/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_product47.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 12:09:30,050 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 12:09:30,051 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 12:09:30,088 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 12:09:30,089 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 12:09:30,092 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 12:09:30,095 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 12:09:30,097 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 12:09:30,099 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 12:09:30,104 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 12:09:30,105 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 12:09:30,106 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 12:09:30,106 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 12:09:30,107 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 12:09:30,107 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 12:09:30,108 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 12:09:30,109 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 12:09:30,109 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 12:09:30,110 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 12:09:30,112 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 12:09:30,113 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 12:09:30,120 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 12:09:30,120 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 12:09:30,121 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 12:09:30,124 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 12:09:30,124 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 12:09:30,124 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 12:09:30,125 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 12:09:30,125 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 12:09:30,126 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 12:09:30,126 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 12:09:30,127 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 12:09:30,127 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 12:09:30,128 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 12:09:30,128 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 12:09:30,129 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 12:09:30,129 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 12:09:30,129 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 12:09:30,130 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 12:09:30,130 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 12:09:30,131 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 12:09:30,136 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 12:09:30,170 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 12:09:30,170 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 12:09:30,171 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 12:09:30,171 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 12:09:30,171 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 12:09:30,171 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 12:09:30,172 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 12:09:30,172 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 12:09:30,172 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 12:09:30,172 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 12:09:30,172 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 12:09:30,172 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 12:09:30,172 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 12:09:30,176 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 12:09:30,176 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 12:09:30,176 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 12:09:30,177 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 12:09:30,177 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 12:09:30,177 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 12:09:30,177 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 12:09:30,178 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 12:09:30,178 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 12:09:30,178 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 12:09:30,178 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 12:09:30,178 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 12:09:30,179 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 12:09:30,179 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 12:09:30,179 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 12:09:30,179 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 12:09:30,180 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 12:09:30,180 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 12:09:30,180 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 12:09:30,180 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 12:09:30,180 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 12:09:30,180 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 12:09:30,181 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 12:09:30,181 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 12:09:30,181 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 12:09:30,182 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 12:09:30,182 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 12:09:30,182 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 12:09:30,182 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> EqDomain [2023-04-01 12:09:30,429 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 12:09:30,450 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 12:09:30,453 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 12:09:30,454 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 12:09:30,455 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 12:09:30,456 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec5_product47.cil.c [2023-04-01 12:09:31,640 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 12:09:31,881 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 12:09:31,881 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec5_product47.cil.c [2023-04-01 12:09:31,896 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4046ac2df/d4a02180a730450abb855595e4b6cd0c/FLAG85877a91d [2023-04-01 12:09:31,908 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4046ac2df/d4a02180a730450abb855595e4b6cd0c [2023-04-01 12:09:31,911 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 12:09:31,912 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 12:09:31,913 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 12:09:31,913 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 12:09:31,916 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 12:09:31,917 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:09:31" (1/1) ... [2023-04-01 12:09:31,918 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47079fa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:09:31, skipping insertion in model container [2023-04-01 12:09:31,918 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:09:31" (1/1) ... [2023-04-01 12:09:31,927 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 12:09:31,978 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 12:09:32,084 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_product47.cil.c[1605,1618] [2023-04-01 12:09:32,226 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 12:09:32,246 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 12:09:32,265 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_product47.cil.c[1605,1618] [2023-04-01 12:09:32,322 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 12:09:32,339 INFO L208 MainTranslator]: Completed translation [2023-04-01 12:09:32,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:09:32 WrapperNode [2023-04-01 12:09:32,340 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 12:09:32,341 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 12:09:32,341 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 12:09:32,341 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 12:09:32,352 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:09:32" (1/1) ... [2023-04-01 12:09:32,352 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:09:32" (1/1) ... [2023-04-01 12:09:32,364 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:09:32" (1/1) ... [2023-04-01 12:09:32,364 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:09:32" (1/1) ... [2023-04-01 12:09:32,385 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:09:32" (1/1) ... [2023-04-01 12:09:32,392 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:09:32" (1/1) ... [2023-04-01 12:09:32,395 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:09:32" (1/1) ... [2023-04-01 12:09:32,398 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:09:32" (1/1) ... [2023-04-01 12:09:32,404 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 12:09:32,405 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 12:09:32,405 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 12:09:32,405 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 12:09:32,406 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:09:32" (1/1) ... [2023-04-01 12:09:32,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 12:09:32,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 12:09:32,437 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 12:09:32,438 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 12:09:32,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 12:09:32,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 12:09:32,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2023-04-01 12:09:32,465 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 12:09:32,465 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-04-01 12:09:32,465 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-04-01 12:09:32,466 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2023-04-01 12:09:32,466 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2023-04-01 12:09:32,466 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2023-04-01 12:09:32,466 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2023-04-01 12:09:32,466 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2023-04-01 12:09:32,466 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2023-04-01 12:09:32,466 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2023-04-01 12:09:32,467 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2023-04-01 12:09:32,467 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2023-04-01 12:09:32,467 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2023-04-01 12:09:32,467 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2023-04-01 12:09:32,467 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2023-04-01 12:09:32,467 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-04-01 12:09:32,467 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2023-04-01 12:09:32,467 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2023-04-01 12:09:32,468 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2023-04-01 12:09:32,468 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 12:09:32,468 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2023-04-01 12:09:32,468 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2023-04-01 12:09:32,468 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2023-04-01 12:09:32,468 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2023-04-01 12:09:32,468 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2023-04-01 12:09:32,469 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2023-04-01 12:09:32,469 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2023-04-01 12:09:32,469 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2023-04-01 12:09:32,469 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2023-04-01 12:09:32,469 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2023-04-01 12:09:32,469 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2023-04-01 12:09:32,469 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2023-04-01 12:09:32,469 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2023-04-01 12:09:32,470 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2023-04-01 12:09:32,470 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2023-04-01 12:09:32,470 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2023-04-01 12:09:32,470 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2023-04-01 12:09:32,470 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2023-04-01 12:09:32,470 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2023-04-01 12:09:32,470 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2023-04-01 12:09:32,470 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 12:09:32,471 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 12:09:32,471 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 12:09:32,471 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 12:09:32,471 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 12:09:32,471 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2023-04-01 12:09:32,471 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-04-01 12:09:32,471 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2023-04-01 12:09:32,472 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2023-04-01 12:09:32,472 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2023-04-01 12:09:32,472 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2023-04-01 12:09:32,472 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-04-01 12:09:32,472 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2023-04-01 12:09:32,472 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2023-04-01 12:09:32,472 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2023-04-01 12:09:32,473 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2023-04-01 12:09:32,473 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2023-04-01 12:09:32,473 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2023-04-01 12:09:32,473 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2023-04-01 12:09:32,473 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2023-04-01 12:09:32,473 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2023-04-01 12:09:32,473 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2023-04-01 12:09:32,473 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2023-04-01 12:09:32,474 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2023-04-01 12:09:32,474 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2023-04-01 12:09:32,474 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2023-04-01 12:09:32,474 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2023-04-01 12:09:32,474 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-04-01 12:09:32,474 INFO L130 BoogieDeclarations]: Found specification of procedure test [2023-04-01 12:09:32,474 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2023-04-01 12:09:32,474 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2023-04-01 12:09:32,475 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2023-04-01 12:09:32,475 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2023-04-01 12:09:32,475 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2023-04-01 12:09:32,475 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2023-04-01 12:09:32,475 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2023-04-01 12:09:32,475 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 12:09:32,475 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-01 12:09:32,475 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-01 12:09:32,476 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2023-04-01 12:09:32,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-01 12:09:32,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-01 12:09:32,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 12:09:32,476 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-01 12:09:32,476 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2023-04-01 12:09:32,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 12:09:32,476 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2023-04-01 12:09:32,477 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2023-04-01 12:09:32,477 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 12:09:32,477 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2023-04-01 12:09:32,477 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2023-04-01 12:09:32,477 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2023-04-01 12:09:32,477 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2023-04-01 12:09:32,477 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2023-04-01 12:09:32,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 12:09:32,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 12:09:32,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 12:09:32,633 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 12:09:32,636 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 12:09:33,333 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 12:09:33,418 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 12:09:33,418 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-04-01 12:09:33,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:09:33 BoogieIcfgContainer [2023-04-01 12:09:33,421 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 12:09:33,423 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 12:09:33,423 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 12:09:33,428 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 12:09:33,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 12:09:31" (1/3) ... [2023-04-01 12:09:33,429 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@270c5a9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:09:33, skipping insertion in model container [2023-04-01 12:09:33,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:09:32" (2/3) ... [2023-04-01 12:09:33,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@270c5a9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:09:33, skipping insertion in model container [2023-04-01 12:09:33,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:09:33" (3/3) ... [2023-04-01 12:09:33,431 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product47.cil.c [2023-04-01 12:09:33,446 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 12:09:33,446 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 12:09:33,489 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 12:09:33,495 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;@62fce607, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 12:09:33,496 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 12:09:33,499 INFO L276 IsEmpty]: Start isEmpty. Operand has 161 states, 74 states have (on average 1.2837837837837838) internal successors, (95), 89 states have internal predecessors, (95), 52 states have call successors, (52), 32 states have call predecessors, (52), 32 states have return successors, (52), 48 states have call predecessors, (52), 52 states have call successors, (52) [2023-04-01 12:09:33,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-04-01 12:09:33,508 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:09:33,509 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 12:09:33,509 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:09:33,513 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:09:33,514 INFO L85 PathProgramCache]: Analyzing trace with hash 501516377, now seen corresponding path program 1 times [2023-04-01 12:09:33,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:09:33,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882023757] [2023-04-01 12:09:33,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:09:33,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:09:33,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:09:33,739 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 12:09:33,740 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:09:33,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882023757] [2023-04-01 12:09:33,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882023757] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:09:33,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:09:33,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-04-01 12:09:33,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251566101] [2023-04-01 12:09:33,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:09:33,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-04-01 12:09:33,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:09:33,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-04-01 12:09:33,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-01 12:09:33,774 INFO L87 Difference]: Start difference. First operand has 161 states, 74 states have (on average 1.2837837837837838) internal successors, (95), 89 states have internal predecessors, (95), 52 states have call successors, (52), 32 states have call predecessors, (52), 32 states have return successors, (52), 48 states have call predecessors, (52), 52 states have call successors, (52) 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 12:09:33,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:09:33,894 INFO L93 Difference]: Finished difference Result 252 states and 309 transitions. [2023-04-01 12:09:33,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-04-01 12:09:33,901 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 12:09:33,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:09:33,909 INFO L225 Difference]: With dead ends: 252 [2023-04-01 12:09:33,909 INFO L226 Difference]: Without dead ends: 128 [2023-04-01 12:09:33,915 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 12:09:33,920 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 12:09:33,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 142 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 12:09:33,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2023-04-01 12:09:33,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2023-04-01 12:09:33,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 65 states have (on average 1.2461538461538462) internal successors, (81), 77 states have internal predecessors, (81), 37 states have call successors, (37), 30 states have call predecessors, (37), 25 states have return successors, (32), 28 states have call predecessors, (32), 32 states have call successors, (32) [2023-04-01 12:09:33,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 150 transitions. [2023-04-01 12:09:33,973 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 150 transitions. Word has length 52 [2023-04-01 12:09:33,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:09:33,973 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 150 transitions. [2023-04-01 12:09:33,974 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 12:09:33,974 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 150 transitions. [2023-04-01 12:09:33,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-04-01 12:09:33,977 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:09:33,977 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 12:09:33,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 12:09:33,978 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:09:33,978 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:09:33,978 INFO L85 PathProgramCache]: Analyzing trace with hash 331946099, now seen corresponding path program 1 times [2023-04-01 12:09:33,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:09:33,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708624433] [2023-04-01 12:09:33,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:09:33,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:09:34,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:09:34,165 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 12:09:34,166 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:09:34,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708624433] [2023-04-01 12:09:34,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708624433] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:09:34,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:09:34,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 12:09:34,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234302879] [2023-04-01 12:09:34,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:09:34,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 12:09:34,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:09:34,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 12:09:34,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 12:09:34,168 INFO L87 Difference]: Start difference. First operand 128 states and 150 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 12:09:34,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:09:34,211 INFO L93 Difference]: Finished difference Result 203 states and 237 transitions. [2023-04-01 12:09:34,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 12:09:34,212 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 12:09:34,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:09:34,214 INFO L225 Difference]: With dead ends: 203 [2023-04-01 12:09:34,214 INFO L226 Difference]: Without dead ends: 120 [2023-04-01 12:09:34,215 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 12:09:34,216 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 11 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 12:09:34,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 228 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 12:09:34,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2023-04-01 12:09:34,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2023-04-01 12:09:34,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 60 states have (on average 1.25) internal successors, (75), 72 states have internal predecessors, (75), 34 states have call successors, (34), 29 states have call predecessors, (34), 25 states have return successors, (30), 26 states have call predecessors, (30), 30 states have call successors, (30) [2023-04-01 12:09:34,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 139 transitions. [2023-04-01 12:09:34,231 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 139 transitions. Word has length 53 [2023-04-01 12:09:34,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:09:34,231 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 139 transitions. [2023-04-01 12:09:34,232 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 12:09:34,232 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 139 transitions. [2023-04-01 12:09:34,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-04-01 12:09:34,234 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:09:34,234 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] [2023-04-01 12:09:34,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 12:09:34,234 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:09:34,235 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:09:34,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1760605089, now seen corresponding path program 1 times [2023-04-01 12:09:34,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:09:34,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271289588] [2023-04-01 12:09:34,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:09:34,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:09:34,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:09:34,578 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 12:09:34,578 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:09:34,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271289588] [2023-04-01 12:09:34,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271289588] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:09:34,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:09:34,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 12:09:34,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322389663] [2023-04-01 12:09:34,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:09:34,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 12:09:34,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:09:34,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 12:09:34,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-04-01 12:09:34,581 INFO L87 Difference]: Start difference. First operand 120 states and 139 transitions. Second operand has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 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 12:09:34,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:09:34,966 INFO L93 Difference]: Finished difference Result 359 states and 431 transitions. [2023-04-01 12:09:34,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 12:09:34,967 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 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 56 [2023-04-01 12:09:34,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:09:34,976 INFO L225 Difference]: With dead ends: 359 [2023-04-01 12:09:34,976 INFO L226 Difference]: Without dead ends: 264 [2023-04-01 12:09:34,977 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 12:09:34,978 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 282 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-01 12:09:34,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 524 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-01 12:09:34,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2023-04-01 12:09:35,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 256. [2023-04-01 12:09:35,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 134 states have (on average 1.2835820895522387) internal successors, (172), 158 states have internal predecessors, (172), 69 states have call successors, (69), 58 states have call predecessors, (69), 52 states have return successors, (66), 53 states have call predecessors, (66), 65 states have call successors, (66) [2023-04-01 12:09:35,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 307 transitions. [2023-04-01 12:09:35,016 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 307 transitions. Word has length 56 [2023-04-01 12:09:35,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:09:35,016 INFO L495 AbstractCegarLoop]: Abstraction has 256 states and 307 transitions. [2023-04-01 12:09:35,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 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 12:09:35,028 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 307 transitions. [2023-04-01 12:09:35,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-04-01 12:09:35,031 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:09:35,031 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 12:09:35,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 12:09:35,031 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:09:35,031 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:09:35,032 INFO L85 PathProgramCache]: Analyzing trace with hash 2025235206, now seen corresponding path program 1 times [2023-04-01 12:09:35,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:09:35,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649233517] [2023-04-01 12:09:35,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:09:35,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:09:35,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:09:35,184 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 12:09:35,184 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:09:35,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649233517] [2023-04-01 12:09:35,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649233517] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:09:35,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:09:35,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 12:09:35,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944850442] [2023-04-01 12:09:35,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:09:35,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-01 12:09:35,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:09:35,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-01 12:09:35,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-01 12:09:35,187 INFO L87 Difference]: Start difference. First operand 256 states and 307 transitions. Second operand has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2023-04-01 12:09:35,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:09:35,357 INFO L93 Difference]: Finished difference Result 606 states and 756 transitions. [2023-04-01 12:09:35,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-01 12:09:35,358 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 61 [2023-04-01 12:09:35,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:09:35,362 INFO L225 Difference]: With dead ends: 606 [2023-04-01 12:09:35,362 INFO L226 Difference]: Without dead ends: 375 [2023-04-01 12:09:35,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-04-01 12:09:35,373 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 103 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 12:09:35,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 485 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 12:09:35,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2023-04-01 12:09:35,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 361. [2023-04-01 12:09:35,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 197 states have (on average 1.2233502538071066) internal successors, (241), 217 states have internal predecessors, (241), 87 states have call successors, (87), 80 states have call predecessors, (87), 76 states have return successors, (99), 76 states have call predecessors, (99), 83 states have call successors, (99) [2023-04-01 12:09:35,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 427 transitions. [2023-04-01 12:09:35,446 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 427 transitions. Word has length 61 [2023-04-01 12:09:35,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:09:35,447 INFO L495 AbstractCegarLoop]: Abstraction has 361 states and 427 transitions. [2023-04-01 12:09:35,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2023-04-01 12:09:35,447 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 427 transitions. [2023-04-01 12:09:35,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-04-01 12:09:35,457 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:09:35,458 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, 1] [2023-04-01 12:09:35,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 12:09:35,458 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:09:35,459 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:09:35,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1239413233, now seen corresponding path program 1 times [2023-04-01 12:09:35,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:09:35,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205008351] [2023-04-01 12:09:35,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:09:35,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:09:35,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:09:35,950 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 12:09:35,951 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:09:35,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205008351] [2023-04-01 12:09:35,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205008351] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:09:35,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:09:35,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-01 12:09:35,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982371018] [2023-04-01 12:09:35,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:09:35,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 12:09:35,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:09:35,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 12:09:35,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-04-01 12:09:35,956 INFO L87 Difference]: Start difference. First operand 361 states and 427 transitions. Second operand has 12 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 4 states have call successors, (24), 3 states have call predecessors, (24), 6 states have return successors, (18), 7 states have call predecessors, (18), 4 states have call successors, (18) [2023-04-01 12:09:36,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:09:36,410 INFO L93 Difference]: Finished difference Result 1109 states and 1355 transitions. [2023-04-01 12:09:36,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-01 12:09:36,411 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 4 states have call successors, (24), 3 states have call predecessors, (24), 6 states have return successors, (18), 7 states have call predecessors, (18), 4 states have call successors, (18) Word has length 91 [2023-04-01 12:09:36,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:09:36,419 INFO L225 Difference]: With dead ends: 1109 [2023-04-01 12:09:36,420 INFO L226 Difference]: Without dead ends: 773 [2023-04-01 12:09:36,421 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 12:09:36,424 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 163 mSDsluCounter, 717 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 898 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-01 12:09:36,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 898 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 604 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-01 12:09:36,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2023-04-01 12:09:36,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 751. [2023-04-01 12:09:36,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 751 states, 426 states have (on average 1.2230046948356808) internal successors, (521), 458 states have internal predecessors, (521), 170 states have call successors, (170), 155 states have call predecessors, (170), 154 states have return successors, (216), 164 states have call predecessors, (216), 166 states have call successors, (216) [2023-04-01 12:09:36,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 907 transitions. [2023-04-01 12:09:36,501 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 907 transitions. Word has length 91 [2023-04-01 12:09:36,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:09:36,502 INFO L495 AbstractCegarLoop]: Abstraction has 751 states and 907 transitions. [2023-04-01 12:09:36,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 4 states have call successors, (24), 3 states have call predecessors, (24), 6 states have return successors, (18), 7 states have call predecessors, (18), 4 states have call successors, (18) [2023-04-01 12:09:36,502 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 907 transitions. [2023-04-01 12:09:36,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-04-01 12:09:36,505 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:09:36,505 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, 1, 1, 1, 1] [2023-04-01 12:09:36,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-01 12:09:36,505 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:09:36,505 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:09:36,506 INFO L85 PathProgramCache]: Analyzing trace with hash 119834460, now seen corresponding path program 1 times [2023-04-01 12:09:36,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:09:36,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483568572] [2023-04-01 12:09:36,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:09:36,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:09:36,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:09:36,885 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 12:09:36,885 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:09:36,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483568572] [2023-04-01 12:09:36,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483568572] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:09:36,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:09:36,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 12:09:36,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222712723] [2023-04-01 12:09:36,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:09:36,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 12:09:36,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:09:36,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 12:09:36,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-01 12:09:36,888 INFO L87 Difference]: Start difference. First operand 751 states and 907 transitions. Second operand has 9 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 4 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) [2023-04-01 12:09:37,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:09:37,619 INFO L93 Difference]: Finished difference Result 2419 states and 3023 transitions. [2023-04-01 12:09:37,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 12:09:37,619 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 4 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) Word has length 94 [2023-04-01 12:09:37,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:09:37,632 INFO L225 Difference]: With dead ends: 2419 [2023-04-01 12:09:37,633 INFO L226 Difference]: Without dead ends: 1852 [2023-04-01 12:09:37,636 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 12:09:37,638 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 278 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 734 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-01 12:09:37,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 639 Invalid, 817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 734 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-01 12:09:37,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1852 states. [2023-04-01 12:09:37,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1852 to 1592. [2023-04-01 12:09:37,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1592 states, 901 states have (on average 1.2241953385127635) internal successors, (1103), 963 states have internal predecessors, (1103), 355 states have call successors, (355), 316 states have call predecessors, (355), 335 states have return successors, (490), 362 states have call predecessors, (490), 351 states have call successors, (490) [2023-04-01 12:09:37,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1592 states to 1592 states and 1948 transitions. [2023-04-01 12:09:37,815 INFO L78 Accepts]: Start accepts. Automaton has 1592 states and 1948 transitions. Word has length 94 [2023-04-01 12:09:37,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:09:37,816 INFO L495 AbstractCegarLoop]: Abstraction has 1592 states and 1948 transitions. [2023-04-01 12:09:37,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 4 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) [2023-04-01 12:09:37,816 INFO L276 IsEmpty]: Start isEmpty. Operand 1592 states and 1948 transitions. [2023-04-01 12:09:37,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-04-01 12:09:37,819 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:09:37,820 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, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:09:37,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-01 12:09:37,820 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:09:37,820 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:09:37,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1588146308, now seen corresponding path program 1 times [2023-04-01 12:09:37,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:09:37,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671516472] [2023-04-01 12:09:37,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:09:37,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:09:37,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:09:38,101 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 19 proven. 6 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-04-01 12:09:38,102 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:09:38,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671516472] [2023-04-01 12:09:38,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671516472] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 12:09:38,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110480123] [2023-04-01 12:09:38,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:09:38,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 12:09:38,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 12:09:38,106 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 12:09:38,108 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 12:09:38,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:09:38,273 INFO L262 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 8 conjunts are in the unsatisfiable core [2023-04-01 12:09:38,281 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 12:09:38,586 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 29 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:09:38,586 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 12:09:39,047 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 19 proven. 6 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-04-01 12:09:39,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110480123] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 12:09:39,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1572878145] [2023-04-01 12:09:39,105 INFO L159 IcfgInterpreter]: Started Sifa with 107 locations of interest [2023-04-01 12:09:39,105 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 12:09:39,110 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 12:09:39,119 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 12:09:39,120 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 12:09:39,753 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 31 for LOIs [2023-04-01 12:09:39,796 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 131 for LOIs [2023-04-01 12:09:41,947 INFO L197 IcfgInterpreter]: Interpreting procedure runTest with input of size 131 for LOIs [2023-04-01 12:09:42,398 INFO L197 IcfgInterpreter]: Interpreting procedure test with input of size 131 for LOIs [2023-04-01 12:09:47,398 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 166 for LOIs [2023-04-01 12:09:47,441 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 134 for LOIs [2023-04-01 12:09:48,988 INFO L197 IcfgInterpreter]: Interpreting procedure lowerWaterLevel with input of size 123 for LOIs [2023-04-01 12:09:49,015 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment with input of size 128 for LOIs [2023-04-01 12:09:50,222 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__methaneQuery with input of size 126 for LOIs [2023-04-01 12:09:51,239 INFO L197 IcfgInterpreter]: Interpreting procedure isHighWaterLevel with input of size 119 for LOIs [2023-04-01 12:09:51,565 INFO L197 IcfgInterpreter]: Interpreting procedure isHighWaterSensorDry with input of size 119 for LOIs [2023-04-01 12:09:51,587 INFO L197 IcfgInterpreter]: Interpreting procedure activatePump with input of size 131 for LOIs [2023-04-01 12:09:52,165 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneAlarm with input of size 123 for LOIs [2023-04-01 12:09:52,646 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 123 for LOIs [2023-04-01 12:09:52,702 INFO L197 IcfgInterpreter]: Interpreting procedure activatePump__wrappee__highWaterSensor with input of size 121 for LOIs [2023-04-01 12:09:52,720 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 122 for LOIs [2023-04-01 12:09:52,733 INFO L197 IcfgInterpreter]: Interpreting procedure setup with input of size 121 for LOIs [2023-04-01 12:09:52,747 INFO L197 IcfgInterpreter]: Interpreting procedure select_features with input of size 121 for LOIs [2023-04-01 12:09:52,761 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification5_spec__3 with input of size 118 for LOIs [2023-04-01 12:09:53,265 INFO L197 IcfgInterpreter]: Interpreting procedure __automaton_fail with input of size 128 for LOIs [2023-04-01 12:09:53,281 INFO L197 IcfgInterpreter]: Interpreting procedure getWaterLevel with input of size 118 for LOIs [2023-04-01 12:09:53,295 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification5_spec__2 with input of size 128 for LOIs [2023-04-01 12:09:53,560 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 123 for LOIs [2023-04-01 12:09:53,636 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification5_spec__1 with input of size 123 for LOIs [2023-04-01 12:09:53,657 INFO L197 IcfgInterpreter]: Interpreting procedure valid_product with input of size 121 for LOIs [2023-04-01 12:09:53,683 INFO L197 IcfgInterpreter]: Interpreting procedure select_helpers with input of size 121 for LOIs [2023-04-01 12:09:53,702 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-01 12:10:14,152 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '12762#(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 12:10:14,153 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-01 12:10:14,153 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 12:10:14,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 19 [2023-04-01 12:10:14,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069282677] [2023-04-01 12:10:14,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 12:10:14,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-04-01 12:10:14,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:10:14,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-04-01 12:10:14,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=565, Invalid=6077, Unknown=0, NotChecked=0, Total=6642 [2023-04-01 12:10:14,158 INFO L87 Difference]: Start difference. First operand 1592 states and 1948 transitions. Second operand has 19 states, 12 states have (on average 10.0) internal successors, (120), 15 states have internal predecessors, (120), 7 states have call successors, (54), 6 states have call predecessors, (54), 11 states have return successors, (54), 10 states have call predecessors, (54), 6 states have call successors, (54) [2023-04-01 12:10:15,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:10:15,735 INFO L93 Difference]: Finished difference Result 3553 states and 4546 transitions. [2023-04-01 12:10:15,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-04-01 12:10:15,737 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 12 states have (on average 10.0) internal successors, (120), 15 states have internal predecessors, (120), 7 states have call successors, (54), 6 states have call predecessors, (54), 11 states have return successors, (54), 10 states have call predecessors, (54), 6 states have call successors, (54) Word has length 146 [2023-04-01 12:10:15,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:10:15,751 INFO L225 Difference]: With dead ends: 3553 [2023-04-01 12:10:15,752 INFO L226 Difference]: Without dead ends: 2136 [2023-04-01 12:10:15,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 478 GetRequests, 361 SyntacticMatches, 13 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4875 ImplicationChecksByTransitivity, 21.1s TimeCoverageRelationStatistics Valid=818, Invalid=10312, Unknown=0, NotChecked=0, Total=11130 [2023-04-01 12:10:15,763 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 318 mSDsluCounter, 1981 mSDsCounter, 0 mSdLazyCounter, 1682 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 2249 SdHoareTripleChecker+Invalid, 1831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 1682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-01 12:10:15,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [327 Valid, 2249 Invalid, 1831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 1682 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-01 12:10:15,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2136 states. [2023-04-01 12:10:15,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2136 to 1866. [2023-04-01 12:10:15,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1866 states, 1054 states have (on average 1.2077798861480076) internal successors, (1273), 1145 states have internal predecessors, (1273), 423 states have call successors, (423), 392 states have call predecessors, (423), 388 states have return successors, (543), 385 states have call predecessors, (543), 419 states have call successors, (543) [2023-04-01 12:10:15,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1866 states to 1866 states and 2239 transitions. [2023-04-01 12:10:15,920 INFO L78 Accepts]: Start accepts. Automaton has 1866 states and 2239 transitions. Word has length 146 [2023-04-01 12:10:15,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:10:15,921 INFO L495 AbstractCegarLoop]: Abstraction has 1866 states and 2239 transitions. [2023-04-01 12:10:15,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 12 states have (on average 10.0) internal successors, (120), 15 states have internal predecessors, (120), 7 states have call successors, (54), 6 states have call predecessors, (54), 11 states have return successors, (54), 10 states have call predecessors, (54), 6 states have call successors, (54) [2023-04-01 12:10:15,921 INFO L276 IsEmpty]: Start isEmpty. Operand 1866 states and 2239 transitions. [2023-04-01 12:10:15,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2023-04-01 12:10:15,929 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:10:15,929 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, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:10:15,940 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-01 12:10:16,138 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 12:10:16,138 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:10:16,139 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:10:16,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1526015610, now seen corresponding path program 1 times [2023-04-01 12:10:16,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:10:16,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082270513] [2023-04-01 12:10:16,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:10:16,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:10:16,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:10:16,697 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 42 proven. 22 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-04-01 12:10:16,697 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:10:16,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082270513] [2023-04-01 12:10:16,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082270513] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 12:10:16,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888143296] [2023-04-01 12:10:16,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:10:16,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 12:10:16,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 12:10:16,699 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 12:10:16,702 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 12:10:16,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:10:16,876 INFO L262 TraceCheckSpWp]: Trace formula consists of 707 conjuncts, 23 conjunts are in the unsatisfiable core [2023-04-01 12:10:16,887 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 12:10:17,065 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 103 proven. 2 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-04-01 12:10:17,066 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 12:10:17,510 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 40 proven. 3 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2023-04-01 12:10:17,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888143296] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 12:10:17,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [574190740] [2023-04-01 12:10:17,517 INFO L159 IcfgInterpreter]: Started Sifa with 106 locations of interest [2023-04-01 12:10:17,517 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 12:10:17,517 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 12:10:17,518 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 12:10:17,518 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 12:10:17,737 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 31 for LOIs [2023-04-01 12:10:17,762 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 131 for LOIs [2023-04-01 12:10:18,810 INFO L197 IcfgInterpreter]: Interpreting procedure runTest with input of size 131 for LOIs [2023-04-01 12:10:19,104 INFO L197 IcfgInterpreter]: Interpreting procedure test with input of size 131 for LOIs