/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain EqDomain -i ../sv-benchmarks/c/product-lines/minepump_spec4_product52.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 12:07:07,386 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 12:07:07,388 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 12:07:07,419 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 12:07:07,420 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 12:07:07,422 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 12:07:07,427 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 12:07:07,428 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 12:07:07,430 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 12:07:07,433 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 12:07:07,435 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 12:07:07,436 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 12:07:07,436 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 12:07:07,438 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 12:07:07,439 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 12:07:07,440 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 12:07:07,440 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 12:07:07,441 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 12:07:07,442 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 12:07:07,446 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 12:07:07,447 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 12:07:07,447 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 12:07:07,448 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 12:07:07,449 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 12:07:07,456 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 12:07:07,456 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 12:07:07,456 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 12:07:07,458 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 12:07:07,458 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 12:07:07,458 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 12:07:07,459 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 12:07:07,459 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 12:07:07,460 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 12:07:07,461 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 12:07:07,461 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 12:07:07,461 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 12:07:07,462 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 12:07:07,462 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 12:07:07,462 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 12:07:07,463 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 12:07:07,463 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 12:07:07,464 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-01 12:07:07,487 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 12:07:07,488 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 12:07:07,488 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 12:07:07,488 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 12:07:07,489 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 12:07:07,489 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 12:07:07,489 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 12:07:07,489 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 12:07:07,489 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 12:07:07,490 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 12:07:07,490 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 12:07:07,490 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 12:07:07,490 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 12:07:07,490 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 12:07:07,491 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 12:07:07,491 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 12:07:07,491 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 12:07:07,491 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 12:07:07,491 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 12:07:07,491 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 12:07:07,492 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 12:07:07,492 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 12:07:07,492 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 12:07:07,492 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 12:07:07,492 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 12:07:07,492 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 12:07:07,492 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 12:07:07,493 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 12:07:07,493 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 12:07:07,493 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 12:07:07,493 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 12:07:07,493 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 12:07:07,493 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 12:07:07,493 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 12:07:07,493 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 12:07:07,494 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 12:07:07,494 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 12:07:07,494 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 12:07:07,494 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 12:07:07,494 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 12:07:07,494 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 12:07:07,494 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> EqDomain [2023-04-01 12:07:07,681 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 12:07:07,707 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 12:07:07,709 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 12:07:07,710 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 12:07:07,710 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 12:07:07,711 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec4_product52.cil.c [2023-04-01 12:07:08,753 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 12:07:08,974 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 12:07:08,974 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec4_product52.cil.c [2023-04-01 12:07:08,983 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/433a79758/c2554cb5088041519c676ccb7ae1a53c/FLAGaded11207 [2023-04-01 12:07:08,997 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/433a79758/c2554cb5088041519c676ccb7ae1a53c [2023-04-01 12:07:08,999 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 12:07:09,000 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 12:07:09,003 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 12:07:09,003 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 12:07:09,005 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 12:07:09,006 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:07:08" (1/1) ... [2023-04-01 12:07:09,007 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f97a5db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:07:09, skipping insertion in model container [2023-04-01 12:07:09,007 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:07:08" (1/1) ... [2023-04-01 12:07:09,012 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 12:07:09,059 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 12:07:09,261 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_spec4_product52.cil.c[18431,18444] [2023-04-01 12:07:09,265 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 12:07:09,273 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 12:07:09,329 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_spec4_product52.cil.c[18431,18444] [2023-04-01 12:07:09,330 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 12:07:09,342 INFO L208 MainTranslator]: Completed translation [2023-04-01 12:07:09,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:07:09 WrapperNode [2023-04-01 12:07:09,343 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 12:07:09,343 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 12:07:09,344 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 12:07:09,344 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 12:07:09,351 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:07:09" (1/1) ... [2023-04-01 12:07:09,352 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:07:09" (1/1) ... [2023-04-01 12:07:09,360 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:07:09" (1/1) ... [2023-04-01 12:07:09,361 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:07:09" (1/1) ... [2023-04-01 12:07:09,375 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:07:09" (1/1) ... [2023-04-01 12:07:09,380 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:07:09" (1/1) ... [2023-04-01 12:07:09,383 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:07:09" (1/1) ... [2023-04-01 12:07:09,385 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:07:09" (1/1) ... [2023-04-01 12:07:09,389 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 12:07:09,390 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 12:07:09,390 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 12:07:09,390 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 12:07:09,390 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:07:09" (1/1) ... [2023-04-01 12:07:09,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 12:07:09,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 12:07:09,419 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 12:07:09,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 12:07:09,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 12:07:09,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 12:07:09,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2023-04-01 12:07:09,451 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 12:07:09,451 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2023-04-01 12:07:09,451 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2023-04-01 12:07:09,451 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2023-04-01 12:07:09,451 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2023-04-01 12:07:09,451 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2023-04-01 12:07:09,451 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2023-04-01 12:07:09,451 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2023-04-01 12:07:09,451 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2023-04-01 12:07:09,451 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-04-01 12:07:09,451 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2023-04-01 12:07:09,451 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2023-04-01 12:07:09,451 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2023-04-01 12:07:09,452 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2023-04-01 12:07:09,452 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2023-04-01 12:07:09,452 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2023-04-01 12:07:09,452 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2023-04-01 12:07:09,452 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2023-04-01 12:07:09,452 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2023-04-01 12:07:09,452 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2023-04-01 12:07:09,452 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2023-04-01 12:07:09,452 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2023-04-01 12:07:09,452 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2023-04-01 12:07:09,452 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2023-04-01 12:07:09,452 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2023-04-01 12:07:09,452 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2023-04-01 12:07:09,452 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2023-04-01 12:07:09,453 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2023-04-01 12:07:09,453 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2023-04-01 12:07:09,453 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-04-01 12:07:09,453 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2023-04-01 12:07:09,453 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2023-04-01 12:07:09,453 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2023-04-01 12:07:09,453 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 12:07:09,453 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2023-04-01 12:07:09,453 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2023-04-01 12:07:09,453 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2023-04-01 12:07:09,453 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2023-04-01 12:07:09,454 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-04-01 12:07:09,454 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2023-04-01 12:07:09,454 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 12:07:09,454 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 12:07:09,454 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 12:07:09,454 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 12:07:09,454 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 12:07:09,454 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2023-04-01 12:07:09,454 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2023-04-01 12:07:09,454 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2023-04-01 12:07:09,454 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2023-04-01 12:07:09,454 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2023-04-01 12:07:09,454 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2023-04-01 12:07:09,454 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2023-04-01 12:07:09,455 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2023-04-01 12:07:09,455 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2023-04-01 12:07:09,455 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-04-01 12:07:09,455 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2023-04-01 12:07:09,455 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2023-04-01 12:07:09,455 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2023-04-01 12:07:09,455 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2023-04-01 12:07:09,455 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2023-04-01 12:07:09,455 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2023-04-01 12:07:09,455 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2023-04-01 12:07:09,455 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2023-04-01 12:07:09,455 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2023-04-01 12:07:09,455 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2023-04-01 12:07:09,455 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2023-04-01 12:07:09,456 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2023-04-01 12:07:09,456 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2023-04-01 12:07:09,456 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-04-01 12:07:09,456 INFO L130 BoogieDeclarations]: Found specification of procedure test [2023-04-01 12:07:09,456 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-01 12:07:09,456 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-01 12:07:09,456 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2023-04-01 12:07:09,456 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-01 12:07:09,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-01 12:07:09,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 12:07:09,456 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-01 12:07:09,456 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2023-04-01 12:07:09,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 12:07:09,456 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2023-04-01 12:07:09,457 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2023-04-01 12:07:09,457 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 12:07:09,457 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2023-04-01 12:07:09,457 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2023-04-01 12:07:09,457 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2023-04-01 12:07:09,457 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2023-04-01 12:07:09,457 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2023-04-01 12:07:09,457 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2023-04-01 12:07:09,457 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2023-04-01 12:07:09,457 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2023-04-01 12:07:09,457 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2023-04-01 12:07:09,457 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 12:07:09,457 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2023-04-01 12:07:09,457 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-04-01 12:07:09,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 12:07:09,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 12:07:09,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 12:07:09,625 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 12:07:09,628 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 12:07:10,030 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 12:07:10,143 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 12:07:10,143 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-04-01 12:07:10,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:07:10 BoogieIcfgContainer [2023-04-01 12:07:10,146 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 12:07:10,148 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 12:07:10,148 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 12:07:10,151 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 12:07:10,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 12:07:08" (1/3) ... [2023-04-01 12:07:10,152 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55feb24d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:07:10, skipping insertion in model container [2023-04-01 12:07:10,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:07:09" (2/3) ... [2023-04-01 12:07:10,152 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55feb24d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:07:10, skipping insertion in model container [2023-04-01 12:07:10,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:07:10" (3/3) ... [2023-04-01 12:07:10,153 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product52.cil.c [2023-04-01 12:07:10,166 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 12:07:10,166 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 12:07:10,213 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 12:07:10,218 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;@d91a471, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 12:07:10,219 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 12:07:10,223 INFO L276 IsEmpty]: Start isEmpty. Operand has 149 states, 68 states have (on average 1.2794117647058822) internal successors, (87), 83 states have internal predecessors, (87), 48 states have call successors, (48), 30 states have call predecessors, (48), 30 states have return successors, (48), 43 states have call predecessors, (48), 48 states have call successors, (48) [2023-04-01 12:07:10,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-04-01 12:07:10,233 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:07:10,233 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] [2023-04-01 12:07:10,234 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:07:10,239 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:07:10,239 INFO L85 PathProgramCache]: Analyzing trace with hash 2062378310, now seen corresponding path program 1 times [2023-04-01 12:07:10,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:07:10,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672452460] [2023-04-01 12:07:10,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:07:10,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:07:10,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:07:10,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:07:10,401 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:07:10,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672452460] [2023-04-01 12:07:10,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672452460] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:07:10,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:07:10,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-04-01 12:07:10,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777031664] [2023-04-01 12:07:10,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:07:10,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-04-01 12:07:10,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:07:10,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-04-01 12:07:10,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-01 12:07:10,439 INFO L87 Difference]: Start difference. First operand has 149 states, 68 states have (on average 1.2794117647058822) internal successors, (87), 83 states have internal predecessors, (87), 48 states have call successors, (48), 30 states have call predecessors, (48), 30 states have return successors, (48), 43 states have call predecessors, (48), 48 states have call successors, (48) Second operand has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-04-01 12:07:10,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:07:10,515 INFO L93 Difference]: Finished difference Result 231 states and 280 transitions. [2023-04-01 12:07:10,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-04-01 12:07:10,517 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 42 [2023-04-01 12:07:10,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:07:10,525 INFO L225 Difference]: With dead ends: 231 [2023-04-01 12:07:10,525 INFO L226 Difference]: Without dead ends: 116 [2023-04-01 12:07:10,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-01 12:07:10,534 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 12:07:10,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 127 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 12:07:10,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2023-04-01 12:07:10,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2023-04-01 12:07:10,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 59 states have (on average 1.2372881355932204) internal successors, (73), 71 states have internal predecessors, (73), 33 states have call successors, (33), 28 states have call predecessors, (33), 23 states have return successors, (28), 23 states have call predecessors, (28), 28 states have call successors, (28) [2023-04-01 12:07:10,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 134 transitions. [2023-04-01 12:07:10,579 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 134 transitions. Word has length 42 [2023-04-01 12:07:10,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:07:10,579 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 134 transitions. [2023-04-01 12:07:10,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-04-01 12:07:10,580 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 134 transitions. [2023-04-01 12:07:10,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-04-01 12:07:10,584 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:07:10,584 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] [2023-04-01 12:07:10,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 12:07:10,584 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:07:10,585 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:07:10,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1682862263, now seen corresponding path program 1 times [2023-04-01 12:07:10,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:07:10,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553436785] [2023-04-01 12:07:10,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:07:10,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:07:10,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:07:10,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:07:10,667 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:07:10,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553436785] [2023-04-01 12:07:10,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553436785] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:07:10,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:07:10,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 12:07:10,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67050588] [2023-04-01 12:07:10,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:07:10,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 12:07:10,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:07:10,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 12:07:10,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 12:07:10,669 INFO L87 Difference]: Start difference. First operand 116 states and 134 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-04-01 12:07:10,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:07:10,712 INFO L93 Difference]: Finished difference Result 179 states and 205 transitions. [2023-04-01 12:07:10,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 12:07:10,713 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 43 [2023-04-01 12:07:10,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:07:10,714 INFO L225 Difference]: With dead ends: 179 [2023-04-01 12:07:10,714 INFO L226 Difference]: Without dead ends: 108 [2023-04-01 12:07:10,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 12:07:10,715 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 11 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 12:07:10,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 197 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 12:07:10,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2023-04-01 12:07:10,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2023-04-01 12:07:10,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 54 states have (on average 1.2407407407407407) internal successors, (67), 66 states have internal predecessors, (67), 30 states have call successors, (30), 27 states have call predecessors, (30), 23 states have return successors, (26), 21 states have call predecessors, (26), 26 states have call successors, (26) [2023-04-01 12:07:10,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 123 transitions. [2023-04-01 12:07:10,722 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 123 transitions. Word has length 43 [2023-04-01 12:07:10,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:07:10,723 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 123 transitions. [2023-04-01 12:07:10,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-04-01 12:07:10,723 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 123 transitions. [2023-04-01 12:07:10,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-04-01 12:07:10,724 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:07:10,724 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:07:10,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 12:07:10,724 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:07:10,725 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:07:10,725 INFO L85 PathProgramCache]: Analyzing trace with hash 2066488329, now seen corresponding path program 1 times [2023-04-01 12:07:10,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:07:10,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585162014] [2023-04-01 12:07:10,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:07:10,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:07:10,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:07:10,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:07:10,861 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:07:10,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585162014] [2023-04-01 12:07:10,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585162014] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:07:10,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:07:10,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 12:07:10,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824619829] [2023-04-01 12:07:10,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:07:10,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 12:07:10,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:07:10,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 12:07:10,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-04-01 12:07:10,865 INFO L87 Difference]: Start difference. First operand 108 states and 123 transitions. Second operand has 7 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 4 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-04-01 12:07:11,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:07:11,204 INFO L93 Difference]: Finished difference Result 325 states and 385 transitions. [2023-04-01 12:07:11,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 12:07:11,205 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 4 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 47 [2023-04-01 12:07:11,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:07:11,213 INFO L225 Difference]: With dead ends: 325 [2023-04-01 12:07:11,214 INFO L226 Difference]: Without dead ends: 239 [2023-04-01 12:07:11,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-04-01 12:07:11,222 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 197 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 12:07:11,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 510 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 12:07:11,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2023-04-01 12:07:11,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 227. [2023-04-01 12:07:11,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 120 states have (on average 1.275) internal successors, (153), 143 states have internal predecessors, (153), 59 states have call successors, (59), 53 states have call predecessors, (59), 47 states have return successors, (56), 43 states have call predecessors, (56), 55 states have call successors, (56) [2023-04-01 12:07:11,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 268 transitions. [2023-04-01 12:07:11,263 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 268 transitions. Word has length 47 [2023-04-01 12:07:11,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:07:11,266 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 268 transitions. [2023-04-01 12:07:11,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 4 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-04-01 12:07:11,271 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 268 transitions. [2023-04-01 12:07:11,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-04-01 12:07:11,274 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:07:11,274 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] [2023-04-01 12:07:11,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 12:07:11,274 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:07:11,275 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:07:11,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1785957185, now seen corresponding path program 1 times [2023-04-01 12:07:11,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:07:11,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817610283] [2023-04-01 12:07:11,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:07:11,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:07:11,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:07:11,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:07:11,441 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:07:11,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817610283] [2023-04-01 12:07:11,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817610283] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:07:11,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:07:11,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 12:07:11,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573646124] [2023-04-01 12:07:11,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:07:11,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-01 12:07:11,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:07:11,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-01 12:07:11,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-01 12:07:11,443 INFO L87 Difference]: Start difference. First operand 227 states and 268 transitions. Second operand has 6 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-04-01 12:07:11,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:07:11,585 INFO L93 Difference]: Finished difference Result 619 states and 757 transitions. [2023-04-01 12:07:11,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-01 12:07:11,586 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 51 [2023-04-01 12:07:11,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:07:11,590 INFO L225 Difference]: With dead ends: 619 [2023-04-01 12:07:11,590 INFO L226 Difference]: Without dead ends: 414 [2023-04-01 12:07:11,591 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 12:07:11,598 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 83 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 12:07:11,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 454 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 12:07:11,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2023-04-01 12:07:11,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 396. [2023-04-01 12:07:11,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 215 states have (on average 1.2790697674418605) internal successors, (275), 254 states have internal predecessors, (275), 100 states have call successors, (100), 88 states have call predecessors, (100), 80 states have return successors, (102), 72 states have call predecessors, (102), 96 states have call successors, (102) [2023-04-01 12:07:11,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 477 transitions. [2023-04-01 12:07:11,640 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 477 transitions. Word has length 51 [2023-04-01 12:07:11,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:07:11,640 INFO L495 AbstractCegarLoop]: Abstraction has 396 states and 477 transitions. [2023-04-01 12:07:11,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-04-01 12:07:11,640 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 477 transitions. [2023-04-01 12:07:11,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-04-01 12:07:11,642 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:07:11,642 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] [2023-04-01 12:07:11,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 12:07:11,643 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:07:11,643 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:07:11,643 INFO L85 PathProgramCache]: Analyzing trace with hash 839853698, now seen corresponding path program 1 times [2023-04-01 12:07:11,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:07:11,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645450298] [2023-04-01 12:07:11,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:07:11,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:07:11,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:07:11,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:07:11,766 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:07:11,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645450298] [2023-04-01 12:07:11,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645450298] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:07:11,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:07:11,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 12:07:11,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777994159] [2023-04-01 12:07:11,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:07:11,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 12:07:11,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:07:11,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 12:07:11,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-01 12:07:11,768 INFO L87 Difference]: Start difference. First operand 396 states and 477 transitions. Second operand has 7 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 3 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-04-01 12:07:12,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:07:12,084 INFO L93 Difference]: Finished difference Result 1004 states and 1327 transitions. [2023-04-01 12:07:12,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-01 12:07:12,084 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), 3 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 54 [2023-04-01 12:07:12,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:07:12,087 INFO L225 Difference]: With dead ends: 1004 [2023-04-01 12:07:12,087 INFO L226 Difference]: Without dead ends: 630 [2023-04-01 12:07:12,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2023-04-01 12:07:12,088 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 141 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 12:07:12,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 278 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 12:07:12,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2023-04-01 12:07:12,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 536. [2023-04-01 12:07:12,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 306 states have (on average 1.2156862745098038) internal successors, (372), 335 states have internal predecessors, (372), 113 states have call successors, (113), 107 states have call predecessors, (113), 116 states have return successors, (154), 115 states have call predecessors, (154), 109 states have call successors, (154) [2023-04-01 12:07:12,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 639 transitions. [2023-04-01 12:07:12,126 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 639 transitions. Word has length 54 [2023-04-01 12:07:12,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:07:12,126 INFO L495 AbstractCegarLoop]: Abstraction has 536 states and 639 transitions. [2023-04-01 12:07:12,126 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), 3 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-04-01 12:07:12,126 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 639 transitions. [2023-04-01 12:07:12,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-04-01 12:07:12,128 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:07:12,128 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:07:12,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-01 12:07:12,128 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:07:12,128 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:07:12,128 INFO L85 PathProgramCache]: Analyzing trace with hash 308220487, now seen corresponding path program 1 times [2023-04-01 12:07:12,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:07:12,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795475155] [2023-04-01 12:07:12,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:07:12,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:07:12,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:07:12,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:07:12,347 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:07:12,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795475155] [2023-04-01 12:07:12,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795475155] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:07:12,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:07:12,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-04-01 12:07:12,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252721539] [2023-04-01 12:07:12,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:07:12,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-01 12:07:12,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:07:12,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-01 12:07:12,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-04-01 12:07:12,348 INFO L87 Difference]: Start difference. First operand 536 states and 639 transitions. Second operand has 14 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 3 states have call successors, (19), 3 states have call predecessors, (19), 6 states have return successors, (13), 7 states have call predecessors, (13), 3 states have call successors, (13) [2023-04-01 12:07:12,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:07:12,638 INFO L93 Difference]: Finished difference Result 1059 states and 1307 transitions. [2023-04-01 12:07:12,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-01 12:07:12,638 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 3 states have call successors, (19), 3 states have call predecessors, (19), 6 states have return successors, (13), 7 states have call predecessors, (13), 3 states have call successors, (13) Word has length 72 [2023-04-01 12:07:12,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:07:12,642 INFO L225 Difference]: With dead ends: 1059 [2023-04-01 12:07:12,643 INFO L226 Difference]: Without dead ends: 743 [2023-04-01 12:07:12,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2023-04-01 12:07:12,644 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 221 mSDsluCounter, 961 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 1064 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 12:07:12,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 1064 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 12:07:12,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2023-04-01 12:07:12,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 714. [2023-04-01 12:07:12,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 714 states, 418 states have (on average 1.2200956937799043) internal successors, (510), 454 states have internal predecessors, (510), 146 states have call successors, (146), 142 states have call predecessors, (146), 149 states have return successors, (204), 147 states have call predecessors, (204), 142 states have call successors, (204) [2023-04-01 12:07:12,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 714 states to 714 states and 860 transitions. [2023-04-01 12:07:12,691 INFO L78 Accepts]: Start accepts. Automaton has 714 states and 860 transitions. Word has length 72 [2023-04-01 12:07:12,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:07:12,691 INFO L495 AbstractCegarLoop]: Abstraction has 714 states and 860 transitions. [2023-04-01 12:07:12,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 3 states have call successors, (19), 3 states have call predecessors, (19), 6 states have return successors, (13), 7 states have call predecessors, (13), 3 states have call successors, (13) [2023-04-01 12:07:12,692 INFO L276 IsEmpty]: Start isEmpty. Operand 714 states and 860 transitions. [2023-04-01 12:07:12,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-04-01 12:07:12,694 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:07:12,694 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:07:12,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-01 12:07:12,694 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:07:12,695 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:07:12,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1169085972, now seen corresponding path program 1 times [2023-04-01 12:07:12,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:07:12,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856591617] [2023-04-01 12:07:12,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:07:12,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:07:12,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:07:13,001 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-04-01 12:07:13,001 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:07:13,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856591617] [2023-04-01 12:07:13,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856591617] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 12:07:13,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1921413032] [2023-04-01 12:07:13,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:07:13,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 12:07:13,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 12:07:13,031 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 12:07:13,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 12:07:13,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:07:13,155 INFO L262 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 33 conjunts are in the unsatisfiable core [2023-04-01 12:07:13,161 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 12:07:13,470 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:07:13,470 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 12:07:13,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1921413032] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:07:13,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 12:07:13,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [14] total 22 [2023-04-01 12:07:13,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328229342] [2023-04-01 12:07:13,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:07:13,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-01 12:07:13,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:07:13,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-01 12:07:13,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2023-04-01 12:07:13,473 INFO L87 Difference]: Start difference. First operand 714 states and 860 transitions. Second operand has 14 states, 11 states have (on average 6.181818181818182) internal successors, (68), 11 states have internal predecessors, (68), 6 states have call successors, (27), 5 states have call predecessors, (27), 7 states have return successors, (21), 7 states have call predecessors, (21), 6 states have call successors, (21) [2023-04-01 12:07:14,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:07:14,478 INFO L93 Difference]: Finished difference Result 1523 states and 1874 transitions. [2023-04-01 12:07:14,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-04-01 12:07:14,479 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 6.181818181818182) internal successors, (68), 11 states have internal predecessors, (68), 6 states have call successors, (27), 5 states have call predecessors, (27), 7 states have return successors, (21), 7 states have call predecessors, (21), 6 states have call successors, (21) Word has length 116 [2023-04-01 12:07:14,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:07:14,482 INFO L225 Difference]: With dead ends: 1523 [2023-04-01 12:07:14,482 INFO L226 Difference]: Without dead ends: 831 [2023-04-01 12:07:14,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 372 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=220, Invalid=1420, Unknown=0, NotChecked=0, Total=1640 [2023-04-01 12:07:14,485 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 218 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 1612 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 1722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 1612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-01 12:07:14,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 422 Invalid, 1722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 1612 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-01 12:07:14,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 831 states. [2023-04-01 12:07:14,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 831 to 769. [2023-04-01 12:07:14,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 769 states, 458 states have (on average 1.2139737991266375) internal successors, (556), 496 states have internal predecessors, (556), 160 states have call successors, (160), 158 states have call predecessors, (160), 150 states have return successors, (194), 148 states have call predecessors, (194), 156 states have call successors, (194) [2023-04-01 12:07:14,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 910 transitions. [2023-04-01 12:07:14,527 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 910 transitions. Word has length 116 [2023-04-01 12:07:14,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:07:14,527 INFO L495 AbstractCegarLoop]: Abstraction has 769 states and 910 transitions. [2023-04-01 12:07:14,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 6.181818181818182) internal successors, (68), 11 states have internal predecessors, (68), 6 states have call successors, (27), 5 states have call predecessors, (27), 7 states have return successors, (21), 7 states have call predecessors, (21), 6 states have call successors, (21) [2023-04-01 12:07:14,527 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 910 transitions. [2023-04-01 12:07:14,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-04-01 12:07:14,529 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:07:14,529 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:07:14,539 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-01 12:07:14,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 12:07:14,736 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:07:14,736 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:07:14,736 INFO L85 PathProgramCache]: Analyzing trace with hash 146732209, now seen corresponding path program 1 times [2023-04-01 12:07:14,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:07:14,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10589674] [2023-04-01 12:07:14,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:07:14,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:07:14,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:07:15,029 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-04-01 12:07:15,030 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:07:15,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10589674] [2023-04-01 12:07:15,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10589674] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 12:07:15,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101304619] [2023-04-01 12:07:15,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:07:15,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 12:07:15,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 12:07:15,031 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 12:07:15,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-01 12:07:15,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:07:15,155 INFO L262 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 51 conjunts are in the unsatisfiable core [2023-04-01 12:07:15,164 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 12:07:15,463 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-04-01 12:07:15,463 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 12:07:16,036 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-04-01 12:07:16,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [101304619] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 12:07:16,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [987661769] [2023-04-01 12:07:16,089 INFO L159 IcfgInterpreter]: Started Sifa with 93 locations of interest [2023-04-01 12:07:16,089 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 12:07:16,093 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 12:07:16,096 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 12:07:16,096 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 12:07:16,471 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 28 for LOIs [2023-04-01 12:07:16,500 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 127 for LOIs [2023-04-01 12:07:17,698 INFO L197 IcfgInterpreter]: Interpreting procedure runTest with input of size 127 for LOIs [2023-04-01 12:07:17,738 INFO L197 IcfgInterpreter]: Interpreting procedure setup with input of size 119 for LOIs [2023-04-01 12:07:17,755 INFO L197 IcfgInterpreter]: Interpreting procedure select_features with input of size 119 for LOIs [2023-04-01 12:07:17,770 INFO L197 IcfgInterpreter]: Interpreting procedure test with input of size 127 for LOIs [2023-04-01 12:07:21,193 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 130 for LOIs [2023-04-01 12:07:21,221 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 126 for LOIs [2023-04-01 12:07:22,058 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification4_spec__1 with input of size 118 for LOIs [2023-04-01 12:07:22,445 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 120 for LOIs [2023-04-01 12:07:22,458 INFO L197 IcfgInterpreter]: Interpreting procedure __automaton_fail with input of size 125 for LOIs [2023-04-01 12:07:22,472 INFO L197 IcfgInterpreter]: Interpreting procedure getWaterLevel with input of size 118 for LOIs [2023-04-01 12:07:22,485 INFO L197 IcfgInterpreter]: Interpreting procedure lowerWaterLevel with input of size 126 for LOIs [2023-04-01 12:07:22,533 INFO L197 IcfgInterpreter]: Interpreting procedure valid_product with input of size 119 for LOIs [2023-04-01 12:07:22,549 INFO L197 IcfgInterpreter]: Interpreting procedure select_helpers with input of size 119 for LOIs [2023-04-01 12:07:22,561 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment with input of size 118 for LOIs [2023-04-01 12:07:23,264 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 123 for LOIs [2023-04-01 12:07:23,949 INFO L197 IcfgInterpreter]: Interpreting procedure isHighWaterLevel with input of size 117 for LOIs [2023-04-01 12:07:24,181 INFO L197 IcfgInterpreter]: Interpreting procedure isHighWaterSensorDry with input of size 117 for LOIs [2023-04-01 12:07:24,202 INFO L197 IcfgInterpreter]: Interpreting procedure activatePump with input of size 129 for LOIs [2023-04-01 12:07:24,218 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 118 for LOIs [2023-04-01 12:07:24,230 INFO L197 IcfgInterpreter]: Interpreting procedure isLowWaterLevel with input of size 118 for LOIs [2023-04-01 12:07:24,464 INFO L197 IcfgInterpreter]: Interpreting procedure isLowWaterSensorDry with input of size 118 for LOIs [2023-04-01 12:07:24,480 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-01 12:07:40,764 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '12711#(and (= (select |#length| 15) 25) (= 9 (select |#length| 5)) (= (select |#length| 9) 21) (= 30 (select |#length| 7)) (= 1 (select |#valid| 5)) (= (select |#length| 3) 12) (= (select |#valid| 15) 1) (= (select |#valid| 9) 1) (not (= ~pumpRunning~0 0)) (= (select |#length| 12) 25) (<= ~pumpRunning~0 2147483647) (= (select |#valid| 11) 1) (= ~methaneLevelCritical~0 0) (= 30 (select |#length| 4)) (= 31 (select |#length| 2)) (= ~head~0.offset 0) (= 2 (select |#length| 1)) (= (select |#length| 8) 9) (= (select |#valid| 3) 1) (= (select |#valid| 7) 1) (= 30 (select |#length| 13)) (= 1 ~systemActive~0) (= 30 (select |#length| 10)) (= (select |#valid| 12) 1) (not (= |#StackHeapBarrier| 0)) (= (select |#valid| 4) 1) (= (select |#valid| 1) 1) (= (select |#length| 6) 21) (= (select |#valid| 14) 1) (= 9 (select |#length| 14)) (= (select |#valid| 0) 0) (= ~head~0.base 0) (= (select |#valid| 2) 1) (<= 0 (+ ~pumpRunning~0 2147483648)) (= |#NULL.offset| 0) (= 9 (select |#length| 11)) (= (select (select |#memory_int| 1) 0) 48) (= ~waterLevel~0 0) (= (select |#valid| 6) 1) (= (select (select |#memory_int| 1) 1) 0) (= (select |#valid| 10) 1) (= (select |#valid| 8) 1) (= (select |#valid| 13) 1) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2023-04-01 12:07:40,764 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-01 12:07:40,764 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 12:07:40,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 15, 17] total 33 [2023-04-01 12:07:40,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668716900] [2023-04-01 12:07:40,765 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 12:07:40,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-04-01 12:07:40,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:07:40,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-04-01 12:07:40,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=610, Invalid=6362, Unknown=0, NotChecked=0, Total=6972 [2023-04-01 12:07:40,768 INFO L87 Difference]: Start difference. First operand 769 states and 910 transitions. Second operand has 33 states, 22 states have (on average 5.863636363636363) internal successors, (129), 27 states have internal predecessors, (129), 10 states have call successors, (56), 11 states have call predecessors, (56), 18 states have return successors, (50), 16 states have call predecessors, (50), 10 states have call successors, (50) [2023-04-01 12:07:43,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:07:43,404 INFO L93 Difference]: Finished difference Result 4279 states and 5887 transitions. [2023-04-01 12:07:43,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-04-01 12:07:43,405 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 22 states have (on average 5.863636363636363) internal successors, (129), 27 states have internal predecessors, (129), 10 states have call successors, (56), 11 states have call predecessors, (56), 18 states have return successors, (50), 16 states have call predecessors, (50), 10 states have call successors, (50) Word has length 119 [2023-04-01 12:07:43,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:07:43,423 INFO L225 Difference]: With dead ends: 4279 [2023-04-01 12:07:43,423 INFO L226 Difference]: Without dead ends: 3632 [2023-04-01 12:07:43,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 293 SyntacticMatches, 6 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5937 ImplicationChecksByTransitivity, 17.5s TimeCoverageRelationStatistics Valid=1283, Invalid=13237, Unknown=0, NotChecked=0, Total=14520 [2023-04-01 12:07:43,432 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 1107 mSDsluCounter, 830 mSDsCounter, 0 mSdLazyCounter, 2626 mSolverCounterSat, 945 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1150 SdHoareTripleChecker+Valid, 933 SdHoareTripleChecker+Invalid, 3571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 945 IncrementalHoareTripleChecker+Valid, 2626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-04-01 12:07:43,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1150 Valid, 933 Invalid, 3571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [945 Valid, 2626 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-04-01 12:07:43,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3632 states. [2023-04-01 12:07:43,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3632 to 2856. [2023-04-01 12:07:43,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2856 states, 1688 states have (on average 1.2020142180094786) internal successors, (2029), 1822 states have internal predecessors, (2029), 611 states have call successors, (611), 583 states have call predecessors, (611), 556 states have return successors, (877), 564 states have call predecessors, (877), 607 states have call successors, (877) [2023-04-01 12:07:43,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2856 states to 2856 states and 3517 transitions. [2023-04-01 12:07:43,660 INFO L78 Accepts]: Start accepts. Automaton has 2856 states and 3517 transitions. Word has length 119 [2023-04-01 12:07:43,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:07:43,660 INFO L495 AbstractCegarLoop]: Abstraction has 2856 states and 3517 transitions. [2023-04-01 12:07:43,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 22 states have (on average 5.863636363636363) internal successors, (129), 27 states have internal predecessors, (129), 10 states have call successors, (56), 11 states have call predecessors, (56), 18 states have return successors, (50), 16 states have call predecessors, (50), 10 states have call successors, (50) [2023-04-01 12:07:43,661 INFO L276 IsEmpty]: Start isEmpty. Operand 2856 states and 3517 transitions. [2023-04-01 12:07:43,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-04-01 12:07:43,665 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:07:43,665 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:07:43,673 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-01 12:07:43,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-04-01 12:07:43,872 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:07:43,872 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:07:43,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1408639873, now seen corresponding path program 2 times [2023-04-01 12:07:43,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:07:43,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868876518] [2023-04-01 12:07:43,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:07:43,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:07:43,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:07:44,132 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 50 proven. 16 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-04-01 12:07:44,132 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:07:44,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868876518] [2023-04-01 12:07:44,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868876518] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 12:07:44,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286727792] [2023-04-01 12:07:44,132 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-04-01 12:07:44,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 12:07:44,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 12:07:44,134 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 12:07:44,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-01 12:07:44,242 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-04-01 12:07:44,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-01 12:07:44,245 INFO L262 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 9 conjunts are in the unsatisfiable core [2023-04-01 12:07:44,252 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 12:07:44,272 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-04-01 12:07:44,272 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 12:07:44,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1286727792] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:07:44,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 12:07:44,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 9 [2023-04-01 12:07:44,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212403647] [2023-04-01 12:07:44,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:07:44,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 12:07:44,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:07:44,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 12:07:44,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-04-01 12:07:44,274 INFO L87 Difference]: Start difference. First operand 2856 states and 3517 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 4 states have call successors, (31), 4 states have call predecessors, (31), 4 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2023-04-01 12:07:44,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:07:44,640 INFO L93 Difference]: Finished difference Result 5676 states and 7066 transitions. [2023-04-01 12:07:44,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 12:07:44,640 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 4 states have call successors, (31), 4 states have call predecessors, (31), 4 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) Word has length 166 [2023-04-01 12:07:44,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:07:44,653 INFO L225 Difference]: With dead ends: 5676 [2023-04-01 12:07:44,653 INFO L226 Difference]: Without dead ends: 2968 [2023-04-01 12:07:44,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-04-01 12:07:44,662 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 191 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 12:07:44,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 189 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 12:07:44,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2968 states. [2023-04-01 12:07:44,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2968 to 2749. [2023-04-01 12:07:44,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2749 states, 1645 states have (on average 1.1768996960486322) internal successors, (1936), 1771 states have internal predecessors, (1936), 571 states have call successors, (571), 563 states have call predecessors, (571), 532 states have return successors, (675), 522 states have call predecessors, (675), 567 states have call successors, (675) [2023-04-01 12:07:44,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2749 states to 2749 states and 3182 transitions. [2023-04-01 12:07:44,832 INFO L78 Accepts]: Start accepts. Automaton has 2749 states and 3182 transitions. Word has length 166 [2023-04-01 12:07:44,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:07:44,833 INFO L495 AbstractCegarLoop]: Abstraction has 2749 states and 3182 transitions. [2023-04-01 12:07:44,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 4 states have call successors, (31), 4 states have call predecessors, (31), 4 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2023-04-01 12:07:44,833 INFO L276 IsEmpty]: Start isEmpty. Operand 2749 states and 3182 transitions. [2023-04-01 12:07:44,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-04-01 12:07:44,836 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:07:44,837 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:07:44,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-01 12:07:45,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 12:07:45,042 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:07:45,042 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:07:45,043 INFO L85 PathProgramCache]: Analyzing trace with hash 894294279, now seen corresponding path program 3 times [2023-04-01 12:07:45,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:07:45,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598190912] [2023-04-01 12:07:45,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:07:45,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:07:45,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:07:45,593 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 37 proven. 18 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-04-01 12:07:45,593 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:07:45,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598190912] [2023-04-01 12:07:45,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598190912] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 12:07:45,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88967379] [2023-04-01 12:07:45,593 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-04-01 12:07:45,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 12:07:45,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 12:07:45,594 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 12:07:45,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-01 12:07:45,724 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-04-01 12:07:45,724 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-01 12:07:45,726 INFO L262 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 51 conjunts are in the unsatisfiable core [2023-04-01 12:07:45,731 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 12:07:45,999 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 74 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:07:45,999 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 12:07:46,533 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 45 proven. 9 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-04-01 12:07:46,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [88967379] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 12:07:46,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [340362853] [2023-04-01 12:07:46,535 INFO L159 IcfgInterpreter]: Started Sifa with 93 locations of interest [2023-04-01 12:07:46,535 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 12:07:46,536 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 12:07:46,536 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 12:07:46,536 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 12:07:46,673 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 28 for LOIs [2023-04-01 12:07:46,689 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 127 for LOIs [2023-04-01 12:07:47,456 INFO L197 IcfgInterpreter]: Interpreting procedure runTest with input of size 127 for LOIs [2023-04-01 12:07:47,486 INFO L197 IcfgInterpreter]: Interpreting procedure setup with input of size 119 for LOIs [2023-04-01 12:07:47,499 INFO L197 IcfgInterpreter]: Interpreting procedure select_features with input of size 119 for LOIs [2023-04-01 12:07:47,512 INFO L197 IcfgInterpreter]: Interpreting procedure test with input of size 127 for LOIs [2023-04-01 12:07:50,525 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 130 for LOIs [2023-04-01 12:07:50,556 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 126 for LOIs [2023-04-01 12:07:51,391 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification4_spec__1 with input of size 118 for LOIs [2023-04-01 12:07:51,745 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 120 for LOIs [2023-04-01 12:07:51,758 INFO L197 IcfgInterpreter]: Interpreting procedure __automaton_fail with input of size 125 for LOIs [2023-04-01 12:07:51,771 INFO L197 IcfgInterpreter]: Interpreting procedure getWaterLevel with input of size 118 for LOIs [2023-04-01 12:07:51,784 INFO L197 IcfgInterpreter]: Interpreting procedure lowerWaterLevel with input of size 126 for LOIs [2023-04-01 12:07:51,831 INFO L197 IcfgInterpreter]: Interpreting procedure valid_product with input of size 119 for LOIs [2023-04-01 12:07:51,848 INFO L197 IcfgInterpreter]: Interpreting procedure select_helpers with input of size 119 for LOIs [2023-04-01 12:07:51,860 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment with input of size 118 for LOIs [2023-04-01 12:07:52,545 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 123 for LOIs [2023-04-01 12:07:53,204 INFO L197 IcfgInterpreter]: Interpreting procedure isHighWaterLevel with input of size 117 for LOIs [2023-04-01 12:07:53,423 INFO L197 IcfgInterpreter]: Interpreting procedure isHighWaterSensorDry with input of size 117 for LOIs [2023-04-01 12:07:53,444 INFO L197 IcfgInterpreter]: Interpreting procedure activatePump with input of size 129 for LOIs [2023-04-01 12:07:53,460 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 118 for LOIs [2023-04-01 12:07:53,472 INFO L197 IcfgInterpreter]: Interpreting procedure isLowWaterLevel with input of size 118 for LOIs [2023-04-01 12:07:53,708 INFO L197 IcfgInterpreter]: Interpreting procedure isLowWaterSensorDry with input of size 118 for LOIs [2023-04-01 12:07:53,723 INFO L180 IcfgInterpreter]: Interpretation finished