/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain EqDomain -i ../sv-benchmarks/c/product-lines/minepump_spec5_product36.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 12:08:50,483 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 12:08:50,484 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 12:08:50,507 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 12:08:50,507 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 12:08:50,509 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 12:08:50,512 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 12:08:50,514 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 12:08:50,515 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 12:08:50,519 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 12:08:50,520 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 12:08:50,521 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 12:08:50,521 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 12:08:50,525 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 12:08:50,526 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 12:08:50,527 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 12:08:50,528 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 12:08:50,528 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 12:08:50,530 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 12:08:50,533 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 12:08:50,534 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 12:08:50,535 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 12:08:50,536 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 12:08:50,537 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 12:08:50,543 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 12:08:50,543 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 12:08:50,543 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 12:08:50,545 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 12:08:50,545 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 12:08:50,545 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 12:08:50,546 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 12:08:50,546 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 12:08:50,547 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 12:08:50,548 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 12:08:50,548 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 12:08:50,549 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 12:08:50,549 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 12:08:50,549 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 12:08:50,550 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 12:08:50,550 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 12:08:50,551 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 12:08:50,552 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 12:08:50,578 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 12:08:50,579 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 12:08:50,579 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 12:08:50,579 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 12:08:50,580 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 12:08:50,580 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 12:08:50,580 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 12:08:50,580 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 12:08:50,580 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 12:08:50,580 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 12:08:50,581 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 12:08:50,581 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 12:08:50,581 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 12:08:50,581 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 12:08:50,581 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 12:08:50,581 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 12:08:50,581 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 12:08:50,581 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 12:08:50,582 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 12:08:50,582 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 12:08:50,582 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 12:08:50,582 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 12:08:50,582 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 12:08:50,582 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 12:08:50,582 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 12:08:50,582 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 12:08:50,583 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 12:08:50,583 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 12:08:50,583 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 12:08:50,583 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 12:08:50,583 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 12:08:50,583 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 12:08:50,583 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 12:08:50,583 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 12:08:50,584 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 12:08:50,584 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 12:08:50,584 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 12:08:50,584 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 12:08:50,584 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 12:08:50,584 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 12:08:50,584 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 12:08:50,584 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> EqDomain [2023-04-01 12:08:50,746 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 12:08:50,766 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 12:08:50,767 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 12:08:50,768 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 12:08:50,769 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 12:08:50,770 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec5_product36.cil.c [2023-04-01 12:08:51,833 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 12:08:52,025 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 12:08:52,026 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec5_product36.cil.c [2023-04-01 12:08:52,044 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47b585073/1595095df38a4eada99a708108fd9e36/FLAG00df4133c [2023-04-01 12:08:52,057 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47b585073/1595095df38a4eada99a708108fd9e36 [2023-04-01 12:08:52,059 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 12:08:52,060 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 12:08:52,065 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 12:08:52,066 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 12:08:52,068 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 12:08:52,069 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:08:52" (1/1) ... [2023-04-01 12:08:52,069 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d987d84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:08:52, skipping insertion in model container [2023-04-01 12:08:52,069 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:08:52" (1/1) ... [2023-04-01 12:08:52,075 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 12:08:52,115 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 12:08:52,263 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec5_product36.cil.c[2141,2154] [2023-04-01 12:08:52,397 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 12:08:52,411 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 12:08:52,433 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec5_product36.cil.c[2141,2154] [2023-04-01 12:08:52,472 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 12:08:52,491 INFO L208 MainTranslator]: Completed translation [2023-04-01 12:08:52,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:08:52 WrapperNode [2023-04-01 12:08:52,492 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 12:08:52,493 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 12:08:52,493 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 12:08:52,493 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 12:08:52,501 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:08:52" (1/1) ... [2023-04-01 12:08:52,502 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:08:52" (1/1) ... [2023-04-01 12:08:52,525 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:08:52" (1/1) ... [2023-04-01 12:08:52,526 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:08:52" (1/1) ... [2023-04-01 12:08:52,539 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:08:52" (1/1) ... [2023-04-01 12:08:52,543 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:08:52" (1/1) ... [2023-04-01 12:08:52,545 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:08:52" (1/1) ... [2023-04-01 12:08:52,547 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:08:52" (1/1) ... [2023-04-01 12:08:52,550 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 12:08:52,551 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 12:08:52,551 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 12:08:52,551 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 12:08:52,552 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:08:52" (1/1) ... [2023-04-01 12:08:52,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 12:08:52,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 12:08:52,582 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 12:08:52,591 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 12:08:52,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 12:08:52,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 12:08:52,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2023-04-01 12:08:52,614 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 12:08:52,618 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2023-04-01 12:08:52,618 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2023-04-01 12:08:52,618 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2023-04-01 12:08:52,619 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2023-04-01 12:08:52,619 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-04-01 12:08:52,619 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-04-01 12:08:52,619 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2023-04-01 12:08:52,619 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2023-04-01 12:08:52,619 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2023-04-01 12:08:52,619 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2023-04-01 12:08:52,619 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2023-04-01 12:08:52,619 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2023-04-01 12:08:52,619 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2023-04-01 12:08:52,620 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2023-04-01 12:08:52,620 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2023-04-01 12:08:52,620 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2023-04-01 12:08:52,620 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2023-04-01 12:08:52,620 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2023-04-01 12:08:52,620 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2023-04-01 12:08:52,620 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2023-04-01 12:08:52,620 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2023-04-01 12:08:52,620 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2023-04-01 12:08:52,621 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2023-04-01 12:08:52,621 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-04-01 12:08:52,621 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2023-04-01 12:08:52,621 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2023-04-01 12:08:52,621 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2023-04-01 12:08:52,621 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 12:08:52,621 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2023-04-01 12:08:52,621 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2023-04-01 12:08:52,621 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2023-04-01 12:08:52,621 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2023-04-01 12:08:52,621 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2023-04-01 12:08:52,621 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2023-04-01 12:08:52,622 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2023-04-01 12:08:52,622 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2023-04-01 12:08:52,622 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2023-04-01 12:08:52,622 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2023-04-01 12:08:52,622 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 12:08:52,623 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 12:08:52,623 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 12:08:52,623 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 12:08:52,623 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 12:08:52,624 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2023-04-01 12:08:52,624 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2023-04-01 12:08:52,624 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2023-04-01 12:08:52,624 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2023-04-01 12:08:52,624 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2023-04-01 12:08:52,624 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-04-01 12:08:52,624 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2023-04-01 12:08:52,625 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2023-04-01 12:08:52,625 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2023-04-01 12:08:52,625 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2023-04-01 12:08:52,625 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-04-01 12:08:52,626 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2023-04-01 12:08:52,626 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2023-04-01 12:08:52,626 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2023-04-01 12:08:52,627 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2023-04-01 12:08:52,627 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2023-04-01 12:08:52,627 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2023-04-01 12:08:52,627 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2023-04-01 12:08:52,627 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2023-04-01 12:08:52,627 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2023-04-01 12:08:52,627 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2023-04-01 12:08:52,627 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2023-04-01 12:08:52,627 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2023-04-01 12:08:52,627 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-01 12:08:52,627 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-01 12:08:52,627 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2023-04-01 12:08:52,628 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-01 12:08:52,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-01 12:08:52,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 12:08:52,628 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-01 12:08:52,628 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2023-04-01 12:08:52,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 12:08:52,628 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2023-04-01 12:08:52,628 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2023-04-01 12:08:52,628 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 12:08:52,628 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2023-04-01 12:08:52,629 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2023-04-01 12:08:52,629 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2023-04-01 12:08:52,630 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2023-04-01 12:08:52,630 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2023-04-01 12:08:52,630 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-04-01 12:08:52,630 INFO L130 BoogieDeclarations]: Found specification of procedure test [2023-04-01 12:08:52,631 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2023-04-01 12:08:52,631 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2023-04-01 12:08:52,631 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2023-04-01 12:08:52,631 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2023-04-01 12:08:52,631 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 12:08:52,631 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2023-04-01 12:08:52,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 12:08:52,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 12:08:52,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 12:08:52,796 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 12:08:52,798 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 12:08:53,212 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 12:08:53,341 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 12:08:53,342 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-04-01 12:08:53,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:08:53 BoogieIcfgContainer [2023-04-01 12:08:53,346 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 12:08:53,348 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 12:08:53,348 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 12:08:53,351 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 12:08:53,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 12:08:52" (1/3) ... [2023-04-01 12:08:53,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@647d41e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:08:53, skipping insertion in model container [2023-04-01 12:08:53,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:08:52" (2/3) ... [2023-04-01 12:08:53,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@647d41e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:08:53, skipping insertion in model container [2023-04-01 12:08:53,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:08:53" (3/3) ... [2023-04-01 12:08:53,353 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product36.cil.c [2023-04-01 12:08:53,366 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 12:08:53,366 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 12:08:53,408 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 12:08:53,414 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;@1e7cda42, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 12:08:53,415 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 12:08:53,419 INFO L276 IsEmpty]: Start isEmpty. Operand has 141 states, 63 states have (on average 1.2857142857142858) internal successors, (81), 76 states have internal predecessors, (81), 46 states have call successors, (46), 29 states have call predecessors, (46), 29 states have return successors, (46), 43 states have call predecessors, (46), 46 states have call successors, (46) [2023-04-01 12:08:53,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-04-01 12:08:53,427 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:08:53,428 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:08:53,460 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:08:53,465 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:08:53,465 INFO L85 PathProgramCache]: Analyzing trace with hash 433326769, now seen corresponding path program 1 times [2023-04-01 12:08:53,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:08:53,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314042045] [2023-04-01 12:08:53,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:08:53,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:08:53,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:08:53,691 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-01 12:08:53,691 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:08:53,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314042045] [2023-04-01 12:08:53,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314042045] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:08:53,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:08:53,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-04-01 12:08:53,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592186463] [2023-04-01 12:08:53,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:08:53,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-04-01 12:08:53,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:08:53,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-04-01 12:08:53,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-01 12:08:53,730 INFO L87 Difference]: Start difference. First operand has 141 states, 63 states have (on average 1.2857142857142858) internal successors, (81), 76 states have internal predecessors, (81), 46 states have call successors, (46), 29 states have call predecessors, (46), 29 states have return successors, (46), 43 states have call predecessors, (46), 46 states have call successors, (46) Second operand has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-04-01 12:08:53,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:08:53,806 INFO L93 Difference]: Finished difference Result 212 states and 257 transitions. [2023-04-01 12:08:53,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-04-01 12:08:53,808 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 52 [2023-04-01 12:08:53,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:08:53,816 INFO L225 Difference]: With dead ends: 212 [2023-04-01 12:08:53,817 INFO L226 Difference]: Without dead ends: 108 [2023-04-01 12:08:53,821 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 12:08:53,823 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 12:08:53,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 117 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 12:08:53,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2023-04-01 12:08:53,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2023-04-01 12:08:53,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 54 states have (on average 1.2407407407407407) internal successors, (67), 64 states have internal predecessors, (67), 31 states have call successors, (31), 27 states have call predecessors, (31), 22 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2023-04-01 12:08:53,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 124 transitions. [2023-04-01 12:08:53,949 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 124 transitions. Word has length 52 [2023-04-01 12:08:53,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:08:53,950 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 124 transitions. [2023-04-01 12:08:53,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-04-01 12:08:53,952 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 124 transitions. [2023-04-01 12:08:53,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-04-01 12:08:53,955 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:08:53,955 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:08:53,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 12:08:53,956 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:08:53,956 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:08:53,957 INFO L85 PathProgramCache]: Analyzing trace with hash 2000923346, now seen corresponding path program 1 times [2023-04-01 12:08:53,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:08:53,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360759747] [2023-04-01 12:08:53,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:08:53,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:08:53,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:08:54,084 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-01 12:08:54,085 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:08:54,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360759747] [2023-04-01 12:08:54,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360759747] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:08:54,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:08:54,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 12:08:54,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654861690] [2023-04-01 12:08:54,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:08:54,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 12:08:54,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:08:54,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 12:08:54,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 12:08:54,089 INFO L87 Difference]: Start difference. First operand 108 states and 124 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-04-01 12:08:54,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:08:54,151 INFO L93 Difference]: Finished difference Result 158 states and 181 transitions. [2023-04-01 12:08:54,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 12:08:54,152 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 53 [2023-04-01 12:08:54,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:08:54,153 INFO L225 Difference]: With dead ends: 158 [2023-04-01 12:08:54,153 INFO L226 Difference]: Without dead ends: 100 [2023-04-01 12:08:54,156 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 12:08:54,157 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 11 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 12:08:54,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 177 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 12:08:54,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2023-04-01 12:08:54,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2023-04-01 12:08:54,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 49 states have (on average 1.2448979591836735) internal successors, (61), 59 states have internal predecessors, (61), 28 states have call successors, (28), 26 states have call predecessors, (28), 22 states have return successors, (24), 21 states have call predecessors, (24), 24 states have call successors, (24) [2023-04-01 12:08:54,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 113 transitions. [2023-04-01 12:08:54,164 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 113 transitions. Word has length 53 [2023-04-01 12:08:54,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:08:54,167 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 113 transitions. [2023-04-01 12:08:54,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-04-01 12:08:54,167 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 113 transitions. [2023-04-01 12:08:54,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-04-01 12:08:54,168 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:08:54,168 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:08:54,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 12:08:54,169 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:08:54,169 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:08:54,169 INFO L85 PathProgramCache]: Analyzing trace with hash -16316347, now seen corresponding path program 1 times [2023-04-01 12:08:54,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:08:54,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679863586] [2023-04-01 12:08:54,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:08:54,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:08:54,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:08:54,375 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-01 12:08:54,376 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:08:54,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679863586] [2023-04-01 12:08:54,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679863586] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:08:54,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:08:54,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 12:08:54,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959305247] [2023-04-01 12:08:54,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:08:54,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 12:08:54,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:08:54,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 12:08:54,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-04-01 12:08:54,378 INFO L87 Difference]: Start difference. First operand 100 states and 113 transitions. Second operand has 7 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 4 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) [2023-04-01 12:08:54,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:08:54,664 INFO L93 Difference]: Finished difference Result 300 states and 356 transitions. [2023-04-01 12:08:54,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 12:08:54,666 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 4 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) Word has length 57 [2023-04-01 12:08:54,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:08:54,670 INFO L225 Difference]: With dead ends: 300 [2023-04-01 12:08:54,671 INFO L226 Difference]: Without dead ends: 225 [2023-04-01 12:08:54,671 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 12:08:54,672 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 212 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 12:08:54,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 434 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 12:08:54,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2023-04-01 12:08:54,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 203. [2023-04-01 12:08:54,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 107 states have (on average 1.280373831775701) internal successors, (137), 124 states have internal predecessors, (137), 52 states have call successors, (52), 47 states have call predecessors, (52), 43 states have return successors, (49), 44 states have call predecessors, (49), 48 states have call successors, (49) [2023-04-01 12:08:54,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 238 transitions. [2023-04-01 12:08:54,700 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 238 transitions. Word has length 57 [2023-04-01 12:08:54,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:08:54,701 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 238 transitions. [2023-04-01 12:08:54,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 4 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) [2023-04-01 12:08:54,704 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 238 transitions. [2023-04-01 12:08:54,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-04-01 12:08:54,711 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:08:54,711 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:08:54,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 12:08:54,712 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:08:54,712 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:08:54,712 INFO L85 PathProgramCache]: Analyzing trace with hash -565181293, now seen corresponding path program 1 times [2023-04-01 12:08:54,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:08:54,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796020420] [2023-04-01 12:08:54,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:08:54,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:08:54,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:08:54,931 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 12:08:54,932 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:08:54,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796020420] [2023-04-01 12:08:54,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796020420] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:08:54,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:08:54,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 12:08:54,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409284579] [2023-04-01 12:08:54,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:08:54,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 12:08:54,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:08:54,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 12:08:54,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-01 12:08:54,934 INFO L87 Difference]: Start difference. First operand 203 states and 238 transitions. Second operand has 7 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 3 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2023-04-01 12:08:55,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:08:55,252 INFO L93 Difference]: Finished difference Result 527 states and 671 transitions. [2023-04-01 12:08:55,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-01 12:08:55,253 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 3 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 61 [2023-04-01 12:08:55,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:08:55,258 INFO L225 Difference]: With dead ends: 527 [2023-04-01 12:08:55,258 INFO L226 Difference]: Without dead ends: 349 [2023-04-01 12:08:55,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2023-04-01 12:08:55,267 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 123 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 12:08:55,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 232 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 12:08:55,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2023-04-01 12:08:55,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 304. [2023-04-01 12:08:55,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 164 states have (on average 1.225609756097561) internal successors, (201), 181 states have internal predecessors, (201), 73 states have call successors, (73), 66 states have call predecessors, (73), 66 states have return successors, (84), 70 states have call predecessors, (84), 69 states have call successors, (84) [2023-04-01 12:08:55,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 358 transitions. [2023-04-01 12:08:55,316 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 358 transitions. Word has length 61 [2023-04-01 12:08:55,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:08:55,317 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 358 transitions. [2023-04-01 12:08:55,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 3 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2023-04-01 12:08:55,317 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 358 transitions. [2023-04-01 12:08:55,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-04-01 12:08:55,320 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:08:55,320 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:08:55,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 12:08:55,320 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:08:55,320 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:08:55,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1805363602, now seen corresponding path program 1 times [2023-04-01 12:08:55,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:08:55,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183512892] [2023-04-01 12:08:55,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:08:55,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:08:55,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:08:55,675 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-01 12:08:55,675 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:08:55,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183512892] [2023-04-01 12:08:55,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183512892] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:08:55,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:08:55,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-01 12:08:55,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369908788] [2023-04-01 12:08:55,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:08:55,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 12:08:55,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:08:55,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 12:08:55,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-04-01 12:08:55,677 INFO L87 Difference]: Start difference. First operand 304 states and 358 transitions. Second operand has 12 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 states have internal predecessors, (39), 4 states have call successors, (20), 3 states have call predecessors, (20), 6 states have return successors, (14), 7 states have call predecessors, (14), 4 states have call successors, (14) [2023-04-01 12:08:56,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:08:56,082 INFO L93 Difference]: Finished difference Result 967 states and 1161 transitions. [2023-04-01 12:08:56,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-01 12:08:56,082 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 states have internal predecessors, (39), 4 states have call successors, (20), 3 states have call predecessors, (20), 6 states have return successors, (14), 7 states have call predecessors, (14), 4 states have call successors, (14) Word has length 74 [2023-04-01 12:08:56,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:08:56,086 INFO L225 Difference]: With dead ends: 967 [2023-04-01 12:08:56,087 INFO L226 Difference]: Without dead ends: 688 [2023-04-01 12:08:56,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2023-04-01 12:08:56,089 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 145 mSDsluCounter, 659 mSDsCounter, 0 mSdLazyCounter, 684 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 811 SdHoareTripleChecker+Invalid, 689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-01 12:08:56,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 811 Invalid, 689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 684 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-01 12:08:56,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2023-04-01 12:08:56,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 671. [2023-04-01 12:08:56,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 671 states, 379 states have (on average 1.2321899736147757) internal successors, (467), 411 states have internal predecessors, (467), 153 states have call successors, (153), 140 states have call predecessors, (153), 138 states have return successors, (178), 149 states have call predecessors, (178), 149 states have call successors, (178) [2023-04-01 12:08:56,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 798 transitions. [2023-04-01 12:08:56,163 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 798 transitions. Word has length 74 [2023-04-01 12:08:56,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:08:56,164 INFO L495 AbstractCegarLoop]: Abstraction has 671 states and 798 transitions. [2023-04-01 12:08:56,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 states have internal predecessors, (39), 4 states have call successors, (20), 3 states have call predecessors, (20), 6 states have return successors, (14), 7 states have call predecessors, (14), 4 states have call successors, (14) [2023-04-01 12:08:56,164 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 798 transitions. [2023-04-01 12:08:56,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-04-01 12:08:56,167 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:08:56,167 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:08:56,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-01 12:08:56,167 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:08:56,167 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:08:56,168 INFO L85 PathProgramCache]: Analyzing trace with hash -834234808, now seen corresponding path program 1 times [2023-04-01 12:08:56,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:08:56,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773345668] [2023-04-01 12:08:56,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:08:56,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:08:56,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:08:56,385 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-01 12:08:56,386 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:08:56,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773345668] [2023-04-01 12:08:56,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773345668] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:08:56,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:08:56,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 12:08:56,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473814661] [2023-04-01 12:08:56,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:08:56,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 12:08:56,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:08:56,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 12:08:56,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-01 12:08:56,387 INFO L87 Difference]: Start difference. First operand 671 states and 798 transitions. Second operand has 9 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 4 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2023-04-01 12:08:56,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:08:56,830 INFO L93 Difference]: Finished difference Result 2138 states and 2619 transitions. [2023-04-01 12:08:56,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 12:08:56,831 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 4 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) Word has length 77 [2023-04-01 12:08:56,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:08:56,840 INFO L225 Difference]: With dead ends: 2138 [2023-04-01 12:08:56,840 INFO L226 Difference]: Without dead ends: 1644 [2023-04-01 12:08:56,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2023-04-01 12:08:56,843 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 263 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-01 12:08:56,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 528 Invalid, 690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-01 12:08:56,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1644 states. [2023-04-01 12:08:56,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1644 to 1391. [2023-04-01 12:08:56,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1391 states, 787 states have (on average 1.236340533672173) internal successors, (973), 848 states have internal predecessors, (973), 312 states have call successors, (312), 281 states have call predecessors, (312), 291 states have return successors, (392), 317 states have call predecessors, (392), 308 states have call successors, (392) [2023-04-01 12:08:56,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1391 states to 1391 states and 1677 transitions. [2023-04-01 12:08:56,939 INFO L78 Accepts]: Start accepts. Automaton has 1391 states and 1677 transitions. Word has length 77 [2023-04-01 12:08:56,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:08:56,940 INFO L495 AbstractCegarLoop]: Abstraction has 1391 states and 1677 transitions. [2023-04-01 12:08:56,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 4 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2023-04-01 12:08:56,941 INFO L276 IsEmpty]: Start isEmpty. Operand 1391 states and 1677 transitions. [2023-04-01 12:08:56,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-04-01 12:08:56,942 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:08:56,943 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:08:56,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-01 12:08:56,943 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:08:56,944 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:08:56,944 INFO L85 PathProgramCache]: Analyzing trace with hash 220703227, now seen corresponding path program 1 times [2023-04-01 12:08:56,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:08:56,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038117765] [2023-04-01 12:08:56,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:08:56,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:08:56,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:08:57,111 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 20 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-04-01 12:08:57,111 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:08:57,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038117765] [2023-04-01 12:08:57,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038117765] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 12:08:57,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2079102650] [2023-04-01 12:08:57,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:08:57,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 12:08:57,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 12:08:57,117 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 12:08:57,137 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 12:08:57,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:08:57,242 INFO L262 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 8 conjunts are in the unsatisfiable core [2023-04-01 12:08:57,251 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 12:08:57,446 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 22 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:08:57,446 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 12:08:57,698 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 20 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-04-01 12:08:57,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2079102650] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 12:08:57,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [503521993] [2023-04-01 12:08:57,750 INFO L159 IcfgInterpreter]: Started Sifa with 86 locations of interest [2023-04-01 12:08:57,751 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 12:08:57,754 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 12:08:57,758 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 12:08:57,758 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 12:08:58,193 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 31 for LOIs [2023-04-01 12:08:58,232 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 131 for LOIs [2023-04-01 12:08:59,645 INFO L197 IcfgInterpreter]: Interpreting procedure runTest with input of size 131 for LOIs [2023-04-01 12:08:59,900 INFO L197 IcfgInterpreter]: Interpreting procedure setup with input of size 121 for LOIs [2023-04-01 12:08:59,914 INFO L197 IcfgInterpreter]: Interpreting procedure select_features with input of size 121 for LOIs [2023-04-01 12:08:59,941 INFO L197 IcfgInterpreter]: Interpreting procedure test with input of size 131 for LOIs [2023-04-01 12:09:04,304 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-04-01 12:09:04,388 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-04-01 12:09:04,453 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-04-01 12:09:04,752 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2023-04-01 12:09:04,950 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 7 [2023-04-01 12:09:05,159 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 159 for LOIs [2023-04-01 12:09:05,268 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 124 for LOIs [2023-04-01 12:09:06,402 INFO L197 IcfgInterpreter]: Interpreting procedure lowerWaterLevel with input of size 123 for LOIs [2023-04-01 12:09:06,421 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification5_spec__3 with input of size 118 for LOIs [2023-04-01 12:09:06,814 INFO L197 IcfgInterpreter]: Interpreting procedure __automaton_fail with input of size 128 for LOIs [2023-04-01 12:09:06,829 INFO L197 IcfgInterpreter]: Interpreting procedure getWaterLevel with input of size 118 for LOIs [2023-04-01 12:09:06,842 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification5_spec__2 with input of size 118 for LOIs [2023-04-01 12:09:07,031 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 123 for LOIs [2023-04-01 12:09:07,082 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification5_spec__1 with input of size 123 for LOIs [2023-04-01 12:09:07,097 INFO L197 IcfgInterpreter]: Interpreting procedure valid_product with input of size 121 for LOIs [2023-04-01 12:09:07,118 INFO L197 IcfgInterpreter]: Interpreting procedure select_helpers with input of size 121 for LOIs [2023-04-01 12:09:07,131 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment with input of size 128 for LOIs [2023-04-01 12:09:08,060 INFO L197 IcfgInterpreter]: Interpreting procedure isHighWaterLevel with input of size 119 for LOIs [2023-04-01 12:09:08,306 INFO L197 IcfgInterpreter]: Interpreting procedure isHighWaterSensorDry with input of size 119 for LOIs [2023-04-01 12:09:08,329 INFO L197 IcfgInterpreter]: Interpreting procedure activatePump with input of size 131 for LOIs [2023-04-01 12:09:08,346 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 122 for LOIs [2023-04-01 12:09:08,359 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-01 12:09:27,525 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '11023#(and (= (select |#length| 15) 25) (= 9 (select |#length| 5)) (= (select |#length| 9) 21) (= 30 (select |#length| 7)) (= 1 (select |#valid| 5)) (= (select |#length| 3) 12) (= (select |#valid| 15) 1) (= (select |#valid| 9) 1) (not (= ~pumpRunning~0 0)) (= (select |#length| 12) 25) (<= ~pumpRunning~0 2147483647) (= (select |#valid| 11) 1) (= ~methaneLevelCritical~0 0) (= 30 (select |#length| 4)) (not (= 2 ~waterLevel~0)) (= 31 (select |#length| 2)) (= ~head~0.offset 0) (= 2 (select |#length| 1)) (= (select |#length| 8) 9) (= (select |#valid| 3) 1) (= (select |#valid| 7) 1) (= 30 (select |#length| 13)) (= 1 ~systemActive~0) (= 30 (select |#length| 10)) (= (select |#valid| 12) 1) (not (= |#StackHeapBarrier| 0)) (= (select |#valid| 4) 1) (= (select |#valid| 1) 1) (= (select |#length| 6) 21) (= (select |#valid| 14) 1) (= 9 (select |#length| 14)) (= (select |#valid| 0) 0) (= ~head~0.base 0) (= (select |#valid| 2) 1) (<= 0 (+ ~pumpRunning~0 2147483648)) (= |#NULL.offset| 0) (= 9 (select |#length| 11)) (= (select (select |#memory_int| 1) 0) 48) (= (select |#valid| 6) 1) (= (select (select |#memory_int| 1) 1) 0) (= ~switchedOnBeforeTS~0 0) (= (select |#valid| 10) 1) (= (select |#valid| 8) 1) (= (select |#valid| 13) 1) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2023-04-01 12:09:27,526 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-01 12:09:27,526 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 12:09:27,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 19 [2023-04-01 12:09:27,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255281140] [2023-04-01 12:09:27,526 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 12:09:27,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-04-01 12:09:27,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:09:27,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-04-01 12:09:27,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=453, Invalid=4949, Unknown=0, NotChecked=0, Total=5402 [2023-04-01 12:09:27,529 INFO L87 Difference]: Start difference. First operand 1391 states and 1677 transitions. Second operand has 19 states, 12 states have (on average 8.25) internal successors, (99), 15 states have internal predecessors, (99), 7 states have call successors, (45), 6 states have call predecessors, (45), 11 states have return successors, (43), 10 states have call predecessors, (43), 6 states have call successors, (43) [2023-04-01 12:09:28,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:09:28,688 INFO L93 Difference]: Finished difference Result 2990 states and 3741 transitions. [2023-04-01 12:09:28,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-04-01 12:09:28,689 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 12 states have (on average 8.25) internal successors, (99), 15 states have internal predecessors, (99), 7 states have call successors, (45), 6 states have call predecessors, (45), 11 states have return successors, (43), 10 states have call predecessors, (43), 6 states have call successors, (43) Word has length 116 [2023-04-01 12:09:28,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:09:28,696 INFO L225 Difference]: With dead ends: 2990 [2023-04-01 12:09:28,696 INFO L226 Difference]: Without dead ends: 1767 [2023-04-01 12:09:28,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 285 SyntacticMatches, 7 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3606 ImplicationChecksByTransitivity, 19.8s TimeCoverageRelationStatistics Valid=700, Invalid=8806, Unknown=0, NotChecked=0, Total=9506 [2023-04-01 12:09:28,702 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 321 mSDsluCounter, 1107 mSDsCounter, 0 mSdLazyCounter, 936 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 1313 SdHoareTripleChecker+Invalid, 1119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 936 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-01 12:09:28,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 1313 Invalid, 1119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 936 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-01 12:09:28,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1767 states. [2023-04-01 12:09:28,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1767 to 1220. [2023-04-01 12:09:28,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1220 states, 682 states have (on average 1.2243401759530792) internal successors, (835), 755 states have internal predecessors, (835), 282 states have call successors, (282), 265 states have call predecessors, (282), 255 states have return successors, (314), 255 states have call predecessors, (314), 278 states have call successors, (314) [2023-04-01 12:09:28,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1220 states to 1220 states and 1431 transitions. [2023-04-01 12:09:28,779 INFO L78 Accepts]: Start accepts. Automaton has 1220 states and 1431 transitions. Word has length 116 [2023-04-01 12:09:28,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:09:28,779 INFO L495 AbstractCegarLoop]: Abstraction has 1220 states and 1431 transitions. [2023-04-01 12:09:28,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 12 states have (on average 8.25) internal successors, (99), 15 states have internal predecessors, (99), 7 states have call successors, (45), 6 states have call predecessors, (45), 11 states have return successors, (43), 10 states have call predecessors, (43), 6 states have call successors, (43) [2023-04-01 12:09:28,780 INFO L276 IsEmpty]: Start isEmpty. Operand 1220 states and 1431 transitions. [2023-04-01 12:09:28,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-04-01 12:09:28,784 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:09:28,785 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:09:28,793 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-01 12:09:28,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 12:09:28,991 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:09:28,991 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:09:28,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1924097983, now seen corresponding path program 1 times [2023-04-01 12:09:28,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:09:28,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134655589] [2023-04-01 12:09:28,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:09:28,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:09:29,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:09:29,064 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2023-04-01 12:09:29,064 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:09:29,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134655589] [2023-04-01 12:09:29,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134655589] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:09:29,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:09:29,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 12:09:29,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126664229] [2023-04-01 12:09:29,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:09:29,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 12:09:29,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:09:29,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 12:09:29,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 12:09:29,066 INFO L87 Difference]: Start difference. First operand 1220 states and 1431 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2023-04-01 12:09:29,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:09:29,120 INFO L93 Difference]: Finished difference Result 1936 states and 2278 transitions. [2023-04-01 12:09:29,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 12:09:29,121 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 168 [2023-04-01 12:09:29,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:09:29,124 INFO L225 Difference]: With dead ends: 1936 [2023-04-01 12:09:29,124 INFO L226 Difference]: Without dead ends: 769 [2023-04-01 12:09:29,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 12:09:29,128 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 43 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 12:09:29,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 217 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 12:09:29,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2023-04-01 12:09:29,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 749. [2023-04-01 12:09:29,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 749 states, 411 states have (on average 1.2092457420924574) internal successors, (497), 462 states have internal predecessors, (497), 179 states have call successors, (179), 169 states have call predecessors, (179), 158 states have return successors, (185), 157 states have call predecessors, (185), 175 states have call successors, (185) [2023-04-01 12:09:29,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 861 transitions. [2023-04-01 12:09:29,165 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 861 transitions. Word has length 168 [2023-04-01 12:09:29,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:09:29,166 INFO L495 AbstractCegarLoop]: Abstraction has 749 states and 861 transitions. [2023-04-01 12:09:29,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2023-04-01 12:09:29,167 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 861 transitions. [2023-04-01 12:09:29,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2023-04-01 12:09:29,169 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:09:29,169 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:09:29,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-01 12:09:29,169 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:09:29,169 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:09:29,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1964329851, now seen corresponding path program 1 times [2023-04-01 12:09:29,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:09:29,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346144766] [2023-04-01 12:09:29,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:09:29,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:09:29,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:09:29,442 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 73 proven. 13 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2023-04-01 12:09:29,443 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:09:29,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346144766] [2023-04-01 12:09:29,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346144766] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 12:09:29,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828945002] [2023-04-01 12:09:29,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:09:29,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 12:09:29,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 12:09:29,444 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 12:09:29,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-01 12:09:29,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:09:29,595 INFO L262 TraceCheckSpWp]: Trace formula consists of 707 conjuncts, 27 conjunts are in the unsatisfiable core [2023-04-01 12:09:29,600 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 12:09:29,702 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 120 proven. 13 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-04-01 12:09:29,702 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 12:09:30,006 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 77 proven. 10 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2023-04-01 12:09:30,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1828945002] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 12:09:30,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1325944257] [2023-04-01 12:09:30,012 INFO L159 IcfgInterpreter]: Started Sifa with 96 locations of interest [2023-04-01 12:09:30,012 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 12:09:30,013 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 12:09:30,013 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 12:09:30,013 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 12:09:30,183 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 31 for LOIs [2023-04-01 12:09:30,199 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 131 for LOIs [2023-04-01 12:09:30,995 INFO L197 IcfgInterpreter]: Interpreting procedure runTest with input of size 131 for LOIs [2023-04-01 12:09:31,226 INFO L197 IcfgInterpreter]: Interpreting procedure test with input of size 131 for LOIs [2023-04-01 12:09:44,308 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2023-04-01 12:09:48,899 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2023-04-01 12:09:49,286 INFO L197 IcfgInterpreter]: Interpreting procedure stopSystem with input of size 157 for LOIs [2023-04-01 12:09:49,517 INFO L197 IcfgInterpreter]: Interpreting procedure deactivatePump with input of size 157 for LOIs [2023-04-01 12:09:49,537 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 225 for LOIs [2023-04-01 12:09:49,671 INFO L197 IcfgInterpreter]: Interpreting procedure startSystem with input of size 154 for LOIs [2023-04-01 12:09:49,691 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 165 for LOIs