/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 OctagonDomain -i ../sv-benchmarks/c/product-lines/minepump_spec3_product51.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-03 01:02:41,284 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-03 01:02:41,286 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-03 01:02:41,329 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-03 01:02:41,330 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-03 01:02:41,333 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-03 01:02:41,336 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-03 01:02:41,339 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-03 01:02:41,341 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-03 01:02:41,347 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-03 01:02:41,349 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-03 01:02:41,351 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-03 01:02:41,351 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-03 01:02:41,357 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-03 01:02:41,358 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-03 01:02:41,360 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-03 01:02:41,360 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-03 01:02:41,361 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-03 01:02:41,364 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-03 01:02:41,370 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-03 01:02:41,371 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-03 01:02:41,373 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-03 01:02:41,374 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-03 01:02:41,375 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-03 01:02:41,380 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-03 01:02:41,380 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-03 01:02:41,380 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-03 01:02:41,382 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-03 01:02:41,383 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-03 01:02:41,383 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-03 01:02:41,383 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-03 01:02:41,384 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-03 01:02:41,386 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-03 01:02:41,386 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-03 01:02:41,387 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-03 01:02:41,387 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-03 01:02:41,388 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-03 01:02:41,388 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-03 01:02:41,388 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-03 01:02:41,389 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-03 01:02:41,390 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-03 01:02:41,391 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 [2023-04-03 01:02:41,421 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-03 01:02:41,421 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-03 01:02:41,422 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-03 01:02:41,422 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-03 01:02:41,423 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-03 01:02:41,423 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-03 01:02:41,423 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-03 01:02:41,423 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-03 01:02:41,423 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-03 01:02:41,423 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-03 01:02:41,424 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-03 01:02:41,424 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-03 01:02:41,424 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-03 01:02:41,425 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-03 01:02:41,425 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-03 01:02:41,425 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-03 01:02:41,425 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-03 01:02:41,425 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-03 01:02:41,426 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-03 01:02:41,426 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-03 01:02:41,426 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-03 01:02:41,426 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-03 01:02:41,426 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-03 01:02:41,426 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-03 01:02:41,426 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-03 01:02:41,427 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-03 01:02:41,427 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-03 01:02:41,427 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-03 01:02:41,427 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-03 01:02:41,427 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-03 01:02:41,427 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-03 01:02:41,428 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-03 01:02:41,428 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 01:02:41,428 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-03 01:02:41,428 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-03 01:02:41,428 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-03 01:02:41,428 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-03 01:02:41,429 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-03 01:02:41,429 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-03 01:02:41,429 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-03 01:02:41,429 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-03 01:02:41,429 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-03 01:02:41,663 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-03 01:02:41,693 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-03 01:02:41,695 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-03 01:02:41,697 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-03 01:02:41,698 INFO L275 PluginConnector]: CDTParser initialized [2023-04-03 01:02:41,699 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec3_product51.cil.c [2023-04-03 01:02:42,928 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-03 01:02:43,144 INFO L351 CDTParser]: Found 1 translation units. [2023-04-03 01:02:43,145 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product51.cil.c [2023-04-03 01:02:43,158 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8223ab9ae/7baf0acfe17a4db8baa475ed570c14f7/FLAGd54a7280e [2023-04-03 01:02:43,177 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8223ab9ae/7baf0acfe17a4db8baa475ed570c14f7 [2023-04-03 01:02:43,181 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-03 01:02:43,182 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-03 01:02:43,183 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-03 01:02:43,183 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-03 01:02:43,187 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-03 01:02:43,187 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 01:02:43" (1/1) ... [2023-04-03 01:02:43,189 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10cf684a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:02:43, skipping insertion in model container [2023-04-03 01:02:43,189 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 01:02:43" (1/1) ... [2023-04-03 01:02:43,196 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-03 01:02:43,242 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-03 01:02:43,477 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_spec3_product51.cil.c[18789,18802] [2023-04-03 01:02:43,481 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 01:02:43,493 INFO L203 MainTranslator]: Completed pre-run [2023-04-03 01:02:43,547 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_spec3_product51.cil.c[18789,18802] [2023-04-03 01:02:43,548 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 01:02:43,564 INFO L208 MainTranslator]: Completed translation [2023-04-03 01:02:43,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:02:43 WrapperNode [2023-04-03 01:02:43,565 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-03 01:02:43,566 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-03 01:02:43,566 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-03 01:02:43,566 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-03 01:02:43,577 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:02:43" (1/1) ... [2023-04-03 01:02:43,577 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:02:43" (1/1) ... [2023-04-03 01:02:43,594 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:02:43" (1/1) ... [2023-04-03 01:02:43,594 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:02:43" (1/1) ... [2023-04-03 01:02:43,611 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:02:43" (1/1) ... [2023-04-03 01:02:43,615 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:02:43" (1/1) ... [2023-04-03 01:02:43,618 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:02:43" (1/1) ... [2023-04-03 01:02:43,620 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:02:43" (1/1) ... [2023-04-03 01:02:43,625 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-03 01:02:43,626 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-03 01:02:43,626 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-03 01:02:43,626 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-03 01:02:43,627 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:02:43" (1/1) ... [2023-04-03 01:02:43,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 01:02:43,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 01:02:43,673 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) [2023-04-03 01:02:43,681 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 [2023-04-03 01:02:43,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-03 01:02:43,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-03 01:02:43,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2023-04-03 01:02:43,716 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-03 01:02:43,716 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2023-04-03 01:02:43,716 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2023-04-03 01:02:43,716 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2023-04-03 01:02:43,716 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2023-04-03 01:02:43,716 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2023-04-03 01:02:43,716 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2023-04-03 01:02:43,717 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2023-04-03 01:02:43,717 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2023-04-03 01:02:43,717 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2023-04-03 01:02:43,717 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-04-03 01:02:43,717 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2023-04-03 01:02:43,717 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2023-04-03 01:02:43,717 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2023-04-03 01:02:43,717 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2023-04-03 01:02:43,717 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2023-04-03 01:02:43,718 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2023-04-03 01:02:43,718 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2023-04-03 01:02:43,718 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2023-04-03 01:02:43,718 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2023-04-03 01:02:43,718 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2023-04-03 01:02:43,718 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2023-04-03 01:02:43,718 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2023-04-03 01:02:43,718 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-04-03 01:02:43,718 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2023-04-03 01:02:43,719 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2023-04-03 01:02:43,719 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2023-04-03 01:02:43,719 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-03 01:02:43,720 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2023-04-03 01:02:43,721 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2023-04-03 01:02:43,721 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2023-04-03 01:02:43,721 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2023-04-03 01:02:43,721 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2023-04-03 01:02:43,721 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2023-04-03 01:02:43,721 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2023-04-03 01:02:43,721 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2023-04-03 01:02:43,721 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2023-04-03 01:02:43,721 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2023-04-03 01:02:43,722 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-04-03 01:02:43,722 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-03 01:02:43,722 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-03 01:02:43,723 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-03 01:02:43,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-03 01:02:43,723 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-03 01:02:43,723 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2023-04-03 01:02:43,724 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2023-04-03 01:02:43,724 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2023-04-03 01:02:43,724 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2023-04-03 01:02:43,724 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2023-04-03 01:02:43,724 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2023-04-03 01:02:43,724 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2023-04-03 01:02:43,725 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2023-04-03 01:02:43,725 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2023-04-03 01:02:43,725 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2023-04-03 01:02:43,725 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-04-03 01:02:43,726 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-04-03 01:02:43,726 INFO L130 BoogieDeclarations]: Found specification of procedure test [2023-04-03 01:02:43,727 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2023-04-03 01:02:43,727 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2023-04-03 01:02:43,727 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2023-04-03 01:02:43,727 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2023-04-03 01:02:43,727 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2023-04-03 01:02:43,727 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2023-04-03 01:02:43,727 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2023-04-03 01:02:43,727 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2023-04-03 01:02:43,727 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2023-04-03 01:02:43,727 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2023-04-03 01:02:43,727 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2023-04-03 01:02:43,728 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-04-03 01:02:43,728 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2023-04-03 01:02:43,728 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2023-04-03 01:02:43,728 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2023-04-03 01:02:43,728 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2023-04-03 01:02:43,728 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2023-04-03 01:02:43,728 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2023-04-03 01:02:43,728 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-03 01:02:43,728 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2023-04-03 01:02:43,728 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-03 01:02:43,729 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-03 01:02:43,729 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2023-04-03 01:02:43,729 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-03 01:02:43,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-03 01:02:43,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-03 01:02:43,730 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-03 01:02:43,730 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2023-04-03 01:02:43,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-03 01:02:43,730 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2023-04-03 01:02:43,731 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2023-04-03 01:02:43,731 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-03 01:02:43,731 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2023-04-03 01:02:43,731 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2023-04-03 01:02:43,731 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2023-04-03 01:02:43,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-03 01:02:43,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-03 01:02:43,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-03 01:02:43,919 INFO L236 CfgBuilder]: Building ICFG [2023-04-03 01:02:43,922 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-03 01:02:44,503 INFO L277 CfgBuilder]: Performing block encoding [2023-04-03 01:02:44,663 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-03 01:02:44,664 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-04-03 01:02:44,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 01:02:44 BoogieIcfgContainer [2023-04-03 01:02:44,668 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-03 01:02:44,671 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-03 01:02:44,672 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-03 01:02:44,675 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-03 01:02:44,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.04 01:02:43" (1/3) ... [2023-04-03 01:02:44,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6610d6e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 01:02:44, skipping insertion in model container [2023-04-03 01:02:44,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 01:02:43" (2/3) ... [2023-04-03 01:02:44,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6610d6e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 01:02:44, skipping insertion in model container [2023-04-03 01:02:44,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 01:02:44" (3/3) ... [2023-04-03 01:02:44,679 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product51.cil.c [2023-04-03 01:02:44,696 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-03 01:02:44,696 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-03 01:02:44,750 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-03 01:02:44,756 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;@28a6bffd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-03 01:02:44,757 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-03 01:02:44,761 INFO L276 IsEmpty]: Start isEmpty. Operand has 153 states, 71 states have (on average 1.2816901408450705) internal successors, (91), 85 states have internal predecessors, (91), 48 states have call successors, (48), 30 states have call predecessors, (48), 30 states have return successors, (48), 44 states have call predecessors, (48), 48 states have call successors, (48) [2023-04-03 01:02:44,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-04-03 01:02:44,771 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:02:44,771 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 01:02:44,772 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:02:44,777 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:02:44,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1286895266, now seen corresponding path program 1 times [2023-04-03 01:02:44,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:02:44,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601672866] [2023-04-03 01:02:44,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:02:44,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:02:44,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:02:44,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 01:02:44,989 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:02:44,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601672866] [2023-04-03 01:02:44,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601672866] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:02:44,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:02:44,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-04-03 01:02:44,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015263763] [2023-04-03 01:02:44,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:02:44,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-04-03 01:02:44,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:02:45,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-04-03 01:02:45,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-03 01:02:45,039 INFO L87 Difference]: Start difference. First operand has 153 states, 71 states have (on average 1.2816901408450705) internal successors, (91), 85 states have internal predecessors, (91), 48 states have call successors, (48), 30 states have call predecessors, (48), 30 states have return successors, (48), 44 states have call predecessors, (48), 48 states have call successors, (48) Second operand has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-04-03 01:02:45,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:02:45,149 INFO L93 Difference]: Finished difference Result 235 states and 286 transitions. [2023-04-03 01:02:45,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-04-03 01:02:45,151 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 47 [2023-04-03 01:02:45,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:02:45,159 INFO L225 Difference]: With dead ends: 235 [2023-04-03 01:02:45,160 INFO L226 Difference]: Without dead ends: 118 [2023-04-03 01:02:45,164 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 [2023-04-03 01:02:45,168 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 01:02:45,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 130 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 01:02:45,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2023-04-03 01:02:45,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2023-04-03 01:02:45,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 61 states have (on average 1.2459016393442623) internal successors, (76), 72 states have internal predecessors, (76), 33 states have call successors, (33), 28 states have call predecessors, (33), 23 states have return successors, (28), 24 states have call predecessors, (28), 28 states have call successors, (28) [2023-04-03 01:02:45,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 137 transitions. [2023-04-03 01:02:45,236 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 137 transitions. Word has length 47 [2023-04-03 01:02:45,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:02:45,237 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 137 transitions. [2023-04-03 01:02:45,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-04-03 01:02:45,240 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 137 transitions. [2023-04-03 01:02:45,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-04-03 01:02:45,250 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:02:45,250 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 01:02:45,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-03 01:02:45,250 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:02:45,251 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:02:45,251 INFO L85 PathProgramCache]: Analyzing trace with hash 58665765, now seen corresponding path program 1 times [2023-04-03 01:02:45,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:02:45,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537492776] [2023-04-03 01:02:45,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:02:45,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:02:45,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:02:45,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 01:02:45,424 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:02:45,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537492776] [2023-04-03 01:02:45,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537492776] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:02:45,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:02:45,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 01:02:45,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155739794] [2023-04-03 01:02:45,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:02:45,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 01:02:45,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:02:45,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 01:02:45,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 01:02:45,429 INFO L87 Difference]: Start difference. First operand 118 states and 137 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-04-03 01:02:45,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:02:45,513 INFO L93 Difference]: Finished difference Result 186 states and 214 transitions. [2023-04-03 01:02:45,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 01:02:45,514 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 48 [2023-04-03 01:02:45,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:02:45,518 INFO L225 Difference]: With dead ends: 186 [2023-04-03 01:02:45,519 INFO L226 Difference]: Without dead ends: 110 [2023-04-03 01:02:45,523 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 [2023-04-03 01:02:45,524 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 11 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-03 01:02:45,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 204 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-03 01:02:45,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2023-04-03 01:02:45,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2023-04-03 01:02:45,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 56 states have (on average 1.25) internal successors, (70), 67 states have internal predecessors, (70), 30 states have call successors, (30), 27 states have call predecessors, (30), 23 states have return successors, (26), 22 states have call predecessors, (26), 26 states have call successors, (26) [2023-04-03 01:02:45,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 126 transitions. [2023-04-03 01:02:45,545 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 126 transitions. Word has length 48 [2023-04-03 01:02:45,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:02:45,545 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 126 transitions. [2023-04-03 01:02:45,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-04-03 01:02:45,546 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 126 transitions. [2023-04-03 01:02:45,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-04-03 01:02:45,550 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:02:45,550 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 01:02:45,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-03 01:02:45,550 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:02:45,551 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:02:45,551 INFO L85 PathProgramCache]: Analyzing trace with hash 252311736, now seen corresponding path program 1 times [2023-04-03 01:02:45,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:02:45,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740269532] [2023-04-03 01:02:45,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:02:45,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:02:45,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:02:45,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 01:02:45,792 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:02:45,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740269532] [2023-04-03 01:02:45,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740269532] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:02:45,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:02:45,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-03 01:02:45,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103747689] [2023-04-03 01:02:45,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:02:45,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-03 01:02:45,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:02:45,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-03 01:02:45,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-04-03 01:02:45,796 INFO L87 Difference]: Start difference. First operand 110 states and 126 transitions. Second operand has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 4 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-04-03 01:02:46,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:02:46,118 INFO L93 Difference]: Finished difference Result 335 states and 397 transitions. [2023-04-03 01:02:46,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-03 01:02:46,119 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 4 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 51 [2023-04-03 01:02:46,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:02:46,127 INFO L225 Difference]: With dead ends: 335 [2023-04-03 01:02:46,127 INFO L226 Difference]: Without dead ends: 247 [2023-04-03 01:02:46,131 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 [2023-04-03 01:02:46,133 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 205 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-03 01:02:46,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 553 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-03 01:02:46,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2023-04-03 01:02:46,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 239. [2023-04-03 01:02:46,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 128 states have (on average 1.28125) internal successors, (164), 150 states have internal predecessors, (164), 61 states have call successors, (61), 55 states have call predecessors, (61), 49 states have return successors, (58), 45 states have call predecessors, (58), 57 states have call successors, (58) [2023-04-03 01:02:46,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 283 transitions. [2023-04-03 01:02:46,190 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 283 transitions. Word has length 51 [2023-04-03 01:02:46,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:02:46,190 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 283 transitions. [2023-04-03 01:02:46,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 4 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-04-03 01:02:46,193 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 283 transitions. [2023-04-03 01:02:46,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-04-03 01:02:46,197 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:02:46,198 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] [2023-04-03 01:02:46,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-03 01:02:46,198 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:02:46,199 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:02:46,199 INFO L85 PathProgramCache]: Analyzing trace with hash -271139142, now seen corresponding path program 1 times [2023-04-03 01:02:46,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:02:46,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683687520] [2023-04-03 01:02:46,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:02:46,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:02:46,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 01:02:46,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 01:02:46,460 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 01:02:46,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683687520] [2023-04-03 01:02:46,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683687520] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 01:02:46,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 01:02:46,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-03 01:02:46,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878778301] [2023-04-03 01:02:46,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 01:02:46,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-03 01:02:46,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 01:02:46,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-03 01:02:46,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-03 01:02:46,462 INFO L87 Difference]: Start difference. First operand 239 states and 283 transitions. Second operand has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-04-03 01:02:46,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 01:02:46,645 INFO L93 Difference]: Finished difference Result 661 states and 808 transitions. [2023-04-03 01:02:46,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-03 01:02:46,645 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 56 [2023-04-03 01:02:46,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 01:02:46,652 INFO L225 Difference]: With dead ends: 661 [2023-04-03 01:02:46,652 INFO L226 Difference]: Without dead ends: 444 [2023-04-03 01:02:46,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-04-03 01:02:46,663 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 84 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 01:02:46,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 477 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 01:02:46,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2023-04-03 01:02:46,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 420. [2023-04-03 01:02:46,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 231 states have (on average 1.2857142857142858) internal successors, (297), 268 states have internal predecessors, (297), 104 states have call successors, (104), 92 states have call predecessors, (104), 84 states have return successors, (106), 76 states have call predecessors, (106), 100 states have call successors, (106) [2023-04-03 01:02:46,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 507 transitions. [2023-04-03 01:02:46,718 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 507 transitions. Word has length 56 [2023-04-03 01:02:46,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 01:02:46,718 INFO L495 AbstractCegarLoop]: Abstraction has 420 states and 507 transitions. [2023-04-03 01:02:46,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-04-03 01:02:46,718 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 507 transitions. [2023-04-03 01:02:46,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-04-03 01:02:46,721 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 01:02:46,722 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] [2023-04-03 01:02:46,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-03 01:02:46,722 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 01:02:46,722 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 01:02:46,722 INFO L85 PathProgramCache]: Analyzing trace with hash -1906382823, now seen corresponding path program 1 times [2023-04-03 01:02:46,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 01:02:46,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854923248] [2023-04-03 01:02:46,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 01:02:46,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 01:02:46,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-04-03 01:02:46,752 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-04-03 01:02:46,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-04-03 01:02:46,805 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-04-03 01:02:46,805 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-04-03 01:02:46,806 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-03 01:02:46,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-03 01:02:46,814 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-04-03 01:02:46,817 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-03 01:02:46,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.04 01:02:46 BoogieIcfgContainer [2023-04-03 01:02:46,874 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-03 01:02:46,875 INFO L158 Benchmark]: Toolchain (without parser) took 3693.20ms. Allocated memory was 177.2MB in the beginning and 295.7MB in the end (delta: 118.5MB). Free memory was 121.7MB in the beginning and 196.7MB in the end (delta: -75.0MB). Peak memory consumption was 44.1MB. Max. memory is 8.0GB. [2023-04-03 01:02:46,875 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 177.2MB. Free memory is still 127.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-04-03 01:02:46,875 INFO L158 Benchmark]: CACSL2BoogieTranslator took 382.20ms. Allocated memory is still 177.2MB. Free memory was 121.4MB in the beginning and 102.8MB in the end (delta: 18.6MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2023-04-03 01:02:46,875 INFO L158 Benchmark]: Boogie Preprocessor took 59.48ms. Allocated memory is still 177.2MB. Free memory was 102.8MB in the beginning and 99.3MB in the end (delta: 3.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-04-03 01:02:46,876 INFO L158 Benchmark]: RCFGBuilder took 1041.93ms. Allocated memory was 177.2MB in the beginning and 295.7MB in the end (delta: 118.5MB). Free memory was 99.3MB in the beginning and 212.4MB in the end (delta: -113.1MB). Peak memory consumption was 16.3MB. Max. memory is 8.0GB. [2023-04-03 01:02:46,876 INFO L158 Benchmark]: TraceAbstraction took 2202.93ms. Allocated memory is still 295.7MB. Free memory was 211.9MB in the beginning and 196.7MB in the end (delta: 15.2MB). Peak memory consumption was 15.2MB. Max. memory is 8.0GB. [2023-04-03 01:02:46,877 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 177.2MB. Free memory is still 127.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 382.20ms. Allocated memory is still 177.2MB. Free memory was 121.4MB in the beginning and 102.8MB in the end (delta: 18.6MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * Boogie Preprocessor took 59.48ms. Allocated memory is still 177.2MB. Free memory was 102.8MB in the beginning and 99.3MB in the end (delta: 3.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 1041.93ms. Allocated memory was 177.2MB in the beginning and 295.7MB in the end (delta: 118.5MB). Free memory was 99.3MB in the beginning and 212.4MB in the end (delta: -113.1MB). Peak memory consumption was 16.3MB. Max. memory is 8.0GB. * TraceAbstraction took 2202.93ms. Allocated memory is still 295.7MB. Free memory was 211.9MB in the beginning and 196.7MB in the end (delta: 15.2MB). Peak memory consumption was 15.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 987]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L58] int waterLevel = 1; [L59] int methaneLevelCritical = 0; [L235] int pumpRunning = 0; [L236] int systemActive = 1; [L483] int cleanupTimeShifts = 4; [L786] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L559] int retValue_acc ; [L560] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L564] FCALL select_helpers() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L565] FCALL select_features() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L566] CALL, EXPR valid_product() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L608] int retValue_acc ; [L611] retValue_acc = 1 [L612] return (retValue_acc); [L566] RET, EXPR valid_product() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, valid_product()=1, waterLevel=1] [L566] tmp = valid_product() [L568] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L570] FCALL setup() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L571] CALL runTest() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L550] CALL test() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L165] int splverifierCounter ; [L166] int tmp ; [L167] int tmp___0 ; [L168] int tmp___1 ; [L169] int tmp___2 ; [L172] splverifierCounter = 0 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L174] COND TRUE 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L176] COND TRUE splverifierCounter < 4 [L182] tmp = __VERIFIER_nondet_int() [L184] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L186] CALL waterRise() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L76] COND TRUE waterLevel < 2 [L77] waterLevel = waterLevel + 1 [L186] RET waterRise() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2] [L192] tmp___0 = __VERIFIER_nondet_int() [L194] COND FALSE !(\read(tmp___0)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, waterLevel=2] [L202] tmp___2 = __VERIFIER_nondet_int() [L204] COND FALSE !(\read(tmp___2)) [L208] tmp___1 = __VERIFIER_nondet_int() [L210] COND TRUE \read(tmp___1) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___1=1, tmp___2=0, waterLevel=2] [L212] CALL stopSystem() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L436] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L443] systemActive = 0 [L212] RET stopSystem() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=0, tmp=1, tmp___0=0, tmp___1=1, tmp___2=0, waterLevel=2] [L219] CALL timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L243] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L250] COND FALSE !(\read(systemActive)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L258] CALL __utac_acc__Specification3_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L450] int tmp ; [L451] int tmp___0 ; [L452] int tmp___1 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L456] CALL, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L97] int retValue_acc ; [L100] retValue_acc = methaneLevelCritical [L101] return (retValue_acc); [L456] RET, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=0, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L456] tmp = isMethaneLevelCritical() [L458] COND FALSE !(\read(tmp)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, tmp=0, waterLevel=2] [L462] CALL, EXPR getWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L129] int retValue_acc ; [L132] retValue_acc = waterLevel [L133] return (retValue_acc); [L462] RET, EXPR getWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, getWaterLevel()=2, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, tmp=0, waterLevel=2] [L462] tmp___0 = getWaterLevel() [L464] COND TRUE tmp___0 == 2 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, tmp=0, tmp___0=2, waterLevel=2] [L466] CALL, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L350] int retValue_acc ; [L353] retValue_acc = pumpRunning [L354] return (retValue_acc); [L466] RET, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isPumpRunning()=0, methaneLevelCritical=0, pumpRunning=0, systemActive=0, tmp=0, tmp___0=2, waterLevel=2] [L466] tmp___1 = isPumpRunning() [L468] COND FALSE !(\read(tmp___1)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, tmp=0, tmp___0=2, tmp___1=0, waterLevel=2] [L472] CALL __automaton_fail() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L987] reach_error() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 42 procedures, 194 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.1s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 306 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 300 mSDsluCounter, 1364 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 884 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 464 IncrementalHoareTripleChecker+Invalid, 470 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 480 mSDtfsCounter, 464 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=420occurred in iteration=4, InterpolantAutomatonStates: 20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 4 MinimizatonAttempts, 32 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 261 NumberOfCodeBlocks, 261 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 198 ConstructedInterpolants, 0 QuantifiedInterpolants, 360 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-04-03 01:02:46,896 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...