/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_spec2_product53.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 12:02:03,173 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 12:02:03,175 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 12:02:03,209 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 12:02:03,210 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 12:02:03,212 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 12:02:03,215 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 12:02:03,216 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 12:02:03,217 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 12:02:03,221 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 12:02:03,223 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 12:02:03,224 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 12:02:03,224 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 12:02:03,226 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 12:02:03,227 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 12:02:03,228 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 12:02:03,228 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 12:02:03,229 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 12:02:03,230 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 12:02:03,234 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 12:02:03,235 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 12:02:03,235 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 12:02:03,236 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 12:02:03,237 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 12:02:03,243 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 12:02:03,243 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 12:02:03,243 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 12:02:03,244 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 12:02:03,244 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 12:02:03,245 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 12:02:03,245 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 12:02:03,245 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 12:02:03,246 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 12:02:03,247 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 12:02:03,247 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 12:02:03,247 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 12:02:03,248 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 12:02:03,248 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 12:02:03,248 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 12:02:03,248 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 12:02:03,249 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 12:02:03,250 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 12:02:03,274 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 12:02:03,275 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 12:02:03,275 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 12:02:03,275 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 12:02:03,276 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 12:02:03,276 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 12:02:03,276 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 12:02:03,276 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 12:02:03,276 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 12:02:03,276 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 12:02:03,277 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 12:02:03,277 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 12:02:03,277 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 12:02:03,277 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 12:02:03,277 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 12:02:03,277 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 12:02:03,277 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 12:02:03,277 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 12:02:03,278 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 12:02:03,278 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 12:02:03,278 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 12:02:03,278 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 12:02:03,278 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 12:02:03,278 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 12:02:03,278 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 12:02:03,279 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 12:02:03,279 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 12:02:03,279 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 12:02:03,279 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 12:02:03,279 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 12:02:03,279 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 12:02:03,279 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 12:02:03,279 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 12:02:03,280 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 12:02:03,280 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 12:02:03,280 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 12:02:03,280 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 12:02:03,280 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 12:02:03,280 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 12:02:03,280 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 12:02:03,280 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 12:02:03,280 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> EqDomain [2023-04-01 12:02:03,471 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 12:02:03,497 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 12:02:03,501 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 12:02:03,502 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 12:02:03,503 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 12:02:03,503 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec2_product53.cil.c [2023-04-01 12:02:04,715 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 12:02:04,897 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 12:02:04,898 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec2_product53.cil.c [2023-04-01 12:02:04,905 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/537220b09/df6cc8dc1a944acc83a660d7b72748f0/FLAGce8280e9d [2023-04-01 12:02:04,914 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/537220b09/df6cc8dc1a944acc83a660d7b72748f0 [2023-04-01 12:02:04,916 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 12:02:04,917 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 12:02:04,918 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 12:02:04,918 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 12:02:04,924 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 12:02:04,924 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:02:04" (1/1) ... [2023-04-01 12:02:04,925 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d1723a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:02:04, skipping insertion in model container [2023-04-01 12:02:04,925 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:02:04" (1/1) ... [2023-04-01 12:02:04,930 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 12:02:04,973 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 12:02:05,102 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_spec2_product53.cil.c[1605,1618] [2023-04-01 12:02:05,180 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 12:02:05,188 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 12:02:05,197 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_spec2_product53.cil.c[1605,1618] [2023-04-01 12:02:05,225 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 12:02:05,238 INFO L208 MainTranslator]: Completed translation [2023-04-01 12:02:05,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:02:05 WrapperNode [2023-04-01 12:02:05,238 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 12:02:05,239 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 12:02:05,239 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 12:02:05,239 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 12:02:05,247 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:02:05" (1/1) ... [2023-04-01 12:02:05,247 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:02:05" (1/1) ... [2023-04-01 12:02:05,255 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:02:05" (1/1) ... [2023-04-01 12:02:05,255 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:02:05" (1/1) ... [2023-04-01 12:02:05,268 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:02:05" (1/1) ... [2023-04-01 12:02:05,273 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:02:05" (1/1) ... [2023-04-01 12:02:05,275 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:02:05" (1/1) ... [2023-04-01 12:02:05,276 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:02:05" (1/1) ... [2023-04-01 12:02:05,280 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 12:02:05,280 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 12:02:05,280 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 12:02:05,280 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 12:02:05,281 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:02:05" (1/1) ... [2023-04-01 12:02:05,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 12:02:05,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 12:02:05,316 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 12:02:05,319 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 12:02:05,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 12:02:05,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 12:02:05,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2023-04-01 12:02:05,343 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 12:02:05,343 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-04-01 12:02:05,343 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2023-04-01 12:02:05,343 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2023-04-01 12:02:05,344 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2023-04-01 12:02:05,344 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2023-04-01 12:02:05,344 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2023-04-01 12:02:05,344 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2023-04-01 12:02:05,344 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2023-04-01 12:02:05,344 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-04-01 12:02:05,344 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2023-04-01 12:02:05,344 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2023-04-01 12:02:05,344 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2023-04-01 12:02:05,345 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2023-04-01 12:02:05,345 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2023-04-01 12:02:05,345 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2023-04-01 12:02:05,345 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2023-04-01 12:02:05,345 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2023-04-01 12:02:05,345 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2023-04-01 12:02:05,345 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2023-04-01 12:02:05,345 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2023-04-01 12:02:05,345 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2023-04-01 12:02:05,346 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2023-04-01 12:02:05,346 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-04-01 12:02:05,346 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2023-04-01 12:02:05,346 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2023-04-01 12:02:05,346 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2023-04-01 12:02:05,346 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 12:02:05,346 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2023-04-01 12:02:05,346 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2023-04-01 12:02:05,346 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2023-04-01 12:02:05,346 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2023-04-01 12:02:05,346 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2023-04-01 12:02:05,346 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2023-04-01 12:02:05,346 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2023-04-01 12:02:05,347 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2023-04-01 12:02:05,347 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2023-04-01 12:02:05,347 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2023-04-01 12:02:05,347 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2023-04-01 12:02:05,347 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2023-04-01 12:02:05,347 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 12:02:05,348 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 12:02:05,348 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 12:02:05,348 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 12:02:05,348 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 12:02:05,349 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2023-04-01 12:02:05,349 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-04-01 12:02:05,349 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2023-04-01 12:02:05,349 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2023-04-01 12:02:05,349 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-04-01 12:02:05,349 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-04-01 12:02:05,349 INFO L130 BoogieDeclarations]: Found specification of procedure test [2023-04-01 12:02:05,349 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-01 12:02:05,350 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-01 12:02:05,350 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2023-04-01 12:02:05,350 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-01 12:02:05,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-01 12:02:05,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 12:02:05,351 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-01 12:02:05,351 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2023-04-01 12:02:05,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 12:02:05,351 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2023-04-01 12:02:05,351 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2023-04-01 12:02:05,351 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 12:02:05,351 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2023-04-01 12:02:05,351 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2023-04-01 12:02:05,351 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2023-04-01 12:02:05,351 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2023-04-01 12:02:05,351 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2023-04-01 12:02:05,352 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2023-04-01 12:02:05,352 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2023-04-01 12:02:05,352 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2023-04-01 12:02:05,352 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2023-04-01 12:02:05,352 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2023-04-01 12:02:05,352 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2023-04-01 12:02:05,352 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2023-04-01 12:02:05,352 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2023-04-01 12:02:05,352 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2023-04-01 12:02:05,352 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2023-04-01 12:02:05,352 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2023-04-01 12:02:05,353 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2023-04-01 12:02:05,353 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2023-04-01 12:02:05,353 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2023-04-01 12:02:05,353 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2023-04-01 12:02:05,353 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2023-04-01 12:02:05,353 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2023-04-01 12:02:05,354 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2023-04-01 12:02:05,354 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2023-04-01 12:02:05,354 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2023-04-01 12:02:05,354 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2023-04-01 12:02:05,354 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2023-04-01 12:02:05,354 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 12:02:05,354 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2023-04-01 12:02:05,354 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2023-04-01 12:02:05,354 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 12:02:05,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 12:02:05,354 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 12:02:05,506 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 12:02:05,508 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 12:02:05,930 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 12:02:06,004 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 12:02:06,005 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-04-01 12:02:06,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:02:06 BoogieIcfgContainer [2023-04-01 12:02:06,007 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 12:02:06,008 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 12:02:06,008 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 12:02:06,010 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 12:02:06,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 12:02:04" (1/3) ... [2023-04-01 12:02:06,011 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f7d112b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:02:06, skipping insertion in model container [2023-04-01 12:02:06,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:02:05" (2/3) ... [2023-04-01 12:02:06,011 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f7d112b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:02:06, skipping insertion in model container [2023-04-01 12:02:06,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:02:06" (3/3) ... [2023-04-01 12:02:06,012 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product53.cil.c [2023-04-01 12:02:06,024 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 12:02:06,024 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 12:02:06,062 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 12:02:06,069 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;@16b241dd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 12:02:06,069 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 12:02:06,074 INFO L276 IsEmpty]: Start isEmpty. Operand has 157 states, 72 states have (on average 1.2638888888888888) internal successors, (91), 86 states have internal predecessors, (91), 51 states have call successors, (51), 31 states have call predecessors, (51), 31 states have return successors, (51), 45 states have call predecessors, (51), 51 states have call successors, (51) [2023-04-01 12:02:06,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-04-01 12:02:06,082 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:02:06,083 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:02:06,083 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:02:06,087 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:02:06,087 INFO L85 PathProgramCache]: Analyzing trace with hash 317982389, now seen corresponding path program 1 times [2023-04-01 12:02:06,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:02:06,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652486125] [2023-04-01 12:02:06,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:02:06,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:02:06,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:02:06,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:02:06,305 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:02:06,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652486125] [2023-04-01 12:02:06,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652486125] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:02:06,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:02:06,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-04-01 12:02:06,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521418310] [2023-04-01 12:02:06,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:02:06,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-04-01 12:02:06,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:02:06,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-04-01 12:02:06,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-01 12:02:06,351 INFO L87 Difference]: Start difference. First operand has 157 states, 72 states have (on average 1.2638888888888888) internal successors, (91), 86 states have internal predecessors, (91), 51 states have call successors, (51), 31 states have call predecessors, (51), 31 states have return successors, (51), 45 states have call predecessors, (51), 51 states have call successors, (51) Second operand has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-04-01 12:02:06,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:02:06,443 INFO L93 Difference]: Finished difference Result 244 states and 297 transitions. [2023-04-01 12:02:06,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-04-01 12:02:06,449 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 46 [2023-04-01 12:02:06,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:02:06,455 INFO L225 Difference]: With dead ends: 244 [2023-04-01 12:02:06,456 INFO L226 Difference]: Without dead ends: 124 [2023-04-01 12:02:06,461 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 12:02:06,466 INFO L413 NwaCegarLoop]: 136 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, 136 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 12:02:06,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 136 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 12:02:06,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2023-04-01 12:02:06,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2023-04-01 12:02:06,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 63 states have (on average 1.2222222222222223) internal successors, (77), 74 states have internal predecessors, (77), 36 states have call successors, (36), 29 states have call predecessors, (36), 24 states have return successors, (31), 25 states have call predecessors, (31), 31 states have call successors, (31) [2023-04-01 12:02:06,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 144 transitions. [2023-04-01 12:02:06,522 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 144 transitions. Word has length 46 [2023-04-01 12:02:06,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:02:06,523 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 144 transitions. [2023-04-01 12:02:06,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-04-01 12:02:06,524 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 144 transitions. [2023-04-01 12:02:06,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-04-01 12:02:06,529 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:02:06,529 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:02:06,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 12:02:06,530 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:02:06,530 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:02:06,530 INFO L85 PathProgramCache]: Analyzing trace with hash 308724609, now seen corresponding path program 1 times [2023-04-01 12:02:06,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:02:06,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175121727] [2023-04-01 12:02:06,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:02:06,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:02:06,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:02:06,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:02:06,657 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:02:06,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175121727] [2023-04-01 12:02:06,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175121727] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:02:06,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:02:06,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 12:02:06,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237736931] [2023-04-01 12:02:06,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:02:06,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 12:02:06,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:02:06,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 12:02:06,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 12:02:06,662 INFO L87 Difference]: Start difference. First operand 124 states and 144 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-04-01 12:02:06,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:02:06,725 INFO L93 Difference]: Finished difference Result 202 states and 236 transitions. [2023-04-01 12:02:06,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 12:02:06,726 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 47 [2023-04-01 12:02:06,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:02:06,728 INFO L225 Difference]: With dead ends: 202 [2023-04-01 12:02:06,728 INFO L226 Difference]: Without dead ends: 116 [2023-04-01 12:02:06,728 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 12:02:06,729 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 7 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 12:02:06,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 222 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 12:02:06,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2023-04-01 12:02:06,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2023-04-01 12:02:06,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 58 states have (on average 1.2241379310344827) internal successors, (71), 69 states have internal predecessors, (71), 33 states have call successors, (33), 28 states have call predecessors, (33), 24 states have return successors, (29), 23 states have call predecessors, (29), 29 states have call successors, (29) [2023-04-01 12:02:06,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 133 transitions. [2023-04-01 12:02:06,739 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 133 transitions. Word has length 47 [2023-04-01 12:02:06,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:02:06,739 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 133 transitions. [2023-04-01 12:02:06,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-04-01 12:02:06,740 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 133 transitions. [2023-04-01 12:02:06,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-04-01 12:02:06,743 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:02:06,743 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:02:06,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 12:02:06,743 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:02:06,744 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:02:06,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1088120453, now seen corresponding path program 1 times [2023-04-01 12:02:06,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:02:06,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114059346] [2023-04-01 12:02:06,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:02:06,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:02:06,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:02:06,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:02:06,925 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:02:06,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114059346] [2023-04-01 12:02:06,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114059346] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:02:06,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:02:06,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 12:02:06,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329736715] [2023-04-01 12:02:06,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:02:06,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 12:02:06,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:02:06,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 12:02:06,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-04-01 12:02:06,928 INFO L87 Difference]: Start difference. First operand 116 states and 133 transitions. Second operand has 7 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 4 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-04-01 12:02:07,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:02:07,176 INFO L93 Difference]: Finished difference Result 207 states and 242 transitions. [2023-04-01 12:02:07,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-01 12:02:07,177 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 4 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 49 [2023-04-01 12:02:07,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:02:07,178 INFO L225 Difference]: With dead ends: 207 [2023-04-01 12:02:07,178 INFO L226 Difference]: Without dead ends: 116 [2023-04-01 12:02:07,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 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 12:02:07,180 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 182 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 12:02:07,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 323 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 12:02:07,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2023-04-01 12:02:07,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2023-04-01 12:02:07,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 58 states have (on average 1.206896551724138) internal successors, (70), 68 states have internal predecessors, (70), 33 states have call successors, (33), 28 states have call predecessors, (33), 24 states have return successors, (29), 23 states have call predecessors, (29), 29 states have call successors, (29) [2023-04-01 12:02:07,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 132 transitions. [2023-04-01 12:02:07,189 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 132 transitions. Word has length 49 [2023-04-01 12:02:07,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:02:07,189 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 132 transitions. [2023-04-01 12:02:07,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 4 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-04-01 12:02:07,190 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 132 transitions. [2023-04-01 12:02:07,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-04-01 12:02:07,190 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:02:07,191 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] [2023-04-01 12:02:07,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 12:02:07,191 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:02:07,191 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:02:07,191 INFO L85 PathProgramCache]: Analyzing trace with hash -437923061, now seen corresponding path program 1 times [2023-04-01 12:02:07,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:02:07,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998609310] [2023-04-01 12:02:07,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:02:07,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:02:07,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:02:07,255 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 12:02:07,256 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:02:07,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998609310] [2023-04-01 12:02:07,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998609310] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:02:07,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:02:07,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 12:02:07,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204667783] [2023-04-01 12:02:07,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:02:07,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 12:02:07,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:02:07,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 12:02:07,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 12:02:07,258 INFO L87 Difference]: Start difference. First operand 116 states and 132 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 4 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2023-04-01 12:02:07,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:02:07,540 INFO L93 Difference]: Finished difference Result 299 states and 356 transitions. [2023-04-01 12:02:07,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 12:02:07,541 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 4 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) Word has length 66 [2023-04-01 12:02:07,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:02:07,542 INFO L225 Difference]: With dead ends: 299 [2023-04-01 12:02:07,543 INFO L226 Difference]: Without dead ends: 208 [2023-04-01 12:02:07,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-04-01 12:02:07,544 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 194 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 12:02:07,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 149 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 12:02:07,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2023-04-01 12:02:07,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 193. [2023-04-01 12:02:07,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 104 states have (on average 1.1634615384615385) internal successors, (121), 112 states have internal predecessors, (121), 44 states have call successors, (44), 41 states have call predecessors, (44), 44 states have return successors, (49), 44 states have call predecessors, (49), 40 states have call successors, (49) [2023-04-01 12:02:07,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 214 transitions. [2023-04-01 12:02:07,562 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 214 transitions. Word has length 66 [2023-04-01 12:02:07,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:02:07,562 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 214 transitions. [2023-04-01 12:02:07,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 4 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2023-04-01 12:02:07,563 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 214 transitions. [2023-04-01 12:02:07,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-04-01 12:02:07,563 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:02:07,563 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:02:07,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 12:02:07,564 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:02:07,564 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:02:07,564 INFO L85 PathProgramCache]: Analyzing trace with hash -465463820, now seen corresponding path program 1 times [2023-04-01 12:02:07,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:02:07,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819195665] [2023-04-01 12:02:07,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:02:07,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:02:07,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:02:07,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:02:07,688 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:02:07,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819195665] [2023-04-01 12:02:07,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819195665] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:02:07,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:02:07,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 12:02:07,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121236467] [2023-04-01 12:02:07,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:02:07,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 12:02:07,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:02:07,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 12:02:07,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-01 12:02:07,691 INFO L87 Difference]: Start difference. First operand 193 states and 214 transitions. Second operand has 7 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 4 states have call successors, (20), 4 states have call predecessors, (20), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2023-04-01 12:02:07,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:02:07,976 INFO L93 Difference]: Finished difference Result 375 states and 429 transitions. [2023-04-01 12:02:07,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-01 12:02:07,977 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 4 states have call successors, (20), 4 states have call predecessors, (20), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) Word has length 76 [2023-04-01 12:02:07,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:02:07,979 INFO L225 Difference]: With dead ends: 375 [2023-04-01 12:02:07,979 INFO L226 Difference]: Without dead ends: 207 [2023-04-01 12:02:07,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2023-04-01 12:02:07,993 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 142 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 12:02:07,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 259 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 12:02:07,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2023-04-01 12:02:08,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 192. [2023-04-01 12:02:08,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 103 states have (on average 1.145631067961165) internal successors, (118), 111 states have internal predecessors, (118), 44 states have call successors, (44), 41 states have call predecessors, (44), 44 states have return successors, (49), 44 states have call predecessors, (49), 40 states have call successors, (49) [2023-04-01 12:02:08,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 211 transitions. [2023-04-01 12:02:08,007 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 211 transitions. Word has length 76 [2023-04-01 12:02:08,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:02:08,021 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 211 transitions. [2023-04-01 12:02:08,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 4 states have call successors, (20), 4 states have call predecessors, (20), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2023-04-01 12:02:08,021 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 211 transitions. [2023-04-01 12:02:08,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-04-01 12:02:08,022 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:02:08,022 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:02:08,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-01 12:02:08,022 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:02:08,023 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:02:08,023 INFO L85 PathProgramCache]: Analyzing trace with hash -426252997, now seen corresponding path program 1 times [2023-04-01 12:02:08,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:02:08,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843021005] [2023-04-01 12:02:08,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:02:08,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:02:08,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:02:08,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:02:08,163 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:02:08,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843021005] [2023-04-01 12:02:08,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843021005] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:02:08,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:02:08,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 12:02:08,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876530907] [2023-04-01 12:02:08,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:02:08,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 12:02:08,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:02:08,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 12:02:08,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 12:02:08,166 INFO L87 Difference]: Start difference. First operand 192 states and 211 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-04-01 12:02:08,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:02:08,229 INFO L93 Difference]: Finished difference Result 339 states and 385 transitions. [2023-04-01 12:02:08,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 12:02:08,230 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 76 [2023-04-01 12:02:08,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:02:08,232 INFO L225 Difference]: With dead ends: 339 [2023-04-01 12:02:08,232 INFO L226 Difference]: Without dead ends: 336 [2023-04-01 12:02:08,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 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 12:02:08,233 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 104 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 12:02:08,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 204 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 12:02:08,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2023-04-01 12:02:08,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 323. [2023-04-01 12:02:08,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 176 states have (on average 1.1420454545454546) internal successors, (201), 190 states have internal predecessors, (201), 71 states have call successors, (71), 66 states have call predecessors, (71), 75 states have return successors, (93), 73 states have call predecessors, (93), 67 states have call successors, (93) [2023-04-01 12:02:08,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 365 transitions. [2023-04-01 12:02:08,285 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 365 transitions. Word has length 76 [2023-04-01 12:02:08,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:02:08,285 INFO L495 AbstractCegarLoop]: Abstraction has 323 states and 365 transitions. [2023-04-01 12:02:08,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-04-01 12:02:08,285 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 365 transitions. [2023-04-01 12:02:08,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-04-01 12:02:08,287 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:02:08,287 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-01 12:02:08,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-01 12:02:08,287 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:02:08,287 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:02:08,287 INFO L85 PathProgramCache]: Analyzing trace with hash 8359676, now seen corresponding path program 1 times [2023-04-01 12:02:08,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:02:08,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346726421] [2023-04-01 12:02:08,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:02:08,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:02:08,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:02:08,387 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 19 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-04-01 12:02:08,387 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:02:08,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346726421] [2023-04-01 12:02:08,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346726421] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 12:02:08,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972444446] [2023-04-01 12:02:08,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:02:08,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 12:02:08,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 12:02:08,390 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 12:02:08,391 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 12:02:08,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:02:08,508 INFO L262 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 12:02:08,514 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 12:02:08,596 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:02:08,596 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 12:02:08,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1972444446] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:02:08,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 12:02:08,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2023-04-01 12:02:08,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837806971] [2023-04-01 12:02:08,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:02:08,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 12:02:08,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:02:08,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 12:02:08,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-04-01 12:02:08,597 INFO L87 Difference]: Start difference. First operand 323 states and 365 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2023-04-01 12:02:08,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:02:08,638 INFO L93 Difference]: Finished difference Result 571 states and 649 transitions. [2023-04-01 12:02:08,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 12:02:08,638 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 129 [2023-04-01 12:02:08,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:02:08,639 INFO L225 Difference]: With dead ends: 571 [2023-04-01 12:02:08,639 INFO L226 Difference]: Without dead ends: 273 [2023-04-01 12:02:08,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-04-01 12:02:08,641 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 53 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 12:02:08,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 230 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 12:02:08,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2023-04-01 12:02:08,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2023-04-01 12:02:08,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 148 states have (on average 1.1283783783783783) internal successors, (167), 161 states have internal predecessors, (167), 61 states have call successors, (61), 56 states have call predecessors, (61), 63 states have return successors, (73), 62 states have call predecessors, (73), 57 states have call successors, (73) [2023-04-01 12:02:08,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 301 transitions. [2023-04-01 12:02:08,657 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 301 transitions. Word has length 129 [2023-04-01 12:02:08,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:02:08,658 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 301 transitions. [2023-04-01 12:02:08,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2023-04-01 12:02:08,658 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 301 transitions. [2023-04-01 12:02:08,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-04-01 12:02:08,659 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:02:08,659 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:02:08,665 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-04-01 12:02:08,867 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 12:02:08,867 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:02:08,867 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:02:08,867 INFO L85 PathProgramCache]: Analyzing trace with hash 207588937, now seen corresponding path program 1 times [2023-04-01 12:02:08,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:02:08,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009428627] [2023-04-01 12:02:08,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:02:08,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:02:08,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:02:09,266 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-04-01 12:02:09,266 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:02:09,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009428627] [2023-04-01 12:02:09,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009428627] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 12:02:09,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011736757] [2023-04-01 12:02:09,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:02:09,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 12:02:09,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 12:02:09,281 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 12:02:09,282 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 12:02:09,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:02:09,400 INFO L262 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 27 conjunts are in the unsatisfiable core [2023-04-01 12:02:09,404 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 12:02:09,976 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-01 12:02:09,976 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 12:02:09,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2011736757] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:02:09,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 12:02:09,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [11] total 21 [2023-04-01 12:02:09,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845773974] [2023-04-01 12:02:09,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:02:09,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 12:02:09,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:02:09,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 12:02:09,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=370, Unknown=0, NotChecked=0, Total=420 [2023-04-01 12:02:09,979 INFO L87 Difference]: Start difference. First operand 273 states and 301 transitions. Second operand has 12 states, 10 states have (on average 8.0) internal successors, (80), 9 states have internal predecessors, (80), 7 states have call successors, (33), 6 states have call predecessors, (33), 6 states have return successors, (27), 6 states have call predecessors, (27), 7 states have call successors, (27) [2023-04-01 12:02:11,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:02:11,133 INFO L93 Difference]: Finished difference Result 607 states and 695 transitions. [2023-04-01 12:02:11,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-04-01 12:02:11,134 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 8.0) internal successors, (80), 9 states have internal predecessors, (80), 7 states have call successors, (33), 6 states have call predecessors, (33), 6 states have return successors, (27), 6 states have call predecessors, (27), 7 states have call successors, (27) Word has length 141 [2023-04-01 12:02:11,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:02:11,136 INFO L225 Difference]: With dead ends: 607 [2023-04-01 12:02:11,136 INFO L226 Difference]: Without dead ends: 359 [2023-04-01 12:02:11,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=128, Invalid=928, Unknown=0, NotChecked=0, Total=1056 [2023-04-01 12:02:11,139 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 208 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 1106 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 1208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-01 12:02:11,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 188 Invalid, 1208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1106 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-01 12:02:11,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2023-04-01 12:02:11,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 316. [2023-04-01 12:02:11,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 176 states have (on average 1.125) internal successors, (198), 189 states have internal predecessors, (198), 70 states have call successors, (70), 66 states have call predecessors, (70), 69 states have return successors, (82), 68 states have call predecessors, (82), 66 states have call successors, (82) [2023-04-01 12:02:11,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 350 transitions. [2023-04-01 12:02:11,198 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 350 transitions. Word has length 141 [2023-04-01 12:02:11,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:02:11,199 INFO L495 AbstractCegarLoop]: Abstraction has 316 states and 350 transitions. [2023-04-01 12:02:11,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 8.0) internal successors, (80), 9 states have internal predecessors, (80), 7 states have call successors, (33), 6 states have call predecessors, (33), 6 states have return successors, (27), 6 states have call predecessors, (27), 7 states have call successors, (27) [2023-04-01 12:02:11,199 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 350 transitions. [2023-04-01 12:02:11,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-04-01 12:02:11,201 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:02:11,202 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:02:11,211 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-01 12:02:11,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-04-01 12:02:11,403 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:02:11,403 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:02:11,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1058747709, now seen corresponding path program 1 times [2023-04-01 12:02:11,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:02:11,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174793060] [2023-04-01 12:02:11,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:02:11,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:02:11,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:02:11,684 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-04-01 12:02:11,684 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:02:11,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174793060] [2023-04-01 12:02:11,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174793060] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 12:02:11,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425583750] [2023-04-01 12:02:11,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:02:11,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 12:02:11,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 12:02:11,701 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 12:02:11,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-01 12:02:11,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:02:11,863 INFO L262 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 48 conjunts are in the unsatisfiable core [2023-04-01 12:02:11,869 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 12:02:12,505 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 23 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:02:12,505 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 12:02:13,455 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-04-01 12:02:13,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [425583750] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 12:02:13,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1581270180] [2023-04-01 12:02:13,497 INFO L159 IcfgInterpreter]: Started Sifa with 108 locations of interest [2023-04-01 12:02:13,497 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 12:02:13,501 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 12:02:13,504 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 12:02:13,505 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 12:02:14,030 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 31 for LOIs [2023-04-01 12:02:14,085 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 129 for LOIs [2023-04-01 12:02:15,561 INFO L197 IcfgInterpreter]: Interpreting procedure runTest with input of size 129 for LOIs [2023-04-01 12:02:15,992 INFO L197 IcfgInterpreter]: Interpreting procedure test with input of size 129 for LOIs [2023-04-01 12:02:18,360 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 133 for LOIs [2023-04-01 12:02:18,401 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 142 for LOIs [2023-04-01 12:02:18,873 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification2_spec__2 with input of size 122 for LOIs [2023-04-01 12:02:19,033 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment with input of size 137 for LOIs [2023-04-01 12:02:19,266 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__lowWaterSensor with input of size 137 for LOIs [2023-04-01 12:02:19,501 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 137 for LOIs [2023-04-01 12:02:19,905 INFO L197 IcfgInterpreter]: Interpreting procedure isHighWaterLevel with input of size 135 for LOIs [2023-04-01 12:02:20,178 INFO L197 IcfgInterpreter]: Interpreting procedure isHighWaterSensorDry with input of size 135 for LOIs [2023-04-01 12:02:20,206 INFO L197 IcfgInterpreter]: Interpreting procedure activatePump with input of size 131 for LOIs [2023-04-01 12:02:20,222 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 120 for LOIs [2023-04-01 12:02:20,238 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification2_spec__1 with input of size 123 for LOIs [2023-04-01 12:02:20,252 INFO L197 IcfgInterpreter]: Interpreting procedure setup with input of size 121 for LOIs [2023-04-01 12:02:20,264 INFO L197 IcfgInterpreter]: Interpreting procedure select_features with input of size 121 for LOIs [2023-04-01 12:02:20,276 INFO L197 IcfgInterpreter]: Interpreting procedure valid_product with input of size 121 for LOIs [2023-04-01 12:02:20,293 INFO L197 IcfgInterpreter]: Interpreting procedure select_helpers with input of size 121 for LOIs [2023-04-01 12:02:20,305 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-01 12:02:27,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1581270180] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:02:27,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-04-01 12:02:27,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [11, 17, 18] total 75 [2023-04-01 12:02:27,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130493095] [2023-04-01 12:02:27,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:02:27,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-04-01 12:02:27,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:02:27,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-04-01 12:02:27,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=596, Invalid=4954, Unknown=0, NotChecked=0, Total=5550 [2023-04-01 12:02:27,805 INFO L87 Difference]: Start difference. First operand 316 states and 350 transitions. Second operand has 36 states, 24 states have (on average 2.5833333333333335) internal successors, (62), 28 states have internal predecessors, (62), 13 states have call successors, (29), 11 states have call predecessors, (29), 12 states have return successors, (25), 14 states have call predecessors, (25), 12 states have call successors, (25) [2023-04-01 12:02:39,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:02:39,937 INFO L93 Difference]: Finished difference Result 917 states and 1067 transitions. [2023-04-01 12:02:39,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-04-01 12:02:39,938 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 24 states have (on average 2.5833333333333335) internal successors, (62), 28 states have internal predecessors, (62), 13 states have call successors, (29), 11 states have call predecessors, (29), 12 states have return successors, (25), 14 states have call predecessors, (25), 12 states have call successors, (25) Word has length 144 [2023-04-01 12:02:39,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:02:39,941 INFO L225 Difference]: With dead ends: 917 [2023-04-01 12:02:39,941 INFO L226 Difference]: Without dead ends: 626 [2023-04-01 12:02:39,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 477 GetRequests, 366 SyntacticMatches, 4 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3218 ImplicationChecksByTransitivity, 17.0s TimeCoverageRelationStatistics Valid=1456, Invalid=10316, Unknown=0, NotChecked=0, Total=11772 [2023-04-01 12:02:39,944 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 448 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 3713 mSolverCounterSat, 358 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 4071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 358 IncrementalHoareTripleChecker+Valid, 3713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-04-01 12:02:39,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [462 Valid, 239 Invalid, 4071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [358 Valid, 3713 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-04-01 12:02:39,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2023-04-01 12:02:40,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 554. [2023-04-01 12:02:40,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 317 states have (on average 1.113564668769716) internal successors, (353), 334 states have internal predecessors, (353), 118 states have call successors, (118), 112 states have call predecessors, (118), 118 states have return successors, (137), 117 states have call predecessors, (137), 114 states have call successors, (137) [2023-04-01 12:02:40,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 608 transitions. [2023-04-01 12:02:40,051 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 608 transitions. Word has length 144 [2023-04-01 12:02:40,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:02:40,053 INFO L495 AbstractCegarLoop]: Abstraction has 554 states and 608 transitions. [2023-04-01 12:02:40,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 24 states have (on average 2.5833333333333335) internal successors, (62), 28 states have internal predecessors, (62), 13 states have call successors, (29), 11 states have call predecessors, (29), 12 states have return successors, (25), 14 states have call predecessors, (25), 12 states have call successors, (25) [2023-04-01 12:02:40,053 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 608 transitions. [2023-04-01 12:02:40,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-04-01 12:02:40,056 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:02:40,056 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:02:40,085 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-04-01 12:02:40,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 12:02:40,262 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:02:40,262 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:02:40,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1350012333, now seen corresponding path program 1 times [2023-04-01 12:02:40,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:02:40,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313387062] [2023-04-01 12:02:40,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:02:40,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:02:40,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:02:40,632 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-04-01 12:02:40,632 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:02:40,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313387062] [2023-04-01 12:02:40,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313387062] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 12:02:40,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669819578] [2023-04-01 12:02:40,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:02:40,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 12:02:40,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 12:02:40,645 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 12:02:40,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-01 12:02:40,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:02:40,766 INFO L262 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 48 conjunts are in the unsatisfiable core [2023-04-01 12:02:40,771 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 12:02:41,205 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 23 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:02:41,206 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 12:02:42,036 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-04-01 12:02:42,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [669819578] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 12:02:42,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1332040870] [2023-04-01 12:02:42,038 INFO L159 IcfgInterpreter]: Started Sifa with 111 locations of interest [2023-04-01 12:02:42,038 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 12:02:42,039 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 12:02:42,039 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 12:02:42,039 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 12:02:42,289 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 31 for LOIs [2023-04-01 12:02:42,318 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 129 for LOIs [2023-04-01 12:02:43,471 INFO L197 IcfgInterpreter]: Interpreting procedure runTest with input of size 129 for LOIs [2023-04-01 12:02:43,707 INFO L197 IcfgInterpreter]: Interpreting procedure test with input of size 129 for LOIs [2023-04-01 12:02:54,881 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 204 for LOIs [2023-04-01 12:02:55,067 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 199 for LOIs [2023-04-01 12:02:56,189 INFO L197 IcfgInterpreter]: Interpreting procedure lowerWaterLevel with input of size 197 for LOIs [2023-04-01 12:02:56,222 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification2_spec__2 with input of size 196 for LOIs [2023-04-01 12:02:56,971 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 201 for LOIs [2023-04-01 12:02:56,998 INFO L197 IcfgInterpreter]: Interpreting procedure __automaton_fail with input of size 203 for LOIs [2023-04-01 12:02:57,031 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment with input of size 194 for LOIs [2023-04-01 12:02:58,191 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__lowWaterSensor with input of size 200 for LOIs [2023-04-01 12:02:59,422 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 200 for LOIs [2023-04-01 12:03:00,603 INFO L197 IcfgInterpreter]: Interpreting procedure isHighWaterLevel with input of size 193 for LOIs [2023-04-01 12:03:00,961 INFO L197 IcfgInterpreter]: Interpreting procedure isHighWaterSensorDry with input of size 193 for LOIs [2023-04-01 12:03:01,001 INFO L197 IcfgInterpreter]: Interpreting procedure activatePump with input of size 205 for LOIs [2023-04-01 12:03:01,032 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 157 for LOIs [2023-04-01 12:03:01,050 INFO L197 IcfgInterpreter]: Interpreting procedure isLowWaterLevel with input of size 157 for LOIs [2023-04-01 12:03:01,357 INFO L197 IcfgInterpreter]: Interpreting procedure isLowWaterSensorDry with input of size 157 for LOIs [2023-04-01 12:03:01,381 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneAlarm with input of size 194 for LOIs [2023-04-01 12:03:01,688 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 194 for LOIs [2023-04-01 12:03:01,714 INFO L197 IcfgInterpreter]: Interpreting procedure changeMethaneLevel with input of size 193 for LOIs [2023-04-01 12:03:01,745 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification2_spec__1 with input of size 123 for LOIs [2023-04-01 12:03:01,760 INFO L197 IcfgInterpreter]: Interpreting procedure setup with input of size 121 for LOIs [2023-04-01 12:03:01,772 INFO L197 IcfgInterpreter]: Interpreting procedure select_features with input of size 121 for LOIs [2023-04-01 12:03:01,785 INFO L197 IcfgInterpreter]: Interpreting procedure valid_product with input of size 121 for LOIs [2023-04-01 12:03:01,802 INFO L197 IcfgInterpreter]: Interpreting procedure select_helpers with input of size 121 for LOIs [2023-04-01 12:03:01,814 INFO L180 IcfgInterpreter]: Interpretation finished