/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 IntervalDomain -i ../sv-benchmarks/c/product-lines/minepump_spec4_product63.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 23:58:08,361 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 23:58:08,363 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 23:58:08,398 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 23:58:08,399 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 23:58:08,401 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 23:58:08,405 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 23:58:08,408 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 23:58:08,409 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 23:58:08,414 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 23:58:08,415 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 23:58:08,417 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 23:58:08,418 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 23:58:08,420 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 23:58:08,422 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 23:58:08,423 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 23:58:08,423 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 23:58:08,424 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 23:58:08,426 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 23:58:08,431 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 23:58:08,432 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 23:58:08,434 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 23:58:08,435 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 23:58:08,436 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 23:58:08,444 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-03-31 23:58:08,444 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-03-31 23:58:08,445 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-03-31 23:58:08,446 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-03-31 23:58:08,446 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-03-31 23:58:08,447 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-03-31 23:58:08,448 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-31 23:58:08,448 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-31 23:58:08,450 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-31 23:58:08,451 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-31 23:58:08,452 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-31 23:58:08,452 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-31 23:58:08,452 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-31 23:58:08,452 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-31 23:58:08,453 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 23:58:08,453 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 23:58:08,454 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 23:58:08,455 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 [2023-03-31 23:58:08,490 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 23:58:08,490 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 23:58:08,490 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 23:58:08,491 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 23:58:08,491 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 23:58:08,492 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 23:58:08,492 INFO L138 SettingsManager]: * User list type=DISABLED [2023-03-31 23:58:08,492 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-03-31 23:58:08,492 INFO L138 SettingsManager]: * Explicit value domain=true [2023-03-31 23:58:08,492 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-03-31 23:58:08,493 INFO L138 SettingsManager]: * Octagon Domain=false [2023-03-31 23:58:08,493 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-03-31 23:58:08,493 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-03-31 23:58:08,493 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-03-31 23:58:08,494 INFO L138 SettingsManager]: * Interval Domain=false [2023-03-31 23:58:08,494 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-03-31 23:58:08,494 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-03-31 23:58:08,494 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-03-31 23:58:08,495 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 23:58:08,495 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 23:58:08,495 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 23:58:08,495 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 23:58:08,495 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 23:58:08,496 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 23:58:08,496 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 23:58:08,496 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 23:58:08,496 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 23:58:08,496 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 23:58:08,496 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 23:58:08,496 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 23:58:08,497 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 23:58:08,497 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 23:58:08,497 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 23:58:08,497 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 23:58:08,498 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-03-31 23:58:08,498 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 23:58:08,498 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 23:58:08,498 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-03-31 23:58:08,498 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 23:58:08,498 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 23:58:08,498 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-03-31 23:58:08,499 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> IntervalDomain [2023-03-31 23:58:08,748 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 23:58:08,775 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 23:58:08,777 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 23:58:08,779 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 23:58:08,780 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 23:58:08,781 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec4_product63.cil.c [2023-03-31 23:58:09,930 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 23:58:10,178 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 23:58:10,179 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec4_product63.cil.c [2023-03-31 23:58:10,190 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/887dfe7b5/ad2409e4b3e4433cba34bc592c1ac06b/FLAGf131719d1 [2023-03-31 23:58:10,207 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/887dfe7b5/ad2409e4b3e4433cba34bc592c1ac06b [2023-03-31 23:58:10,209 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 23:58:10,210 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 23:58:10,214 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 23:58:10,214 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 23:58:10,217 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 23:58:10,217 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 11:58:10" (1/1) ... [2023-03-31 23:58:10,218 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a37b827 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:58:10, skipping insertion in model container [2023-03-31 23:58:10,219 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 11:58:10" (1/1) ... [2023-03-31 23:58:10,225 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 23:58:10,271 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 23:58:10,582 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec4_product63.cil.c[15018,15031] [2023-03-31 23:58:10,614 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 23:58:10,628 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 23:58:10,694 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec4_product63.cil.c[15018,15031] [2023-03-31 23:58:10,700 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 23:58:10,720 INFO L208 MainTranslator]: Completed translation [2023-03-31 23:58:10,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:58:10 WrapperNode [2023-03-31 23:58:10,720 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 23:58:10,722 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 23:58:10,722 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 23:58:10,722 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 23:58:10,732 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:58:10" (1/1) ... [2023-03-31 23:58:10,732 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:58:10" (1/1) ... [2023-03-31 23:58:10,753 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:58:10" (1/1) ... [2023-03-31 23:58:10,753 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:58:10" (1/1) ... [2023-03-31 23:58:10,790 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:58:10" (1/1) ... [2023-03-31 23:58:10,806 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:58:10" (1/1) ... [2023-03-31 23:58:10,809 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:58:10" (1/1) ... [2023-03-31 23:58:10,811 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:58:10" (1/1) ... [2023-03-31 23:58:10,816 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 23:58:10,817 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 23:58:10,817 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 23:58:10,817 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 23:58:10,818 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:58:10" (1/1) ... [2023-03-31 23:58:10,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 23:58:10,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 23:58:10,854 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) [2023-03-31 23:58:10,872 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 [2023-03-31 23:58:10,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 23:58:10,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 23:58:10,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2023-03-31 23:58:10,891 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 23:58:10,892 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2023-03-31 23:58:10,893 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2023-03-31 23:58:10,893 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2023-03-31 23:58:10,893 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2023-03-31 23:58:10,893 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2023-03-31 23:58:10,893 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2023-03-31 23:58:10,893 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-03-31 23:58:10,893 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2023-03-31 23:58:10,893 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2023-03-31 23:58:10,893 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2023-03-31 23:58:10,894 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 23:58:10,894 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2023-03-31 23:58:10,894 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2023-03-31 23:58:10,894 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2023-03-31 23:58:10,894 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2023-03-31 23:58:10,894 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2023-03-31 23:58:10,894 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2023-03-31 23:58:10,894 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2023-03-31 23:58:10,894 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2023-03-31 23:58:10,894 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2023-03-31 23:58:10,895 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2023-03-31 23:58:10,895 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2023-03-31 23:58:10,895 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2023-03-31 23:58:10,895 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2023-03-31 23:58:10,895 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-03-31 23:58:10,895 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-03-31 23:58:10,895 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2023-03-31 23:58:10,895 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2023-03-31 23:58:10,895 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2023-03-31 23:58:10,896 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2023-03-31 23:58:10,896 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2023-03-31 23:58:10,896 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2023-03-31 23:58:10,896 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2023-03-31 23:58:10,896 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2023-03-31 23:58:10,896 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2023-03-31 23:58:10,896 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2023-03-31 23:58:10,896 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2023-03-31 23:58:10,896 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2023-03-31 23:58:10,896 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2023-03-31 23:58:10,897 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2023-03-31 23:58:10,897 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 23:58:10,898 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 23:58:10,898 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 23:58:10,898 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 23:58:10,899 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-03-31 23:58:10,899 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2023-03-31 23:58:10,899 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-03-31 23:58:10,899 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-03-31 23:58:10,899 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2023-03-31 23:58:10,899 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-03-31 23:58:10,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-03-31 23:58:10,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 23:58:10,900 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-03-31 23:58:10,900 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2023-03-31 23:58:10,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 23:58:10,901 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2023-03-31 23:58:10,902 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2023-03-31 23:58:10,902 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 23:58:10,902 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2023-03-31 23:58:10,902 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2023-03-31 23:58:10,902 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2023-03-31 23:58:10,902 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-03-31 23:58:10,902 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-03-31 23:58:10,902 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2023-03-31 23:58:10,903 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2023-03-31 23:58:10,903 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2023-03-31 23:58:10,903 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2023-03-31 23:58:10,903 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2023-03-31 23:58:10,903 INFO L130 BoogieDeclarations]: Found specification of procedure test [2023-03-31 23:58:10,903 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2023-03-31 23:58:10,903 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2023-03-31 23:58:10,903 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2023-03-31 23:58:10,903 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2023-03-31 23:58:10,903 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 23:58:10,904 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2023-03-31 23:58:10,904 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-03-31 23:58:10,904 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2023-03-31 23:58:10,904 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2023-03-31 23:58:10,905 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2023-03-31 23:58:10,905 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2023-03-31 23:58:10,905 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2023-03-31 23:58:10,905 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2023-03-31 23:58:10,906 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2023-03-31 23:58:10,906 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2023-03-31 23:58:10,906 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2023-03-31 23:58:10,906 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2023-03-31 23:58:10,906 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2023-03-31 23:58:10,906 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2023-03-31 23:58:10,907 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2023-03-31 23:58:10,907 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2023-03-31 23:58:10,907 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2023-03-31 23:58:10,907 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2023-03-31 23:58:10,907 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2023-03-31 23:58:10,907 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2023-03-31 23:58:10,907 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2023-03-31 23:58:10,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 23:58:10,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 23:58:10,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 23:58:11,086 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 23:58:11,088 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 23:58:11,631 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 23:58:11,815 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 23:58:11,816 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-03-31 23:58:11,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 11:58:11 BoogieIcfgContainer [2023-03-31 23:58:11,818 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 23:58:11,820 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 23:58:11,820 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 23:58:11,823 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 23:58:11,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 11:58:10" (1/3) ... [2023-03-31 23:58:11,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d2be76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 11:58:11, skipping insertion in model container [2023-03-31 23:58:11,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:58:10" (2/3) ... [2023-03-31 23:58:11,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d2be76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 11:58:11, skipping insertion in model container [2023-03-31 23:58:11,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 11:58:11" (3/3) ... [2023-03-31 23:58:11,827 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product63.cil.c [2023-03-31 23:58:11,843 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 23:58:11,843 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 23:58:11,904 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 23:58:11,912 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;@5c6cd2b6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-03-31 23:58:11,914 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 23:58:11,919 INFO L276 IsEmpty]: Start isEmpty. Operand has 169 states, 79 states have (on average 1.2784810126582278) internal successors, (101), 96 states have internal predecessors, (101), 54 states have call successors, (54), 33 states have call predecessors, (54), 33 states have return successors, (54), 48 states have call predecessors, (54), 54 states have call successors, (54) [2023-03-31 23:58:11,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-03-31 23:58:11,932 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:58:11,933 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:58:11,934 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:58:11,941 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:58:11,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1769465352, now seen corresponding path program 1 times [2023-03-31 23:58:11,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:58:11,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483999183] [2023-03-31 23:58:11,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:58:11,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:58:12,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:58:12,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 23:58:12,199 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:58:12,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483999183] [2023-03-31 23:58:12,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483999183] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:58:12,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 23:58:12,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-03-31 23:58:12,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256422439] [2023-03-31 23:58:12,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:58:12,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-03-31 23:58:12,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:58:12,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-03-31 23:58:12,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-03-31 23:58:12,246 INFO L87 Difference]: Start difference. First operand has 169 states, 79 states have (on average 1.2784810126582278) internal successors, (101), 96 states have internal predecessors, (101), 54 states have call successors, (54), 33 states have call predecessors, (54), 33 states have return successors, (54), 48 states have call predecessors, (54), 54 states have call successors, (54) Second operand has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-03-31 23:58:12,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:58:12,346 INFO L93 Difference]: Finished difference Result 271 states and 332 transitions. [2023-03-31 23:58:12,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-03-31 23:58:12,348 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 42 [2023-03-31 23:58:12,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:58:12,358 INFO L225 Difference]: With dead ends: 271 [2023-03-31 23:58:12,358 INFO L226 Difference]: Without dead ends: 136 [2023-03-31 23:58:12,363 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 [2023-03-31 23:58:12,366 INFO L413 NwaCegarLoop]: 152 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, 152 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-31 23:58:12,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 152 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 23:58:12,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2023-03-31 23:58:12,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2023-03-31 23:58:12,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 70 states have (on average 1.2428571428571429) internal successors, (87), 84 states have internal predecessors, (87), 39 states have call successors, (39), 31 states have call predecessors, (39), 26 states have return successors, (34), 28 states have call predecessors, (34), 34 states have call successors, (34) [2023-03-31 23:58:12,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 160 transitions. [2023-03-31 23:58:12,426 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 160 transitions. Word has length 42 [2023-03-31 23:58:12,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:58:12,426 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 160 transitions. [2023-03-31 23:58:12,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-03-31 23:58:12,428 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 160 transitions. [2023-03-31 23:58:12,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-03-31 23:58:12,433 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:58:12,433 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:58:12,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 23:58:12,436 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:58:12,437 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:58:12,437 INFO L85 PathProgramCache]: Analyzing trace with hash 898955910, now seen corresponding path program 1 times [2023-03-31 23:58:12,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:58:12,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033674788] [2023-03-31 23:58:12,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:58:12,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:58:12,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:58:12,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 23:58:12,590 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:58:12,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033674788] [2023-03-31 23:58:12,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033674788] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:58:12,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 23:58:12,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-03-31 23:58:12,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050244120] [2023-03-31 23:58:12,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:58:12,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-31 23:58:12,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:58:12,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-31 23:58:12,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-31 23:58:12,596 INFO L87 Difference]: Start difference. First operand 136 states and 160 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-03-31 23:58:12,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:58:12,669 INFO L93 Difference]: Finished difference Result 222 states and 260 transitions. [2023-03-31 23:58:12,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-31 23:58:12,669 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 43 [2023-03-31 23:58:12,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:58:12,672 INFO L225 Difference]: With dead ends: 222 [2023-03-31 23:58:12,672 INFO L226 Difference]: Without dead ends: 128 [2023-03-31 23:58:12,678 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 [2023-03-31 23:58:12,680 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 11 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-31 23:58:12,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 248 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 23:58:12,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2023-03-31 23:58:12,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2023-03-31 23:58:12,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 65 states have (on average 1.2461538461538462) internal successors, (81), 79 states have internal predecessors, (81), 36 states have call successors, (36), 30 states have call predecessors, (36), 26 states have return successors, (32), 26 states have call predecessors, (32), 32 states have call successors, (32) [2023-03-31 23:58:12,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 149 transitions. [2023-03-31 23:58:12,697 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 149 transitions. Word has length 43 [2023-03-31 23:58:12,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:58:12,697 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 149 transitions. [2023-03-31 23:58:12,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-03-31 23:58:12,697 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 149 transitions. [2023-03-31 23:58:12,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-03-31 23:58:12,699 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:58:12,699 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:58:12,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-31 23:58:12,699 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:58:12,699 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:58:12,700 INFO L85 PathProgramCache]: Analyzing trace with hash -2146183357, now seen corresponding path program 1 times [2023-03-31 23:58:12,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:58:12,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772163388] [2023-03-31 23:58:12,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:58:12,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:58:12,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:58:12,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 23:58:12,932 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:58:12,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772163388] [2023-03-31 23:58:12,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772163388] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:58:12,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 23:58:12,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-03-31 23:58:12,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990284676] [2023-03-31 23:58:12,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:58:12,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-03-31 23:58:12,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:58:12,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-03-31 23:58:12,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-03-31 23:58:12,934 INFO L87 Difference]: Start difference. First operand 128 states and 149 transitions. Second operand has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 4 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-03-31 23:58:13,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:58:13,305 INFO L93 Difference]: Finished difference Result 384 states and 460 transitions. [2023-03-31 23:58:13,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 23:58:13,305 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 4 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 46 [2023-03-31 23:58:13,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:58:13,308 INFO L225 Difference]: With dead ends: 384 [2023-03-31 23:58:13,309 INFO L226 Difference]: Without dead ends: 278 [2023-03-31 23:58:13,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-03-31 23:58:13,310 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 251 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-03-31 23:58:13,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 597 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-03-31 23:58:13,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2023-03-31 23:58:13,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 270. [2023-03-31 23:58:13,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 143 states have (on average 1.2727272727272727) internal successors, (182), 171 states have internal predecessors, (182), 72 states have call successors, (72), 60 states have call predecessors, (72), 54 states have return successors, (69), 52 states have call predecessors, (69), 68 states have call successors, (69) [2023-03-31 23:58:13,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 323 transitions. [2023-03-31 23:58:13,360 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 323 transitions. Word has length 46 [2023-03-31 23:58:13,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:58:13,360 INFO L495 AbstractCegarLoop]: Abstraction has 270 states and 323 transitions. [2023-03-31 23:58:13,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 4 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-03-31 23:58:13,361 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 323 transitions. [2023-03-31 23:58:13,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-03-31 23:58:13,362 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:58:13,362 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:58:13,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-03-31 23:58:13,363 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:58:13,363 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:58:13,363 INFO L85 PathProgramCache]: Analyzing trace with hash 690955090, now seen corresponding path program 1 times [2023-03-31 23:58:13,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:58:13,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920118869] [2023-03-31 23:58:13,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:58:13,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:58:13,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:58:13,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 23:58:13,647 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:58:13,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920118869] [2023-03-31 23:58:13,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920118869] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:58:13,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 23:58:13,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-03-31 23:58:13,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524325332] [2023-03-31 23:58:13,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:58:13,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-03-31 23:58:13,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:58:13,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-03-31 23:58:13,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-03-31 23:58:13,649 INFO L87 Difference]: Start difference. First operand 270 states and 323 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 4 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-03-31 23:58:14,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:58:14,509 INFO L93 Difference]: Finished difference Result 1102 states and 1512 transitions. [2023-03-31 23:58:14,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-03-31 23:58:14,510 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 4 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 51 [2023-03-31 23:58:14,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:58:14,522 INFO L225 Difference]: With dead ends: 1102 [2023-03-31 23:58:14,522 INFO L226 Difference]: Without dead ends: 854 [2023-03-31 23:58:14,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=148, Invalid=502, Unknown=0, NotChecked=0, Total=650 [2023-03-31 23:58:14,535 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 464 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 756 mSolverCounterSat, 349 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 1105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 349 IncrementalHoareTripleChecker+Valid, 756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-03-31 23:58:14,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [488 Valid, 528 Invalid, 1105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [349 Valid, 756 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-03-31 23:58:14,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2023-03-31 23:58:14,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 774. [2023-03-31 23:58:14,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 774 states, 454 states have (on average 1.2577092511013215) internal successors, (571), 504 states have internal predecessors, (571), 167 states have call successors, (167), 138 states have call predecessors, (167), 152 states have return successors, (262), 164 states have call predecessors, (262), 163 states have call successors, (262) [2023-03-31 23:58:14,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 774 states to 774 states and 1000 transitions. [2023-03-31 23:58:14,683 INFO L78 Accepts]: Start accepts. Automaton has 774 states and 1000 transitions. Word has length 51 [2023-03-31 23:58:14,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:58:14,685 INFO L495 AbstractCegarLoop]: Abstraction has 774 states and 1000 transitions. [2023-03-31 23:58:14,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 4 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-03-31 23:58:14,685 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states and 1000 transitions. [2023-03-31 23:58:14,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-03-31 23:58:14,692 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:58:14,692 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:58:14,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-03-31 23:58:14,693 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:58:14,693 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:58:14,693 INFO L85 PathProgramCache]: Analyzing trace with hash -166549922, now seen corresponding path program 1 times [2023-03-31 23:58:14,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:58:14,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395879385] [2023-03-31 23:58:14,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:58:14,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:58:14,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:58:14,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 23:58:14,792 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:58:14,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395879385] [2023-03-31 23:58:14,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395879385] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:58:14,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 23:58:14,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-03-31 23:58:14,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647600128] [2023-03-31 23:58:14,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:58:14,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 23:58:14,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:58:14,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 23:58:14,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 23:58:14,794 INFO L87 Difference]: Start difference. First operand 774 states and 1000 transitions. Second operand has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-03-31 23:58:14,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:58:14,988 INFO L93 Difference]: Finished difference Result 1349 states and 1707 transitions. [2023-03-31 23:58:14,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-03-31 23:58:14,988 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 54 [2023-03-31 23:58:14,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:58:14,992 INFO L225 Difference]: With dead ends: 1349 [2023-03-31 23:58:14,992 INFO L226 Difference]: Without dead ends: 750 [2023-03-31 23:58:14,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-03-31 23:58:14,995 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 104 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 23:58:14,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 535 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 23:58:14,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2023-03-31 23:58:15,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 672. [2023-03-31 23:58:15,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 672 states, 384 states have (on average 1.1979166666666667) internal successors, (460), 415 states have internal predecessors, (460), 137 states have call successors, (137), 131 states have call predecessors, (137), 150 states have return successors, (192), 143 states have call predecessors, (192), 133 states have call successors, (192) [2023-03-31 23:58:15,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 789 transitions. [2023-03-31 23:58:15,055 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 789 transitions. Word has length 54 [2023-03-31 23:58:15,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:58:15,055 INFO L495 AbstractCegarLoop]: Abstraction has 672 states and 789 transitions. [2023-03-31 23:58:15,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-03-31 23:58:15,056 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 789 transitions. [2023-03-31 23:58:15,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-03-31 23:58:15,059 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:58:15,060 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:58:15,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-03-31 23:58:15,060 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:58:15,060 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:58:15,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1395263698, now seen corresponding path program 1 times [2023-03-31 23:58:15,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:58:15,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154686463] [2023-03-31 23:58:15,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:58:15,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:58:15,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:58:15,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 23:58:15,504 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:58:15,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154686463] [2023-03-31 23:58:15,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154686463] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:58:15,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 23:58:15,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-03-31 23:58:15,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330175154] [2023-03-31 23:58:15,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:58:15,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-03-31 23:58:15,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:58:15,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-03-31 23:58:15,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-03-31 23:58:15,506 INFO L87 Difference]: Start difference. First operand 672 states and 789 transitions. Second operand has 11 states, 9 states have (on average 5.444444444444445) internal successors, (49), 8 states have internal predecessors, (49), 5 states have call successors, (23), 6 states have call predecessors, (23), 4 states have return successors, (17), 6 states have call predecessors, (17), 4 states have call successors, (17) [2023-03-31 23:58:17,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:58:17,057 INFO L93 Difference]: Finished difference Result 1907 states and 2400 transitions. [2023-03-31 23:58:17,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-03-31 23:58:17,058 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 5.444444444444445) internal successors, (49), 8 states have internal predecessors, (49), 5 states have call successors, (23), 6 states have call predecessors, (23), 4 states have return successors, (17), 6 states have call predecessors, (17), 4 states have call successors, (17) Word has length 89 [2023-03-31 23:58:17,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:58:17,067 INFO L225 Difference]: With dead ends: 1907 [2023-03-31 23:58:17,068 INFO L226 Difference]: Without dead ends: 1493 [2023-03-31 23:58:17,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 401 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=316, Invalid=1244, Unknown=0, NotChecked=0, Total=1560 [2023-03-31 23:58:17,071 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 701 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 1449 mSolverCounterSat, 484 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 727 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 1933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 484 IncrementalHoareTripleChecker+Valid, 1449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-03-31 23:58:17,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [727 Valid, 434 Invalid, 1933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [484 Valid, 1449 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-03-31 23:58:17,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1493 states. [2023-03-31 23:58:17,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1493 to 1281. [2023-03-31 23:58:17,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1281 states, 745 states have (on average 1.185234899328859) internal successors, (883), 802 states have internal predecessors, (883), 253 states have call successors, (253), 245 states have call predecessors, (253), 282 states have return successors, (347), 268 states have call predecessors, (347), 249 states have call successors, (347) [2023-03-31 23:58:17,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1281 states to 1281 states and 1483 transitions. [2023-03-31 23:58:17,247 INFO L78 Accepts]: Start accepts. Automaton has 1281 states and 1483 transitions. Word has length 89 [2023-03-31 23:58:17,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:58:17,249 INFO L495 AbstractCegarLoop]: Abstraction has 1281 states and 1483 transitions. [2023-03-31 23:58:17,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 5.444444444444445) internal successors, (49), 8 states have internal predecessors, (49), 5 states have call successors, (23), 6 states have call predecessors, (23), 4 states have return successors, (17), 6 states have call predecessors, (17), 4 states have call successors, (17) [2023-03-31 23:58:17,249 INFO L276 IsEmpty]: Start isEmpty. Operand 1281 states and 1483 transitions. [2023-03-31 23:58:17,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-03-31 23:58:17,257 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:58:17,257 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-03-31 23:58:17,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-03-31 23:58:17,257 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:58:17,258 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:58:17,258 INFO L85 PathProgramCache]: Analyzing trace with hash -454564876, now seen corresponding path program 1 times [2023-03-31 23:58:17,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:58:17,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375190244] [2023-03-31 23:58:17,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:58:17,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:58:17,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:58:17,409 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-03-31 23:58:17,409 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:58:17,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375190244] [2023-03-31 23:58:17,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375190244] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 23:58:17,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246981761] [2023-03-31 23:58:17,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:58:17,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 23:58:17,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 23:58:17,417 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) [2023-03-31 23:58:17,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-03-31 23:58:17,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:58:17,587 INFO L262 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-31 23:58:17,596 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 23:58:17,700 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 23:58:17,700 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-31 23:58:17,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [246981761] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:58:17,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-31 23:58:17,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2023-03-31 23:58:17,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382235562] [2023-03-31 23:58:17,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:58:17,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-31 23:58:17,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:58:17,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-31 23:58:17,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-03-31 23:58:17,702 INFO L87 Difference]: Start difference. First operand 1281 states and 1483 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2023-03-31 23:58:17,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:58:17,851 INFO L93 Difference]: Finished difference Result 2015 states and 2364 transitions. [2023-03-31 23:58:17,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-31 23:58:17,852 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) Word has length 150 [2023-03-31 23:58:17,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:58:17,857 INFO L225 Difference]: With dead ends: 2015 [2023-03-31 23:58:17,857 INFO L226 Difference]: Without dead ends: 1127 [2023-03-31 23:58:17,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-03-31 23:58:17,860 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 61 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-31 23:58:17,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 277 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 23:58:17,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1127 states. [2023-03-31 23:58:17,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1127 to 1119. [2023-03-31 23:58:17,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1119 states, 652 states have (on average 1.1687116564417177) internal successors, (762), 704 states have internal predecessors, (762), 218 states have call successors, (218), 212 states have call predecessors, (218), 248 states have return successors, (270), 235 states have call predecessors, (270), 214 states have call successors, (270) [2023-03-31 23:58:17,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 1250 transitions. [2023-03-31 23:58:17,986 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 1250 transitions. Word has length 150 [2023-03-31 23:58:17,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:58:17,986 INFO L495 AbstractCegarLoop]: Abstraction has 1119 states and 1250 transitions. [2023-03-31 23:58:17,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2023-03-31 23:58:17,987 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 1250 transitions. [2023-03-31 23:58:17,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-03-31 23:58:17,990 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:58:17,990 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:58:18,000 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-03-31 23:58:18,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 23:58:18,197 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:58:18,197 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:58:18,197 INFO L85 PathProgramCache]: Analyzing trace with hash 237094354, now seen corresponding path program 1 times [2023-03-31 23:58:18,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:58:18,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67236365] [2023-03-31 23:58:18,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:58:18,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:58:18,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:58:18,700 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-03-31 23:58:18,700 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:58:18,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67236365] [2023-03-31 23:58:18,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67236365] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 23:58:18,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610971611] [2023-03-31 23:58:18,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:58:18,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 23:58:18,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 23:58:18,705 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) [2023-03-31 23:58:18,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-03-31 23:58:18,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:58:18,848 INFO L262 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 33 conjunts are in the unsatisfiable core [2023-03-31 23:58:18,853 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 23:58:19,192 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 23:58:19,192 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-31 23:58:19,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [610971611] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:58:19,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-31 23:58:19,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [14] total 22 [2023-03-31 23:58:19,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937001646] [2023-03-31 23:58:19,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:58:19,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-03-31 23:58:19,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:58:19,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-03-31 23:58:19,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2023-03-31 23:58:19,195 INFO L87 Difference]: Start difference. First operand 1119 states and 1250 transitions. Second operand has 14 states, 11 states have (on average 7.636363636363637) internal successors, (84), 11 states have internal predecessors, (84), 6 states have call successors, (34), 5 states have call predecessors, (34), 7 states have return successors, (28), 7 states have call predecessors, (28), 6 states have call successors, (28) [2023-03-31 23:58:20,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:58:20,516 INFO L93 Difference]: Finished difference Result 2580 states and 3031 transitions. [2023-03-31 23:58:20,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-03-31 23:58:20,516 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 7.636363636363637) internal successors, (84), 11 states have internal predecessors, (84), 6 states have call successors, (34), 5 states have call predecessors, (34), 7 states have return successors, (28), 7 states have call predecessors, (28), 6 states have call successors, (28) Word has length 146 [2023-03-31 23:58:20,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:58:20,524 INFO L225 Difference]: With dead ends: 2580 [2023-03-31 23:58:20,524 INFO L226 Difference]: Without dead ends: 1483 [2023-03-31 23:58:20,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 372 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=220, Invalid=1420, Unknown=0, NotChecked=0, Total=1640 [2023-03-31 23:58:20,530 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 277 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 1594 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 1717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 1594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-03-31 23:58:20,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [310 Valid, 372 Invalid, 1717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 1594 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-03-31 23:58:20,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1483 states. [2023-03-31 23:58:20,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1483 to 1456. [2023-03-31 23:58:20,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1456 states, 875 states have (on average 1.1737142857142857) internal successors, (1027), 934 states have internal predecessors, (1027), 287 states have call successors, (287), 283 states have call predecessors, (287), 293 states have return successors, (361), 290 states have call predecessors, (361), 283 states have call successors, (361) [2023-03-31 23:58:20,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1456 states to 1456 states and 1675 transitions. [2023-03-31 23:58:20,660 INFO L78 Accepts]: Start accepts. Automaton has 1456 states and 1675 transitions. Word has length 146 [2023-03-31 23:58:20,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:58:20,660 INFO L495 AbstractCegarLoop]: Abstraction has 1456 states and 1675 transitions. [2023-03-31 23:58:20,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 7.636363636363637) internal successors, (84), 11 states have internal predecessors, (84), 6 states have call successors, (34), 5 states have call predecessors, (34), 7 states have return successors, (28), 7 states have call predecessors, (28), 6 states have call successors, (28) [2023-03-31 23:58:20,661 INFO L276 IsEmpty]: Start isEmpty. Operand 1456 states and 1675 transitions. [2023-03-31 23:58:20,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-03-31 23:58:20,664 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:58:20,664 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:58:20,673 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-03-31 23:58:20,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-03-31 23:58:20,873 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:58:20,874 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:58:20,875 INFO L85 PathProgramCache]: Analyzing trace with hash -331660986, now seen corresponding path program 1 times [2023-03-31 23:58:20,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:58:20,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356444585] [2023-03-31 23:58:20,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:58:20,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:58:20,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:58:21,279 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-03-31 23:58:21,280 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:58:21,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356444585] [2023-03-31 23:58:21,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356444585] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 23:58:21,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1435395857] [2023-03-31 23:58:21,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:58:21,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 23:58:21,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 23:58:21,281 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-31 23:58:21,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-03-31 23:58:21,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:58:21,427 INFO L262 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 51 conjunts are in the unsatisfiable core [2023-03-31 23:58:21,435 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 23:58:21,817 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-03-31 23:58:21,817 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 23:58:22,644 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-03-31 23:58:22,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1435395857] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 23:58:22,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1194731689] [2023-03-31 23:58:22,664 INFO L159 IcfgInterpreter]: Started Sifa with 114 locations of interest [2023-03-31 23:58:22,664 INFO L166 IcfgInterpreter]: Building call graph [2023-03-31 23:58:22,669 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-03-31 23:58:22,673 INFO L176 IcfgInterpreter]: Starting interpretation [2023-03-31 23:58:22,673 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-03-31 23:58:22,829 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 28 for LOIs [2023-03-31 23:58:22,863 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 32 for LOIs [2023-03-31 23:58:23,002 INFO L197 IcfgInterpreter]: Interpreting procedure runTest with input of size 32 for LOIs [2023-03-31 23:58:23,013 INFO L197 IcfgInterpreter]: Interpreting procedure test with input of size 32 for LOIs [2023-03-31 23:58:23,693 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 29 for LOIs [2023-03-31 23:58:23,699 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 36 for LOIs [2023-03-31 23:58:23,803 INFO L197 IcfgInterpreter]: Interpreting procedure lowerWaterLevel with input of size 36 for LOIs [2023-03-31 23:58:23,809 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment with input of size 29 for LOIs [2023-03-31 23:58:23,907 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__methaneQuery with input of size 26 for LOIs [2023-03-31 23:58:24,012 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 26 for LOIs [2023-03-31 23:58:24,084 INFO L197 IcfgInterpreter]: Interpreting procedure isHighWaterLevel with input of size 22 for LOIs [2023-03-31 23:58:24,105 INFO L197 IcfgInterpreter]: Interpreting procedure isHighWaterSensorDry with input of size 22 for LOIs [2023-03-31 23:58:24,109 INFO L197 IcfgInterpreter]: Interpreting procedure activatePump with input of size 34 for LOIs [2023-03-31 23:58:24,154 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneAlarm with input of size 24 for LOIs [2023-03-31 23:58:24,178 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 24 for LOIs [2023-03-31 23:58:24,183 INFO L197 IcfgInterpreter]: Interpreting procedure activatePump__wrappee__lowWaterSensor with input of size 24 for LOIs [2023-03-31 23:58:24,186 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 23 for LOIs [2023-03-31 23:58:24,187 INFO L197 IcfgInterpreter]: Interpreting procedure isLowWaterLevel with input of size 23 for LOIs [2023-03-31 23:58:24,205 INFO L197 IcfgInterpreter]: Interpreting procedure isLowWaterSensorDry with input of size 23 for LOIs [2023-03-31 23:58:24,209 INFO L197 IcfgInterpreter]: Interpreting procedure setup with input of size 24 for LOIs [2023-03-31 23:58:24,210 INFO L197 IcfgInterpreter]: Interpreting procedure select_features with input of size 24 for LOIs [2023-03-31 23:58:24,212 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification4_spec__1 with input of size 20 for LOIs [2023-03-31 23:58:24,243 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 20 for LOIs [2023-03-31 23:58:24,245 INFO L197 IcfgInterpreter]: Interpreting procedure __automaton_fail with input of size 30 for LOIs [2023-03-31 23:58:24,248 INFO L197 IcfgInterpreter]: Interpreting procedure getWaterLevel with input of size 20 for LOIs [2023-03-31 23:58:24,250 INFO L197 IcfgInterpreter]: Interpreting procedure valid_product with input of size 24 for LOIs [2023-03-31 23:58:24,253 INFO L197 IcfgInterpreter]: Interpreting procedure select_helpers with input of size 24 for LOIs [2023-03-31 23:58:24,254 INFO L180 IcfgInterpreter]: Interpretation finished [2023-03-31 23:58:28,045 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '24446#(and (= ~methaneLevelCritical~0 0) (= ~head~0.offset 0) (= 1 ~systemActive~0) (= ~head~0.base 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2023-03-31 23:58:28,046 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-03-31 23:58:28,046 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-31 23:58:28,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 15, 17] total 36 [2023-03-31 23:58:28,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717977357] [2023-03-31 23:58:28,046 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-31 23:58:28,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-03-31 23:58:28,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:58:28,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-03-31 23:58:28,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=553, Invalid=7279, Unknown=0, NotChecked=0, Total=7832 [2023-03-31 23:58:28,051 INFO L87 Difference]: Start difference. First operand 1456 states and 1675 transitions. Second operand has 36 states, 25 states have (on average 6.0) internal successors, (150), 29 states have internal predecessors, (150), 11 states have call successors, (68), 12 states have call predecessors, (68), 18 states have return successors, (60), 18 states have call predecessors, (60), 11 states have call successors, (60) [2023-03-31 23:58:31,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:58:31,416 INFO L93 Difference]: Finished difference Result 5641 states and 7338 transitions. [2023-03-31 23:58:31,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-03-31 23:58:31,417 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 25 states have (on average 6.0) internal successors, (150), 29 states have internal predecessors, (150), 11 states have call successors, (68), 12 states have call predecessors, (68), 18 states have return successors, (60), 18 states have call predecessors, (60), 11 states have call successors, (60) Word has length 149 [2023-03-31 23:58:31,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:58:31,440 INFO L225 Difference]: With dead ends: 5641 [2023-03-31 23:58:31,440 INFO L226 Difference]: Without dead ends: 4901 [2023-03-31 23:58:31,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 507 GetRequests, 362 SyntacticMatches, 21 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7602 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=1225, Invalid=14525, Unknown=0, NotChecked=0, Total=15750 [2023-03-31 23:58:31,451 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 1210 mSDsluCounter, 1104 mSDsCounter, 0 mSdLazyCounter, 3994 mSolverCounterSat, 934 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1262 SdHoareTripleChecker+Valid, 1202 SdHoareTripleChecker+Invalid, 4928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 934 IncrementalHoareTripleChecker+Valid, 3994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-03-31 23:58:31,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1262 Valid, 1202 Invalid, 4928 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [934 Valid, 3994 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-03-31 23:58:31,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4901 states. [2023-03-31 23:58:31,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4901 to 4106. [2023-03-31 23:58:31,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4106 states, 2469 states have (on average 1.1713244228432564) internal successors, (2892), 2624 states have internal predecessors, (2892), 812 states have call successors, (812), 796 states have call predecessors, (812), 824 states have return successors, (1116), 815 states have call predecessors, (1116), 808 states have call successors, (1116) [2023-03-31 23:58:31,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4106 states to 4106 states and 4820 transitions. [2023-03-31 23:58:31,849 INFO L78 Accepts]: Start accepts. Automaton has 4106 states and 4820 transitions. Word has length 149 [2023-03-31 23:58:31,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:58:31,850 INFO L495 AbstractCegarLoop]: Abstraction has 4106 states and 4820 transitions. [2023-03-31 23:58:31,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 25 states have (on average 6.0) internal successors, (150), 29 states have internal predecessors, (150), 11 states have call successors, (68), 12 states have call predecessors, (68), 18 states have return successors, (60), 18 states have call predecessors, (60), 11 states have call successors, (60) [2023-03-31 23:58:31,850 INFO L276 IsEmpty]: Start isEmpty. Operand 4106 states and 4820 transitions. [2023-03-31 23:58:31,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2023-03-31 23:58:31,857 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:58:31,857 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:58:31,866 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-03-31 23:58:32,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 23:58:32,065 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:58:32,066 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:58:32,066 INFO L85 PathProgramCache]: Analyzing trace with hash 2039256926, now seen corresponding path program 2 times [2023-03-31 23:58:32,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:58:32,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131589961] [2023-03-31 23:58:32,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:58:32,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:58:32,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:58:32,826 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 37 proven. 20 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-03-31 23:58:32,826 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:58:32,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131589961] [2023-03-31 23:58:32,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131589961] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 23:58:32,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794888312] [2023-03-31 23:58:32,827 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-03-31 23:58:32,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 23:58:32,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 23:58:32,829 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-31 23:58:32,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-03-31 23:58:32,971 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-03-31 23:58:32,972 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-03-31 23:58:32,974 INFO L262 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 43 conjunts are in the unsatisfiable core [2023-03-31 23:58:32,982 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 23:58:33,374 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-03-31 23:58:33,375 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-31 23:58:33,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [794888312] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:58:33,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-31 23:58:33,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [17] total 27 [2023-03-31 23:58:33,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356872109] [2023-03-31 23:58:33,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:58:33,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-03-31 23:58:33,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:58:33,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-03-31 23:58:33,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=590, Unknown=0, NotChecked=0, Total=702 [2023-03-31 23:58:33,378 INFO L87 Difference]: Start difference. First operand 4106 states and 4820 transitions. Second operand has 12 states, 9 states have (on average 12.11111111111111) internal successors, (109), 8 states have internal predecessors, (109), 4 states have call successors, (44), 4 states have call predecessors, (44), 6 states have return successors, (40), 6 states have call predecessors, (40), 4 states have call successors, (40) [2023-03-31 23:58:34,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:58:34,393 INFO L93 Difference]: Finished difference Result 7808 states and 9206 transitions. [2023-03-31 23:58:34,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-03-31 23:58:34,394 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 12.11111111111111) internal successors, (109), 8 states have internal predecessors, (109), 4 states have call successors, (44), 4 states have call predecessors, (44), 6 states have return successors, (40), 6 states have call predecessors, (40), 4 states have call successors, (40) Word has length 209 [2023-03-31 23:58:34,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:58:34,418 INFO L225 Difference]: With dead ends: 7808 [2023-03-31 23:58:34,418 INFO L226 Difference]: Without dead ends: 4396 [2023-03-31 23:58:34,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=167, Invalid=825, Unknown=0, NotChecked=0, Total=992 [2023-03-31 23:58:34,429 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 130 mSDsluCounter, 945 mSDsCounter, 0 mSdLazyCounter, 1286 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 1183 SdHoareTripleChecker+Invalid, 1293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-03-31 23:58:34,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 1183 Invalid, 1293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1286 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-03-31 23:58:34,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4396 states. [2023-03-31 23:58:34,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4396 to 4259. [2023-03-31 23:58:34,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4259 states, 2563 states have (on average 1.167381974248927) internal successors, (2992), 2717 states have internal predecessors, (2992), 842 states have call successors, (842), 828 states have call predecessors, (842), 853 states have return successors, (1153), 843 states have call predecessors, (1153), 838 states have call successors, (1153) [2023-03-31 23:58:34,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4259 states to 4259 states and 4987 transitions. [2023-03-31 23:58:34,801 INFO L78 Accepts]: Start accepts. Automaton has 4259 states and 4987 transitions. Word has length 209 [2023-03-31 23:58:34,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:58:34,803 INFO L495 AbstractCegarLoop]: Abstraction has 4259 states and 4987 transitions. [2023-03-31 23:58:34,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 12.11111111111111) internal successors, (109), 8 states have internal predecessors, (109), 4 states have call successors, (44), 4 states have call predecessors, (44), 6 states have return successors, (40), 6 states have call predecessors, (40), 4 states have call successors, (40) [2023-03-31 23:58:34,803 INFO L276 IsEmpty]: Start isEmpty. Operand 4259 states and 4987 transitions. [2023-03-31 23:58:34,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2023-03-31 23:58:34,809 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:58:34,810 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2023-03-31 23:58:34,816 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-03-31 23:58:35,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 23:58:35,016 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:58:35,017 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:58:35,017 INFO L85 PathProgramCache]: Analyzing trace with hash 171955461, now seen corresponding path program 1 times [2023-03-31 23:58:35,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:58:35,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121057677] [2023-03-31 23:58:35,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:58:35,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:58:35,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:58:35,081 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 33 proven. 4 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-03-31 23:58:35,082 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:58:35,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121057677] [2023-03-31 23:58:35,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121057677] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 23:58:35,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [273114671] [2023-03-31 23:58:35,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:58:35,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 23:58:35,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 23:58:35,083 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-31 23:58:35,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-03-31 23:58:35,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:58:35,249 INFO L262 TraceCheckSpWp]: Trace formula consists of 689 conjuncts, 3 conjunts are in the unsatisfiable core [2023-03-31 23:58:35,252 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 23:58:35,261 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-03-31 23:58:35,261 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-31 23:58:35,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [273114671] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:58:35,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-31 23:58:35,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2023-03-31 23:58:35,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254497333] [2023-03-31 23:58:35,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:58:35,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-31 23:58:35,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:58:35,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-31 23:58:35,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 23:58:35,263 INFO L87 Difference]: Start difference. First operand 4259 states and 4987 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2023-03-31 23:58:35,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:58:35,455 INFO L93 Difference]: Finished difference Result 5038 states and 5965 transitions. [2023-03-31 23:58:35,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-31 23:58:35,455 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 214 [2023-03-31 23:58:35,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:58:35,464 INFO L225 Difference]: With dead ends: 5038 [2023-03-31 23:58:35,464 INFO L226 Difference]: Without dead ends: 1796 [2023-03-31 23:58:35,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 23:58:35,471 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 38 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-31 23:58:35,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 285 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 23:58:35,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1796 states. [2023-03-31 23:58:35,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1796 to 1570. [2023-03-31 23:58:35,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1570 states, 931 states have (on average 1.1095596133190118) internal successors, (1033), 969 states have internal predecessors, (1033), 317 states have call successors, (317), 312 states have call predecessors, (317), 321 states have return successors, (423), 319 states have call predecessors, (423), 313 states have call successors, (423) [2023-03-31 23:58:35,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 1773 transitions. [2023-03-31 23:58:35,658 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 1773 transitions. Word has length 214 [2023-03-31 23:58:35,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:58:35,659 INFO L495 AbstractCegarLoop]: Abstraction has 1570 states and 1773 transitions. [2023-03-31 23:58:35,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2023-03-31 23:58:35,659 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 1773 transitions. [2023-03-31 23:58:35,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2023-03-31 23:58:35,663 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:58:35,663 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2023-03-31 23:58:35,672 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-03-31 23:58:35,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-03-31 23:58:35,869 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:58:35,870 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:58:35,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1973482691, now seen corresponding path program 1 times [2023-03-31 23:58:35,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:58:35,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137870829] [2023-03-31 23:58:35,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:58:35,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:58:35,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:58:36,147 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 65 proven. 46 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-03-31 23:58:36,148 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:58:36,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137870829] [2023-03-31 23:58:36,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137870829] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 23:58:36,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236916158] [2023-03-31 23:58:36,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:58:36,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 23:58:36,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 23:58:36,149 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-31 23:58:36,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-03-31 23:58:36,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:58:36,374 INFO L262 TraceCheckSpWp]: Trace formula consists of 775 conjuncts, 56 conjunts are in the unsatisfiable core [2023-03-31 23:58:36,384 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 23:58:36,958 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 165 proven. 27 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-03-31 23:58:36,958 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 23:58:38,697 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 73 proven. 7 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2023-03-31 23:58:38,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [236916158] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 23:58:38,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1095382266] [2023-03-31 23:58:38,704 INFO L159 IcfgInterpreter]: Started Sifa with 117 locations of interest [2023-03-31 23:58:38,704 INFO L166 IcfgInterpreter]: Building call graph [2023-03-31 23:58:38,705 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-03-31 23:58:38,705 INFO L176 IcfgInterpreter]: Starting interpretation [2023-03-31 23:58:38,705 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-03-31 23:58:38,816 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 28 for LOIs [2023-03-31 23:58:38,839 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 32 for LOIs [2023-03-31 23:58:38,929 INFO L197 IcfgInterpreter]: Interpreting procedure runTest with input of size 32 for LOIs [2023-03-31 23:58:38,938 INFO L197 IcfgInterpreter]: Interpreting procedure test with input of size 32 for LOIs [2023-03-31 23:58:39,458 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 29 for LOIs [2023-03-31 23:58:39,464 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 36 for LOIs [2023-03-31 23:58:39,532 INFO L197 IcfgInterpreter]: Interpreting procedure lowerWaterLevel with input of size 36 for LOIs [2023-03-31 23:58:39,538 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment with input of size 29 for LOIs [2023-03-31 23:58:39,612 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__methaneQuery with input of size 26 for LOIs [2023-03-31 23:58:39,675 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 26 for LOIs [2023-03-31 23:58:39,741 INFO L197 IcfgInterpreter]: Interpreting procedure isHighWaterLevel with input of size 22 for LOIs [2023-03-31 23:58:39,776 INFO L197 IcfgInterpreter]: Interpreting procedure isHighWaterSensorDry with input of size 22 for LOIs [2023-03-31 23:58:39,781 INFO L197 IcfgInterpreter]: Interpreting procedure activatePump with input of size 34 for LOIs [2023-03-31 23:58:39,821 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneAlarm with input of size 24 for LOIs [2023-03-31 23:58:39,842 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 24 for LOIs [2023-03-31 23:58:39,847 INFO L197 IcfgInterpreter]: Interpreting procedure activatePump__wrappee__lowWaterSensor with input of size 24 for LOIs [2023-03-31 23:58:39,849 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 23 for LOIs [2023-03-31 23:58:39,851 INFO L197 IcfgInterpreter]: Interpreting procedure isLowWaterLevel with input of size 23 for LOIs [2023-03-31 23:58:39,867 INFO L197 IcfgInterpreter]: Interpreting procedure isLowWaterSensorDry with input of size 23 for LOIs [2023-03-31 23:58:39,870 INFO L197 IcfgInterpreter]: Interpreting procedure deactivatePump with input of size 33 for LOIs [2023-03-31 23:58:39,873 INFO L197 IcfgInterpreter]: Interpreting procedure setup with input of size 24 for LOIs [2023-03-31 23:58:39,875 INFO L197 IcfgInterpreter]: Interpreting procedure select_features with input of size 24 for LOIs [2023-03-31 23:58:39,876 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification4_spec__1 with input of size 20 for LOIs [2023-03-31 23:58:39,904 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 20 for LOIs [2023-03-31 23:58:39,906 INFO L197 IcfgInterpreter]: Interpreting procedure __automaton_fail with input of size 30 for LOIs [2023-03-31 23:58:39,909 INFO L197 IcfgInterpreter]: Interpreting procedure getWaterLevel with input of size 20 for LOIs [2023-03-31 23:58:39,910 INFO L197 IcfgInterpreter]: Interpreting procedure valid_product with input of size 24 for LOIs [2023-03-31 23:58:39,913 INFO L197 IcfgInterpreter]: Interpreting procedure select_helpers with input of size 24 for LOIs [2023-03-31 23:58:39,914 INFO L180 IcfgInterpreter]: Interpretation finished [2023-03-31 23:58:44,819 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '67527#(and (= ~methaneLevelCritical~0 0) (= ~head~0.offset 0) (= 1 ~systemActive~0) (= ~head~0.base 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2023-03-31 23:58:44,819 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-03-31 23:58:44,820 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-31 23:58:44,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 22, 14] total 42 [2023-03-31 23:58:44,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420581754] [2023-03-31 23:58:44,820 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-31 23:58:44,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-03-31 23:58:44,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:58:44,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-03-31 23:58:44,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=8624, Unknown=0, NotChecked=0, Total=9120 [2023-03-31 23:58:44,825 INFO L87 Difference]: Start difference. First operand 1570 states and 1773 transitions. Second operand has 42 states, 30 states have (on average 6.466666666666667) internal successors, (194), 30 states have internal predecessors, (194), 10 states have call successors, (70), 8 states have call predecessors, (70), 21 states have return successors, (83), 20 states have call predecessors, (83), 10 states have call successors, (83) [2023-03-31 23:58:49,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:58:49,351 INFO L93 Difference]: Finished difference Result 2303 states and 2638 transitions. [2023-03-31 23:58:49,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2023-03-31 23:58:49,352 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 30 states have (on average 6.466666666666667) internal successors, (194), 30 states have internal predecessors, (194), 10 states have call successors, (70), 8 states have call predecessors, (70), 21 states have return successors, (83), 20 states have call predecessors, (83), 10 states have call successors, (83) Word has length 251 [2023-03-31 23:58:49,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:58:49,352 INFO L225 Difference]: With dead ends: 2303 [2023-03-31 23:58:49,353 INFO L226 Difference]: Without dead ends: 0 [2023-03-31 23:58:49,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 842 GetRequests, 645 SyntacticMatches, 38 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10684 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=1542, Invalid=24218, Unknown=0, NotChecked=0, Total=25760 [2023-03-31 23:58:49,367 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 558 mSDsluCounter, 1988 mSDsCounter, 0 mSdLazyCounter, 7593 mSolverCounterSat, 487 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 558 SdHoareTripleChecker+Valid, 2083 SdHoareTripleChecker+Invalid, 8080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 487 IncrementalHoareTripleChecker+Valid, 7593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-03-31 23:58:49,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [558 Valid, 2083 Invalid, 8080 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [487 Valid, 7593 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-03-31 23:58:49,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-03-31 23:58:49,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-03-31 23:58:49,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-03-31 23:58:49,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-03-31 23:58:49,368 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 251 [2023-03-31 23:58:49,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:58:49,368 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-03-31 23:58:49,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 30 states have (on average 6.466666666666667) internal successors, (194), 30 states have internal predecessors, (194), 10 states have call successors, (70), 8 states have call predecessors, (70), 21 states have return successors, (83), 20 states have call predecessors, (83), 10 states have call successors, (83) [2023-03-31 23:58:49,369 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-03-31 23:58:49,369 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-03-31 23:58:49,371 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-03-31 23:58:49,378 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-03-31 23:58:49,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 23:58:49,580 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.