/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_product38.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 12:08:53,604 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 12:08:53,605 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 12:08:53,627 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 12:08:53,627 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 12:08:53,629 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 12:08:53,632 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 12:08:53,634 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 12:08:53,635 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 12:08:53,639 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 12:08:53,640 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 12:08:53,641 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 12:08:53,641 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 12:08:53,645 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 12:08:53,646 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 12:08:53,647 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 12:08:53,647 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 12:08:53,648 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 12:08:53,649 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 12:08:53,653 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 12:08:53,654 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 12:08:53,655 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 12:08:53,656 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 12:08:53,657 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 12:08:53,663 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 12:08:53,663 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 12:08:53,663 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 12:08:53,664 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 12:08:53,664 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 12:08:53,665 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 12:08:53,665 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 12:08:53,666 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 12:08:53,667 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 12:08:53,667 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 12:08:53,668 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 12:08:53,668 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 12:08:53,668 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 12:08:53,668 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 12:08:53,668 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 12:08:53,669 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 12:08:53,669 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 12:08:53,670 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 12:08:53,690 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 12:08:53,690 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 12:08:53,690 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 12:08:53,691 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 12:08:53,691 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 12:08:53,691 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 12:08:53,691 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 12:08:53,691 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 12:08:53,691 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 12:08:53,692 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 12:08:53,692 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 12:08:53,692 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 12:08:53,692 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 12:08:53,692 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 12:08:53,692 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 12:08:53,692 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 12:08:53,692 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 12:08:53,692 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 12:08:53,693 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 12:08:53,693 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 12:08:53,693 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 12:08:53,693 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 12:08:53,693 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 12:08:53,693 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 12:08:53,693 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 12:08:53,693 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 12:08:53,693 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 12:08:53,693 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 12:08:53,693 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 12:08:53,693 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 12:08:53,694 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 12:08:53,694 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 12:08:53,694 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 12:08:53,694 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 12:08:53,694 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 12:08:53,694 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 12:08:53,694 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 12:08:53,694 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 12:08:53,694 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 12:08:53,694 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 12:08:53,694 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 12:08:53,694 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> EqDomain [2023-04-01 12:08:53,907 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 12:08:53,926 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 12:08:53,929 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 12:08:53,930 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 12:08:53,931 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 12:08:53,932 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec5_product38.cil.c [2023-04-01 12:08:54,946 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 12:08:55,174 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 12:08:55,175 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec5_product38.cil.c [2023-04-01 12:08:55,185 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5559d309/0ae30106469d4cc2b7ad43a1f3c953b3/FLAGdcf24dd6a [2023-04-01 12:08:55,198 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5559d309/0ae30106469d4cc2b7ad43a1f3c953b3 [2023-04-01 12:08:55,200 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 12:08:55,201 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 12:08:55,203 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 12:08:55,203 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 12:08:55,205 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 12:08:55,206 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:08:55" (1/1) ... [2023-04-01 12:08:55,207 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c5aa9cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:08:55, skipping insertion in model container [2023-04-01 12:08:55,207 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:08:55" (1/1) ... [2023-04-01 12:08:55,212 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 12:08:55,250 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 12:08:55,346 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_product38.cil.c[1605,1618] [2023-04-01 12:08:55,408 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 12:08:55,416 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 12:08:55,425 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_product38.cil.c[1605,1618] [2023-04-01 12:08:55,468 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 12:08:55,480 INFO L208 MainTranslator]: Completed translation [2023-04-01 12:08:55,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:08:55 WrapperNode [2023-04-01 12:08:55,480 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 12:08:55,481 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 12:08:55,481 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 12:08:55,481 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 12:08:55,494 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:08:55" (1/1) ... [2023-04-01 12:08:55,494 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:08:55" (1/1) ... [2023-04-01 12:08:55,503 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:08:55" (1/1) ... [2023-04-01 12:08:55,503 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:08:55" (1/1) ... [2023-04-01 12:08:55,539 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:08:55" (1/1) ... [2023-04-01 12:08:55,543 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:08:55" (1/1) ... [2023-04-01 12:08:55,545 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:08:55" (1/1) ... [2023-04-01 12:08:55,546 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:08:55" (1/1) ... [2023-04-01 12:08:55,550 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 12:08:55,551 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 12:08:55,551 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 12:08:55,551 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 12:08:55,552 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:08:55" (1/1) ... [2023-04-01 12:08:55,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 12:08:55,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 12:08:55,591 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 12:08:55,596 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 12:08:55,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 12:08:55,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 12:08:55,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2023-04-01 12:08:55,619 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 12:08:55,619 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-04-01 12:08:55,619 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-04-01 12:08:55,619 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2023-04-01 12:08:55,619 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2023-04-01 12:08:55,619 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2023-04-01 12:08:55,619 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 12:08:55,619 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2023-04-01 12:08:55,619 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2023-04-01 12:08:55,619 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2023-04-01 12:08:55,620 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2023-04-01 12:08:55,620 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2023-04-01 12:08:55,620 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2023-04-01 12:08:55,620 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2023-04-01 12:08:55,620 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2023-04-01 12:08:55,620 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2023-04-01 12:08:55,620 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2023-04-01 12:08:55,620 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2023-04-01 12:08:55,620 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2023-04-01 12:08:55,620 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2023-04-01 12:08:55,620 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2023-04-01 12:08:55,620 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2023-04-01 12:08:55,621 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2023-04-01 12:08:55,621 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-04-01 12:08:55,621 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2023-04-01 12:08:55,621 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2023-04-01 12:08:55,621 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2023-04-01 12:08:55,621 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2023-04-01 12:08:55,621 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2023-04-01 12:08:55,621 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2023-04-01 12:08:55,621 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2023-04-01 12:08:55,621 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2023-04-01 12:08:55,621 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2023-04-01 12:08:55,621 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2023-04-01 12:08:55,622 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2023-04-01 12:08:55,622 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2023-04-01 12:08:55,622 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2023-04-01 12:08:55,622 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2023-04-01 12:08:55,622 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2023-04-01 12:08:55,622 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 12:08:55,622 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 12:08:55,622 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 12:08:55,622 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 12:08:55,622 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 12:08:55,622 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2023-04-01 12:08:55,623 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-04-01 12:08:55,623 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-04-01 12:08:55,623 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-04-01 12:08:55,623 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2023-04-01 12:08:55,623 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2023-04-01 12:08:55,623 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2023-04-01 12:08:55,623 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2023-04-01 12:08:55,623 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2023-04-01 12:08:55,623 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2023-04-01 12:08:55,623 INFO L130 BoogieDeclarations]: Found specification of procedure test [2023-04-01 12:08:55,623 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2023-04-01 12:08:55,623 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2023-04-01 12:08:55,624 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2023-04-01 12:08:55,624 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2023-04-01 12:08:55,624 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 12:08:55,624 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2023-04-01 12:08:55,624 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2023-04-01 12:08:55,624 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2023-04-01 12:08:55,624 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2023-04-01 12:08:55,624 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-01 12:08:55,624 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-01 12:08:55,624 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2023-04-01 12:08:55,624 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-01 12:08:55,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-01 12:08:55,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 12:08:55,625 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-01 12:08:55,625 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2023-04-01 12:08:55,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 12:08:55,625 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2023-04-01 12:08:55,625 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2023-04-01 12:08:55,625 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 12:08:55,625 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2023-04-01 12:08:55,625 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2023-04-01 12:08:55,625 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2023-04-01 12:08:55,625 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2023-04-01 12:08:55,625 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2023-04-01 12:08:55,625 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2023-04-01 12:08:55,626 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2023-04-01 12:08:55,626 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2023-04-01 12:08:55,626 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2023-04-01 12:08:55,626 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2023-04-01 12:08:55,626 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2023-04-01 12:08:55,626 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2023-04-01 12:08:55,626 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2023-04-01 12:08:55,626 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2023-04-01 12:08:55,626 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2023-04-01 12:08:55,626 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2023-04-01 12:08:55,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 12:08:55,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 12:08:55,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 12:08:55,766 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 12:08:55,768 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 12:08:56,208 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 12:08:56,324 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 12:08:56,325 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-04-01 12:08:56,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:08:56 BoogieIcfgContainer [2023-04-01 12:08:56,329 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 12:08:56,331 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 12:08:56,331 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 12:08:56,333 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 12:08:56,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 12:08:55" (1/3) ... [2023-04-01 12:08:56,334 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14f37c2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:08:56, skipping insertion in model container [2023-04-01 12:08:56,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:08:55" (2/3) ... [2023-04-01 12:08:56,334 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14f37c2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:08:56, skipping insertion in model container [2023-04-01 12:08:56,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:08:56" (3/3) ... [2023-04-01 12:08:56,337 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product38.cil.c [2023-04-01 12:08:56,351 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 12:08:56,352 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 12:08:56,395 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 12:08:56,401 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;@2e09b026, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 12:08:56,401 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 12:08:56,405 INFO L276 IsEmpty]: Start isEmpty. Operand has 151 states, 68 states have (on average 1.2647058823529411) internal successors, (86), 81 states have internal predecessors, (86), 49 states have call successors, (49), 31 states have call predecessors, (49), 31 states have return successors, (49), 45 states have call predecessors, (49), 49 states have call successors, (49) [2023-04-01 12:08:56,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-04-01 12:08:56,412 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:08:56,412 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 12:08:56,413 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:08:56,416 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:08:56,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1680419242, now seen corresponding path program 1 times [2023-04-01 12:08:56,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:08:56,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202612156] [2023-04-01 12:08:56,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:08:56,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:08:56,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:08:56,626 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 12:08:56,627 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:08:56,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202612156] [2023-04-01 12:08:56,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202612156] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:08:56,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:08:56,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-04-01 12:08:56,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489796147] [2023-04-01 12:08:56,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:08:56,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-04-01 12:08:56,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:08:56,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-04-01 12:08:56,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-01 12:08:56,663 INFO L87 Difference]: Start difference. First operand has 151 states, 68 states have (on average 1.2647058823529411) internal successors, (86), 81 states have internal predecessors, (86), 49 states have call successors, (49), 31 states have call predecessors, (49), 31 states have return successors, (49), 45 states have call predecessors, (49), 49 states have call successors, (49) 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 12:08:56,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:08:56,722 INFO L93 Difference]: Finished difference Result 232 states and 279 transitions. [2023-04-01 12:08:56,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-04-01 12:08:56,724 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 12:08:56,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:08:56,730 INFO L225 Difference]: With dead ends: 232 [2023-04-01 12:08:56,731 INFO L226 Difference]: Without dead ends: 118 [2023-04-01 12:08:56,734 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 12:08:56,736 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 12:08:56,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 126 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 12:08:56,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2023-04-01 12:08:56,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2023-04-01 12:08:56,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 59 states have (on average 1.2203389830508475) internal successors, (72), 69 states have internal predecessors, (72), 34 states have call successors, (34), 29 states have call predecessors, (34), 24 states have return successors, (29), 25 states have call predecessors, (29), 29 states have call successors, (29) [2023-04-01 12:08:56,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 135 transitions. [2023-04-01 12:08:56,790 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 135 transitions. Word has length 52 [2023-04-01 12:08:56,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:08:56,790 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 135 transitions. [2023-04-01 12:08:56,790 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 12:08:56,790 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 135 transitions. [2023-04-01 12:08:56,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-04-01 12:08:56,792 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:08:56,792 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 12:08:56,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 12:08:56,793 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:08:56,793 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:08:56,793 INFO L85 PathProgramCache]: Analyzing trace with hash 2136445887, now seen corresponding path program 1 times [2023-04-01 12:08:56,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:08:56,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792543973] [2023-04-01 12:08:56,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:08:56,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:08:56,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:08:56,924 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 12:08:56,924 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:08:56,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792543973] [2023-04-01 12:08:56,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792543973] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:08:56,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:08:56,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 12:08:56,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136787861] [2023-04-01 12:08:56,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:08:56,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 12:08:56,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:08:56,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 12:08:56,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 12:08:56,928 INFO L87 Difference]: Start difference. First operand 118 states and 135 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 12:08:56,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:08:56,972 INFO L93 Difference]: Finished difference Result 186 states and 213 transitions. [2023-04-01 12:08:56,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 12:08:56,973 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 12:08:56,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:08:56,974 INFO L225 Difference]: With dead ends: 186 [2023-04-01 12:08:56,974 INFO L226 Difference]: Without dead ends: 110 [2023-04-01 12:08:56,975 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 12:08:56,976 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 9 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 12:08:56,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 199 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 12:08:56,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2023-04-01 12:08:56,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2023-04-01 12:08:56,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 54 states have (on average 1.2222222222222223) internal successors, (66), 64 states have internal predecessors, (66), 31 states have call successors, (31), 28 states have call predecessors, (31), 24 states have return successors, (27), 23 states have call predecessors, (27), 27 states have call successors, (27) [2023-04-01 12:08:56,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 124 transitions. [2023-04-01 12:08:56,984 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 124 transitions. Word has length 53 [2023-04-01 12:08:56,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:08:56,984 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 124 transitions. [2023-04-01 12:08:56,985 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 12:08:56,985 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 124 transitions. [2023-04-01 12:08:56,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-04-01 12:08:56,986 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:08:56,986 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] [2023-04-01 12:08:56,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 12:08:56,986 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:08:56,987 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:08:56,987 INFO L85 PathProgramCache]: Analyzing trace with hash 529953115, now seen corresponding path program 1 times [2023-04-01 12:08:56,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:08:56,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582403149] [2023-04-01 12:08:56,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:08:56,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:08:57,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:08:57,122 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 12:08:57,122 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:08:57,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582403149] [2023-04-01 12:08:57,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582403149] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:08:57,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:08:57,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 12:08:57,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434116166] [2023-04-01 12:08:57,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:08:57,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 12:08:57,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:08:57,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 12:08:57,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-04-01 12:08:57,125 INFO L87 Difference]: Start difference. First operand 110 states and 124 transitions. Second operand has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 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 12:08:57,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:08:57,301 INFO L93 Difference]: Finished difference Result 195 states and 224 transitions. [2023-04-01 12:08:57,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-01 12:08:57,302 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 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 56 [2023-04-01 12:08:57,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:08:57,305 INFO L225 Difference]: With dead ends: 195 [2023-04-01 12:08:57,306 INFO L226 Difference]: Without dead ends: 110 [2023-04-01 12:08:57,310 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 12:08:57,313 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 113 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 12:08:57,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 292 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 12:08:57,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2023-04-01 12:08:57,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2023-04-01 12:08:57,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 54 states have (on average 1.2037037037037037) internal successors, (65), 63 states have internal predecessors, (65), 31 states have call successors, (31), 28 states have call predecessors, (31), 24 states have return successors, (27), 23 states have call predecessors, (27), 27 states have call successors, (27) [2023-04-01 12:08:57,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 123 transitions. [2023-04-01 12:08:57,325 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 123 transitions. Word has length 56 [2023-04-01 12:08:57,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:08:57,326 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 123 transitions. [2023-04-01 12:08:57,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 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 12:08:57,326 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 123 transitions. [2023-04-01 12:08:57,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-04-01 12:08:57,328 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:08:57,328 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] [2023-04-01 12:08:57,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 12:08:57,328 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:08:57,333 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:08:57,333 INFO L85 PathProgramCache]: Analyzing trace with hash -271662285, now seen corresponding path program 1 times [2023-04-01 12:08:57,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:08:57,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242427945] [2023-04-01 12:08:57,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:08:57,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:08:57,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:08:57,494 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 12:08:57,494 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:08:57,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242427945] [2023-04-01 12:08:57,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242427945] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:08:57,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:08:57,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 12:08:57,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974210516] [2023-04-01 12:08:57,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:08:57,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 12:08:57,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:08:57,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 12:08:57,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 12:08:57,496 INFO L87 Difference]: Start difference. First operand 110 states and 123 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 5 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (13), 4 states have call predecessors, (13), 5 states have call successors, (13) [2023-04-01 12:08:57,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:08:57,795 INFO L93 Difference]: Finished difference Result 289 states and 342 transitions. [2023-04-01 12:08:57,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 12:08:57,795 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 5 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (13), 4 states have call predecessors, (13), 5 states have call successors, (13) Word has length 69 [2023-04-01 12:08:57,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:08:57,801 INFO L225 Difference]: With dead ends: 289 [2023-04-01 12:08:57,801 INFO L226 Difference]: Without dead ends: 204 [2023-04-01 12:08:57,802 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-04-01 12:08:57,803 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 149 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 12:08:57,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 150 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 12:08:57,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2023-04-01 12:08:57,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 187. [2023-04-01 12:08:57,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 98 states have (on average 1.183673469387755) internal successors, (116), 107 states have internal predecessors, (116), 45 states have call successors, (45), 42 states have call predecessors, (45), 43 states have return successors, (48), 44 states have call predecessors, (48), 41 states have call successors, (48) [2023-04-01 12:08:57,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 209 transitions. [2023-04-01 12:08:57,833 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 209 transitions. Word has length 69 [2023-04-01 12:08:57,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:08:57,833 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 209 transitions. [2023-04-01 12:08:57,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 5 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (13), 4 states have call predecessors, (13), 5 states have call successors, (13) [2023-04-01 12:08:57,834 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 209 transitions. [2023-04-01 12:08:57,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-04-01 12:08:57,835 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:08:57,835 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:08:57,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 12:08:57,835 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:08:57,836 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:08:57,836 INFO L85 PathProgramCache]: Analyzing trace with hash 289077582, now seen corresponding path program 1 times [2023-04-01 12:08:57,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:08:57,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526883705] [2023-04-01 12:08:57,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:08:57,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:08:57,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:08:58,052 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 12:08:58,052 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:08:58,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526883705] [2023-04-01 12:08:58,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526883705] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:08:58,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:08:58,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-01 12:08:58,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299466625] [2023-04-01 12:08:58,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:08:58,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 12:08:58,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:08:58,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 12:08:58,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-04-01 12:08:58,054 INFO L87 Difference]: Start difference. First operand 187 states and 209 transitions. Second operand has 12 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 4 states have call successors, (21), 3 states have call predecessors, (21), 6 states have return successors, (15), 7 states have call predecessors, (15), 4 states have call successors, (15) [2023-04-01 12:08:58,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:08:58,470 INFO L93 Difference]: Finished difference Result 503 states and 578 transitions. [2023-04-01 12:08:58,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-01 12:08:58,471 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 4 states have call successors, (21), 3 states have call predecessors, (21), 6 states have return successors, (15), 7 states have call predecessors, (15), 4 states have call successors, (15) Word has length 78 [2023-04-01 12:08:58,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:08:58,474 INFO L225 Difference]: With dead ends: 503 [2023-04-01 12:08:58,474 INFO L226 Difference]: Without dead ends: 341 [2023-04-01 12:08:58,475 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 12:08:58,477 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 343 mSDsluCounter, 728 mSDsCounter, 0 mSdLazyCounter, 644 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 891 SdHoareTripleChecker+Invalid, 812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-01 12:08:58,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [348 Valid, 891 Invalid, 812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 644 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-01 12:08:58,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2023-04-01 12:08:58,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 329. [2023-04-01 12:08:58,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 179 states have (on average 1.1955307262569832) internal successors, (214), 194 states have internal predecessors, (214), 77 states have call successors, (77), 72 states have call predecessors, (77), 72 states have return successors, (86), 76 states have call predecessors, (86), 73 states have call successors, (86) [2023-04-01 12:08:58,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 377 transitions. [2023-04-01 12:08:58,523 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 377 transitions. Word has length 78 [2023-04-01 12:08:58,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:08:58,524 INFO L495 AbstractCegarLoop]: Abstraction has 329 states and 377 transitions. [2023-04-01 12:08:58,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 4 states have call successors, (21), 3 states have call predecessors, (21), 6 states have return successors, (15), 7 states have call predecessors, (15), 4 states have call successors, (15) [2023-04-01 12:08:58,525 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 377 transitions. [2023-04-01 12:08:58,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-04-01 12:08:58,532 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:08:58,533 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:08:58,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-01 12:08:58,533 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:08:58,533 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:08:58,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1258541528, now seen corresponding path program 1 times [2023-04-01 12:08:58,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:08:58,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367176585] [2023-04-01 12:08:58,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:08:58,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:08:58,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:08:58,674 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 12:08:58,674 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:08:58,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367176585] [2023-04-01 12:08:58,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367176585] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:08:58,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:08:58,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 12:08:58,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290412962] [2023-04-01 12:08:58,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:08:58,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 12:08:58,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:08:58,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 12:08:58,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-01 12:08:58,676 INFO L87 Difference]: Start difference. First operand 329 states and 377 transitions. Second operand has 7 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 4 states have call successors, (21), 4 states have call predecessors, (21), 4 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2023-04-01 12:08:58,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:08:58,943 INFO L93 Difference]: Finished difference Result 661 states and 783 transitions. [2023-04-01 12:08:58,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-01 12:08:58,943 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 4 states have call successors, (21), 4 states have call predecessors, (21), 4 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) Word has length 78 [2023-04-01 12:08:58,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:08:58,948 INFO L225 Difference]: With dead ends: 661 [2023-04-01 12:08:58,948 INFO L226 Difference]: Without dead ends: 357 [2023-04-01 12:08:58,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 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 12:08:58,950 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 118 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 12:08:58,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 234 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 12:08:58,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2023-04-01 12:08:58,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 326. [2023-04-01 12:08:58,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 176 states have (on average 1.1647727272727273) internal successors, (205), 191 states have internal predecessors, (205), 77 states have call successors, (77), 72 states have call predecessors, (77), 72 states have return successors, (86), 76 states have call predecessors, (86), 73 states have call successors, (86) [2023-04-01 12:08:58,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 368 transitions. [2023-04-01 12:08:58,991 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 368 transitions. Word has length 78 [2023-04-01 12:08:58,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:08:58,996 INFO L495 AbstractCegarLoop]: Abstraction has 326 states and 368 transitions. [2023-04-01 12:08:58,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 4 states have call successors, (21), 4 states have call predecessors, (21), 4 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2023-04-01 12:08:58,996 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 368 transitions. [2023-04-01 12:08:58,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-04-01 12:08:58,997 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:08:58,998 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:08:58,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-01 12:08:58,998 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:08:58,998 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:08:58,998 INFO L85 PathProgramCache]: Analyzing trace with hash 17939403, now seen corresponding path program 1 times [2023-04-01 12:08:58,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:08:58,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422556504] [2023-04-01 12:08:58,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:08:58,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:08:59,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:08:59,225 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 12:08:59,225 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:08:59,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422556504] [2023-04-01 12:08:59,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422556504] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:08:59,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:08:59,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 12:08:59,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986891446] [2023-04-01 12:08:59,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:08:59,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 12:08:59,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:08:59,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 12:08:59,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-01 12:08:59,226 INFO L87 Difference]: Start difference. First operand 326 states and 368 transitions. Second operand has 9 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 4 states have call successors, (22), 5 states have call predecessors, (22), 4 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) [2023-04-01 12:08:59,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:08:59,628 INFO L93 Difference]: Finished difference Result 999 states and 1158 transitions. [2023-04-01 12:08:59,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 12:08:59,629 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 4 states have call successors, (22), 5 states have call predecessors, (22), 4 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) Word has length 81 [2023-04-01 12:08:59,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:08:59,632 INFO L225 Difference]: With dead ends: 999 [2023-04-01 12:08:59,632 INFO L226 Difference]: Without dead ends: 759 [2023-04-01 12:08:59,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2023-04-01 12:08:59,633 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 256 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 556 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-01 12:08:59,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 490 Invalid, 648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 556 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-01 12:08:59,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 759 states. [2023-04-01 12:08:59,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 759 to 654. [2023-04-01 12:08:59,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 654 states, 358 states have (on average 1.1731843575418994) internal successors, (420), 387 states have internal predecessors, (420), 149 states have call successors, (149), 140 states have call predecessors, (149), 146 states have return successors, (177), 153 states have call predecessors, (177), 145 states have call successors, (177) [2023-04-01 12:08:59,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 746 transitions. [2023-04-01 12:08:59,698 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 746 transitions. Word has length 81 [2023-04-01 12:08:59,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:08:59,698 INFO L495 AbstractCegarLoop]: Abstraction has 654 states and 746 transitions. [2023-04-01 12:08:59,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 4 states have call successors, (22), 5 states have call predecessors, (22), 4 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) [2023-04-01 12:08:59,699 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 746 transitions. [2023-04-01 12:08:59,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-04-01 12:08:59,705 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:08:59,706 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:08:59,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-01 12:08:59,706 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:08:59,707 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:08:59,707 INFO L85 PathProgramCache]: Analyzing trace with hash 241034141, now seen corresponding path program 1 times [2023-04-01 12:08:59,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:08:59,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569333513] [2023-04-01 12:08:59,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:08:59,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:08:59,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:08:59,866 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 19 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-04-01 12:08:59,866 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:08:59,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569333513] [2023-04-01 12:08:59,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569333513] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 12:08:59,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882422570] [2023-04-01 12:08:59,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:08:59,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 12:08:59,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 12:08:59,869 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 12:08:59,871 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 12:08:59,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:08:59,993 INFO L262 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 8 conjunts are in the unsatisfiable core [2023-04-01 12:08:59,999 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 12:09:00,141 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 23 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:09:00,142 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 12:09:00,453 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 19 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-04-01 12:09:00,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882422570] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 12:09:00,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [493606277] [2023-04-01 12:09:00,493 INFO L159 IcfgInterpreter]: Started Sifa with 100 locations of interest [2023-04-01 12:09:00,494 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 12:09:00,498 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 12:09:00,501 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 12:09:00,502 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 12:09:00,981 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 31 for LOIs [2023-04-01 12:09:01,020 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 131 for LOIs [2023-04-01 12:09:02,787 INFO L197 IcfgInterpreter]: Interpreting procedure runTest with input of size 131 for LOIs [2023-04-01 12:09:03,085 INFO L197 IcfgInterpreter]: Interpreting procedure test with input of size 131 for LOIs [2023-04-01 12:09:06,452 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 166 for LOIs [2023-04-01 12:09:06,491 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 124 for LOIs [2023-04-01 12:09:07,579 INFO L197 IcfgInterpreter]: Interpreting procedure lowerWaterLevel with input of size 123 for LOIs [2023-04-01 12:09:07,596 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment with input of size 128 for LOIs [2023-04-01 12:09:08,515 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneAlarm with input of size 122 for LOIs [2023-04-01 12:09:08,673 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 122 for LOIs [2023-04-01 12:09:08,696 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 126 for LOIs [2023-04-01 12:09:09,392 INFO L197 IcfgInterpreter]: Interpreting procedure isHighWaterLevel with input of size 119 for LOIs [2023-04-01 12:09:09,623 INFO L197 IcfgInterpreter]: Interpreting procedure isHighWaterSensorDry with input of size 119 for LOIs [2023-04-01 12:09:09,644 INFO L197 IcfgInterpreter]: Interpreting procedure activatePump with input of size 131 for LOIs [2023-04-01 12:09:09,659 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 122 for LOIs [2023-04-01 12:09:09,671 INFO L197 IcfgInterpreter]: Interpreting procedure setup with input of size 121 for LOIs [2023-04-01 12:09:09,684 INFO L197 IcfgInterpreter]: Interpreting procedure select_features with input of size 121 for LOIs [2023-04-01 12:09:09,696 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification5_spec__3 with input of size 118 for LOIs [2023-04-01 12:09:10,049 INFO L197 IcfgInterpreter]: Interpreting procedure __automaton_fail with input of size 128 for LOIs [2023-04-01 12:09:10,062 INFO L197 IcfgInterpreter]: Interpreting procedure getWaterLevel with input of size 118 for LOIs [2023-04-01 12:09:10,075 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification5_spec__2 with input of size 118 for LOIs [2023-04-01 12:09:10,259 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 123 for LOIs [2023-04-01 12:09:10,306 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification5_spec__1 with input of size 123 for LOIs [2023-04-01 12:09:10,320 INFO L197 IcfgInterpreter]: Interpreting procedure valid_product with input of size 121 for LOIs [2023-04-01 12:09:10,341 INFO L197 IcfgInterpreter]: Interpreting procedure select_helpers with input of size 121 for LOIs [2023-04-01 12:09:10,353 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-01 12:09:27,658 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8142#(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 12:09:27,658 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-01 12:09:27,659 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 12:09:27,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 19 [2023-04-01 12:09:27,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799189016] [2023-04-01 12:09:27,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 12:09:27,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-04-01 12:09:27,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:09:27,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-04-01 12:09:27,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=509, Invalid=5497, Unknown=0, NotChecked=0, Total=6006 [2023-04-01 12:09:27,662 INFO L87 Difference]: Start difference. First operand 654 states and 746 transitions. Second operand has 19 states, 12 states have (on average 9.583333333333334) internal successors, (115), 15 states have internal predecessors, (115), 7 states have call successors, (52), 6 states have call predecessors, (52), 11 states have return successors, (51), 10 states have call predecessors, (51), 6 states have call successors, (51) [2023-04-01 12:09:28,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:09:28,644 INFO L93 Difference]: Finished difference Result 1351 states and 1587 transitions. [2023-04-01 12:09:28,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-04-01 12:09:28,644 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 12 states have (on average 9.583333333333334) internal successors, (115), 15 states have internal predecessors, (115), 7 states have call successors, (52), 6 states have call predecessors, (52), 11 states have return successors, (51), 10 states have call predecessors, (51), 6 states have call successors, (51) Word has length 133 [2023-04-01 12:09:28,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:09:28,650 INFO L225 Difference]: With dead ends: 1351 [2023-04-01 12:09:28,653 INFO L226 Difference]: Without dead ends: 780 [2023-04-01 12:09:28,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 326 SyntacticMatches, 12 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3878 ImplicationChecksByTransitivity, 17.7s TimeCoverageRelationStatistics Valid=673, Invalid=8257, Unknown=0, NotChecked=0, Total=8930 [2023-04-01 12:09:28,660 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 297 mSDsluCounter, 1636 mSDsCounter, 0 mSdLazyCounter, 1419 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 1858 SdHoareTripleChecker+Invalid, 1566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 1419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-01 12:09:28,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 1858 Invalid, 1566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 1419 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-01 12:09:28,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2023-04-01 12:09:28,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 641. [2023-04-01 12:09:28,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 641 states, 350 states have (on average 1.1714285714285715) internal successors, (410), 388 states have internal predecessors, (410), 148 states have call successors, (148), 141 states have call predecessors, (148), 142 states have return successors, (169), 142 states have call predecessors, (169), 144 states have call successors, (169) [2023-04-01 12:09:28,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 727 transitions. [2023-04-01 12:09:28,708 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 727 transitions. Word has length 133 [2023-04-01 12:09:28,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:09:28,709 INFO L495 AbstractCegarLoop]: Abstraction has 641 states and 727 transitions. [2023-04-01 12:09:28,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 12 states have (on average 9.583333333333334) internal successors, (115), 15 states have internal predecessors, (115), 7 states have call successors, (52), 6 states have call predecessors, (52), 11 states have return successors, (51), 10 states have call predecessors, (51), 6 states have call successors, (51) [2023-04-01 12:09:28,709 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 727 transitions. [2023-04-01 12:09:28,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-04-01 12:09:28,711 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:09:28,711 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, 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] [2023-04-01 12:09:28,722 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 12:09:28,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 12:09:28,917 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:09:28,918 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:09:28,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1422460300, now seen corresponding path program 1 times [2023-04-01 12:09:28,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:09:28,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418127536] [2023-04-01 12:09:28,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:09:28,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:09:28,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:09:29,219 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 39 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-04-01 12:09:29,219 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:09:29,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418127536] [2023-04-01 12:09:29,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418127536] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 12:09:29,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678527777] [2023-04-01 12:09:29,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:09:29,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 12:09:29,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 12:09:29,221 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 12:09:29,223 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 12:09:29,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:09:29,356 INFO L262 TraceCheckSpWp]: Trace formula consists of 646 conjuncts, 23 conjunts are in the unsatisfiable core [2023-04-01 12:09:29,367 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 12:09:29,471 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 84 proven. 2 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-04-01 12:09:29,472 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 12:09:29,760 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 40 proven. 3 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-04-01 12:09:29,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [678527777] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 12:09:29,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [517202705] [2023-04-01 12:09:29,765 INFO L159 IcfgInterpreter]: Started Sifa with 99 locations of interest [2023-04-01 12:09:29,766 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 12:09:29,766 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 12:09:29,767 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 12:09:29,767 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 12:09:29,918 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 31 for LOIs [2023-04-01 12:09:29,934 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 131 for LOIs [2023-04-01 12:09:30,743 INFO L197 IcfgInterpreter]: Interpreting procedure runTest with input of size 131 for LOIs [2023-04-01 12:09:30,945 INFO L197 IcfgInterpreter]: Interpreting procedure test with input of size 131 for LOIs [2023-04-01 12:09:35,255 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 226 for LOIs [2023-04-01 12:09:35,415 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 162 for LOIs [2023-04-01 12:09:37,066 INFO L197 IcfgInterpreter]: Interpreting procedure lowerWaterLevel with input of size 161 for LOIs [2023-04-01 12:09:37,091 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment with input of size 166 for LOIs [2023-04-01 12:09:37,791 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneAlarm with input of size 160 for LOIs [2023-04-01 12:09:38,027 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 160 for LOIs [2023-04-01 12:09:38,057 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 121 for LOIs [2023-04-01 12:09:38,417 INFO L197 IcfgInterpreter]: Interpreting procedure isHighWaterLevel with input of size 119 for LOIs [2023-04-01 12:09:38,635 INFO L197 IcfgInterpreter]: Interpreting procedure isHighWaterSensorDry with input of size 119 for LOIs [2023-04-01 12:09:38,659 INFO L197 IcfgInterpreter]: Interpreting procedure activatePump with input of size 131 for LOIs [2023-04-01 12:09:38,675 INFO L197 IcfgInterpreter]: Interpreting procedure setup with input of size 121 for LOIs [2023-04-01 12:09:38,688 INFO L197 IcfgInterpreter]: Interpreting procedure select_features with input of size 121 for LOIs [2023-04-01 12:09:38,700 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification5_spec__3 with input of size 196 for LOIs [2023-04-01 12:09:39,526 INFO L197 IcfgInterpreter]: Interpreting procedure __automaton_fail with input of size 122 for LOIs [2023-04-01 12:09:39,539 INFO L197 IcfgInterpreter]: Interpreting procedure getWaterLevel with input of size 196 for LOIs [2023-04-01 12:09:39,566 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification5_spec__2 with input of size 157 for LOIs [2023-04-01 12:09:39,802 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 154 for LOIs [2023-04-01 12:09:39,825 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification5_spec__1 with input of size 123 for LOIs [2023-04-01 12:09:39,839 INFO L197 IcfgInterpreter]: Interpreting procedure valid_product with input of size 121 for LOIs [2023-04-01 12:09:39,855 INFO L197 IcfgInterpreter]: Interpreting procedure select_helpers with input of size 121 for LOIs [2023-04-01 12:09:39,867 INFO L180 IcfgInterpreter]: Interpretation finished