/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain EqDomain -i ../sv-benchmarks/c/product-lines/minepump_spec4_product26.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 12:05:05,261 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 12:05:05,262 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 12:05:05,292 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 12:05:05,292 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 12:05:05,294 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 12:05:05,296 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 12:05:05,298 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 12:05:05,299 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 12:05:05,302 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 12:05:05,303 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 12:05:05,304 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 12:05:05,304 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 12:05:05,306 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 12:05:05,307 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 12:05:05,308 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 12:05:05,308 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 12:05:05,309 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 12:05:05,310 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 12:05:05,314 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 12:05:05,314 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 12:05:05,315 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 12:05:05,316 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 12:05:05,317 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 12:05:05,322 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 12:05:05,322 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 12:05:05,323 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 12:05:05,324 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 12:05:05,324 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 12:05:05,324 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 12:05:05,324 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 12:05:05,325 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 12:05:05,326 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 12:05:05,326 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 12:05:05,327 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 12:05:05,327 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 12:05:05,327 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 12:05:05,327 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 12:05:05,327 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 12:05:05,328 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 12:05:05,328 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 12:05:05,329 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 12:05:05,351 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 12:05:05,351 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 12:05:05,351 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 12:05:05,351 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 12:05:05,352 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 12:05:05,352 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 12:05:05,352 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 12:05:05,352 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 12:05:05,352 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 12:05:05,352 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 12:05:05,353 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 12:05:05,353 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 12:05:05,353 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 12:05:05,353 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 12:05:05,353 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 12:05:05,353 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 12:05:05,353 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 12:05:05,354 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 12:05:05,354 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 12:05:05,354 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 12:05:05,354 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 12:05:05,354 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 12:05:05,354 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 12:05:05,354 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 12:05:05,354 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 12:05:05,354 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 12:05:05,355 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 12:05:05,355 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 12:05:05,355 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 12:05:05,355 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 12:05:05,355 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 12:05:05,355 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 12:05:05,355 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 12:05:05,355 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 12:05:05,356 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 12:05:05,356 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 12:05:05,356 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 12:05:05,356 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 12:05:05,356 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 12:05:05,356 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 12:05:05,356 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 12:05:05,356 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> EqDomain [2023-04-01 12:05:05,527 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 12:05:05,546 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 12:05:05,548 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 12:05:05,549 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 12:05:05,549 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 12:05:05,550 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec4_product26.cil.c [2023-04-01 12:05:06,529 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 12:05:06,722 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 12:05:06,723 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec4_product26.cil.c [2023-04-01 12:05:06,732 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d2bf1f51/960e75d23f3a4669a99b89a94b485b29/FLAGe677f9eab [2023-04-01 12:05:06,741 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d2bf1f51/960e75d23f3a4669a99b89a94b485b29 [2023-04-01 12:05:06,743 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 12:05:06,744 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 12:05:06,745 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 12:05:06,745 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 12:05:06,762 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 12:05:06,762 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:05:06" (1/1) ... [2023-04-01 12:05:06,763 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8d487e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:05:06, skipping insertion in model container [2023-04-01 12:05:06,764 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:05:06" (1/1) ... [2023-04-01 12:05:06,769 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 12:05:06,803 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 12:05:06,895 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec4_product26.cil.c[1605,1618] [2023-04-01 12:05:07,003 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 12:05:07,017 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 12:05:07,042 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec4_product26.cil.c[1605,1618] [2023-04-01 12:05:07,085 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 12:05:07,096 INFO L208 MainTranslator]: Completed translation [2023-04-01 12:05:07,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:05:07 WrapperNode [2023-04-01 12:05:07,097 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 12:05:07,098 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 12:05:07,098 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 12:05:07,098 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 12:05:07,106 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:05:07" (1/1) ... [2023-04-01 12:05:07,106 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:05:07" (1/1) ... [2023-04-01 12:05:07,124 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:05:07" (1/1) ... [2023-04-01 12:05:07,124 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:05:07" (1/1) ... [2023-04-01 12:05:07,138 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:05:07" (1/1) ... [2023-04-01 12:05:07,142 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:05:07" (1/1) ... [2023-04-01 12:05:07,145 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:05:07" (1/1) ... [2023-04-01 12:05:07,146 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:05:07" (1/1) ... [2023-04-01 12:05:07,149 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 12:05:07,150 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 12:05:07,150 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 12:05:07,150 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 12:05:07,151 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:05:07" (1/1) ... [2023-04-01 12:05:07,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 12:05:07,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 12:05:07,173 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 12:05:07,181 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 12:05:07,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 12:05:07,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 12:05:07,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2023-04-01 12:05:07,209 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 12:05:07,209 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-04-01 12:05:07,209 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2023-04-01 12:05:07,209 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-04-01 12:05:07,209 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2023-04-01 12:05:07,209 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2023-04-01 12:05:07,209 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2023-04-01 12:05:07,209 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2023-04-01 12:05:07,210 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2023-04-01 12:05:07,210 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2023-04-01 12:05:07,210 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2023-04-01 12:05:07,210 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2023-04-01 12:05:07,210 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2023-04-01 12:05:07,210 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2023-04-01 12:05:07,210 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2023-04-01 12:05:07,210 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2023-04-01 12:05:07,210 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2023-04-01 12:05:07,210 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2023-04-01 12:05:07,210 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2023-04-01 12:05:07,210 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2023-04-01 12:05:07,210 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2023-04-01 12:05:07,211 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2023-04-01 12:05:07,211 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2023-04-01 12:05:07,211 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2023-04-01 12:05:07,211 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2023-04-01 12:05:07,211 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2023-04-01 12:05:07,211 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2023-04-01 12:05:07,211 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2023-04-01 12:05:07,211 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2023-04-01 12:05:07,211 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2023-04-01 12:05:07,211 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2023-04-01 12:05:07,211 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2023-04-01 12:05:07,211 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-04-01 12:05:07,211 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2023-04-01 12:05:07,212 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2023-04-01 12:05:07,212 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2023-04-01 12:05:07,212 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 12:05:07,212 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 12:05:07,212 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 12:05:07,212 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 12:05:07,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 12:05:07,212 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 12:05:07,212 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2023-04-01 12:05:07,212 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-04-01 12:05:07,212 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2023-04-01 12:05:07,212 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2023-04-01 12:05:07,212 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2023-04-01 12:05:07,212 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-04-01 12:05:07,213 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-04-01 12:05:07,213 INFO L130 BoogieDeclarations]: Found specification of procedure test [2023-04-01 12:05:07,213 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2023-04-01 12:05:07,213 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2023-04-01 12:05:07,213 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2023-04-01 12:05:07,213 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2023-04-01 12:05:07,213 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2023-04-01 12:05:07,213 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2023-04-01 12:05:07,213 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2023-04-01 12:05:07,213 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2023-04-01 12:05:07,213 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2023-04-01 12:05:07,213 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2023-04-01 12:05:07,213 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2023-04-01 12:05:07,213 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2023-04-01 12:05:07,214 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2023-04-01 12:05:07,214 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2023-04-01 12:05:07,214 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2023-04-01 12:05:07,214 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2023-04-01 12:05:07,214 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2023-04-01 12:05:07,214 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2023-04-01 12:05:07,214 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2023-04-01 12:05:07,214 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-01 12:05:07,214 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-01 12:05:07,214 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2023-04-01 12:05:07,214 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-01 12:05:07,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-01 12:05:07,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 12:05:07,214 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-01 12:05:07,214 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2023-04-01 12:05:07,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 12:05:07,215 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2023-04-01 12:05:07,215 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2023-04-01 12:05:07,215 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 12:05:07,215 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2023-04-01 12:05:07,215 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2023-04-01 12:05:07,215 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2023-04-01 12:05:07,215 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2023-04-01 12:05:07,215 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2023-04-01 12:05:07,215 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2023-04-01 12:05:07,215 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 12:05:07,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 12:05:07,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 12:05:07,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 12:05:07,375 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 12:05:07,377 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 12:05:07,731 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 12:05:07,871 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 12:05:07,872 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-04-01 12:05:07,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:05:07 BoogieIcfgContainer [2023-04-01 12:05:07,878 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 12:05:07,881 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 12:05:07,881 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 12:05:07,884 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 12:05:07,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 12:05:06" (1/3) ... [2023-04-01 12:05:07,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7699e99c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:05:07, skipping insertion in model container [2023-04-01 12:05:07,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:05:07" (2/3) ... [2023-04-01 12:05:07,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7699e99c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:05:07, skipping insertion in model container [2023-04-01 12:05:07,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:05:07" (3/3) ... [2023-04-01 12:05:07,889 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product26.cil.c [2023-04-01 12:05:07,903 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 12:05:07,903 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 12:05:07,950 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 12:05:07,956 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;@5419a7e5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 12:05:07,956 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 12:05:07,960 INFO L276 IsEmpty]: Start isEmpty. Operand has 125 states, 56 states have (on average 1.2678571428571428) internal successors, (71), 67 states have internal predecessors, (71), 41 states have call successors, (41), 25 states have call predecessors, (41), 25 states have return successors, (41), 39 states have call predecessors, (41), 41 states have call successors, (41) [2023-04-01 12:05:07,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-04-01 12:05:07,968 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:05:07,969 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:05:07,970 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:05:07,976 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:05:07,976 INFO L85 PathProgramCache]: Analyzing trace with hash 53057376, now seen corresponding path program 1 times [2023-04-01 12:05:07,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:05:07,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732393686] [2023-04-01 12:05:07,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:05:07,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:05:08,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:05:08,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:05:08,185 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:05:08,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732393686] [2023-04-01 12:05:08,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732393686] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:05:08,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:05:08,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-04-01 12:05:08,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419489634] [2023-04-01 12:05:08,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:05:08,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-04-01 12:05:08,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:05:08,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-04-01 12:05:08,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-01 12:05:08,231 INFO L87 Difference]: Start difference. First operand has 125 states, 56 states have (on average 1.2678571428571428) internal successors, (71), 67 states have internal predecessors, (71), 41 states have call successors, (41), 25 states have call predecessors, (41), 25 states have return successors, (41), 39 states have call predecessors, (41), 41 states have call successors, (41) Second operand has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-04-01 12:05:08,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:05:08,290 INFO L93 Difference]: Finished difference Result 183 states and 220 transitions. [2023-04-01 12:05:08,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-04-01 12:05:08,292 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 42 [2023-04-01 12:05:08,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:05:08,298 INFO L225 Difference]: With dead ends: 183 [2023-04-01 12:05:08,299 INFO L226 Difference]: Without dead ends: 92 [2023-04-01 12:05:08,302 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 12:05:08,305 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 12:05:08,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 100 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 12:05:08,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2023-04-01 12:05:08,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2023-04-01 12:05:08,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 47 states have (on average 1.2127659574468086) internal successors, (57), 55 states have internal predecessors, (57), 26 states have call successors, (26), 23 states have call predecessors, (26), 18 states have return successors, (21), 19 states have call predecessors, (21), 21 states have call successors, (21) [2023-04-01 12:05:08,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 104 transitions. [2023-04-01 12:05:08,337 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 104 transitions. Word has length 42 [2023-04-01 12:05:08,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:05:08,338 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 104 transitions. [2023-04-01 12:05:08,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-04-01 12:05:08,338 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 104 transitions. [2023-04-01 12:05:08,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-04-01 12:05:08,340 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:05:08,340 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:05:08,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 12:05:08,340 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:05:08,341 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:05:08,341 INFO L85 PathProgramCache]: Analyzing trace with hash -53721960, now seen corresponding path program 1 times [2023-04-01 12:05:08,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:05:08,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198788404] [2023-04-01 12:05:08,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:05:08,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:05:08,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:05:08,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:05:08,435 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:05:08,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198788404] [2023-04-01 12:05:08,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198788404] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:05:08,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:05:08,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 12:05:08,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027719836] [2023-04-01 12:05:08,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:05:08,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 12:05:08,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:05:08,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 12:05:08,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 12:05:08,439 INFO L87 Difference]: Start difference. First operand 92 states and 104 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-04-01 12:05:08,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:05:08,488 INFO L93 Difference]: Finished difference Result 137 states and 154 transitions. [2023-04-01 12:05:08,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 12:05:08,489 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 43 [2023-04-01 12:05:08,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:05:08,492 INFO L225 Difference]: With dead ends: 137 [2023-04-01 12:05:08,492 INFO L226 Difference]: Without dead ends: 84 [2023-04-01 12:05:08,494 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 12:05:08,495 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 9 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 12:05:08,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 147 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 12:05:08,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2023-04-01 12:05:08,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2023-04-01 12:05:08,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 42 states have (on average 1.2142857142857142) internal successors, (51), 50 states have internal predecessors, (51), 23 states have call successors, (23), 22 states have call predecessors, (23), 18 states have return successors, (19), 17 states have call predecessors, (19), 19 states have call successors, (19) [2023-04-01 12:05:08,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 93 transitions. [2023-04-01 12:05:08,503 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 93 transitions. Word has length 43 [2023-04-01 12:05:08,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:05:08,503 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 93 transitions. [2023-04-01 12:05:08,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-04-01 12:05:08,503 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 93 transitions. [2023-04-01 12:05:08,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-04-01 12:05:08,506 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:05:08,507 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:05:08,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 12:05:08,507 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:05:08,507 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:05:08,508 INFO L85 PathProgramCache]: Analyzing trace with hash -105623969, now seen corresponding path program 1 times [2023-04-01 12:05:08,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:05:08,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032947814] [2023-04-01 12:05:08,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:05:08,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:05:08,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:05:08,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:05:08,701 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:05:08,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032947814] [2023-04-01 12:05:08,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032947814] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:05:08,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:05:08,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 12:05:08,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439778556] [2023-04-01 12:05:08,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:05:08,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 12:05:08,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:05:08,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 12:05:08,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-04-01 12:05:08,705 INFO L87 Difference]: Start difference. First operand 84 states and 93 transitions. Second operand has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 4 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-04-01 12:05:08,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:05:08,868 INFO L93 Difference]: Finished difference Result 146 states and 165 transitions. [2023-04-01 12:05:08,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-01 12:05:08,869 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 4 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 46 [2023-04-01 12:05:08,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:05:08,871 INFO L225 Difference]: With dead ends: 146 [2023-04-01 12:05:08,871 INFO L226 Difference]: Without dead ends: 84 [2023-04-01 12:05:08,873 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 12:05:08,876 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 119 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 12:05:08,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 219 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 12:05:08,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2023-04-01 12:05:08,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2023-04-01 12:05:08,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 42 states have (on average 1.1904761904761905) internal successors, (50), 49 states have internal predecessors, (50), 23 states have call successors, (23), 22 states have call predecessors, (23), 18 states have return successors, (19), 17 states have call predecessors, (19), 19 states have call successors, (19) [2023-04-01 12:05:08,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 92 transitions. [2023-04-01 12:05:08,896 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 92 transitions. Word has length 46 [2023-04-01 12:05:08,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:05:08,896 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 92 transitions. [2023-04-01 12:05:08,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 4 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-04-01 12:05:08,897 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 92 transitions. [2023-04-01 12:05:08,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-04-01 12:05:08,898 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:05:08,898 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:05:08,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 12:05:08,898 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:05:08,898 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:05:08,898 INFO L85 PathProgramCache]: Analyzing trace with hash -339600676, now seen corresponding path program 1 times [2023-04-01 12:05:08,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:05:08,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062965606] [2023-04-01 12:05:08,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:05:08,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:05:08,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:05:09,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:05:09,112 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:05:09,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062965606] [2023-04-01 12:05:09,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062965606] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:05:09,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:05:09,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-01 12:05:09,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180138807] [2023-04-01 12:05:09,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:05:09,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-01 12:05:09,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:05:09,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-01 12:05:09,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-04-01 12:05:09,114 INFO L87 Difference]: Start difference. First operand 84 states and 92 transitions. Second operand has 10 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 4 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) [2023-04-01 12:05:09,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:05:09,340 INFO L93 Difference]: Finished difference Result 253 states and 294 transitions. [2023-04-01 12:05:09,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 12:05:09,341 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 4 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) Word has length 54 [2023-04-01 12:05:09,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:05:09,343 INFO L225 Difference]: With dead ends: 253 [2023-04-01 12:05:09,343 INFO L226 Difference]: Without dead ends: 191 [2023-04-01 12:05:09,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2023-04-01 12:05:09,344 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 116 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 12:05:09,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 499 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 12:05:09,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2023-04-01 12:05:09,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 183. [2023-04-01 12:05:09,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 97 states have (on average 1.2061855670103092) internal successors, (117), 113 states have internal predecessors, (117), 46 states have call successors, (46), 43 states have call predecessors, (46), 39 states have return successors, (44), 36 states have call predecessors, (44), 42 states have call successors, (44) [2023-04-01 12:05:09,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 207 transitions. [2023-04-01 12:05:09,365 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 207 transitions. Word has length 54 [2023-04-01 12:05:09,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:05:09,365 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 207 transitions. [2023-04-01 12:05:09,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 4 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) [2023-04-01 12:05:09,366 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 207 transitions. [2023-04-01 12:05:09,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-04-01 12:05:09,370 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:05:09,371 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:05:09,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 12:05:09,371 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:05:09,371 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:05:09,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1940545334, now seen corresponding path program 1 times [2023-04-01 12:05:09,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:05:09,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457342780] [2023-04-01 12:05:09,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:05:09,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:05:09,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:05:09,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:05:09,430 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:05:09,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457342780] [2023-04-01 12:05:09,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457342780] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:05:09,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:05:09,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 12:05:09,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360028203] [2023-04-01 12:05:09,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:05:09,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 12:05:09,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:05:09,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 12:05:09,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 12:05:09,432 INFO L87 Difference]: Start difference. First operand 183 states and 207 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-04-01 12:05:09,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:05:09,450 INFO L93 Difference]: Finished difference Result 302 states and 350 transitions. [2023-04-01 12:05:09,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 12:05:09,450 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 60 [2023-04-01 12:05:09,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:05:09,451 INFO L225 Difference]: With dead ends: 302 [2023-04-01 12:05:09,451 INFO L226 Difference]: Without dead ends: 141 [2023-04-01 12:05:09,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 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 12:05:09,453 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 49 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 12:05:09,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 62 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 12:05:09,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2023-04-01 12:05:09,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2023-04-01 12:05:09,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 78 states have (on average 1.141025641025641) internal successors, (89), 87 states have internal predecessors, (89), 33 states have call successors, (33), 33 states have call predecessors, (33), 29 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2023-04-01 12:05:09,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 151 transitions. [2023-04-01 12:05:09,463 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 151 transitions. Word has length 60 [2023-04-01 12:05:09,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:05:09,463 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 151 transitions. [2023-04-01 12:05:09,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-04-01 12:05:09,464 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 151 transitions. [2023-04-01 12:05:09,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-04-01 12:05:09,484 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:05:09,485 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:05:09,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-01 12:05:09,485 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:05:09,485 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:05:09,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1656430428, now seen corresponding path program 1 times [2023-04-01 12:05:09,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:05:09,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986666218] [2023-04-01 12:05:09,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:05:09,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:05:09,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:05:09,710 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-04-01 12:05:09,710 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:05:09,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986666218] [2023-04-01 12:05:09,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986666218] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 12:05:09,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816947698] [2023-04-01 12:05:09,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:05:09,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 12:05:09,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 12:05:09,714 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 12:05:09,720 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 12:05:09,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:05:09,858 INFO L262 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 51 conjunts are in the unsatisfiable core [2023-04-01 12:05:09,866 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 12:05:10,201 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-04-01 12:05:10,201 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 12:05:10,601 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-04-01 12:05:10,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [816947698] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 12:05:10,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1749261379] [2023-04-01 12:05:10,656 INFO L159 IcfgInterpreter]: Started Sifa with 62 locations of interest [2023-04-01 12:05:10,657 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 12:05:10,660 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 12:05:10,663 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 12:05:10,664 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 12:05:11,092 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 28 for LOIs [2023-04-01 12:05:11,129 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 127 for LOIs [2023-04-01 12:05:12,393 INFO L197 IcfgInterpreter]: Interpreting procedure runTest with input of size 127 for LOIs [2023-04-01 12:05:12,427 INFO L197 IcfgInterpreter]: Interpreting procedure setup with input of size 119 for LOIs [2023-04-01 12:05:12,440 INFO L197 IcfgInterpreter]: Interpreting procedure select_features with input of size 119 for LOIs [2023-04-01 12:05:12,453 INFO L197 IcfgInterpreter]: Interpreting procedure test with input of size 127 for LOIs [2023-04-01 12:05:13,819 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 132 for LOIs [2023-04-01 12:05:13,856 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 122 for LOIs [2023-04-01 12:05:14,274 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification4_spec__1 with input of size 117 for LOIs [2023-04-01 12:05:14,632 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 119 for LOIs [2023-04-01 12:05:14,649 INFO L197 IcfgInterpreter]: Interpreting procedure getWaterLevel with input of size 117 for LOIs [2023-04-01 12:05:14,663 INFO L197 IcfgInterpreter]: Interpreting procedure valid_product with input of size 119 for LOIs [2023-04-01 12:05:14,680 INFO L197 IcfgInterpreter]: Interpreting procedure select_helpers with input of size 119 for LOIs [2023-04-01 12:05:14,693 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment with input of size 119 for LOIs [2023-04-01 12:05:14,843 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 117 for LOIs [2023-04-01 12:05:14,854 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-01 12:05:22,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1749261379] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:05:22,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-04-01 12:05:22,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [7, 14, 12] total 58 [2023-04-01 12:05:22,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348773923] [2023-04-01 12:05:22,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:05:22,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-04-01 12:05:22,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:05:22,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-04-01 12:05:22,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=405, Invalid=2901, Unknown=0, NotChecked=0, Total=3306 [2023-04-01 12:05:22,075 INFO L87 Difference]: Start difference. First operand 141 states and 151 transitions. Second operand has 32 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 24 states have internal predecessors, (34), 11 states have call successors, (16), 9 states have call predecessors, (16), 10 states have return successors, (12), 11 states have call predecessors, (12), 9 states have call successors, (12) [2023-04-01 12:05:29,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:05:29,282 INFO L93 Difference]: Finished difference Result 321 states and 364 transitions. [2023-04-01 12:05:29,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-04-01 12:05:29,282 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 24 states have internal predecessors, (34), 11 states have call successors, (16), 9 states have call predecessors, (16), 10 states have return successors, (12), 11 states have call predecessors, (12), 9 states have call successors, (12) Word has length 89 [2023-04-01 12:05:29,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:05:29,284 INFO L225 Difference]: With dead ends: 321 [2023-04-01 12:05:29,284 INFO L226 Difference]: Without dead ends: 275 [2023-04-01 12:05:29,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1606 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=927, Invalid=5235, Unknown=0, NotChecked=0, Total=6162 [2023-04-01 12:05:29,287 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 285 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 1603 mSolverCounterSat, 219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 1822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 1603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-04-01 12:05:29,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 86 Invalid, 1822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [219 Valid, 1603 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-04-01 12:05:29,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2023-04-01 12:05:29,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 243. [2023-04-01 12:05:29,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 140 states have (on average 1.1428571428571428) internal successors, (160), 154 states have internal predecessors, (160), 53 states have call successors, (53), 53 states have call predecessors, (53), 49 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2023-04-01 12:05:29,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 262 transitions. [2023-04-01 12:05:29,328 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 262 transitions. Word has length 89 [2023-04-01 12:05:29,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:05:29,329 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 262 transitions. [2023-04-01 12:05:29,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 24 states have internal predecessors, (34), 11 states have call successors, (16), 9 states have call predecessors, (16), 10 states have return successors, (12), 11 states have call predecessors, (12), 9 states have call successors, (12) [2023-04-01 12:05:29,329 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 262 transitions. [2023-04-01 12:05:29,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-04-01 12:05:29,330 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:05:29,330 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 12:05:29,337 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-01 12:05:29,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-04-01 12:05:29,538 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:05:29,538 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:05:29,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1988903776, now seen corresponding path program 1 times [2023-04-01 12:05:29,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:05:29,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640259119] [2023-04-01 12:05:29,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:05:29,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:05:29,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:05:29,727 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-04-01 12:05:29,728 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:05:29,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640259119] [2023-04-01 12:05:29,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640259119] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 12:05:29,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932782112] [2023-04-01 12:05:29,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:05:29,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 12:05:29,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 12:05:29,729 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 12:05:29,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-01 12:05:29,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:05:29,834 INFO L262 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 51 conjunts are in the unsatisfiable core [2023-04-01 12:05:29,843 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 12:05:30,029 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-04-01 12:05:30,029 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 12:05:30,433 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-04-01 12:05:30,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932782112] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 12:05:30,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [21355117] [2023-04-01 12:05:30,435 INFO L159 IcfgInterpreter]: Started Sifa with 65 locations of interest [2023-04-01 12:05:30,435 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 12:05:30,435 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 12:05:30,435 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 12:05:30,435 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 12:05:30,570 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 28 for LOIs [2023-04-01 12:05:30,587 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 127 for LOIs [2023-04-01 12:05:31,335 INFO L197 IcfgInterpreter]: Interpreting procedure runTest with input of size 127 for LOIs [2023-04-01 12:05:31,374 INFO L197 IcfgInterpreter]: Interpreting procedure setup with input of size 119 for LOIs [2023-04-01 12:05:31,385 INFO L197 IcfgInterpreter]: Interpreting procedure select_features with input of size 119 for LOIs [2023-04-01 12:05:31,398 INFO L197 IcfgInterpreter]: Interpreting procedure test with input of size 127 for LOIs [2023-04-01 12:05:35,119 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 186 for LOIs [2023-04-01 12:05:35,224 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 159 for LOIs [2023-04-01 12:05:35,730 INFO L197 IcfgInterpreter]: Interpreting procedure __utac_acc__Specification4_spec__1 with input of size 154 for LOIs [2023-04-01 12:05:36,231 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 156 for LOIs [2023-04-01 12:05:36,259 INFO L197 IcfgInterpreter]: Interpreting procedure getWaterLevel with input of size 154 for LOIs [2023-04-01 12:05:36,277 INFO L197 IcfgInterpreter]: Interpreting procedure changeMethaneLevel with input of size 166 for LOIs [2023-04-01 12:05:36,303 INFO L197 IcfgInterpreter]: Interpreting procedure valid_product with input of size 119 for LOIs [2023-04-01 12:05:36,319 INFO L197 IcfgInterpreter]: Interpreting procedure select_helpers with input of size 119 for LOIs [2023-04-01 12:05:36,331 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment with input of size 156 for LOIs [2023-04-01 12:05:36,535 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 154 for LOIs [2023-04-01 12:05:36,554 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-01 12:05:47,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [21355117] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:05:47,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-04-01 12:05:47,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [7, 14, 12] total 60 [2023-04-01 12:05:47,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497439806] [2023-04-01 12:05:47,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:05:47,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-04-01 12:05:47,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:05:47,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-04-01 12:05:47,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=412, Invalid=3128, Unknown=0, NotChecked=0, Total=3540 [2023-04-01 12:05:47,503 INFO L87 Difference]: Start difference. First operand 243 states and 262 transitions. Second operand has 34 states, 23 states have (on average 1.565217391304348) internal successors, (36), 26 states have internal predecessors, (36), 12 states have call successors, (17), 10 states have call predecessors, (17), 11 states have return successors, (13), 11 states have call predecessors, (13), 10 states have call successors, (13) [2023-04-01 12:06:06,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:06:06,802 INFO L93 Difference]: Finished difference Result 448 states and 551 transitions. [2023-04-01 12:06:06,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-04-01 12:06:06,803 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 23 states have (on average 1.565217391304348) internal successors, (36), 26 states have internal predecessors, (36), 12 states have call successors, (17), 10 states have call predecessors, (17), 11 states have return successors, (13), 11 states have call predecessors, (13), 10 states have call successors, (13) Word has length 92 [2023-04-01 12:06:06,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:06:06,803 INFO L225 Difference]: With dead ends: 448 [2023-04-01 12:06:06,803 INFO L226 Difference]: Without dead ends: 0 [2023-04-01 12:06:06,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2964 ImplicationChecksByTransitivity, 27.4s TimeCoverageRelationStatistics Valid=1593, Invalid=9327, Unknown=0, NotChecked=0, Total=10920 [2023-04-01 12:06:06,806 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 515 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 2212 mSolverCounterSat, 445 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 515 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 2657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 445 IncrementalHoareTripleChecker+Valid, 2212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-04-01 12:06:06,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [515 Valid, 287 Invalid, 2657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [445 Valid, 2212 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-04-01 12:06:06,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-04-01 12:06:06,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-04-01 12:06:06,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-04-01 12:06:06,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-04-01 12:06:06,807 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 92 [2023-04-01 12:06:06,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:06:06,808 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-04-01 12:06:06,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 23 states have (on average 1.565217391304348) internal successors, (36), 26 states have internal predecessors, (36), 12 states have call successors, (17), 10 states have call predecessors, (17), 11 states have return successors, (13), 11 states have call predecessors, (13), 10 states have call successors, (13) [2023-04-01 12:06:06,808 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-04-01 12:06:06,808 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-04-01 12:06:06,810 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-01 12:06:06,821 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-04-01 12:06:07,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-04-01 12:06:07,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.