/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_product09.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 12:04:01,124 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 12:04:01,125 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 12:04:01,158 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 12:04:01,158 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 12:04:01,160 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 12:04:01,163 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 12:04:01,164 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 12:04:01,167 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 12:04:01,172 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 12:04:01,174 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 12:04:01,175 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 12:04:01,175 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 12:04:01,177 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 12:04:01,178 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 12:04:01,179 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 12:04:01,180 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 12:04:01,180 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 12:04:01,182 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 12:04:01,186 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 12:04:01,187 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 12:04:01,188 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 12:04:01,189 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 12:04:01,189 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 12:04:01,195 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 12:04:01,195 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 12:04:01,195 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 12:04:01,195 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 12:04:01,196 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 12:04:01,196 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 12:04:01,196 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 12:04:01,197 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 12:04:01,197 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 12:04:01,198 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 12:04:01,198 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 12:04:01,198 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 12:04:01,199 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 12:04:01,199 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 12:04:01,199 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 12:04:01,199 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 12:04:01,200 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 12:04:01,203 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 12:04:01,225 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 12:04:01,225 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 12:04:01,226 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 12:04:01,226 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 12:04:01,226 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 12:04:01,226 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 12:04:01,226 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 12:04:01,227 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 12:04:01,227 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 12:04:01,227 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 12:04:01,227 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 12:04:01,227 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 12:04:01,227 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 12:04:01,228 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 12:04:01,228 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 12:04:01,228 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 12:04:01,228 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 12:04:01,228 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 12:04:01,228 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 12:04:01,228 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 12:04:01,228 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 12:04:01,229 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 12:04:01,229 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 12:04:01,229 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 12:04:01,229 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 12:04:01,229 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 12:04:01,229 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 12:04:01,229 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 12:04:01,229 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 12:04:01,230 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 12:04:01,230 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 12:04:01,230 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 12:04:01,230 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 12:04:01,230 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 12:04:01,230 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 12:04:01,230 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 12:04:01,230 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 12:04:01,230 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 12:04:01,231 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 12:04:01,231 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 12:04:01,231 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 12:04:01,231 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> EqDomain [2023-04-01 12:04:01,408 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 12:04:01,423 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 12:04:01,425 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 12:04:01,426 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 12:04:01,426 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 12:04:01,427 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec4_product09.cil.c [2023-04-01 12:04:02,438 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 12:04:02,614 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 12:04:02,614 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec4_product09.cil.c [2023-04-01 12:04:02,621 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ed460e8c/5c13892a229547b39b3638d1c218e461/FLAGc1c2d261b [2023-04-01 12:04:02,638 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ed460e8c/5c13892a229547b39b3638d1c218e461 [2023-04-01 12:04:02,641 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 12:04:02,642 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 12:04:02,643 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 12:04:02,643 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 12:04:02,645 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 12:04:02,646 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:04:02" (1/1) ... [2023-04-01 12:04:02,646 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@235ad974 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:04:02, skipping insertion in model container [2023-04-01 12:04:02,646 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:04:02" (1/1) ... [2023-04-01 12:04:02,651 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 12:04:02,691 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 12:04:02,826 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_product09.cil.c[11292,11305] [2023-04-01 12:04:02,844 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 12:04:02,869 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 12:04:02,912 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_product09.cil.c[11292,11305] [2023-04-01 12:04:02,920 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 12:04:02,932 INFO L208 MainTranslator]: Completed translation [2023-04-01 12:04:02,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:04:02 WrapperNode [2023-04-01 12:04:02,933 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 12:04:02,933 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 12:04:02,933 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 12:04:02,934 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 12:04:02,943 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:04:02" (1/1) ... [2023-04-01 12:04:02,943 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:04:02" (1/1) ... [2023-04-01 12:04:02,952 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:04:02" (1/1) ... [2023-04-01 12:04:02,952 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:04:02" (1/1) ... [2023-04-01 12:04:02,971 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:04:02" (1/1) ... [2023-04-01 12:04:02,976 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:04:02" (1/1) ... [2023-04-01 12:04:02,978 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:04:02" (1/1) ... [2023-04-01 12:04:02,980 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:04:02" (1/1) ... [2023-04-01 12:04:02,983 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 12:04:02,984 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 12:04:02,984 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 12:04:02,984 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 12:04:02,985 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:04:02" (1/1) ... [2023-04-01 12:04:02,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 12:04:02,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 12:04:03,006 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 12:04:03,011 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 12:04:03,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 12:04:03,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 12:04:03,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2023-04-01 12:04:03,033 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 12:04:03,033 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2023-04-01 12:04:03,033 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2023-04-01 12:04:03,033 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2023-04-01 12:04:03,033 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2023-04-01 12:04:03,033 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2023-04-01 12:04:03,034 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2023-04-01 12:04:03,034 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-04-01 12:04:03,034 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2023-04-01 12:04:03,034 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2023-04-01 12:04:03,034 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2023-04-01 12:04:03,034 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2023-04-01 12:04:03,034 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2023-04-01 12:04:03,034 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2023-04-01 12:04:03,034 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2023-04-01 12:04:03,034 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2023-04-01 12:04:03,034 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-04-01 12:04:03,034 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2023-04-01 12:04:03,035 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__base [2023-04-01 12:04:03,035 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2023-04-01 12:04:03,035 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2023-04-01 12:04:03,035 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2023-04-01 12:04:03,035 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2023-04-01 12:04:03,035 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2023-04-01 12:04:03,035 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2023-04-01 12:04:03,035 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2023-04-01 12:04:03,035 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2023-04-01 12:04:03,035 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2023-04-01 12:04:03,035 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-04-01 12:04:03,035 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2023-04-01 12:04:03,036 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2023-04-01 12:04:03,036 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2023-04-01 12:04:03,036 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 12:04:03,036 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 12:04:03,036 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 12:04:03,036 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 12:04:03,036 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 12:04:03,036 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 12:04:03,036 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2023-04-01 12:04:03,036 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-01 12:04:03,036 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-01 12:04:03,037 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2023-04-01 12:04:03,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-01 12:04:03,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-01 12:04:03,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 12:04:03,037 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-01 12:04:03,037 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2023-04-01 12:04:03,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 12:04:03,037 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2023-04-01 12:04:03,037 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2023-04-01 12:04:03,037 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 12:04:03,037 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2023-04-01 12:04:03,037 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2023-04-01 12:04:03,038 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2023-04-01 12:04:03,038 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-04-01 12:04:03,038 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2023-04-01 12:04:03,038 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2023-04-01 12:04:03,038 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2023-04-01 12:04:03,038 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2023-04-01 12:04:03,038 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2023-04-01 12:04:03,038 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2023-04-01 12:04:03,038 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2023-04-01 12:04:03,038 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2023-04-01 12:04:03,038 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-04-01 12:04:03,038 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-04-01 12:04:03,038 INFO L130 BoogieDeclarations]: Found specification of procedure test [2023-04-01 12:04:03,039 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2023-04-01 12:04:03,039 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2023-04-01 12:04:03,039 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2023-04-01 12:04:03,039 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2023-04-01 12:04:03,039 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__base [2023-04-01 12:04:03,039 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2023-04-01 12:04:03,039 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2023-04-01 12:04:03,039 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2023-04-01 12:04:03,039 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2023-04-01 12:04:03,039 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2023-04-01 12:04:03,039 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2023-04-01 12:04:03,039 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2023-04-01 12:04:03,039 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2023-04-01 12:04:03,039 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 12:04:03,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 12:04:03,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 12:04:03,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 12:04:03,150 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 12:04:03,152 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 12:04:03,651 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 12:04:03,758 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 12:04:03,758 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-04-01 12:04:03,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:04:03 BoogieIcfgContainer [2023-04-01 12:04:03,764 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 12:04:03,765 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 12:04:03,765 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 12:04:03,767 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 12:04:03,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 12:04:02" (1/3) ... [2023-04-01 12:04:03,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@477e9b1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:04:03, skipping insertion in model container [2023-04-01 12:04:03,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:04:02" (2/3) ... [2023-04-01 12:04:03,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@477e9b1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:04:03, skipping insertion in model container [2023-04-01 12:04:03,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:04:03" (3/3) ... [2023-04-01 12:04:03,769 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product09.cil.c [2023-04-01 12:04:03,783 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 12:04:03,783 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 12:04:03,842 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 12:04:03,847 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;@d56c007, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 12:04:03,847 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 12:04:03,851 INFO L276 IsEmpty]: Start isEmpty. Operand has 103 states, 45 states have (on average 1.2666666666666666) internal successors, (57), 53 states have internal predecessors, (57), 35 states have call successors, (35), 20 states have call predecessors, (35), 20 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2023-04-01 12:04:03,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-04-01 12:04:03,858 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:04:03,859 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 12:04:03,859 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:04:03,864 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:04:03,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1525280602, now seen corresponding path program 1 times [2023-04-01 12:04:03,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:04:03,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950781888] [2023-04-01 12:04:03,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:04:03,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:04:03,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:04:04,023 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 12:04:04,023 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:04:04,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950781888] [2023-04-01 12:04:04,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950781888] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:04:04,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:04:04,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-04-01 12:04:04,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980592067] [2023-04-01 12:04:04,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:04:04,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-04-01 12:04:04,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:04:04,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-04-01 12:04:04,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-01 12:04:04,065 INFO L87 Difference]: Start difference. First operand has 103 states, 45 states have (on average 1.2666666666666666) internal successors, (57), 53 states have internal predecessors, (57), 35 states have call successors, (35), 20 states have call predecessors, (35), 20 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) 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 12:04:04,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:04:04,114 INFO L93 Difference]: Finished difference Result 139 states and 168 transitions. [2023-04-01 12:04:04,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-04-01 12:04:04,120 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 12:04:04,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:04:04,125 INFO L225 Difference]: With dead ends: 139 [2023-04-01 12:04:04,125 INFO L226 Difference]: Without dead ends: 70 [2023-04-01 12:04:04,128 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 12:04:04,130 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 12:04:04,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 78 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 12:04:04,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2023-04-01 12:04:04,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2023-04-01 12:04:04,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 36 states have (on average 1.1944444444444444) internal successors, (43), 41 states have internal predecessors, (43), 20 states have call successors, (20), 18 states have call predecessors, (20), 13 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-04-01 12:04:04,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 78 transitions. [2023-04-01 12:04:04,180 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 78 transitions. Word has length 42 [2023-04-01 12:04:04,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:04:04,180 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 78 transitions. [2023-04-01 12:04:04,181 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 12:04:04,181 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 78 transitions. [2023-04-01 12:04:04,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-04-01 12:04:04,183 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:04:04,183 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 12:04:04,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 12:04:04,183 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:04:04,183 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:04:04,184 INFO L85 PathProgramCache]: Analyzing trace with hash -768605291, now seen corresponding path program 1 times [2023-04-01 12:04:04,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:04:04,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908586730] [2023-04-01 12:04:04,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:04:04,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:04:04,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:04:04,295 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 12:04:04,295 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:04:04,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908586730] [2023-04-01 12:04:04,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908586730] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:04:04,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:04:04,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 12:04:04,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050969679] [2023-04-01 12:04:04,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:04:04,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 12:04:04,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:04:04,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 12:04:04,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 12:04:04,298 INFO L87 Difference]: Start difference. First operand 70 states and 78 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 12:04:04,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:04:04,324 INFO L93 Difference]: Finished difference Result 97 states and 107 transitions. [2023-04-01 12:04:04,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 12:04:04,325 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 12:04:04,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:04:04,326 INFO L225 Difference]: With dead ends: 97 [2023-04-01 12:04:04,326 INFO L226 Difference]: Without dead ends: 62 [2023-04-01 12:04:04,327 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 12:04:04,328 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 7 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 12:04:04,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 106 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 12:04:04,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2023-04-01 12:04:04,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2023-04-01 12:04:04,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 36 states have internal predecessors, (37), 17 states have call successors, (17), 17 states have call predecessors, (17), 13 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-04-01 12:04:04,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 67 transitions. [2023-04-01 12:04:04,334 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 67 transitions. Word has length 43 [2023-04-01 12:04:04,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:04:04,334 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 67 transitions. [2023-04-01 12:04:04,334 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 12:04:04,334 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 67 transitions. [2023-04-01 12:04:04,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-04-01 12:04:04,335 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:04:04,335 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] [2023-04-01 12:04:04,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 12:04:04,336 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:04:04,336 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:04:04,336 INFO L85 PathProgramCache]: Analyzing trace with hash 610634865, now seen corresponding path program 1 times [2023-04-01 12:04:04,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:04:04,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456049034] [2023-04-01 12:04:04,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:04:04,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:04:04,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:04:04,516 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 12:04:04,516 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:04:04,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456049034] [2023-04-01 12:04:04,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456049034] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:04:04,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:04:04,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 12:04:04,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726436809] [2023-04-01 12:04:04,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:04:04,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 12:04:04,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:04:04,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 12:04:04,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-04-01 12:04:04,518 INFO L87 Difference]: Start difference. First operand 62 states and 67 transitions. Second operand has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 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 12:04:04,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:04:04,660 INFO L93 Difference]: Finished difference Result 102 states and 113 transitions. [2023-04-01 12:04:04,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-01 12:04:04,661 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 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 45 [2023-04-01 12:04:04,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:04:04,664 INFO L225 Difference]: With dead ends: 102 [2023-04-01 12:04:04,664 INFO L226 Difference]: Without dead ends: 62 [2023-04-01 12:04:04,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-04-01 12:04:04,670 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 57 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 12:04:04,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 156 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 12:04:04,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2023-04-01 12:04:04,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2023-04-01 12:04:04,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 35 states have internal predecessors, (36), 17 states have call successors, (17), 17 states have call predecessors, (17), 13 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-04-01 12:04:04,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2023-04-01 12:04:04,684 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 45 [2023-04-01 12:04:04,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:04:04,685 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2023-04-01 12:04:04,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 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 12:04:04,686 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2023-04-01 12:04:04,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-04-01 12:04:04,691 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:04:04,692 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] [2023-04-01 12:04:04,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 12:04:04,692 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:04:04,693 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:04:04,693 INFO L85 PathProgramCache]: Analyzing trace with hash -603259501, now seen corresponding path program 1 times [2023-04-01 12:04:04,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:04:04,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376793962] [2023-04-01 12:04:04,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:04:04,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:04:04,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:04:04,852 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 12:04:04,852 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:04:04,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376793962] [2023-04-01 12:04:04,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376793962] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:04:04,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:04:04,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-01 12:04:04,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661178419] [2023-04-01 12:04:04,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:04:04,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-01 12:04:04,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:04:04,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-01 12:04:04,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-04-01 12:04:04,854 INFO L87 Difference]: Start difference. First operand 62 states and 66 transitions. Second operand has 10 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 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 12:04:05,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:04:05,055 INFO L93 Difference]: Finished difference Result 165 states and 190 transitions. [2023-04-01 12:04:05,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 12:04:05,056 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 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 48 [2023-04-01 12:04:05,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:04:05,058 INFO L225 Difference]: With dead ends: 165 [2023-04-01 12:04:05,058 INFO L226 Difference]: Without dead ends: 125 [2023-04-01 12:04:05,058 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 12:04:05,059 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 78 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 12:04:05,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 338 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 12:04:05,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2023-04-01 12:04:05,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 117. [2023-04-01 12:04:05,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 64 states have (on average 1.171875) internal successors, (75), 71 states have internal predecessors, (75), 28 states have call successors, (28), 28 states have call predecessors, (28), 24 states have return successors, (26), 24 states have call predecessors, (26), 24 states have call successors, (26) [2023-04-01 12:04:05,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 129 transitions. [2023-04-01 12:04:05,077 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 129 transitions. Word has length 48 [2023-04-01 12:04:05,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:04:05,077 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 129 transitions. [2023-04-01 12:04:05,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 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 12:04:05,077 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 129 transitions. [2023-04-01 12:04:05,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-04-01 12:04:05,078 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:04:05,078 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 12:04:05,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 12:04:05,078 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:04:05,078 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:04:05,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1422442196, now seen corresponding path program 1 times [2023-04-01 12:04:05,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:04:05,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595057535] [2023-04-01 12:04:05,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:04:05,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:04:05,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:04:05,107 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 12:04:05,107 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:04:05,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595057535] [2023-04-01 12:04:05,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595057535] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:04:05,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:04:05,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 12:04:05,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398500432] [2023-04-01 12:04:05,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:04:05,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 12:04:05,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:04:05,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 12:04:05,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 12:04:05,109 INFO L87 Difference]: Start difference. First operand 117 states and 129 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2023-04-01 12:04:05,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:04:05,124 INFO L93 Difference]: Finished difference Result 154 states and 171 transitions. [2023-04-01 12:04:05,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 12:04:05,124 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 51 [2023-04-01 12:04:05,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:04:05,125 INFO L225 Difference]: With dead ends: 154 [2023-04-01 12:04:05,125 INFO L226 Difference]: Without dead ends: 114 [2023-04-01 12:04:05,125 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 12:04:05,126 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 41 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 12:04:05,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 54 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 12:04:05,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2023-04-01 12:04:05,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2023-04-01 12:04:05,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 63 states have (on average 1.126984126984127) internal successors, (71), 69 states have internal predecessors, (71), 27 states have call successors, (27), 27 states have call predecessors, (27), 23 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-04-01 12:04:05,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 121 transitions. [2023-04-01 12:04:05,137 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 121 transitions. Word has length 51 [2023-04-01 12:04:05,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:04:05,137 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 121 transitions. [2023-04-01 12:04:05,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2023-04-01 12:04:05,137 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 121 transitions. [2023-04-01 12:04:05,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-04-01 12:04:05,138 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:04:05,138 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:04:05,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-01 12:04:05,139 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:04:05,139 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:04:05,139 INFO L85 PathProgramCache]: Analyzing trace with hash 2197527, now seen corresponding path program 1 times [2023-04-01 12:04:05,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:04:05,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218766827] [2023-04-01 12:04:05,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:04:05,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:04:05,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:04:05,500 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-04-01 12:04:05,500 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:04:05,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218766827] [2023-04-01 12:04:05,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218766827] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 12:04:05,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1028833553] [2023-04-01 12:04:05,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:04:05,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 12:04:05,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 12:04:05,504 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 12:04:05,520 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 12:04:05,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:04:05,641 INFO L262 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 51 conjunts are in the unsatisfiable core [2023-04-01 12:04:05,646 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 12:04:05,905 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-04-01 12:04:05,905 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 12:04:06,335 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-04-01 12:04:06,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1028833553] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 12:04:06,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1929509059] [2023-04-01 12:04:06,371 INFO L159 IcfgInterpreter]: Started Sifa with 56 locations of interest [2023-04-01 12:04:06,371 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 12:04:06,374 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 12:04:06,377 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 12:04:06,377 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 12:04:06,783 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 28 for LOIs [2023-04-01 12:04:06,819 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 123 for LOIs [2023-04-01 12:04:08,195 INFO L197 IcfgInterpreter]: Interpreting procedure runTest with input of size 123 for LOIs [2023-04-01 12:04:08,224 INFO L197 IcfgInterpreter]: Interpreting procedure setup with input of size 119 for LOIs [2023-04-01 12:04:08,238 INFO L197 IcfgInterpreter]: Interpreting procedure select_features with input of size 119 for LOIs [2023-04-01 12:04:08,252 INFO L197 IcfgInterpreter]: Interpreting procedure test with input of size 123 for LOIs [2023-04-01 12:04:10,188 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 122 for LOIs [2023-04-01 12:04:10,206 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 136 for LOIs [2023-04-01 12:04:10,587 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification4_spec__1 with input of size 117 for LOIs [2023-04-01 12:04:10,963 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 119 for LOIs [2023-04-01 12:04:10,981 INFO L197 IcfgInterpreter]: Interpreting procedure getWaterLevel with input of size 117 for LOIs [2023-04-01 12:04:10,994 INFO L197 IcfgInterpreter]: Interpreting procedure valid_product with input of size 119 for LOIs [2023-04-01 12:04:11,012 INFO L197 IcfgInterpreter]: Interpreting procedure select_helpers with input of size 119 for LOIs [2023-04-01 12:04:11,025 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment with input of size 133 for LOIs [2023-04-01 12:04:11,045 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-01 12:04:18,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1929509059] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:04:18,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-04-01 12:04:18,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [15, 14, 12] total 55 [2023-04-01 12:04:18,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456761726] [2023-04-01 12:04:18,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:04:18,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-04-01 12:04:18,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:04:18,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-04-01 12:04:18,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=371, Invalid=2599, Unknown=0, NotChecked=0, Total=2970 [2023-04-01 12:04:18,615 INFO L87 Difference]: Start difference. First operand 114 states and 121 transitions. Second operand has 30 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 23 states have internal predecessors, (30), 10 states have call successors, (15), 8 states have call predecessors, (15), 9 states have return successors, (11), 10 states have call predecessors, (11), 8 states have call successors, (11) [2023-04-01 12:04:26,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:04:26,525 INFO L93 Difference]: Finished difference Result 248 states and 277 transitions. [2023-04-01 12:04:26,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-04-01 12:04:26,525 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 23 states have internal predecessors, (30), 10 states have call successors, (15), 8 states have call predecessors, (15), 9 states have return successors, (11), 10 states have call predecessors, (11), 8 states have call successors, (11) Word has length 77 [2023-04-01 12:04:26,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:04:26,527 INFO L225 Difference]: With dead ends: 248 [2023-04-01 12:04:26,527 INFO L226 Difference]: Without dead ends: 211 [2023-04-01 12:04:26,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 192 SyntacticMatches, 9 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2282 ImplicationChecksByTransitivity, 14.5s TimeCoverageRelationStatistics Valid=871, Invalid=4829, Unknown=0, NotChecked=0, Total=5700 [2023-04-01 12:04:26,529 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 219 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 1070 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 1221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 1070 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-01 12:04:26,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 67 Invalid, 1221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 1070 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-01 12:04:26,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2023-04-01 12:04:26,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 189. [2023-04-01 12:04:26,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 110 states have (on average 1.1272727272727272) internal successors, (124), 118 states have internal predecessors, (124), 41 states have call successors, (41), 41 states have call predecessors, (41), 37 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-04-01 12:04:26,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 202 transitions. [2023-04-01 12:04:26,578 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 202 transitions. Word has length 77 [2023-04-01 12:04:26,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:04:26,578 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 202 transitions. [2023-04-01 12:04:26,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 23 states have internal predecessors, (30), 10 states have call successors, (15), 8 states have call predecessors, (15), 9 states have return successors, (11), 10 states have call predecessors, (11), 8 states have call successors, (11) [2023-04-01 12:04:26,579 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 202 transitions. [2023-04-01 12:04:26,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-04-01 12:04:26,580 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:04:26,580 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:04:26,590 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 12:04:26,787 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 12:04:26,787 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:04:26,788 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:04:26,788 INFO L85 PathProgramCache]: Analyzing trace with hash -214971292, now seen corresponding path program 1 times [2023-04-01 12:04:26,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:04:26,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457105358] [2023-04-01 12:04:26,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:04:26,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:04:26,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:04:27,187 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-04-01 12:04:27,188 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:04:27,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457105358] [2023-04-01 12:04:27,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457105358] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 12:04:27,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [273961944] [2023-04-01 12:04:27,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:04:27,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 12:04:27,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 12:04:27,207 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 12:04:27,208 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 12:04:27,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:04:27,294 INFO L262 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 51 conjunts are in the unsatisfiable core [2023-04-01 12:04:27,299 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 12:04:27,418 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-04-01 12:04:27,418 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 12:04:27,732 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-04-01 12:04:27,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [273961944] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 12:04:27,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [843188053] [2023-04-01 12:04:27,735 INFO L159 IcfgInterpreter]: Started Sifa with 59 locations of interest [2023-04-01 12:04:27,735 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 12:04:27,736 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 12:04:27,736 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 12:04:27,736 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 12:04:27,893 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 28 for LOIs [2023-04-01 12:04:27,910 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 123 for LOIs [2023-04-01 12:04:28,644 INFO L197 IcfgInterpreter]: Interpreting procedure runTest with input of size 123 for LOIs [2023-04-01 12:04:28,671 INFO L197 IcfgInterpreter]: Interpreting procedure setup with input of size 119 for LOIs [2023-04-01 12:04:28,684 INFO L197 IcfgInterpreter]: Interpreting procedure select_features with input of size 119 for LOIs [2023-04-01 12:04:28,697 INFO L197 IcfgInterpreter]: Interpreting procedure test with input of size 123 for LOIs [2023-04-01 12:04:32,329 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 163 for LOIs [2023-04-01 12:04:32,396 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 173 for LOIs [2023-04-01 12:04:32,905 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification4_spec__1 with input of size 154 for LOIs [2023-04-01 12:04:33,481 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 156 for LOIs [2023-04-01 12:04:33,507 INFO L197 IcfgInterpreter]: Interpreting procedure getWaterLevel with input of size 154 for LOIs [2023-04-01 12:04:33,527 INFO L197 IcfgInterpreter]: Interpreting procedure changeMethaneLevel with input of size 166 for LOIs [2023-04-01 12:04:33,555 INFO L197 IcfgInterpreter]: Interpreting procedure valid_product with input of size 119 for LOIs [2023-04-01 12:04:33,572 INFO L197 IcfgInterpreter]: Interpreting procedure select_helpers with input of size 119 for LOIs [2023-04-01 12:04:33,584 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment with input of size 170 for LOIs [2023-04-01 12:04:33,611 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-01 12:04:44,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [843188053] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:04:44,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-04-01 12:04:44,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [15, 14, 12] total 57 [2023-04-01 12:04:44,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618331058] [2023-04-01 12:04:44,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:04:44,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-04-01 12:04:44,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:04:44,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-04-01 12:04:44,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=379, Invalid=2813, Unknown=0, NotChecked=0, Total=3192 [2023-04-01 12:04:44,942 INFO L87 Difference]: Start difference. First operand 189 states and 202 transitions. Second operand has 32 states, 21 states have (on average 1.5238095238095237) internal successors, (32), 25 states have internal predecessors, (32), 11 states have call successors, (16), 9 states have call predecessors, (16), 10 states have return successors, (12), 10 states have call predecessors, (12), 9 states have call successors, (12)