/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain EqDomain -i ../sv-benchmarks/c/product-lines/minepump_spec5_product45.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 12:09:02,241 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 12:09:02,242 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 12:09:02,275 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 12:09:02,275 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 12:09:02,278 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 12:09:02,283 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 12:09:02,285 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 12:09:02,287 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 12:09:02,291 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 12:09:02,293 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 12:09:02,294 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 12:09:02,295 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 12:09:02,299 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 12:09:02,299 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 12:09:02,301 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 12:09:02,301 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 12:09:02,302 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 12:09:02,304 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 12:09:02,308 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 12:09:02,309 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 12:09:02,310 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 12:09:02,311 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 12:09:02,312 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 12:09:02,326 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 12:09:02,326 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 12:09:02,327 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 12:09:02,328 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 12:09:02,328 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 12:09:02,329 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 12:09:02,329 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 12:09:02,329 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 12:09:02,330 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 12:09:02,331 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 12:09:02,331 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 12:09:02,331 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 12:09:02,332 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 12:09:02,332 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 12:09:02,332 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 12:09:02,333 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 12:09:02,334 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 12:09:02,340 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-01 12:09:02,366 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 12:09:02,366 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 12:09:02,366 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 12:09:02,366 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 12:09:02,367 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 12:09:02,367 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 12:09:02,368 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 12:09:02,368 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 12:09:02,368 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 12:09:02,368 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 12:09:02,369 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 12:09:02,369 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 12:09:02,369 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 12:09:02,369 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 12:09:02,369 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 12:09:02,369 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 12:09:02,369 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 12:09:02,370 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 12:09:02,370 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 12:09:02,370 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 12:09:02,370 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 12:09:02,370 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 12:09:02,370 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 12:09:02,371 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 12:09:02,371 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 12:09:02,371 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 12:09:02,371 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 12:09:02,371 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 12:09:02,371 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 12:09:02,371 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 12:09:02,372 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 12:09:02,372 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 12:09:02,372 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 12:09:02,372 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 12:09:02,372 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 12:09:02,372 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 12:09:02,373 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 12:09:02,373 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 12:09:02,373 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 12:09:02,373 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 12:09:02,373 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 12:09:02,373 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> EqDomain [2023-04-01 12:09:02,618 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 12:09:02,649 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 12:09:02,654 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 12:09:02,656 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 12:09:02,656 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 12:09:02,657 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec5_product45.cil.c [2023-04-01 12:09:03,867 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 12:09:04,084 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 12:09:04,089 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec5_product45.cil.c [2023-04-01 12:09:04,099 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f4cb73d7/61279d343bb6497285f44dcf0d6629a9/FLAG6a5806fde [2023-04-01 12:09:04,111 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f4cb73d7/61279d343bb6497285f44dcf0d6629a9 [2023-04-01 12:09:04,113 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 12:09:04,114 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 12:09:04,115 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 12:09:04,115 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 12:09:04,118 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 12:09:04,118 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:09:04" (1/1) ... [2023-04-01 12:09:04,119 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75823ca7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:09:04, skipping insertion in model container [2023-04-01 12:09:04,119 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:09:04" (1/1) ... [2023-04-01 12:09:04,125 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 12:09:04,161 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 12:09:04,292 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec5_product45.cil.c[3064,3077] [2023-04-01 12:09:04,389 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 12:09:04,401 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 12:09:04,438 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec5_product45.cil.c[3064,3077] [2023-04-01 12:09:04,498 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 12:09:04,514 INFO L208 MainTranslator]: Completed translation [2023-04-01 12:09:04,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:09:04 WrapperNode [2023-04-01 12:09:04,515 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 12:09:04,516 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 12:09:04,516 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 12:09:04,516 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 12:09:04,526 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:09:04" (1/1) ... [2023-04-01 12:09:04,527 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:09:04" (1/1) ... [2023-04-01 12:09:04,537 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:09:04" (1/1) ... [2023-04-01 12:09:04,538 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:09:04" (1/1) ... [2023-04-01 12:09:04,556 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:09:04" (1/1) ... [2023-04-01 12:09:04,563 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:09:04" (1/1) ... [2023-04-01 12:09:04,565 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:09:04" (1/1) ... [2023-04-01 12:09:04,567 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:09:04" (1/1) ... [2023-04-01 12:09:04,572 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 12:09:04,573 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 12:09:04,573 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 12:09:04,573 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 12:09:04,574 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:09:04" (1/1) ... [2023-04-01 12:09:04,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 12:09:04,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 12:09:04,605 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 12:09:04,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 12:09:04,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 12:09:04,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 12:09:04,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2023-04-01 12:09:04,639 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 12:09:04,639 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2023-04-01 12:09:04,639 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2023-04-01 12:09:04,639 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2023-04-01 12:09:04,639 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2023-04-01 12:09:04,640 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2023-04-01 12:09:04,640 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2023-04-01 12:09:04,640 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2023-04-01 12:09:04,640 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-04-01 12:09:04,640 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2023-04-01 12:09:04,640 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2023-04-01 12:09:04,640 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2023-04-01 12:09:04,640 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2023-04-01 12:09:04,641 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2023-04-01 12:09:04,641 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2023-04-01 12:09:04,641 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2023-04-01 12:09:04,641 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2023-04-01 12:09:04,641 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2023-04-01 12:09:04,641 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-04-01 12:09:04,641 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2023-04-01 12:09:04,641 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2023-04-01 12:09:04,641 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2023-04-01 12:09:04,642 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2023-04-01 12:09:04,642 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2023-04-01 12:09:04,642 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2023-04-01 12:09:04,642 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2023-04-01 12:09:04,642 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2023-04-01 12:09:04,642 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2023-04-01 12:09:04,642 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2023-04-01 12:09:04,642 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2023-04-01 12:09:04,643 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2023-04-01 12:09:04,643 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2023-04-01 12:09:04,643 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2023-04-01 12:09:04,643 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2023-04-01 12:09:04,643 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-04-01 12:09:04,643 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2023-04-01 12:09:04,643 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2023-04-01 12:09:04,643 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2023-04-01 12:09:04,644 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 12:09:04,644 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 12:09:04,644 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 12:09:04,644 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 12:09:04,644 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 12:09:04,644 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 12:09:04,644 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2023-04-01 12:09:04,645 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2023-04-01 12:09:04,645 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2023-04-01 12:09:04,645 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2023-04-01 12:09:04,645 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2023-04-01 12:09:04,645 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2023-04-01 12:09:04,645 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2023-04-01 12:09:04,645 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2023-04-01 12:09:04,645 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-04-01 12:09:04,645 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-01 12:09:04,646 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-01 12:09:04,646 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2023-04-01 12:09:04,646 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-01 12:09:04,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-01 12:09:04,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 12:09:04,646 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-01 12:09:04,646 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2023-04-01 12:09:04,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 12:09:04,647 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2023-04-01 12:09:04,647 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2023-04-01 12:09:04,647 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 12:09:04,647 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2023-04-01 12:09:04,647 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2023-04-01 12:09:04,647 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2023-04-01 12:09:04,647 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2023-04-01 12:09:04,647 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2023-04-01 12:09:04,647 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2023-04-01 12:09:04,647 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2023-04-01 12:09:04,648 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-04-01 12:09:04,648 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2023-04-01 12:09:04,648 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2023-04-01 12:09:04,648 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2023-04-01 12:09:04,648 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2023-04-01 12:09:04,648 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2023-04-01 12:09:04,648 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2023-04-01 12:09:04,648 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2023-04-01 12:09:04,648 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2023-04-01 12:09:04,649 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2023-04-01 12:09:04,649 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-04-01 12:09:04,649 INFO L130 BoogieDeclarations]: Found specification of procedure test [2023-04-01 12:09:04,649 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2023-04-01 12:09:04,649 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2023-04-01 12:09:04,649 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2023-04-01 12:09:04,649 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2023-04-01 12:09:04,649 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2023-04-01 12:09:04,649 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2023-04-01 12:09:04,650 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2023-04-01 12:09:04,650 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 12:09:04,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 12:09:04,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 12:09:04,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 12:09:04,782 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 12:09:04,784 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 12:09:05,423 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 12:09:05,574 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 12:09:05,575 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-04-01 12:09:05,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:09:05 BoogieIcfgContainer [2023-04-01 12:09:05,578 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 12:09:05,583 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 12:09:05,583 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 12:09:05,585 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 12:09:05,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 12:09:04" (1/3) ... [2023-04-01 12:09:05,586 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78cee4dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:09:05, skipping insertion in model container [2023-04-01 12:09:05,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:09:04" (2/3) ... [2023-04-01 12:09:05,587 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78cee4dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:09:05, skipping insertion in model container [2023-04-01 12:09:05,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:09:05" (3/3) ... [2023-04-01 12:09:05,589 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product45.cil.c [2023-04-01 12:09:05,604 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 12:09:05,605 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 12:09:05,664 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 12:09:05,669 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;@5722c03b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 12:09:05,670 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 12:09:05,673 INFO L276 IsEmpty]: Start isEmpty. Operand has 154 states, 70 states have (on average 1.2571428571428571) internal successors, (88), 83 states have internal predecessors, (88), 50 states have call successors, (50), 31 states have call predecessors, (50), 31 states have return successors, (50), 46 states have call predecessors, (50), 50 states have call successors, (50) [2023-04-01 12:09:05,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-04-01 12:09:05,682 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:09:05,683 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:09:05,684 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:09:05,689 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:09:05,689 INFO L85 PathProgramCache]: Analyzing trace with hash -419195124, now seen corresponding path program 1 times [2023-04-01 12:09:05,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:09:05,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004207449] [2023-04-01 12:09:05,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:09:05,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:09:05,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:09:05,904 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-01 12:09:05,905 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:09:05,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004207449] [2023-04-01 12:09:05,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004207449] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:09:05,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:09:05,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-04-01 12:09:05,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972861833] [2023-04-01 12:09:05,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:09:05,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-04-01 12:09:05,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:09:05,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-04-01 12:09:05,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-01 12:09:05,939 INFO L87 Difference]: Start difference. First operand has 154 states, 70 states have (on average 1.2571428571428571) internal successors, (88), 83 states have internal predecessors, (88), 50 states have call successors, (50), 31 states have call predecessors, (50), 31 states have return successors, (50), 46 states have call predecessors, (50), 50 states have call successors, (50) Second operand has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-04-01 12:09:06,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:09:06,023 INFO L93 Difference]: Finished difference Result 238 states and 287 transitions. [2023-04-01 12:09:06,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-04-01 12:09:06,025 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 52 [2023-04-01 12:09:06,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:09:06,036 INFO L225 Difference]: With dead ends: 238 [2023-04-01 12:09:06,036 INFO L226 Difference]: Without dead ends: 121 [2023-04-01 12:09:06,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-01 12:09:06,043 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 12:09:06,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 131 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 12:09:06,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2023-04-01 12:09:06,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2023-04-01 12:09:06,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 61 states have (on average 1.2131147540983607) internal successors, (74), 71 states have internal predecessors, (74), 35 states have call successors, (35), 29 states have call predecessors, (35), 24 states have return successors, (30), 26 states have call predecessors, (30), 30 states have call successors, (30) [2023-04-01 12:09:06,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 139 transitions. [2023-04-01 12:09:06,083 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 139 transitions. Word has length 52 [2023-04-01 12:09:06,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:09:06,084 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 139 transitions. [2023-04-01 12:09:06,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-04-01 12:09:06,084 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 139 transitions. [2023-04-01 12:09:06,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-04-01 12:09:06,087 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:09:06,087 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:09:06,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 12:09:06,088 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:09:06,089 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:09:06,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1801392719, now seen corresponding path program 1 times [2023-04-01 12:09:06,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:09:06,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386316039] [2023-04-01 12:09:06,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:09:06,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:09:06,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:09:06,198 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-01 12:09:06,199 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:09:06,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386316039] [2023-04-01 12:09:06,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386316039] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:09:06,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:09:06,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 12:09:06,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251408705] [2023-04-01 12:09:06,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:09:06,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 12:09:06,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:09:06,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 12:09:06,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 12:09:06,203 INFO L87 Difference]: Start difference. First operand 121 states and 139 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-04-01 12:09:06,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:09:06,269 INFO L93 Difference]: Finished difference Result 196 states and 226 transitions. [2023-04-01 12:09:06,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 12:09:06,270 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 53 [2023-04-01 12:09:06,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:09:06,272 INFO L225 Difference]: With dead ends: 196 [2023-04-01 12:09:06,272 INFO L226 Difference]: Without dead ends: 113 [2023-04-01 12:09:06,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 12:09:06,274 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 7 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 12:09:06,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 212 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 12:09:06,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2023-04-01 12:09:06,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2023-04-01 12:09:06,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 56 states have (on average 1.2142857142857142) internal successors, (68), 66 states have internal predecessors, (68), 32 states have call successors, (32), 28 states have call predecessors, (32), 24 states have return successors, (28), 24 states have call predecessors, (28), 28 states have call successors, (28) [2023-04-01 12:09:06,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 128 transitions. [2023-04-01 12:09:06,298 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 128 transitions. Word has length 53 [2023-04-01 12:09:06,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:09:06,298 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 128 transitions. [2023-04-01 12:09:06,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-04-01 12:09:06,302 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 128 transitions. [2023-04-01 12:09:06,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-04-01 12:09:06,305 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:09:06,306 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:09:06,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 12:09:06,306 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:09:06,307 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:09:06,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1440596416, now seen corresponding path program 1 times [2023-04-01 12:09:06,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:09:06,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061376107] [2023-04-01 12:09:06,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:09:06,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:09:06,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:09:06,564 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-01 12:09:06,564 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:09:06,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061376107] [2023-04-01 12:09:06,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061376107] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:09:06,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:09:06,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 12:09:06,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244493362] [2023-04-01 12:09:06,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:09:06,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 12:09:06,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:09:06,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 12:09:06,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-04-01 12:09:06,568 INFO L87 Difference]: Start difference. First operand 113 states and 128 transitions. Second operand has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) [2023-04-01 12:09:06,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:09:06,867 INFO L93 Difference]: Finished difference Result 201 states and 232 transitions. [2023-04-01 12:09:06,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-01 12:09:06,867 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) Word has length 55 [2023-04-01 12:09:06,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:09:06,869 INFO L225 Difference]: With dead ends: 201 [2023-04-01 12:09:06,869 INFO L226 Difference]: Without dead ends: 113 [2023-04-01 12:09:06,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-04-01 12:09:06,871 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 174 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 12:09:06,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 307 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 12:09:06,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2023-04-01 12:09:06,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2023-04-01 12:09:06,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 56 states have (on average 1.1964285714285714) internal successors, (67), 65 states have internal predecessors, (67), 32 states have call successors, (32), 28 states have call predecessors, (32), 24 states have return successors, (28), 24 states have call predecessors, (28), 28 states have call successors, (28) [2023-04-01 12:09:06,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 127 transitions. [2023-04-01 12:09:06,889 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 127 transitions. Word has length 55 [2023-04-01 12:09:06,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:09:06,890 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 127 transitions. [2023-04-01 12:09:06,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) [2023-04-01 12:09:06,891 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 127 transitions. [2023-04-01 12:09:06,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-04-01 12:09:06,892 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:09:06,893 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:09:06,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 12:09:06,893 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:09:06,894 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:09:06,894 INFO L85 PathProgramCache]: Analyzing trace with hash -874057189, now seen corresponding path program 1 times [2023-04-01 12:09:06,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:09:06,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142082603] [2023-04-01 12:09:06,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:09:06,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:09:06,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:09:07,198 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-01 12:09:07,199 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:09:07,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142082603] [2023-04-01 12:09:07,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142082603] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:09:07,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:09:07,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 12:09:07,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531560598] [2023-04-01 12:09:07,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:09:07,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 12:09:07,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:09:07,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 12:09:07,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 12:09:07,203 INFO L87 Difference]: Start difference. First operand 113 states and 127 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 5 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (13), 4 states have call predecessors, (13), 5 states have call successors, (13) [2023-04-01 12:09:07,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:09:07,588 INFO L93 Difference]: Finished difference Result 297 states and 348 transitions. [2023-04-01 12:09:07,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 12:09:07,589 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 5 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (13), 4 states have call predecessors, (13), 5 states have call successors, (13) Word has length 68 [2023-04-01 12:09:07,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:09:07,598 INFO L225 Difference]: With dead ends: 297 [2023-04-01 12:09:07,599 INFO L226 Difference]: Without dead ends: 209 [2023-04-01 12:09:07,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-04-01 12:09:07,609 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 163 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-01 12:09:07,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 142 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-01 12:09:07,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2023-04-01 12:09:07,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 194. [2023-04-01 12:09:07,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 102 states have (on average 1.1666666666666667) internal successors, (119), 110 states have internal predecessors, (119), 46 states have call successors, (46), 43 states have call predecessors, (46), 45 states have return successors, (50), 45 states have call predecessors, (50), 42 states have call successors, (50) [2023-04-01 12:09:07,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 215 transitions. [2023-04-01 12:09:07,655 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 215 transitions. Word has length 68 [2023-04-01 12:09:07,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:09:07,656 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 215 transitions. [2023-04-01 12:09:07,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 5 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (13), 4 states have call predecessors, (13), 5 states have call successors, (13) [2023-04-01 12:09:07,656 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 215 transitions. [2023-04-01 12:09:07,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-04-01 12:09:07,662 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:09:07,663 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:09:07,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 12:09:07,663 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:09:07,663 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:09:07,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1047969310, now seen corresponding path program 1 times [2023-04-01 12:09:07,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:09:07,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388522725] [2023-04-01 12:09:07,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:09:07,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:09:07,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:09:07,897 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 12:09:07,898 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:09:07,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388522725] [2023-04-01 12:09:07,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388522725] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:09:07,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:09:07,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 12:09:07,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103868760] [2023-04-01 12:09:07,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:09:07,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 12:09:07,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:09:07,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 12:09:07,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-01 12:09:07,902 INFO L87 Difference]: Start difference. First operand 194 states and 215 transitions. Second operand has 7 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 4 states have call successors, (21), 4 states have call predecessors, (21), 4 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2023-04-01 12:09:08,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:09:08,291 INFO L93 Difference]: Finished difference Result 377 states and 431 transitions. [2023-04-01 12:09:08,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-01 12:09:08,292 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 4 states have call successors, (21), 4 states have call predecessors, (21), 4 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) Word has length 77 [2023-04-01 12:09:08,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:09:08,297 INFO L225 Difference]: With dead ends: 377 [2023-04-01 12:09:08,297 INFO L226 Difference]: Without dead ends: 208 [2023-04-01 12:09:08,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2023-04-01 12:09:08,303 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 126 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-01 12:09:08,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 245 Invalid, 506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-01 12:09:08,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2023-04-01 12:09:08,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 193. [2023-04-01 12:09:08,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 101 states have (on average 1.1485148514851484) internal successors, (116), 109 states have internal predecessors, (116), 46 states have call successors, (46), 43 states have call predecessors, (46), 45 states have return successors, (50), 45 states have call predecessors, (50), 42 states have call successors, (50) [2023-04-01 12:09:08,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 212 transitions. [2023-04-01 12:09:08,338 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 212 transitions. Word has length 77 [2023-04-01 12:09:08,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:09:08,338 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 212 transitions. [2023-04-01 12:09:08,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 4 states have call successors, (21), 4 states have call predecessors, (21), 4 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2023-04-01 12:09:08,338 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 212 transitions. [2023-04-01 12:09:08,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-04-01 12:09:08,340 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:09:08,341 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:09:08,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-01 12:09:08,341 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:09:08,341 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:09:08,342 INFO L85 PathProgramCache]: Analyzing trace with hash 446559768, now seen corresponding path program 1 times [2023-04-01 12:09:08,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:09:08,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017324958] [2023-04-01 12:09:08,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:09:08,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:09:08,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:09:08,798 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-01 12:09:08,798 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:09:08,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017324958] [2023-04-01 12:09:08,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017324958] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:09:08,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:09:08,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-01 12:09:08,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938719616] [2023-04-01 12:09:08,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:09:08,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 12:09:08,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:09:08,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 12:09:08,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-04-01 12:09:08,800 INFO L87 Difference]: Start difference. First operand 193 states and 212 transitions. Second operand has 12 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 4 states have call successors, (24), 3 states have call predecessors, (24), 6 states have return successors, (18), 7 states have call predecessors, (18), 4 states have call successors, (18) [2023-04-01 12:09:09,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:09:09,209 INFO L93 Difference]: Finished difference Result 498 states and 568 transitions. [2023-04-01 12:09:09,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-01 12:09:09,210 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 4 states have call successors, (24), 3 states have call predecessors, (24), 6 states have return successors, (18), 7 states have call predecessors, (18), 4 states have call successors, (18) Word has length 90 [2023-04-01 12:09:09,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:09:09,216 INFO L225 Difference]: With dead ends: 498 [2023-04-01 12:09:09,216 INFO L226 Difference]: Without dead ends: 330 [2023-04-01 12:09:09,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2023-04-01 12:09:09,219 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 141 mSDsluCounter, 745 mSDsCounter, 0 mSdLazyCounter, 681 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 904 SdHoareTripleChecker+Invalid, 686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-01 12:09:09,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 904 Invalid, 686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 681 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-01 12:09:09,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2023-04-01 12:09:09,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 321. [2023-04-01 12:09:09,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 174 states have (on average 1.1436781609195403) internal successors, (199), 185 states have internal predecessors, (199), 75 states have call successors, (75), 70 states have call predecessors, (75), 71 states have return successors, (89), 74 states have call predecessors, (89), 71 states have call successors, (89) [2023-04-01 12:09:09,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 363 transitions. [2023-04-01 12:09:09,267 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 363 transitions. Word has length 90 [2023-04-01 12:09:09,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:09:09,273 INFO L495 AbstractCegarLoop]: Abstraction has 321 states and 363 transitions. [2023-04-01 12:09:09,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 4 states have call successors, (24), 3 states have call predecessors, (24), 6 states have return successors, (18), 7 states have call predecessors, (18), 4 states have call successors, (18) [2023-04-01 12:09:09,273 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 363 transitions. [2023-04-01 12:09:09,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-04-01 12:09:09,275 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:09:09,275 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:09:09,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-01 12:09:09,275 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:09:09,275 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:09:09,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1223127478, now seen corresponding path program 1 times [2023-04-01 12:09:09,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:09:09,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696375897] [2023-04-01 12:09:09,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:09:09,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:09:09,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:09:09,599 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-01 12:09:09,599 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:09:09,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696375897] [2023-04-01 12:09:09,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696375897] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:09:09,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:09:09,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 12:09:09,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936704220] [2023-04-01 12:09:09,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:09:09,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 12:09:09,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:09:09,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 12:09:09,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-01 12:09:09,602 INFO L87 Difference]: Start difference. First operand 321 states and 363 transitions. Second operand has 9 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 4 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) [2023-04-01 12:09:10,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:09:10,233 INFO L93 Difference]: Finished difference Result 991 states and 1155 transitions. [2023-04-01 12:09:10,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 12:09:10,234 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 4 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) Word has length 93 [2023-04-01 12:09:10,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:09:10,239 INFO L225 Difference]: With dead ends: 991 [2023-04-01 12:09:10,239 INFO L226 Difference]: Without dead ends: 752 [2023-04-01 12:09:10,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2023-04-01 12:09:10,241 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 284 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 612 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-01 12:09:10,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 491 Invalid, 718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 612 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-01 12:09:10,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2023-04-01 12:09:10,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 655. [2023-04-01 12:09:10,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 655 states, 360 states have (on average 1.15) internal successors, (414), 381 states have internal predecessors, (414), 147 states have call successors, (147), 138 states have call predecessors, (147), 147 states have return successors, (186), 151 states have call predecessors, (186), 143 states have call successors, (186) [2023-04-01 12:09:10,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 747 transitions. [2023-04-01 12:09:10,312 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 747 transitions. Word has length 93 [2023-04-01 12:09:10,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:09:10,313 INFO L495 AbstractCegarLoop]: Abstraction has 655 states and 747 transitions. [2023-04-01 12:09:10,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 4 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) [2023-04-01 12:09:10,314 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 747 transitions. [2023-04-01 12:09:10,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-04-01 12:09:10,318 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:09:10,318 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:09:10,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-01 12:09:10,319 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:09:10,319 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:09:10,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1374582122, now seen corresponding path program 1 times [2023-04-01 12:09:10,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:09:10,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597697851] [2023-04-01 12:09:10,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:09:10,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:09:10,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:09:10,608 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-04-01 12:09:10,608 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:09:10,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597697851] [2023-04-01 12:09:10,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597697851] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 12:09:10,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1937624343] [2023-04-01 12:09:10,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:09:10,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 12:09:10,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 12:09:10,612 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 12:09:10,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 12:09:10,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:09:10,764 INFO L262 TraceCheckSpWp]: Trace formula consists of 534 conjuncts, 8 conjunts are in the unsatisfiable core [2023-04-01 12:09:10,776 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 12:09:10,988 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 28 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:09:10,988 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 12:09:11,410 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-04-01 12:09:11,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1937624343] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 12:09:11,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [898299187] [2023-04-01 12:09:11,480 INFO L159 IcfgInterpreter]: Started Sifa with 106 locations of interest [2023-04-01 12:09:11,481 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 12:09:11,484 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 12:09:11,488 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 12:09:11,489 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 12:09:12,055 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 31 for LOIs [2023-04-01 12:09:12,111 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 129 for LOIs [2023-04-01 12:09:14,394 INFO L197 IcfgInterpreter]: Interpreting procedure runTest with input of size 129 for LOIs [2023-04-01 12:09:14,774 INFO L197 IcfgInterpreter]: Interpreting procedure test with input of size 129 for LOIs [2023-04-01 12:09:19,646 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 169 for LOIs [2023-04-01 12:09:19,718 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 140 for LOIs [2023-04-01 12:09:21,205 INFO L197 IcfgInterpreter]: Interpreting procedure lowerWaterLevel with input of size 123 for LOIs [2023-04-01 12:09:21,234 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment with input of size 128 for LOIs [2023-04-01 12:09:22,638 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__methaneQuery with input of size 126 for LOIs [2023-04-01 12:09:23,650 INFO L197 IcfgInterpreter]: Interpreting procedure isHighWaterLevel with input of size 119 for LOIs [2023-04-01 12:09:23,970 INFO L197 IcfgInterpreter]: Interpreting procedure isHighWaterSensorDry with input of size 119 for LOIs [2023-04-01 12:09:24,002 INFO L197 IcfgInterpreter]: Interpreting procedure activatePump with input of size 131 for LOIs [2023-04-01 12:09:24,577 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneAlarm with input of size 123 for LOIs [2023-04-01 12:09:24,996 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 123 for LOIs [2023-04-01 12:09:25,059 INFO L197 IcfgInterpreter]: Interpreting procedure activatePump__wrappee__highWaterSensor with input of size 121 for LOIs [2023-04-01 12:09:25,073 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 122 for LOIs [2023-04-01 12:09:25,087 INFO L197 IcfgInterpreter]: Interpreting procedure setup with input of size 121 for LOIs [2023-04-01 12:09:25,100 INFO L197 IcfgInterpreter]: Interpreting procedure select_features with input of size 121 for LOIs [2023-04-01 12:09:25,115 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification5_spec__3 with input of size 118 for LOIs [2023-04-01 12:09:25,595 INFO L197 IcfgInterpreter]: Interpreting procedure __automaton_fail with input of size 128 for LOIs [2023-04-01 12:09:25,615 INFO L197 IcfgInterpreter]: Interpreting procedure getWaterLevel with input of size 118 for LOIs [2023-04-01 12:09:25,633 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification5_spec__2 with input of size 134 for LOIs [2023-04-01 12:09:25,868 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 123 for LOIs [2023-04-01 12:09:25,915 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification5_spec__1 with input of size 123 for LOIs [2023-04-01 12:09:25,928 INFO L197 IcfgInterpreter]: Interpreting procedure valid_product with input of size 121 for LOIs [2023-04-01 12:09:25,944 INFO L197 IcfgInterpreter]: Interpreting procedure select_helpers with input of size 121 for LOIs [2023-04-01 12:09:25,956 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-01 12:09:48,923 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7637#(and (= (select |#length| 15) 25) (= 9 (select |#length| 5)) (= (select |#length| 9) 21) (= 30 (select |#length| 7)) (= 1 (select |#valid| 5)) (= (select |#length| 3) 12) (= (select |#valid| 15) 1) (= (select |#valid| 9) 1) (not (= ~pumpRunning~0 0)) (= (select |#length| 12) 25) (<= ~pumpRunning~0 2147483647) (= (select |#valid| 11) 1) (= ~methaneLevelCritical~0 0) (= 30 (select |#length| 4)) (not (= 2 ~waterLevel~0)) (= 31 (select |#length| 2)) (= ~head~0.offset 0) (= 2 (select |#length| 1)) (= (select |#length| 8) 9) (= (select |#valid| 3) 1) (= (select |#valid| 7) 1) (= 30 (select |#length| 13)) (= 1 ~systemActive~0) (= 30 (select |#length| 10)) (= (select |#valid| 12) 1) (not (= |#StackHeapBarrier| 0)) (= (select |#valid| 4) 1) (= (select |#valid| 1) 1) (= (select |#length| 6) 21) (= (select |#valid| 14) 1) (= 9 (select |#length| 14)) (= (select |#valid| 0) 0) (= ~head~0.base 0) (= (select |#valid| 2) 1) (<= 0 (+ ~pumpRunning~0 2147483648)) (= |#NULL.offset| 0) (= 9 (select |#length| 11)) (= (select (select |#memory_int| 1) 0) 48) (= (select |#valid| 6) 1) (= (select (select |#memory_int| 1) 1) 0) (= ~switchedOnBeforeTS~0 0) (= (select |#valid| 10) 1) (= (select |#valid| 8) 1) (= (select |#valid| 13) 1) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2023-04-01 12:09:48,924 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-01 12:09:48,924 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 12:09:48,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 19 [2023-04-01 12:09:48,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592751522] [2023-04-01 12:09:48,924 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 12:09:48,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-04-01 12:09:48,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:09:48,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-04-01 12:09:48,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=557, Invalid=5923, Unknown=0, NotChecked=0, Total=6480 [2023-04-01 12:09:48,928 INFO L87 Difference]: Start difference. First operand 655 states and 747 transitions. Second operand has 19 states, 12 states have (on average 9.75) internal successors, (117), 15 states have internal predecessors, (117), 7 states have call successors, (54), 6 states have call predecessors, (54), 11 states have return successors, (54), 10 states have call predecessors, (54), 6 states have call successors, (54) [2023-04-01 12:09:50,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:09:50,332 INFO L93 Difference]: Finished difference Result 1429 states and 1679 transitions. [2023-04-01 12:09:50,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-04-01 12:09:50,333 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 12 states have (on average 9.75) internal successors, (117), 15 states have internal predecessors, (117), 7 states have call successors, (54), 6 states have call predecessors, (54), 11 states have return successors, (54), 10 states have call predecessors, (54), 6 states have call successors, (54) Word has length 144 [2023-04-01 12:09:50,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:09:50,348 INFO L225 Difference]: With dead ends: 1429 [2023-04-01 12:09:50,348 INFO L226 Difference]: Without dead ends: 853 [2023-04-01 12:09:50,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 464 GetRequests, 355 SyntacticMatches, 13 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4212 ImplicationChecksByTransitivity, 23.6s TimeCoverageRelationStatistics Valid=723, Invalid=8783, Unknown=0, NotChecked=0, Total=9506 [2023-04-01 12:09:50,369 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 288 mSDsluCounter, 1320 mSDsCounter, 0 mSdLazyCounter, 1101 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 1535 SdHoareTripleChecker+Invalid, 1243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 1101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-01 12:09:50,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 1535 Invalid, 1243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 1101 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-01 12:09:50,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2023-04-01 12:09:50,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 742. [2023-04-01 12:09:50,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 742 states, 410 states have (on average 1.1414634146341462) internal successors, (468), 440 states have internal predecessors, (468), 168 states have call successors, (168), 159 states have call predecessors, (168), 163 states have return successors, (208), 162 states have call predecessors, (208), 164 states have call successors, (208) [2023-04-01 12:09:50,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 742 states to 742 states and 844 transitions. [2023-04-01 12:09:50,490 INFO L78 Accepts]: Start accepts. Automaton has 742 states and 844 transitions. Word has length 144 [2023-04-01 12:09:50,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:09:50,491 INFO L495 AbstractCegarLoop]: Abstraction has 742 states and 844 transitions. [2023-04-01 12:09:50,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 12 states have (on average 9.75) internal successors, (117), 15 states have internal predecessors, (117), 7 states have call successors, (54), 6 states have call predecessors, (54), 11 states have return successors, (54), 10 states have call predecessors, (54), 6 states have call successors, (54) [2023-04-01 12:09:50,492 INFO L276 IsEmpty]: Start isEmpty. Operand 742 states and 844 transitions. [2023-04-01 12:09:50,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2023-04-01 12:09:50,494 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:09:50,495 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:09:50,520 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 12:09:50,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 12:09:50,703 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:09:50,703 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:09:50,703 INFO L85 PathProgramCache]: Analyzing trace with hash -697323436, now seen corresponding path program 1 times [2023-04-01 12:09:50,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:09:50,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584535680] [2023-04-01 12:09:50,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:09:50,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:09:50,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:09:51,473 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 40 proven. 5 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-04-01 12:09:51,474 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:09:51,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584535680] [2023-04-01 12:09:51,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584535680] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 12:09:51,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157121870] [2023-04-01 12:09:51,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:09:51,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 12:09:51,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 12:09:51,475 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 12:09:51,478 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 12:09:51,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:09:51,706 INFO L262 TraceCheckSpWp]: Trace formula consists of 689 conjuncts, 23 conjunts are in the unsatisfiable core [2023-04-01 12:09:51,721 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 12:09:51,880 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 101 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-04-01 12:09:51,880 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 12:09:52,311 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 38 proven. 3 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2023-04-01 12:09:52,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157121870] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 12:09:52,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [252399869] [2023-04-01 12:09:52,315 INFO L159 IcfgInterpreter]: Started Sifa with 105 locations of interest [2023-04-01 12:09:52,315 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 12:09:52,316 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 12:09:52,316 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 12:09:52,316 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 12:09:52,646 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 31 for LOIs [2023-04-01 12:09:52,675 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 129 for LOIs [2023-04-01 12:09:53,851 INFO L197 IcfgInterpreter]: Interpreting procedure runTest with input of size 129 for LOIs [2023-04-01 12:09:54,159 INFO L197 IcfgInterpreter]: Interpreting procedure test with input of size 129 for LOIs [2023-04-01 12:09:57,644 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-04-01 12:09:57,972 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-04-01 12:09:58,147 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-04-01 12:09:58,950 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-04-01 12:09:59,498 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-04-01 12:09:59,665 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-04-01 12:09:59,888 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 128 for LOIs [2023-04-01 12:09:59,991 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 178 for LOIs [2023-04-01 12:10:01,916 INFO L197 IcfgInterpreter]: Interpreting procedure lowerWaterLevel with input of size 161 for LOIs [2023-04-01 12:10:01,960 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment with input of size 166 for LOIs [2023-04-01 12:10:02,888 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__methaneQuery with input of size 121 for LOIs [2023-04-01 12:10:03,301 INFO L197 IcfgInterpreter]: Interpreting procedure isHighWaterLevel with input of size 119 for LOIs [2023-04-01 12:10:03,604 INFO L197 IcfgInterpreter]: Interpreting procedure isHighWaterSensorDry with input of size 119 for LOIs [2023-04-01 12:10:03,634 INFO L197 IcfgInterpreter]: Interpreting procedure activatePump with input of size 131 for LOIs [2023-04-01 12:10:04,217 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneAlarm with input of size 161 for LOIs [2023-04-01 12:10:04,780 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 161 for LOIs [2023-04-01 12:10:04,870 INFO L197 IcfgInterpreter]: Interpreting procedure activatePump__wrappee__highWaterSensor with input of size 121 for LOIs [2023-04-01 12:10:04,890 INFO L197 IcfgInterpreter]: Interpreting procedure setup with input of size 121 for LOIs [2023-04-01 12:10:04,913 INFO L197 IcfgInterpreter]: Interpreting procedure select_features with input of size 121 for LOIs [2023-04-01 12:10:04,937 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification5_spec__3 with input of size 156 for LOIs