/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 OctagonDomain -i ../sv-benchmarks/c/product-lines/minepump_spec3_product52.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 05:57:43,215 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 05:57:43,216 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 05:57:43,234 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 05:57:43,234 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 05:57:43,235 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 05:57:43,236 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 05:57:43,237 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 05:57:43,238 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 05:57:43,239 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 05:57:43,239 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 05:57:43,240 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 05:57:43,240 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 05:57:43,241 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 05:57:43,241 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 05:57:43,242 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 05:57:43,242 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 05:57:43,243 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 05:57:43,244 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 05:57:43,245 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 05:57:43,246 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 05:57:43,257 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 05:57:43,258 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 05:57:43,259 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 05:57:43,261 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 05:57:43,261 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 05:57:43,261 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 05:57:43,262 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 05:57:43,262 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 05:57:43,263 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 05:57:43,263 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 05:57:43,263 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 05:57:43,264 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 05:57:43,264 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 05:57:43,264 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 05:57:43,265 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 05:57:43,265 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 05:57:43,265 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 05:57:43,265 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 05:57:43,266 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 05:57:43,266 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 05:57:43,267 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 05:57:43,280 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 05:57:43,280 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 05:57:43,280 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 05:57:43,280 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 05:57:43,281 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 05:57:43,281 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 05:57:43,281 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 05:57:43,281 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 05:57:43,281 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 05:57:43,281 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 05:57:43,281 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 05:57:43,281 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 05:57:43,281 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 05:57:43,281 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 05:57:43,281 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 05:57:43,282 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 05:57:43,282 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 05:57:43,282 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 05:57:43,282 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 05:57:43,282 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 05:57:43,282 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 05:57:43,282 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 05:57:43,282 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 05:57:43,282 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 05:57:43,283 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 05:57:43,283 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 05:57:43,283 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 05:57:43,283 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 05:57:43,283 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 05:57:43,283 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 05:57:43,283 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 05:57:43,283 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 05:57:43,283 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 05:57:43,283 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 05:57:43,283 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 05:57:43,284 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 05:57:43,284 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 05:57:43,284 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 05:57:43,284 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 05:57:43,284 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 05:57:43,284 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 05:57:43,284 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-01 05:57:43,442 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 05:57:43,455 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 05:57:43,457 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 05:57:43,458 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 05:57:43,458 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 05:57:43,459 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec3_product52.cil.c [2023-04-01 05:57:44,635 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 05:57:44,867 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 05:57:44,867 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product52.cil.c [2023-04-01 05:57:44,886 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08d61c9e6/6522bc5d9bfc4c9b8d0c1ce592a2eb39/FLAGc7f1f82b1 [2023-04-01 05:57:44,898 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08d61c9e6/6522bc5d9bfc4c9b8d0c1ce592a2eb39 [2023-04-01 05:57:44,903 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 05:57:44,904 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 05:57:44,905 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 05:57:44,905 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 05:57:44,911 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 05:57:44,911 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 05:57:44" (1/1) ... [2023-04-01 05:57:44,912 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34e61a76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:57:44, skipping insertion in model container [2023-04-01 05:57:44,913 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 05:57:44" (1/1) ... [2023-04-01 05:57:44,917 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 05:57:44,944 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 05:57:45,102 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_spec3_product52.cil.c[17256,17269] [2023-04-01 05:57:45,109 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 05:57:45,115 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 05:57:45,150 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product52.cil.c[17256,17269] [2023-04-01 05:57:45,156 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 05:57:45,167 INFO L208 MainTranslator]: Completed translation [2023-04-01 05:57:45,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:57:45 WrapperNode [2023-04-01 05:57:45,168 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 05:57:45,168 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 05:57:45,171 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 05:57:45,171 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 05:57:45,179 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:57:45" (1/1) ... [2023-04-01 05:57:45,179 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:57:45" (1/1) ... [2023-04-01 05:57:45,187 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:57:45" (1/1) ... [2023-04-01 05:57:45,187 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:57:45" (1/1) ... [2023-04-01 05:57:45,199 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:57:45" (1/1) ... [2023-04-01 05:57:45,210 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:57:45" (1/1) ... [2023-04-01 05:57:45,212 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:57:45" (1/1) ... [2023-04-01 05:57:45,214 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:57:45" (1/1) ... [2023-04-01 05:57:45,217 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 05:57:45,218 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 05:57:45,218 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 05:57:45,218 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 05:57:45,218 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:57:45" (1/1) ... [2023-04-01 05:57:45,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 05:57:45,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 05:57:45,244 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 05:57:45,256 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 05:57:45,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 05:57:45,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 05:57:45,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2023-04-01 05:57:45,273 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 05:57:45,273 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2023-04-01 05:57:45,273 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2023-04-01 05:57:45,273 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2023-04-01 05:57:45,273 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2023-04-01 05:57:45,273 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2023-04-01 05:57:45,273 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2023-04-01 05:57:45,273 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2023-04-01 05:57:45,273 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2023-04-01 05:57:45,273 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2023-04-01 05:57:45,273 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2023-04-01 05:57:45,273 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2023-04-01 05:57:45,273 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2023-04-01 05:57:45,274 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2023-04-01 05:57:45,274 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2023-04-01 05:57:45,274 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2023-04-01 05:57:45,274 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-04-01 05:57:45,274 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2023-04-01 05:57:45,274 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2023-04-01 05:57:45,274 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2023-04-01 05:57:45,274 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2023-04-01 05:57:45,274 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2023-04-01 05:57:45,274 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2023-04-01 05:57:45,274 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2023-04-01 05:57:45,274 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2023-04-01 05:57:45,274 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2023-04-01 05:57:45,275 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2023-04-01 05:57:45,275 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2023-04-01 05:57:45,275 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2023-04-01 05:57:45,275 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2023-04-01 05:57:45,275 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-04-01 05:57:45,275 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2023-04-01 05:57:45,275 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2023-04-01 05:57:45,275 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2023-04-01 05:57:45,275 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2023-04-01 05:57:45,275 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-04-01 05:57:45,275 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2023-04-01 05:57:45,275 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2023-04-01 05:57:45,275 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2023-04-01 05:57:45,276 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 05:57:45,276 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 05:57:45,276 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 05:57:45,276 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 05:57:45,276 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 05:57:45,276 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 05:57:45,276 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2023-04-01 05:57:45,276 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-04-01 05:57:45,276 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2023-04-01 05:57:45,276 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2023-04-01 05:57:45,276 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2023-04-01 05:57:45,276 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2023-04-01 05:57:45,276 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2023-04-01 05:57:45,277 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2023-04-01 05:57:45,277 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2023-04-01 05:57:45,277 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2023-04-01 05:57:45,277 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2023-04-01 05:57:45,277 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2023-04-01 05:57:45,277 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-01 05:57:45,277 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-01 05:57:45,277 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2023-04-01 05:57:45,277 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-01 05:57:45,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-01 05:57:45,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 05:57:45,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-01 05:57:45,277 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2023-04-01 05:57:45,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 05:57:45,278 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2023-04-01 05:57:45,278 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2023-04-01 05:57:45,278 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 05:57:45,278 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2023-04-01 05:57:45,278 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2023-04-01 05:57:45,278 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2023-04-01 05:57:45,278 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-04-01 05:57:45,278 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2023-04-01 05:57:45,278 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2023-04-01 05:57:45,278 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2023-04-01 05:57:45,278 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2023-04-01 05:57:45,279 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2023-04-01 05:57:45,279 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2023-04-01 05:57:45,279 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2023-04-01 05:57:45,279 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2023-04-01 05:57:45,279 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2023-04-01 05:57:45,279 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2023-04-01 05:57:45,279 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2023-04-01 05:57:45,279 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-04-01 05:57:45,279 INFO L130 BoogieDeclarations]: Found specification of procedure test [2023-04-01 05:57:45,279 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2023-04-01 05:57:45,279 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2023-04-01 05:57:45,279 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2023-04-01 05:57:45,279 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2023-04-01 05:57:45,280 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2023-04-01 05:57:45,280 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2023-04-01 05:57:45,280 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2023-04-01 05:57:45,280 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 05:57:45,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 05:57:45,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 05:57:45,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 05:57:45,377 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 05:57:45,379 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 05:57:45,867 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 05:57:45,944 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 05:57:45,944 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-04-01 05:57:45,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 05:57:45 BoogieIcfgContainer [2023-04-01 05:57:45,947 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 05:57:45,948 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 05:57:45,948 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 05:57:45,950 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 05:57:45,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 05:57:44" (1/3) ... [2023-04-01 05:57:45,951 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28fd54da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 05:57:45, skipping insertion in model container [2023-04-01 05:57:45,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:57:45" (2/3) ... [2023-04-01 05:57:45,951 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28fd54da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 05:57:45, skipping insertion in model container [2023-04-01 05:57:45,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 05:57:45" (3/3) ... [2023-04-01 05:57:45,952 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product52.cil.c [2023-04-01 05:57:45,965 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 05:57:45,965 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 05:57:45,999 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 05:57:46,004 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;@69aec760, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 05:57:46,004 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 05:57:46,008 INFO L276 IsEmpty]: Start isEmpty. Operand has 156 states, 72 states have (on average 1.2777777777777777) internal successors, (92), 87 states have internal predecessors, (92), 49 states have call successors, (49), 31 states have call predecessors, (49), 31 states have return successors, (49), 44 states have call predecessors, (49), 49 states have call successors, (49) [2023-04-01 05:57:46,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-04-01 05:57:46,015 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:57:46,015 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 05:57:46,016 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:57:46,019 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:57:46,020 INFO L85 PathProgramCache]: Analyzing trace with hash 319095318, now seen corresponding path program 1 times [2023-04-01 05:57:46,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:57:46,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882714333] [2023-04-01 05:57:46,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:57:46,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:57:46,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:57:46,183 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 05:57:46,183 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:57:46,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882714333] [2023-04-01 05:57:46,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882714333] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 05:57:46,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 05:57:46,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-04-01 05:57:46,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593388060] [2023-04-01 05:57:46,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 05:57:46,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-04-01 05:57:46,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:57:46,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-04-01 05:57:46,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-01 05:57:46,228 INFO L87 Difference]: Start difference. First operand has 156 states, 72 states have (on average 1.2777777777777777) internal successors, (92), 87 states have internal predecessors, (92), 49 states have call successors, (49), 31 states have call predecessors, (49), 31 states have return successors, (49), 44 states have call predecessors, (49), 49 states have call successors, (49) Second operand has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-04-01 05:57:46,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:57:46,288 INFO L93 Difference]: Finished difference Result 241 states and 292 transitions. [2023-04-01 05:57:46,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-04-01 05:57:46,291 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 47 [2023-04-01 05:57:46,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:57:46,299 INFO L225 Difference]: With dead ends: 241 [2023-04-01 05:57:46,299 INFO L226 Difference]: Without dead ends: 121 [2023-04-01 05:57:46,303 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 05:57:46,310 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 05:57:46,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 132 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 05:57:46,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2023-04-01 05:57:46,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2023-04-01 05:57:46,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 62 states have (on average 1.2419354838709677) internal successors, (77), 74 states have internal predecessors, (77), 34 states have call successors, (34), 29 states have call predecessors, (34), 24 states have return successors, (29), 24 states have call predecessors, (29), 29 states have call successors, (29) [2023-04-01 05:57:46,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 140 transitions. [2023-04-01 05:57:46,344 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 140 transitions. Word has length 47 [2023-04-01 05:57:46,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:57:46,345 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 140 transitions. [2023-04-01 05:57:46,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-04-01 05:57:46,345 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 140 transitions. [2023-04-01 05:57:46,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-04-01 05:57:46,347 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:57:46,347 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:57:46,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 05:57:46,347 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:57:46,348 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:57:46,348 INFO L85 PathProgramCache]: Analyzing trace with hash -2054106439, now seen corresponding path program 1 times [2023-04-01 05:57:46,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:57:46,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115544383] [2023-04-01 05:57:46,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:57:46,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:57:46,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:57:46,415 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 05:57:46,415 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:57:46,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115544383] [2023-04-01 05:57:46,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115544383] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 05:57:46,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 05:57:46,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 05:57:46,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34697295] [2023-04-01 05:57:46,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 05:57:46,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 05:57:46,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:57:46,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 05:57:46,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 05:57:46,418 INFO L87 Difference]: Start difference. First operand 121 states and 140 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-04-01 05:57:46,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:57:46,458 INFO L93 Difference]: Finished difference Result 189 states and 217 transitions. [2023-04-01 05:57:46,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 05:57:46,459 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 48 [2023-04-01 05:57:46,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:57:46,460 INFO L225 Difference]: With dead ends: 189 [2023-04-01 05:57:46,460 INFO L226 Difference]: Without dead ends: 113 [2023-04-01 05:57:46,461 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 05:57:46,462 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 11 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 05:57:46,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 207 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 05:57:46,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2023-04-01 05:57:46,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2023-04-01 05:57:46,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 57 states have (on average 1.2456140350877194) internal successors, (71), 69 states have internal predecessors, (71), 31 states have call successors, (31), 28 states have call predecessors, (31), 24 states have return successors, (27), 22 states have call predecessors, (27), 27 states have call successors, (27) [2023-04-01 05:57:46,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 129 transitions. [2023-04-01 05:57:46,471 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 129 transitions. Word has length 48 [2023-04-01 05:57:46,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:57:46,471 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 129 transitions. [2023-04-01 05:57:46,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-04-01 05:57:46,471 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 129 transitions. [2023-04-01 05:57:46,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-04-01 05:57:46,472 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:57:46,472 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:57:46,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 05:57:46,473 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:57:46,473 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:57:46,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1970766566, now seen corresponding path program 1 times [2023-04-01 05:57:46,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:57:46,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094832530] [2023-04-01 05:57:46,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:57:46,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:57:46,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:57:46,677 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 05:57:46,677 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:57:46,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094832530] [2023-04-01 05:57:46,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094832530] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 05:57:46,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 05:57:46,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 05:57:46,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040878829] [2023-04-01 05:57:46,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 05:57:46,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 05:57:46,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:57:46,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 05:57:46,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-04-01 05:57:46,679 INFO L87 Difference]: Start difference. First operand 113 states and 129 transitions. Second operand has 7 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 4 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-04-01 05:57:46,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:57:46,935 INFO L93 Difference]: Finished difference Result 345 states and 409 transitions. [2023-04-01 05:57:46,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 05:57:46,935 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 4 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 52 [2023-04-01 05:57:46,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:57:46,937 INFO L225 Difference]: With dead ends: 345 [2023-04-01 05:57:46,938 INFO L226 Difference]: Without dead ends: 254 [2023-04-01 05:57:46,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-04-01 05:57:46,939 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 208 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 05:57:46,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 559 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 05:57:46,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2023-04-01 05:57:46,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 242. [2023-04-01 05:57:46,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 129 states have (on average 1.2790697674418605) internal successors, (165), 152 states have internal predecessors, (165), 62 states have call successors, (62), 56 states have call predecessors, (62), 50 states have return successors, (59), 46 states have call predecessors, (59), 58 states have call successors, (59) [2023-04-01 05:57:46,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 286 transitions. [2023-04-01 05:57:46,961 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 286 transitions. Word has length 52 [2023-04-01 05:57:46,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:57:46,961 INFO L495 AbstractCegarLoop]: Abstraction has 242 states and 286 transitions. [2023-04-01 05:57:46,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 4 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-04-01 05:57:46,962 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 286 transitions. [2023-04-01 05:57:46,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-04-01 05:57:46,963 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:57:46,963 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:57:46,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 05:57:46,964 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:57:46,964 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:57:46,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1971227924, now seen corresponding path program 1 times [2023-04-01 05:57:46,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:57:46,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321279887] [2023-04-01 05:57:46,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:57:46,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:57:46,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:57:47,114 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 05:57:47,114 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:57:47,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321279887] [2023-04-01 05:57:47,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321279887] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 05:57:47,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 05:57:47,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 05:57:47,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570591558] [2023-04-01 05:57:47,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 05:57:47,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-01 05:57:47,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:57:47,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-01 05:57:47,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-01 05:57:47,115 INFO L87 Difference]: Start difference. First operand 242 states and 286 transitions. Second operand has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-04-01 05:57:47,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:57:47,241 INFO L93 Difference]: Finished difference Result 670 states and 817 transitions. [2023-04-01 05:57:47,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-01 05:57:47,241 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 56 [2023-04-01 05:57:47,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:57:47,244 INFO L225 Difference]: With dead ends: 670 [2023-04-01 05:57:47,244 INFO L226 Difference]: Without dead ends: 450 [2023-04-01 05:57:47,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-04-01 05:57:47,245 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 87 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 05:57:47,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 485 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 05:57:47,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2023-04-01 05:57:47,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 426. [2023-04-01 05:57:47,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 233 states have (on average 1.2832618025751072) internal successors, (299), 272 states have internal predecessors, (299), 106 states have call successors, (106), 94 states have call predecessors, (106), 86 states have return successors, (108), 78 states have call predecessors, (108), 102 states have call successors, (108) [2023-04-01 05:57:47,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 513 transitions. [2023-04-01 05:57:47,290 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 513 transitions. Word has length 56 [2023-04-01 05:57:47,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:57:47,291 INFO L495 AbstractCegarLoop]: Abstraction has 426 states and 513 transitions. [2023-04-01 05:57:47,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-04-01 05:57:47,291 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 513 transitions. [2023-04-01 05:57:47,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-04-01 05:57:47,293 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:57:47,293 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:57:47,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 05:57:47,293 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:57:47,294 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:57:47,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1197394387, now seen corresponding path program 1 times [2023-04-01 05:57:47,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:57:47,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513924056] [2023-04-01 05:57:47,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:57:47,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:57:47,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-04-01 05:57:47,323 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-04-01 05:57:47,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-04-01 05:57:47,389 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-04-01 05:57:47,389 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-04-01 05:57:47,390 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-01 05:57:47,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-01 05:57:47,393 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-04-01 05:57:47,395 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-01 05:57:47,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.04 05:57:47 BoogieIcfgContainer [2023-04-01 05:57:47,465 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-01 05:57:47,466 INFO L158 Benchmark]: Toolchain (without parser) took 2561.74ms. Allocated memory was 194.0MB in the beginning and 233.8MB in the end (delta: 39.8MB). Free memory was 149.4MB in the beginning and 85.8MB in the end (delta: 63.6MB). Peak memory consumption was 104.2MB. Max. memory is 8.0GB. [2023-04-01 05:57:47,466 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 194.0MB. Free memory is still 149.2MB. There was no memory consumed. Max. memory is 8.0GB. [2023-04-01 05:57:47,466 INFO L158 Benchmark]: CACSL2BoogieTranslator took 263.25ms. Allocated memory is still 194.0MB. Free memory was 149.4MB in the beginning and 130.5MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2023-04-01 05:57:47,466 INFO L158 Benchmark]: Boogie Preprocessor took 48.76ms. Allocated memory is still 194.0MB. Free memory was 130.5MB in the beginning and 127.1MB in the end (delta: 3.4MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-04-01 05:57:47,467 INFO L158 Benchmark]: RCFGBuilder took 729.15ms. Allocated memory is still 194.0MB. Free memory was 126.7MB in the beginning and 124.6MB in the end (delta: 2.2MB). Peak memory consumption was 26.1MB. Max. memory is 8.0GB. [2023-04-01 05:57:47,467 INFO L158 Benchmark]: TraceAbstraction took 1517.33ms. Allocated memory was 194.0MB in the beginning and 233.8MB in the end (delta: 39.8MB). Free memory was 123.5MB in the beginning and 85.8MB in the end (delta: 37.7MB). Peak memory consumption was 77.1MB. Max. memory is 8.0GB. [2023-04-01 05:57:47,468 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 194.0MB. Free memory is still 149.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 263.25ms. Allocated memory is still 194.0MB. Free memory was 149.4MB in the beginning and 130.5MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * Boogie Preprocessor took 48.76ms. Allocated memory is still 194.0MB. Free memory was 130.5MB in the beginning and 127.1MB in the end (delta: 3.4MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 729.15ms. Allocated memory is still 194.0MB. Free memory was 126.7MB in the beginning and 124.6MB in the end (delta: 2.2MB). Peak memory consumption was 26.1MB. Max. memory is 8.0GB. * TraceAbstraction took 1517.33ms. Allocated memory was 194.0MB in the beginning and 233.8MB in the end (delta: 39.8MB). Free memory was 123.5MB in the beginning and 85.8MB in the end (delta: 37.7MB). Peak memory consumption was 77.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 863]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L94] int waterLevel = 1; [L95] int methaneLevelCritical = 0; [L366] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L569] int pumpRunning = 0; [L570] int systemActive = 1; [L906] int cleanupTimeShifts = 4; [L979] int retValue_acc ; [L980] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L984] FCALL select_helpers() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L985] FCALL select_features() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L986] CALL, EXPR valid_product() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L897] int retValue_acc ; [L900] retValue_acc = 1 [L901] return (retValue_acc); [L986] RET, EXPR valid_product() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, valid_product()=1, waterLevel=1] [L986] tmp = valid_product() [L988] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L990] FCALL setup() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L991] CALL runTest() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L973] CALL test() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L791] int splverifierCounter ; [L792] int tmp ; [L793] int tmp___0 ; [L794] int tmp___1 ; [L795] int tmp___2 ; [L798] splverifierCounter = 0 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L800] COND TRUE 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L802] COND TRUE splverifierCounter < 4 [L808] tmp = __VERIFIER_nondet_int() [L810] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L812] CALL waterRise() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L112] COND TRUE waterLevel < 2 [L113] waterLevel = waterLevel + 1 [L812] RET waterRise() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2] [L818] tmp___0 = __VERIFIER_nondet_int() [L820] COND FALSE !(\read(tmp___0)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, waterLevel=2] [L828] tmp___2 = __VERIFIER_nondet_int() [L830] COND FALSE !(\read(tmp___2)) [L836] tmp___1 = __VERIFIER_nondet_int() [L838] COND TRUE \read(tmp___1) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___1=1, tmp___2=0, waterLevel=2] [L840] CALL stopSystem() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L769] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L776] systemActive = 0 [L840] RET stopSystem() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=0, tmp=1, tmp___0=0, tmp___1=1, tmp___2=0, waterLevel=2] [L847] CALL timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L576] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L583] COND FALSE !(\read(systemActive)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L591] CALL __utac_acc__Specification3_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L55] int tmp ; [L56] int tmp___0 ; [L57] int tmp___1 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L61] CALL, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L133] int retValue_acc ; [L136] retValue_acc = methaneLevelCritical [L137] return (retValue_acc); [L61] RET, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=0, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L61] tmp = isMethaneLevelCritical() [L63] COND FALSE !(\read(tmp)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, tmp=0, waterLevel=2] [L67] CALL, EXPR getWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L165] int retValue_acc ; [L168] retValue_acc = waterLevel [L169] return (retValue_acc); [L67] RET, EXPR getWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, getWaterLevel()=2, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, tmp=0, waterLevel=2] [L67] tmp___0 = getWaterLevel() [L69] COND TRUE tmp___0 == 2 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, tmp=0, tmp___0=2, waterLevel=2] [L71] CALL, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L683] int retValue_acc ; [L686] retValue_acc = pumpRunning [L687] return (retValue_acc); [L71] RET, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isPumpRunning()=0, methaneLevelCritical=0, pumpRunning=0, systemActive=0, tmp=0, tmp___0=2, waterLevel=2] [L71] tmp___1 = isPumpRunning() [L73] COND FALSE !(\read(tmp___1)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, tmp=0, tmp___0=2, tmp___1=0, waterLevel=2] [L77] CALL __automaton_fail() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L863] reach_error() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 43 procedures, 197 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.4s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 313 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 306 mSDsluCounter, 1383 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 895 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 483 IncrementalHoareTripleChecker+Invalid, 491 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 488 mSDtfsCounter, 483 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=426occurred in iteration=4, InterpolantAutomatonStates: 20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 36 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 262 NumberOfCodeBlocks, 262 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 199 ConstructedInterpolants, 0 QuantifiedInterpolants, 364 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-04-01 05:57:47,486 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...