFO L87 Difference]: Start difference. First operand 1177 states and 1407 transitions. Second operand has 19 states, 12 states have (on average 8.916666666666666) internal successors, (107), 15 states have internal predecessors, (107), 7 states have call successors, (48), 6 states have call predecessors, (48), 11 states have return successors, (47), 10 states have call predecessors, (47), 6 states have call successors, (47) [2023-04-01 12:09:38,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:09:38,881 INFO L93 Difference]: Finished difference Result 2550 states and 3173 transitions. [2023-04-01 12:09:38,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-04-01 12:09:38,882 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 12 states have (on average 8.916666666666666) internal successors, (107), 15 states have internal predecessors, (107), 7 states have call successors, (48), 6 states have call predecessors, (48), 11 states have return successors, (47), 10 states have call predecessors, (47), 6 states have call successors, (47) Word has length 129 [2023-04-01 12:09:38,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:09:38,887 INFO L225 Difference]: With dead ends: 2550 [2023-04-01 12:09:38,887 INFO L226 Difference]: Without dead ends: 1541 [2023-04-01 12:09:38,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 314 SyntacticMatches, 11 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4503 ImplicationChecksByTransitivity, 21.3s TimeCoverageRelationStatistics Valid=778, Invalid=9934, Unknown=0, NotChecked=0, Total=10712 [2023-04-01 12:09:38,893 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 346 mSDsluCounter, 1388 mSDsCounter, 0 mSdLazyCounter, 1329 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 1607 SdHoareTripleChecker+Invalid, 1523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 1329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-01 12:09:38,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [354 Valid, 1607 Invalid, 1523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 1329 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-01 12:09:38,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1541 states. [2023-04-01 12:09:38,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1541 to 1310. [2023-04-01 12:09:38,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1310 states, 730 states have (on average 1.2178082191780821) internal successors, (889), 809 states have internal predecessors, (889), 300 states have call successors, (300), 283 states have call predecessors, (300), 279 states have return successors, (338), 273 states have call predecessors, (338), 296 states have call successors, (338) [2023-04-01 12:09:38,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1310 states to 1310 states and 1527 transitions. [2023-04-01 12:09:38,958 INFO L78 Accepts]: Start accepts. Automaton has 1310 states and 1527 transitions. Word has length 129 [2023-04-01 12:09:38,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:09:38,959 INFO L495 AbstractCegarLoop]: Abstraction has 1310 states and 1527 transitions. [2023-04-01 12:09:38,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 12 states have (on average 8.916666666666666) internal successors, (107), 15 states have internal predecessors, (107), 7 states have call successors, (48), 6 states have call predecessors, (48), 11 states have return successors, (47), 10 states have call predecessors, (47), 6 states have call successors, (47) [2023-04-01 12:09:38,959 INFO L276 IsEmpty]: Start isEmpty. Operand 1310 states and 1527 transitions. [2023-04-01 12:09:38,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-04-01 12:09:38,962 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:09:38,962 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:09:38,968 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-04-01 12:09:39,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 12:09:39,163 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:09:39,163 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:09:39,163 INFO L85 PathProgramCache]: Analyzing trace with hash -453074813, now seen corresponding path program 1 times [2023-04-01 12:09:39,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:09:39,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692394135] [2023-04-01 12:09:39,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:09:39,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:09:39,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:09:39,262 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2023-04-01 12:09:39,263 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:09:39,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692394135] [2023-04-01 12:09:39,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692394135] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:09:39,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:09:39,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 12:09:39,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312292682] [2023-04-01 12:09:39,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:09:39,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 12:09:39,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:09:39,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 12:09:39,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 12:09:39,264 INFO L87 Difference]: Start difference. First operand 1310 states and 1527 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2023-04-01 12:09:39,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:09:39,327 INFO L93 Difference]: Finished difference Result 2071 states and 2422 transitions. [2023-04-01 12:09:39,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 12:09:39,328 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 194 [2023-04-01 12:09:39,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:09:39,332 INFO L225 Difference]: With dead ends: 2071 [2023-04-01 12:09:39,332 INFO L226 Difference]: Without dead ends: 814 [2023-04-01 12:09:39,334 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 12:09:39,335 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 43 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 12:09:39,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 241 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 12:09:39,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2023-04-01 12:09:39,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 794. [2023-04-01 12:09:39,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 794 states, 435 states have (on average 1.2045977011494253) internal successors, (524), 489 states have internal predecessors, (524), 188 states have call successors, (188), 178 states have call predecessors, (188), 170 states have return successors, (197), 166 states have call predecessors, (197), 184 states have call successors, (197) [2023-04-01 12:09:39,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 909 transitions. [2023-04-01 12:09:39,372 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 909 transitions. Word has length 194 [2023-04-01 12:09:39,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:09:39,374 INFO L495 AbstractCegarLoop]: Abstraction has 794 states and 909 transitions. [2023-04-01 12:09:39,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2023-04-01 12:09:39,375 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 909 transitions. [2023-04-01 12:09:39,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2023-04-01 12:09:39,377 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:09:39,377 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:09:39,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-01 12:09:39,377 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:09:39,377 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:09:39,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1586344770, now seen corresponding path program 1 times [2023-04-01 12:09:39,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:09:39,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826292058] [2023-04-01 12:09:39,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:09:39,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:09:39,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:09:39,702 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 73 proven. 13 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2023-04-01 12:09:39,702 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:09:39,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826292058] [2023-04-01 12:09:39,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826292058] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 12:09:39,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1881864357] [2023-04-01 12:09:39,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:09:39,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 12:09:39,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 12:09:39,703 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 12:09:39,706 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 12:09:39,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:09:39,867 INFO L262 TraceCheckSpWp]: Trace formula consists of 777 conjuncts, 27 conjunts are in the unsatisfiable core [2023-04-01 12:09:39,872 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 12:09:39,987 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 133 proven. 13 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-04-01 12:09:39,987 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 12:09:40,391 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 77 proven. 10 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2023-04-01 12:09:40,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1881864357] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 12:09:40,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2089283219] [2023-04-01 12:09:40,396 INFO L159 IcfgInterpreter]: Started Sifa with 109 locations of interest [2023-04-01 12:09:40,396 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 12:09:40,397 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 12:09:40,397 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 12:09:40,397 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 12:09:40,568 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 31 for LOIs [2023-04-01 12:09:40,584 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 131 for LOIs [2023-04-01 12:09:41,386 INFO L197 IcfgInterpreter]: Interpreting procedure runTest with input of size 131 for LOIs [2023-04-01 12:09:41,597 INFO L197 IcfgInterpreter]: Interpreting procedure test with input of size 131 for LOIs [2023-04-01 12:09:49,278 INFO L197 IcfgInterpreter]: Interpreting procedure stopSystem with input of size 167 for LOIs [2023-04-01 12:09:49,513 INFO L197 IcfgInterpreter]: Interpreting procedure deactivatePump with input of size 167 for LOIs [2023-04-01 12:09:49,536 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 208 for LOIs [2023-04-01 12:09:49,701 INFO L197 IcfgInterpreter]: Interpreting procedure startSystem with input of size 164 for LOIs [2023-04-01 12:09:49,724 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 161 for LOIs [2023-04-01 12:09:51,575 INFO L197 IcfgInterpreter]: Interpreting procedure lowerWaterLevel with input of size 160 for LOIs [2023-04-01 12:09:51,599 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment with input of size 165 for LOIs [2023-04-01 12:09:52,886 INFO L197 IcfgInterpreter]: Interpreting procedure isHighWaterLevel with input of size 158 for LOIs [2023-04-01 12:09:53,194 INFO L197 IcfgInterpreter]: Interpreting procedure isHighWaterSensorDry with input of size 158 for LOIs [2023-04-01 12:09:53,225 INFO L197 IcfgInterpreter]: Interpreting procedure activatePump with input of size 170 for LOIs [2023-04-01 12:09:53,771 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneAlarm with input of size 168 for LOIs [2023-04-01 12:09:54,032 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 168 for LOIs [2023-04-01 12:09:54,060 INFO L197 IcfgInterpreter]: Interpreting procedure activatePump__wrappee__highWaterSensor with input of size 160 for LOIs [2023-04-01 12:09:54,080 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 161 for LOIs [2023-04-01 12:09:54,098 INFO L197 IcfgInterpreter]: Interpreting procedure setup with input of size 121 for LOIs [2023-04-01 12:09:54,110 INFO L197 IcfgInterpreter]: Interpreting procedure select_features with input of size 121 for LOIs [2023-04-01 12:09:54,122 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification5_spec__3 with input of size 152 for LOIs [2023-04-01 12:09:54,619 INFO L197 IcfgInterpreter]: Interpreting procedure __automaton_fail with input of size 165 for LOIs [2023-04-01 12:09:54,639 INFO L197 IcfgInterpreter]: Interpreting procedure getWaterLevel with input of size 152 for LOIs [2023-04-01 12:09:54,657 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification5_spec__2 with input of size 155 for LOIs [2023-04-01 12:09:54,916 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 157 for LOIs [2023-04-01 12:09:54,997 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification5_spec__1 with input of size 123 for LOIs [2023-04-01 12:09:55,011 INFO L197 IcfgInterpreter]: Interpreting procedure valid_product with input of size 121 for LOIs [2023-04-01 12:09:55,028 INFO L197 IcfgInterpreter]: Interpreting procedure select_helpers with input of size 121 for LOIs [2023-04-01 12:09:55,040 INFO L180 IcfgInterpreter]: Interpretation finished