/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_product18.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-03 01:02:16,212 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-03 01:02:16,214 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-03 01:02:16,252 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-03 01:02:16,253 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-03 01:02:16,255 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-03 01:02:16,258 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-03 01:02:16,260 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-03 01:02:16,261 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-03 01:02:16,266 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-03 01:02:16,267 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-03 01:02:16,269 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-03 01:02:16,269 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-03 01:02:16,271 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-03 01:02:16,272 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-03 01:02:16,273 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-03 01:02:16,274 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-03 01:02:16,274 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-03 01:02:16,276 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-03 01:02:16,281 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-03 01:02:16,282 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-03 01:02:16,283 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-03 01:02:16,283 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-03 01:02:16,285 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-03 01:02:16,292 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-03 01:02:16,293 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-03 01:02:16,293 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-03 01:02:16,294 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-03 01:02:16,294 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-03 01:02:16,295 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-03 01:02:16,295 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-03 01:02:16,296 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-03 01:02:16,297 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-03 01:02:16,297 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-03 01:02:16,298 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-03 01:02:16,298 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-03 01:02:16,298 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-03 01:02:16,299 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-03 01:02:16,299 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-03 01:02:16,299 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-03 01:02:16,300 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-03 01:02:16,301 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 [2023-04-03 01:02:16,328 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-03 01:02:16,329 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-03 01:02:16,329 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-03 01:02:16,329 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-03 01:02:16,330 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-03 01:02:16,330 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-03 01:02:16,330 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-03 01:02:16,330 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-03 01:02:16,330 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-03 01:02:16,331 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-03 01:02:16,331 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-03 01:02:16,331 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-03 01:02:16,331 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-03 01:02:16,332 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-03 01:02:16,332 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-03 01:02:16,332 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-03 01:02:16,332 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-03 01:02:16,332 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-03 01:02:16,333 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-03 01:02:16,333 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-03 01:02:16,333 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-03 01:02:16,333 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-03 01:02:16,333 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-03 01:02:16,333 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-03 01:02:16,333 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-03 01:02:16,333 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-03 01:02:16,333 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-03 01:02:16,334 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-03 01:02:16,334 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-03 01:02:16,334 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-03 01:02:16,334 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-03 01:02:16,334 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-03 01:02:16,334 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 01:02:16,334 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-03 01:02:16,334 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-03 01:02:16,335 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-03 01:02:16,335 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-03 01:02:16,335 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-03 01:02:16,335 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-03 01:02:16,335 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-03 01:02:16,335 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-03 01:02:16,335 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-03 01:02:16,564 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-03 01:02:16,583 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-03 01:02:16,585 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-03 01:02:16,585 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-03 01:02:16,586 INFO L275 PluginConnector]: CDTParser initialized [2023-04-03 01:02:16,587 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec3_product18.cil.c [2023-04-03 01:02:17,622 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-03 01:02:17,842 INFO L351 CDTParser]: Found 1 translation units. [2023-04-03 01:02:17,842 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product18.cil.c [2023-04-03 01:02:17,856 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4569cdfd/54702d1a8cfd4725a29ae340bd48cf92/FLAGa1141cb20 [2023-04-03 01:02:17,871 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4569cdfd/54702d1a8cfd4725a29ae340bd48cf92 [2023-04-03 01:02:17,873 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-03 01:02:17,875 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-03 01:02:17,878 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-03 01:02:17,878 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-03 01:02:17,880 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-03 01:02:17,881 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 01:02:17" (1/1) ... [2023-04-03 01:02:17,882 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f39f971 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:02:17, skipping insertion in model container [2023-04-03 01:02:17,882 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 01:02:17" (1/1) ... [2023-04-03 01:02:17,888 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-03 01:02:17,931 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-03 01:02:18,146 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_product18.cil.c[17788,17801] [2023-04-03 01:02:18,150 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 01:02:18,159 INFO L203 MainTranslator]: Completed pre-run [2023-04-03 01:02:18,216 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_product18.cil.c[17788,17801] [2023-04-03 01:02:18,216 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 01:02:18,231 INFO L208 MainTranslator]: Completed translation [2023-04-03 01:02:18,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:02:18 WrapperNode [2023-04-03 01:02:18,231 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-03 01:02:18,232 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-03 01:02:18,232 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-03 01:02:18,233 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-03 01:02:18,243 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:02:18" (1/1) ... [2023-04-03 01:02:18,243 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:02:18" (1/1) ... [2023-04-03 01:02:18,255 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:02:18" (1/1) ... [2023-04-03 01:02:18,256 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:02:18" (1/1) ... [2023-04-03 01:02:18,290 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:02:18" (1/1) ... [2023-04-03 01:02:18,295 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:02:18" (1/1) ... [2023-04-03 01:02:18,299 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:02:18" (1/1) ... [2023-04-03 01:02:18,301 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:02:18" (1/1) ... [2023-04-03 01:02:18,306 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-03 01:02:18,307 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-03 01:02:18,307 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-03 01:02:18,307 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-03 01:02:18,308 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:02:18" (1/1) ... [2023-04-03 01:02:18,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 01:02:18,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 01:02:18,335 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) [2023-04-03 01:02:18,337 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 [2023-04-03 01:02:18,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-03 01:02:18,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-03 01:02:18,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2023-04-03 01:02:18,371 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-03 01:02:18,371 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-04-03 01:02:18,372 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2023-04-03 01:02:18,372 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2023-04-03 01:02:18,372 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2023-04-03 01:02:18,372 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-03 01:02:18,372 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2023-04-03 01:02:18,372 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2023-04-03 01:02:18,372 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2023-04-03 01:02:18,373 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2023-04-03 01:02:18,373 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2023-04-03 01:02:18,373 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2023-04-03 01:02:18,373 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2023-04-03 01:02:18,373 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2023-04-03 01:02:18,373 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2023-04-03 01:02:18,373 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2023-04-03 01:02:18,373 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2023-04-03 01:02:18,374 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2023-04-03 01:02:18,374 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2023-04-03 01:02:18,374 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-04-03 01:02:18,374 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2023-04-03 01:02:18,374 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2023-04-03 01:02:18,374 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2023-04-03 01:02:18,374 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2023-04-03 01:02:18,375 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2023-04-03 01:02:18,375 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2023-04-03 01:02:18,375 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2023-04-03 01:02:18,375 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2023-04-03 01:02:18,375 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2023-04-03 01:02:18,375 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2023-04-03 01:02:18,375 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2023-04-03 01:02:18,376 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2023-04-03 01:02:18,376 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2023-04-03 01:02:18,376 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2023-04-03 01:02:18,376 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2023-04-03 01:02:18,376 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-04-03 01:02:18,376 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-03 01:02:18,376 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-03 01:02:18,376 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-03 01:02:18,377 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-03 01:02:18,377 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-03 01:02:18,377 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2023-04-03 01:02:18,377 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-04-03 01:02:18,377 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-04-03 01:02:18,377 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2023-04-03 01:02:18,377 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2023-04-03 01:02:18,378 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2023-04-03 01:02:18,378 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2023-04-03 01:02:18,378 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2023-04-03 01:02:18,378 INFO L130 BoogieDeclarations]: Found specification of procedure test [2023-04-03 01:02:18,378 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2023-04-03 01:02:18,378 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2023-04-03 01:02:18,378 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2023-04-03 01:02:18,379 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2023-04-03 01:02:18,379 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-03 01:02:18,379 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2023-04-03 01:02:18,379 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2023-04-03 01:02:18,379 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2023-04-03 01:02:18,379 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2023-04-03 01:02:18,379 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2023-04-03 01:02:18,380 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-03 01:02:18,380 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-03 01:02:18,380 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2023-04-03 01:02:18,380 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-03 01:02:18,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-03 01:02:18,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-03 01:02:18,380 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-03 01:02:18,380 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2023-04-03 01:02:18,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-03 01:02:18,381 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2023-04-03 01:02:18,381 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2023-04-03 01:02:18,381 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-03 01:02:18,381 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2023-04-03 01:02:18,381 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2023-04-03 01:02:18,381 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2023-04-03 01:02:18,381 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2023-04-03 01:02:18,382 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2023-04-03 01:02:18,382 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2023-04-03 01:02:18,382 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2023-04-03 01:02:18,382 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2023-04-03 01:02:18,382 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2023-04-03 01:02:18,382 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2023-04-03 01:02:18,382 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2023-04-03 01:02:18,382 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2023-04-03 01:02:18,383 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2023-04-03 01:02:18,383 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-04-03 01:02:18,383 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-03 01:02:18,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-03 01:02:18,383 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-03 01:02:18,505 INFO L236 CfgBuilder]: Building ICFG [2023-04-03 01:02:18,507 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-03 01:02:19,010 INFO L277 CfgBuilder]: Performing block encoding [2023-04-03 01:02:19,140 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-03 01:02:19,140 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-04-03 01:02:19,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 01:02:19 BoogieIcfgContainer [2023-04-03 01:02:19,143 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-03 01:02:19,145 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-03 01:02:19,145 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-03 01:02:19,148 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-03 01:02:19,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.04 01:02:17" (1/3) ... [2023-04-03 01:02:19,149 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2524046e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 01:02:19, skipping insertion in model container [2023-04-03 01:02:19,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:02:18" (2/3) ... [2023-04-03 01:02:19,149 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2524046e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 01:02:19, skipping insertion in model container [2023-04-03 01:02:19,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 01:02:19" (3/3) ... [2023-04-03 01:02:19,152 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product18.cil.c [2023-04-03 01:02:19,169 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-03 01:02:19,169 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-03 01:02:19,223 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-03 01:02:19,229 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;@292ec4db, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-03 01:02:19,229 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-03 01:02:19,233 INFO L276 IsEmpty]: Start isEmpty. Operand has 132 states, 60 states have (on average 1.2666666666666666) internal successors, (76), 71 states have internal predecessors, (76), 42 states have call successors, (42), 26 states have call predecessors, (42), 26 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-04-03 01:02:19,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-04-03 01:02:19,243 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:02:19,244 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] [2023-04-03 01:02:19,245 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:02:19,251 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:02:19,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1572908704, now seen corresponding path program 1 times [2023-04-03 01:02:19,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:02:19,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372765983] [2023-04-03 01:02:19,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:02:19,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:02:19,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:02:19,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 01:02:19,496 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:02:19,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372765983] [2023-04-03 01:02:19,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372765983] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:02:19,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:02:19,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-04-03 01:02:19,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64690753] [2023-04-03 01:02:19,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:02:19,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-04-03 01:02:19,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:02:19,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-04-03 01:02:19,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-03 01:02:19,545 INFO L87 Difference]: Start difference. First operand has 132 states, 60 states have (on average 1.2666666666666666) internal successors, (76), 71 states have internal predecessors, (76), 42 states have call successors, (42), 26 states have call predecessors, (42), 26 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) 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) [2023-04-03 01:02:19,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:02:19,641 INFO L93 Difference]: Finished difference Result 193 states and 232 transitions. [2023-04-03 01:02:19,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-04-03 01:02:19,644 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 [2023-04-03 01:02:19,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:02:19,650 INFO L225 Difference]: With dead ends: 193 [2023-04-03 01:02:19,651 INFO L226 Difference]: Without dead ends: 97 [2023-04-03 01:02:19,653 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 [2023-04-03 01:02:19,656 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-03 01:02:19,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 105 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-03 01:02:19,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2023-04-03 01:02:19,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2023-04-03 01:02:19,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 50 states have (on average 1.22) internal successors, (61), 58 states have internal predecessors, (61), 27 states have call successors, (27), 24 states have call predecessors, (27), 19 states have return successors, (22), 20 states have call predecessors, (22), 22 states have call successors, (22) [2023-04-03 01:02:19,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 110 transitions. [2023-04-03 01:02:19,694 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 110 transitions. Word has length 47 [2023-04-03 01:02:19,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:02:19,694 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 110 transitions. [2023-04-03 01:02:19,694 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) [2023-04-03 01:02:19,695 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 110 transitions. [2023-04-03 01:02:19,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-04-03 01:02:19,696 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:02:19,697 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] [2023-04-03 01:02:19,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-03 01:02:19,697 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:02:19,697 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:02:19,697 INFO L85 PathProgramCache]: Analyzing trace with hash -242383615, now seen corresponding path program 1 times [2023-04-03 01:02:19,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:02:19,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629586363] [2023-04-03 01:02:19,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:02:19,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:02:19,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:02:19,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 01:02:19,782 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:02:19,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629586363] [2023-04-03 01:02:19,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629586363] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:02:19,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:02:19,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 01:02:19,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867969930] [2023-04-03 01:02:19,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:02:19,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 01:02:19,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:02:19,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 01:02:19,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 01:02:19,785 INFO L87 Difference]: Start difference. First operand 97 states and 110 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) [2023-04-03 01:02:19,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:02:19,824 INFO L93 Difference]: Finished difference Result 147 states and 166 transitions. [2023-04-03 01:02:19,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 01:02:19,825 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 [2023-04-03 01:02:19,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:02:19,827 INFO L225 Difference]: With dead ends: 147 [2023-04-03 01:02:19,827 INFO L226 Difference]: Without dead ends: 89 [2023-04-03 01:02:19,831 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 [2023-04-03 01:02:19,832 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 9 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-03 01:02:19,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 157 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-03 01:02:19,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-04-03 01:02:19,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2023-04-03 01:02:19,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 45 states have (on average 1.2222222222222223) internal successors, (55), 53 states have internal predecessors, (55), 24 states have call successors, (24), 23 states have call predecessors, (24), 19 states have return successors, (20), 18 states have call predecessors, (20), 20 states have call successors, (20) [2023-04-03 01:02:19,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 99 transitions. [2023-04-03 01:02:19,848 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 99 transitions. Word has length 48 [2023-04-03 01:02:19,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:02:19,848 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 99 transitions. [2023-04-03 01:02:19,848 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) [2023-04-03 01:02:19,848 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 99 transitions. [2023-04-03 01:02:19,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-04-03 01:02:19,870 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:02:19,870 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] [2023-04-03 01:02:19,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-03 01:02:19,870 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:02:19,871 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:02:19,871 INFO L85 PathProgramCache]: Analyzing trace with hash -583774965, now seen corresponding path program 1 times [2023-04-03 01:02:19,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:02:19,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043191397] [2023-04-03 01:02:19,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:02:19,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:02:19,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:02:20,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 01:02:20,090 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:02:20,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043191397] [2023-04-03 01:02:20,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043191397] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:02:20,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:02:20,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-03 01:02:20,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575968854] [2023-04-03 01:02:20,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:02:20,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-03 01:02:20,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:02:20,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-03 01:02:20,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-04-03 01:02:20,095 INFO L87 Difference]: Start difference. First operand 89 states and 99 transitions. Second operand has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 4 states have call successors, (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) [2023-04-03 01:02:20,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:02:20,314 INFO L93 Difference]: Finished difference Result 156 states and 177 transitions. [2023-04-03 01:02:20,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-03 01:02:20,315 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 4 states have call successors, (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 51 [2023-04-03 01:02:20,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:02:20,317 INFO L225 Difference]: With dead ends: 156 [2023-04-03 01:02:20,317 INFO L226 Difference]: Without dead ends: 89 [2023-04-03 01:02:20,317 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-04-03 01:02:20,319 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 88 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-03 01:02:20,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 236 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-03 01:02:20,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-04-03 01:02:20,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2023-04-03 01:02:20,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 45 states have (on average 1.2) internal successors, (54), 52 states have internal predecessors, (54), 24 states have call successors, (24), 23 states have call predecessors, (24), 19 states have return successors, (20), 18 states have call predecessors, (20), 20 states have call successors, (20) [2023-04-03 01:02:20,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 98 transitions. [2023-04-03 01:02:20,339 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 98 transitions. Word has length 51 [2023-04-03 01:02:20,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:02:20,340 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 98 transitions. [2023-04-03 01:02:20,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 4 states have call successors, (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) [2023-04-03 01:02:20,345 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 98 transitions. [2023-04-03 01:02:20,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-04-03 01:02:20,350 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:02:20,350 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] [2023-04-03 01:02:20,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-03 01:02:20,351 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:02:20,351 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:02:20,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1356676156, now seen corresponding path program 1 times [2023-04-03 01:02:20,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:02:20,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051833338] [2023-04-03 01:02:20,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:02:20,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:02:20,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:02:20,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 01:02:20,569 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:02:20,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051833338] [2023-04-03 01:02:20,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051833338] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:02:20,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:02:20,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-03 01:02:20,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931650402] [2023-04-03 01:02:20,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:02:20,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-03 01:02:20,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:02:20,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-03 01:02:20,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-03 01:02:20,571 INFO L87 Difference]: Start difference. First operand 89 states and 98 transitions. Second operand has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2023-04-03 01:02:20,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:02:20,732 INFO L93 Difference]: Finished difference Result 215 states and 247 transitions. [2023-04-03 01:02:20,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-03 01:02:20,733 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 59 [2023-04-03 01:02:20,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:02:20,742 INFO L225 Difference]: With dead ends: 215 [2023-04-03 01:02:20,742 INFO L226 Difference]: Without dead ends: 148 [2023-04-03 01:02:20,743 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 [2023-04-03 01:02:20,752 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 56 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 01:02:20,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 357 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 01:02:20,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2023-04-03 01:02:20,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 142. [2023-04-03 01:02:20,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 75 states have (on average 1.2133333333333334) internal successors, (91), 86 states have internal predecessors, (91), 36 states have call successors, (36), 34 states have call predecessors, (36), 30 states have return successors, (33), 28 states have call predecessors, (33), 32 states have call successors, (33) [2023-04-03 01:02:20,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 160 transitions. [2023-04-03 01:02:20,785 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 160 transitions. Word has length 59 [2023-04-03 01:02:20,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:02:20,786 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 160 transitions. [2023-04-03 01:02:20,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2023-04-03 01:02:20,787 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 160 transitions. [2023-04-03 01:02:20,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-04-03 01:02:20,789 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:02:20,790 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 01:02:20,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-03 01:02:20,790 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:02:20,790 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:02:20,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1598408457, now seen corresponding path program 1 times [2023-04-03 01:02:20,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:02:20,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914931327] [2023-04-03 01:02:20,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:02:20,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:02:20,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-04-03 01:02:20,821 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-04-03 01:02:20,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-04-03 01:02:20,874 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-04-03 01:02:20,875 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-04-03 01:02:20,876 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-03 01:02:20,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-03 01:02:20,880 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-04-03 01:02:20,884 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-03 01:02:20,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.04 01:02:20 BoogieIcfgContainer [2023-04-03 01:02:20,943 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-03 01:02:20,943 INFO L158 Benchmark]: Toolchain (without parser) took 3068.81ms. Allocated memory is still 278.9MB. Free memory was 234.2MB in the beginning and 135.1MB in the end (delta: 99.1MB). Peak memory consumption was 99.6MB. Max. memory is 8.0GB. [2023-04-03 01:02:20,944 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 187.7MB. Free memory is still 136.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-04-03 01:02:20,944 INFO L158 Benchmark]: CACSL2BoogieTranslator took 354.21ms. Allocated memory is still 278.9MB. Free memory was 233.7MB in the beginning and 215.9MB in the end (delta: 17.8MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2023-04-03 01:02:20,946 INFO L158 Benchmark]: Boogie Preprocessor took 73.63ms. Allocated memory is still 278.9MB. Free memory was 215.9MB in the beginning and 212.2MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-04-03 01:02:20,946 INFO L158 Benchmark]: RCFGBuilder took 836.14ms. Allocated memory is still 278.9MB. Free memory was 212.2MB in the beginning and 154.0MB in the end (delta: 58.2MB). Peak memory consumption was 57.7MB. Max. memory is 8.0GB. [2023-04-03 01:02:20,947 INFO L158 Benchmark]: TraceAbstraction took 1797.61ms. Allocated memory is still 278.9MB. Free memory was 153.0MB in the beginning and 135.1MB in the end (delta: 17.8MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2023-04-03 01:02:20,948 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 187.7MB. Free memory is still 136.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 354.21ms. Allocated memory is still 278.9MB. Free memory was 233.7MB in the beginning and 215.9MB in the end (delta: 17.8MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * Boogie Preprocessor took 73.63ms. Allocated memory is still 278.9MB. Free memory was 215.9MB in the beginning and 212.2MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 836.14ms. Allocated memory is still 278.9MB. Free memory was 212.2MB in the beginning and 154.0MB in the end (delta: 58.2MB). Peak memory consumption was 57.7MB. Max. memory is 8.0GB. * TraceAbstraction took 1797.61ms. Allocated memory is still 278.9MB. Free memory was 153.0MB in the beginning and 135.1MB in the end (delta: 17.8MB). Peak memory consumption was 18.9MB. 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: 920]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L50] int cleanupTimeShifts = 4; [L159] int waterLevel = 1; [L160] int methaneLevelCritical = 0; [L417] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L618] int pumpRunning = 0; [L619] int systemActive = 1; [L131] int retValue_acc ; [L132] 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] [L136] 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] [L137] 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] [L138] 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] [L872] int retValue_acc ; [L875] retValue_acc = 1 [L876] return (retValue_acc); [L138] 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] [L138] tmp = valid_product() [L140] 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] [L142] 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] [L143] 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] [L122] 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] [L780] int splverifierCounter ; [L781] int tmp ; [L782] int tmp___0 ; [L783] int tmp___1 ; [L784] int tmp___2 ; [L787] 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] [L789] 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] [L791] COND TRUE splverifierCounter < 4 [L797] tmp = __VERIFIER_nondet_int() [L799] 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] [L801] 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] [L177] COND TRUE waterLevel < 2 [L178] waterLevel = waterLevel + 1 [L801] 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] [L807] tmp___0 = __VERIFIER_nondet_int() [L809] 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] [L817] tmp___2 = __VERIFIER_nondet_int() [L819] COND FALSE !(\read(tmp___2)) [L825] tmp___1 = __VERIFIER_nondet_int() [L827] COND FALSE !(\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=0, tmp___2=0, waterLevel=2] [L834] 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=1, waterLevel=2] [L626] 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=1, waterLevel=2] [L633] COND TRUE \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=1, waterLevel=2] [L635] CALL processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L655] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L658] 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=1, waterLevel=2] [L673] FCALL processEnvironment__wrappee__base() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L635] RET processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L641] 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=1, waterLevel=2] [L883] int tmp ; [L884] int tmp___0 ; [L885] 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=1, waterLevel=2] [L889] 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=1, waterLevel=2] [L198] int retValue_acc ; [L201] retValue_acc = methaneLevelCritical [L202] return (retValue_acc); [L889] 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=1, waterLevel=2] [L889] tmp = isMethaneLevelCritical() [L891] 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=1, tmp=0, waterLevel=2] [L895] 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=1, waterLevel=2] [L230] int retValue_acc ; [L233] retValue_acc = waterLevel [L234] return (retValue_acc); [L895] 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=1, tmp=0, waterLevel=2] [L895] tmp___0 = getWaterLevel() [L897] 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=1, tmp=0, tmp___0=2, waterLevel=2] [L899] 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=1, waterLevel=2] [L707] int retValue_acc ; [L710] retValue_acc = pumpRunning [L711] return (retValue_acc); [L899] 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=1, tmp=0, tmp___0=2, waterLevel=2] [L899] tmp___1 = isPumpRunning() [L901] 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=1, tmp=0, tmp___0=2, tmp___1=0, waterLevel=2] [L905] 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=1, waterLevel=2] [L920] 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=1, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 175 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.7s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 159 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 153 mSDsluCounter, 855 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 501 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 313 IncrementalHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 354 mSDtfsCounter, 313 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=142occurred in iteration=4, InterpolantAutomatonStates: 18, 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, 6 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 267 NumberOfCodeBlocks, 267 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 201 ConstructedInterpolants, 0 QuantifiedInterpolants, 329 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! [2023-04-03 01:02:20,970 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...