/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain EqDomain -i ../sv-benchmarks/c/product-lines/minepump_spec4_product20.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 12:04:16,538 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 12:04:16,540 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 12:04:16,578 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 12:04:16,578 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 12:04:16,581 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 12:04:16,583 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 12:04:16,585 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 12:04:16,587 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 12:04:16,591 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 12:04:16,593 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 12:04:16,594 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 12:04:16,595 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 12:04:16,597 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 12:04:16,598 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 12:04:16,599 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 12:04:16,599 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 12:04:16,600 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 12:04:16,602 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 12:04:16,606 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 12:04:16,607 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 12:04:16,608 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 12:04:16,609 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 12:04:16,611 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 12:04:16,618 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 12:04:16,618 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 12:04:16,618 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 12:04:16,620 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 12:04:16,620 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 12:04:16,621 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 12:04:16,621 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 12:04:16,621 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 12:04:16,623 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 12:04:16,623 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 12:04:16,624 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 12:04:16,624 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 12:04:16,624 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 12:04:16,625 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 12:04:16,625 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 12:04:16,625 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 12:04:16,626 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 12:04:16,627 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-01 12:04:16,655 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 12:04:16,655 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 12:04:16,656 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 12:04:16,656 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 12:04:16,657 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 12:04:16,657 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 12:04:16,657 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 12:04:16,657 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 12:04:16,658 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 12:04:16,658 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 12:04:16,658 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 12:04:16,659 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 12:04:16,659 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 12:04:16,659 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 12:04:16,659 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 12:04:16,659 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 12:04:16,659 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 12:04:16,660 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 12:04:16,660 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 12:04:16,660 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 12:04:16,660 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 12:04:16,661 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 12:04:16,661 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 12:04:16,661 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 12:04:16,661 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 12:04:16,661 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 12:04:16,661 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 12:04:16,661 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 12:04:16,662 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 12:04:16,662 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 12:04:16,662 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 12:04:16,662 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 12:04:16,662 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 12:04:16,662 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 12:04:16,663 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 12:04:16,663 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 12:04:16,663 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 12:04:16,663 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 12:04:16,663 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 12:04:16,663 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 12:04:16,663 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 12:04:16,664 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> EqDomain [2023-04-01 12:04:16,886 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 12:04:16,906 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 12:04:16,908 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 12:04:16,909 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 12:04:16,910 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 12:04:16,911 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec4_product20.cil.c [2023-04-01 12:04:18,057 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 12:04:18,308 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 12:04:18,309 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec4_product20.cil.c [2023-04-01 12:04:18,318 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ffc6dbee1/afbf9c1d004e404db8586b19e96d7923/FLAG06cbab94f [2023-04-01 12:04:18,340 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ffc6dbee1/afbf9c1d004e404db8586b19e96d7923 [2023-04-01 12:04:18,342 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 12:04:18,343 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 12:04:18,344 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 12:04:18,344 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 12:04:18,349 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 12:04:18,349 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:04:18" (1/1) ... [2023-04-01 12:04:18,350 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c059bfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:04:18, skipping insertion in model container [2023-04-01 12:04:18,350 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:04:18" (1/1) ... [2023-04-01 12:04:18,356 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 12:04:18,392 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 12:04:18,635 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_product20.cil.c[14361,14374] [2023-04-01 12:04:18,664 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 12:04:18,677 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 12:04:18,741 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_product20.cil.c[14361,14374] [2023-04-01 12:04:18,746 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 12:04:18,772 INFO L208 MainTranslator]: Completed translation [2023-04-01 12:04:18,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:04:18 WrapperNode [2023-04-01 12:04:18,774 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 12:04:18,775 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 12:04:18,775 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 12:04:18,776 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 12:04:18,787 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:04:18" (1/1) ... [2023-04-01 12:04:18,787 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:04:18" (1/1) ... [2023-04-01 12:04:18,799 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:04:18" (1/1) ... [2023-04-01 12:04:18,800 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:04:18" (1/1) ... [2023-04-01 12:04:18,832 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:04:18" (1/1) ... [2023-04-01 12:04:18,849 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:04:18" (1/1) ... [2023-04-01 12:04:18,852 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:04:18" (1/1) ... [2023-04-01 12:04:18,858 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:04:18" (1/1) ... [2023-04-01 12:04:18,862 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 12:04:18,863 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 12:04:18,863 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 12:04:18,863 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 12:04:18,864 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:04:18" (1/1) ... [2023-04-01 12:04:18,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 12:04:18,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 12:04:18,889 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 12:04:18,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 12:04:18,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 12:04:18,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 12:04:18,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2023-04-01 12:04:18,929 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 12:04:18,933 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2023-04-01 12:04:18,933 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2023-04-01 12:04:18,933 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2023-04-01 12:04:18,933 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2023-04-01 12:04:18,933 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2023-04-01 12:04:18,934 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2023-04-01 12:04:18,934 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2023-04-01 12:04:18,934 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2023-04-01 12:04:18,934 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2023-04-01 12:04:18,934 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2023-04-01 12:04:18,934 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2023-04-01 12:04:18,934 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-04-01 12:04:18,934 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2023-04-01 12:04:18,935 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2023-04-01 12:04:18,935 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2023-04-01 12:04:18,935 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 12:04:18,935 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2023-04-01 12:04:18,935 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2023-04-01 12:04:18,935 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2023-04-01 12:04:18,935 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2023-04-01 12:04:18,935 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2023-04-01 12:04:18,935 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2023-04-01 12:04:18,936 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-04-01 12:04:18,936 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2023-04-01 12:04:18,936 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-04-01 12:04:18,936 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2023-04-01 12:04:18,936 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2023-04-01 12:04:18,936 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2023-04-01 12:04:18,936 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2023-04-01 12:04:18,936 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2023-04-01 12:04:18,936 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2023-04-01 12:04:18,937 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2023-04-01 12:04:18,937 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2023-04-01 12:04:18,937 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2023-04-01 12:04:18,937 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2023-04-01 12:04:18,937 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2023-04-01 12:04:18,937 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 12:04:18,937 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 12:04:18,937 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 12:04:18,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 12:04:18,938 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 12:04:18,938 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2023-04-01 12:04:18,938 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2023-04-01 12:04:18,938 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2023-04-01 12:04:18,938 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2023-04-01 12:04:18,938 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2023-04-01 12:04:18,938 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2023-04-01 12:04:18,938 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2023-04-01 12:04:18,939 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2023-04-01 12:04:18,939 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2023-04-01 12:04:18,939 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2023-04-01 12:04:18,939 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2023-04-01 12:04:18,939 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2023-04-01 12:04:18,939 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-04-01 12:04:18,939 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-04-01 12:04:18,939 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2023-04-01 12:04:18,940 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2023-04-01 12:04:18,940 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2023-04-01 12:04:18,940 INFO L130 BoogieDeclarations]: Found specification of procedure test [2023-04-01 12:04:18,940 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2023-04-01 12:04:18,940 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 12:04:18,940 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-01 12:04:18,940 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-01 12:04:18,940 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2023-04-01 12:04:18,940 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-01 12:04:18,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-01 12:04:18,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 12:04:18,941 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-01 12:04:18,941 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2023-04-01 12:04:18,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 12:04:18,941 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2023-04-01 12:04:18,941 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2023-04-01 12:04:18,941 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 12:04:18,941 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2023-04-01 12:04:18,942 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2023-04-01 12:04:18,942 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2023-04-01 12:04:18,942 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-04-01 12:04:18,942 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2023-04-01 12:04:18,942 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2023-04-01 12:04:18,942 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2023-04-01 12:04:18,942 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2023-04-01 12:04:18,942 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2023-04-01 12:04:18,942 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2023-04-01 12:04:18,943 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2023-04-01 12:04:18,943 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2023-04-01 12:04:18,943 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2023-04-01 12:04:18,943 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2023-04-01 12:04:18,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 12:04:18,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 12:04:18,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 12:04:19,085 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 12:04:19,087 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 12:04:19,544 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 12:04:19,641 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 12:04:19,641 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-04-01 12:04:19,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:04:19 BoogieIcfgContainer [2023-04-01 12:04:19,644 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 12:04:19,646 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 12:04:19,646 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 12:04:19,649 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 12:04:19,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 12:04:18" (1/3) ... [2023-04-01 12:04:19,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21ca82de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:04:19, skipping insertion in model container [2023-04-01 12:04:19,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:04:18" (2/3) ... [2023-04-01 12:04:19,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21ca82de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:04:19, skipping insertion in model container [2023-04-01 12:04:19,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:04:19" (3/3) ... [2023-04-01 12:04:19,652 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product20.cil.c [2023-04-01 12:04:19,667 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 12:04:19,667 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 12:04:19,721 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 12:04:19,727 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;@511418b8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 12:04:19,728 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 12:04:19,732 INFO L276 IsEmpty]: Start isEmpty. Operand has 131 states, 59 states have (on average 1.2881355932203389) internal successors, (76), 72 states have internal predecessors, (76), 43 states have call successors, (43), 26 states have call predecessors, (43), 26 states have return successors, (43), 40 states have call predecessors, (43), 43 states have call successors, (43) [2023-04-01 12:04:19,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-04-01 12:04:19,741 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:04:19,742 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:04:19,743 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:04:19,750 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:04:19,751 INFO L85 PathProgramCache]: Analyzing trace with hash 42020845, now seen corresponding path program 1 times [2023-04-01 12:04:19,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:04:19,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966779153] [2023-04-01 12:04:19,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:04:19,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:04:19,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:04:20,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:04:20,007 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:04:20,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966779153] [2023-04-01 12:04:20,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966779153] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:04:20,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:04:20,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-04-01 12:04:20,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534842583] [2023-04-01 12:04:20,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:04:20,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-04-01 12:04:20,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:04:20,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-04-01 12:04:20,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-01 12:04:20,058 INFO L87 Difference]: Start difference. First operand has 131 states, 59 states have (on average 1.2881355932203389) internal successors, (76), 72 states have internal predecessors, (76), 43 states have call successors, (43), 26 states have call predecessors, (43), 26 states have return successors, (43), 40 states have call predecessors, (43), 43 states have call successors, (43) Second operand has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-04-01 12:04:20,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:04:20,131 INFO L93 Difference]: Finished difference Result 195 states and 238 transitions. [2023-04-01 12:04:20,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-04-01 12:04:20,150 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 42 [2023-04-01 12:04:20,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:04:20,159 INFO L225 Difference]: With dead ends: 195 [2023-04-01 12:04:20,159 INFO L226 Difference]: Without dead ends: 98 [2023-04-01 12:04:20,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-01 12:04:20,174 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 12:04:20,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 109 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 12:04:20,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2023-04-01 12:04:20,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2023-04-01 12:04:20,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 50 states have (on average 1.24) internal successors, (62), 60 states have internal predecessors, (62), 28 states have call successors, (28), 24 states have call predecessors, (28), 19 states have return successors, (23), 20 states have call predecessors, (23), 23 states have call successors, (23) [2023-04-01 12:04:20,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 113 transitions. [2023-04-01 12:04:20,280 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 113 transitions. Word has length 42 [2023-04-01 12:04:20,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:04:20,281 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 113 transitions. [2023-04-01 12:04:20,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-04-01 12:04:20,282 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 113 transitions. [2023-04-01 12:04:20,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-04-01 12:04:20,287 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:04:20,287 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:04:20,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 12:04:20,288 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:04:20,293 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:04:20,294 INFO L85 PathProgramCache]: Analyzing trace with hash 552997127, now seen corresponding path program 1 times [2023-04-01 12:04:20,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:04:20,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726973982] [2023-04-01 12:04:20,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:04:20,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:04:20,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:04:20,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:04:20,526 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:04:20,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726973982] [2023-04-01 12:04:20,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726973982] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:04:20,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:04:20,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 12:04:20,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502828278] [2023-04-01 12:04:20,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:04:20,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 12:04:20,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:04:20,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 12:04:20,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 12:04:20,530 INFO L87 Difference]: Start difference. First operand 98 states and 113 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-04-01 12:04:20,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:04:20,594 INFO L93 Difference]: Finished difference Result 143 states and 163 transitions. [2023-04-01 12:04:20,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 12:04:20,595 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 43 [2023-04-01 12:04:20,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:04:20,603 INFO L225 Difference]: With dead ends: 143 [2023-04-01 12:04:20,603 INFO L226 Difference]: Without dead ends: 90 [2023-04-01 12:04:20,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 12:04:20,609 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 11 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 12:04:20,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 161 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 12:04:20,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2023-04-01 12:04:20,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2023-04-01 12:04:20,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 45 states have (on average 1.2444444444444445) internal successors, (56), 55 states have internal predecessors, (56), 25 states have call successors, (25), 23 states have call predecessors, (25), 19 states have return successors, (21), 18 states have call predecessors, (21), 21 states have call successors, (21) [2023-04-01 12:04:20,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 102 transitions. [2023-04-01 12:04:20,633 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 102 transitions. Word has length 43 [2023-04-01 12:04:20,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:04:20,633 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 102 transitions. [2023-04-01 12:04:20,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-04-01 12:04:20,634 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 102 transitions. [2023-04-01 12:04:20,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-04-01 12:04:20,635 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:04:20,635 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:04:20,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 12:04:20,636 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:04:20,636 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:04:20,636 INFO L85 PathProgramCache]: Analyzing trace with hash 2115496924, now seen corresponding path program 1 times [2023-04-01 12:04:20,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:04:20,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101842004] [2023-04-01 12:04:20,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:04:20,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:04:20,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:04:21,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:04:21,030 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:04:21,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101842004] [2023-04-01 12:04:21,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101842004] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:04:21,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:04:21,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 12:04:21,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356218990] [2023-04-01 12:04:21,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:04:21,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 12:04:21,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:04:21,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 12:04:21,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-04-01 12:04:21,037 INFO L87 Difference]: Start difference. First operand 90 states and 102 transitions. Second operand has 7 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 4 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-04-01 12:04:21,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:04:21,380 INFO L93 Difference]: Finished difference Result 271 states and 322 transitions. [2023-04-01 12:04:21,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 12:04:21,380 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 4 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 47 [2023-04-01 12:04:21,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:04:21,384 INFO L225 Difference]: With dead ends: 271 [2023-04-01 12:04:21,384 INFO L226 Difference]: Without dead ends: 203 [2023-04-01 12:04:21,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-04-01 12:04:21,393 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 154 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-01 12:04:21,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 450 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-01 12:04:21,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2023-04-01 12:04:21,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 191. [2023-04-01 12:04:21,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 102 states have (on average 1.2843137254901962) internal successors, (131), 121 states have internal predecessors, (131), 49 states have call successors, (49), 45 states have call predecessors, (49), 39 states have return successors, (46), 37 states have call predecessors, (46), 45 states have call successors, (46) [2023-04-01 12:04:21,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 226 transitions. [2023-04-01 12:04:21,430 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 226 transitions. Word has length 47 [2023-04-01 12:04:21,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:04:21,430 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 226 transitions. [2023-04-01 12:04:21,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 4 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-04-01 12:04:21,430 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 226 transitions. [2023-04-01 12:04:21,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-04-01 12:04:21,432 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:04:21,432 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:04:21,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 12:04:21,433 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:04:21,433 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:04:21,433 INFO L85 PathProgramCache]: Analyzing trace with hash -326635036, now seen corresponding path program 1 times [2023-04-01 12:04:21,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:04:21,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017464947] [2023-04-01 12:04:21,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:04:21,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:04:21,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:04:21,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:04:21,726 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:04:21,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017464947] [2023-04-01 12:04:21,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017464947] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:04:21,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:04:21,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-01 12:04:21,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988499737] [2023-04-01 12:04:21,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:04:21,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-01 12:04:21,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:04:21,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-01 12:04:21,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-04-01 12:04:21,729 INFO L87 Difference]: Start difference. First operand 191 states and 226 transitions. Second operand has 10 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 4 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-04-01 12:04:22,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:04:22,098 INFO L93 Difference]: Finished difference Result 659 states and 826 transitions. [2023-04-01 12:04:22,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 12:04:22,098 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 4 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 51 [2023-04-01 12:04:22,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:04:22,107 INFO L225 Difference]: With dead ends: 659 [2023-04-01 12:04:22,107 INFO L226 Difference]: Without dead ends: 490 [2023-04-01 12:04:22,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2023-04-01 12:04:22,114 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 135 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 12:04:22,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 581 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 12:04:22,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2023-04-01 12:04:22,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 466. [2023-04-01 12:04:22,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 259 states have (on average 1.2895752895752897) internal successors, (334), 305 states have internal predecessors, (334), 114 states have call successors, (114), 102 states have call predecessors, (114), 92 states have return successors, (121), 86 states have call predecessors, (121), 110 states have call successors, (121) [2023-04-01 12:04:22,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 569 transitions. [2023-04-01 12:04:22,182 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 569 transitions. Word has length 51 [2023-04-01 12:04:22,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:04:22,182 INFO L495 AbstractCegarLoop]: Abstraction has 466 states and 569 transitions. [2023-04-01 12:04:22,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 4 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-04-01 12:04:22,183 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 569 transitions. [2023-04-01 12:04:22,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-04-01 12:04:22,187 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:04:22,188 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:04:22,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 12:04:22,188 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:04:22,188 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:04:22,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1358441769, now seen corresponding path program 1 times [2023-04-01 12:04:22,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:04:22,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526141646] [2023-04-01 12:04:22,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:04:22,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:04:22,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:04:22,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:04:22,328 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:04:22,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526141646] [2023-04-01 12:04:22,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526141646] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:04:22,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:04:22,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 12:04:22,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165276591] [2023-04-01 12:04:22,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:04:22,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 12:04:22,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:04:22,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 12:04:22,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-01 12:04:22,330 INFO L87 Difference]: Start difference. First operand 466 states and 569 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 3 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2023-04-01 12:04:22,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:04:22,493 INFO L93 Difference]: Finished difference Result 808 states and 1021 transitions. [2023-04-01 12:04:22,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 12:04:22,493 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 3 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 54 [2023-04-01 12:04:22,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:04:22,509 INFO L225 Difference]: With dead ends: 808 [2023-04-01 12:04:22,509 INFO L226 Difference]: Without dead ends: 364 [2023-04-01 12:04:22,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-01 12:04:22,512 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 74 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 12:04:22,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 38 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 12:04:22,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2023-04-01 12:04:22,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 352. [2023-04-01 12:04:22,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 211 states have (on average 1.2132701421800949) internal successors, (256), 233 states have internal predecessors, (256), 72 states have call successors, (72), 72 states have call predecessors, (72), 68 states have return successors, (71), 68 states have call predecessors, (71), 68 states have call successors, (71) [2023-04-01 12:04:22,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 399 transitions. [2023-04-01 12:04:22,574 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 399 transitions. Word has length 54 [2023-04-01 12:04:22,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:04:22,575 INFO L495 AbstractCegarLoop]: Abstraction has 352 states and 399 transitions. [2023-04-01 12:04:22,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 3 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2023-04-01 12:04:22,575 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 399 transitions. [2023-04-01 12:04:22,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-04-01 12:04:22,578 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:04:22,578 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-01 12:04:22,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-01 12:04:22,578 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:04:22,579 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:04:22,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1730084322, now seen corresponding path program 1 times [2023-04-01 12:04:22,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:04:22,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005102643] [2023-04-01 12:04:22,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:04:22,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:04:22,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:04:22,880 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-04-01 12:04:22,881 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:04:22,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005102643] [2023-04-01 12:04:22,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005102643] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 12:04:22,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1458492562] [2023-04-01 12:04:22,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:04:22,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 12:04:22,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 12:04:22,884 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 12:04:22,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 12:04:23,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:04:23,093 INFO L262 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 51 conjunts are in the unsatisfiable core [2023-04-01 12:04:23,135 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 12:04:23,594 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-04-01 12:04:23,594 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 12:04:24,240 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 12:04:24,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1458492562] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 12:04:24,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1275380073] [2023-04-01 12:04:24,318 INFO L159 IcfgInterpreter]: Started Sifa with 59 locations of interest [2023-04-01 12:04:24,319 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 12:04:24,333 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 12:04:24,340 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 12:04:24,340 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 12:04:25,372 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 28 for LOIs [2023-04-01 12:04:25,496 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 127 for LOIs [2023-04-01 12:04:28,227 INFO L197 IcfgInterpreter]: Interpreting procedure runTest with input of size 127 for LOIs [2023-04-01 12:04:28,325 INFO L197 IcfgInterpreter]: Interpreting procedure setup with input of size 119 for LOIs [2023-04-01 12:04:28,356 INFO L197 IcfgInterpreter]: Interpreting procedure select_features with input of size 119 for LOIs [2023-04-01 12:04:28,375 INFO L197 IcfgInterpreter]: Interpreting procedure test with input of size 127 for LOIs [2023-04-01 12:04:37,820 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-04-01 12:04:38,213 INFO L197 IcfgInterpreter]: Interpreting procedure stopSystem with input of size 168 for LOIs [2023-04-01 12:04:38,346 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 154 for LOIs [2023-04-01 12:04:38,465 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 159 for LOIs [2023-04-01 12:04:38,820 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification4_spec__1 with input of size 117 for LOIs [2023-04-01 12:04:39,597 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 119 for LOIs [2023-04-01 12:04:39,656 INFO L197 IcfgInterpreter]: Interpreting procedure getWaterLevel with input of size 117 for LOIs [2023-04-01 12:04:39,682 INFO L197 IcfgInterpreter]: Interpreting procedure valid_product with input of size 119 for LOIs [2023-04-01 12:04:39,704 INFO L197 IcfgInterpreter]: Interpreting procedure select_helpers with input of size 119 for LOIs [2023-04-01 12:04:39,721 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-01 12:04:54,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1275380073] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:04:54,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-04-01 12:04:54,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [7, 14, 12] total 63 [2023-04-01 12:04:54,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345979665] [2023-04-01 12:04:54,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:04:54,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-04-01 12:04:54,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:04:54,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-04-01 12:04:54,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=414, Invalid=3492, Unknown=0, NotChecked=0, Total=3906 [2023-04-01 12:04:54,870 INFO L87 Difference]: Start difference. First operand 352 states and 399 transitions. Second operand has 37 states, 25 states have (on average 1.36) internal successors, (34), 29 states have internal predecessors, (34), 11 states have call successors, (15), 9 states have call predecessors, (15), 9 states have return successors, (11), 10 states have call predecessors, (11), 9 states have call successors, (11) [2023-04-01 12:05:21,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:05:21,215 INFO L93 Difference]: Finished difference Result 1151 states and 1401 transitions. [2023-04-01 12:05:21,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2023-04-01 12:05:21,216 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 25 states have (on average 1.36) internal successors, (34), 29 states have internal predecessors, (34), 11 states have call successors, (15), 9 states have call predecessors, (15), 9 states have return successors, (11), 10 states have call predecessors, (11), 9 states have call successors, (11) Word has length 79 [2023-04-01 12:05:21,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:05:21,223 INFO L225 Difference]: With dead ends: 1151 [2023-04-01 12:05:21,223 INFO L226 Difference]: Without dead ends: 821 [2023-04-01 12:05:21,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3731 ImplicationChecksByTransitivity, 35.4s TimeCoverageRelationStatistics Valid=1572, Invalid=11084, Unknown=0, NotChecked=0, Total=12656 [2023-04-01 12:05:21,241 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 578 mSDsluCounter, 829 mSDsCounter, 0 mSdLazyCounter, 4148 mSolverCounterSat, 472 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 585 SdHoareTripleChecker+Valid, 916 SdHoareTripleChecker+Invalid, 4620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 472 IncrementalHoareTripleChecker+Valid, 4148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-04-01 12:05:21,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [585 Valid, 916 Invalid, 4620 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [472 Valid, 4148 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2023-04-01 12:05:21,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 821 states. [2023-04-01 12:05:21,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 821 to 670. [2023-04-01 12:05:21,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 414 states have (on average 1.21256038647343) internal successors, (502), 451 states have internal predecessors, (502), 132 states have call successors, (132), 127 states have call predecessors, (132), 123 states have return successors, (133), 123 states have call predecessors, (133), 128 states have call successors, (133) [2023-04-01 12:05:21,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 767 transitions. [2023-04-01 12:05:21,527 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 767 transitions. Word has length 79 [2023-04-01 12:05:21,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:05:21,528 INFO L495 AbstractCegarLoop]: Abstraction has 670 states and 767 transitions. [2023-04-01 12:05:21,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 25 states have (on average 1.36) internal successors, (34), 29 states have internal predecessors, (34), 11 states have call successors, (15), 9 states have call predecessors, (15), 9 states have return successors, (11), 10 states have call predecessors, (11), 9 states have call successors, (11) [2023-04-01 12:05:21,528 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 767 transitions. [2023-04-01 12:05:21,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-04-01 12:05:21,531 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:05:21,532 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-01 12:05:21,541 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-01 12:05:21,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-04-01 12:05:21,739 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:05:21,739 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:05:21,739 INFO L85 PathProgramCache]: Analyzing trace with hash -157322432, now seen corresponding path program 1 times [2023-04-01 12:05:21,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:05:21,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838715883] [2023-04-01 12:05:21,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:05:21,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:05:21,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:05:22,132 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-04-01 12:05:22,132 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:05:22,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838715883] [2023-04-01 12:05:22,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838715883] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 12:05:22,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843979009] [2023-04-01 12:05:22,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:05:22,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 12:05:22,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 12:05:22,134 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 12:05:22,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-01 12:05:22,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:05:22,303 INFO L262 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 51 conjunts are in the unsatisfiable core [2023-04-01 12:05:22,308 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 12:05:23,039 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-04-01 12:05:23,039 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 12:05:23,504 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 12:05:23,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1843979009] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 12:05:23,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1328843094] [2023-04-01 12:05:23,507 INFO L159 IcfgInterpreter]: Started Sifa with 62 locations of interest [2023-04-01 12:05:23,507 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 12:05:23,507 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 12:05:23,507 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 12:05:23,507 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 12:05:23,820 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 28 for LOIs [2023-04-01 12:05:23,874 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 127 for LOIs [2023-04-01 12:05:25,397 INFO L197 IcfgInterpreter]: Interpreting procedure runTest with input of size 127 for LOIs [2023-04-01 12:05:25,473 INFO L197 IcfgInterpreter]: Interpreting procedure setup with input of size 119 for LOIs [2023-04-01 12:05:25,490 INFO L197 IcfgInterpreter]: Interpreting procedure select_features with input of size 119 for LOIs [2023-04-01 12:05:25,506 INFO L197 IcfgInterpreter]: Interpreting procedure test with input of size 127 for LOIs