/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 IntervalDomain -i ../sv-benchmarks/c/product-lines/minepump_spec3_product29.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 23:54:46,425 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 23:54:46,427 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 23:54:46,458 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 23:54:46,459 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 23:54:46,461 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 23:54:46,463 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 23:54:46,465 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 23:54:46,466 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 23:54:46,470 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 23:54:46,471 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 23:54:46,472 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 23:54:46,472 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 23:54:46,474 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 23:54:46,475 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 23:54:46,476 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 23:54:46,476 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 23:54:46,477 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 23:54:46,478 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 23:54:46,482 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 23:54:46,482 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 23:54:46,483 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 23:54:46,484 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 23:54:46,485 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 23:54:46,491 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-03-31 23:54:46,491 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-03-31 23:54:46,491 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-03-31 23:54:46,492 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-03-31 23:54:46,492 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-03-31 23:54:46,493 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-03-31 23:54:46,493 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-31 23:54:46,493 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-31 23:54:46,494 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-31 23:54:46,495 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-31 23:54:46,495 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-31 23:54:46,495 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-31 23:54:46,496 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-31 23:54:46,496 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-31 23:54:46,496 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 23:54:46,497 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 23:54:46,497 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 23:54:46,498 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 [2023-03-31 23:54:46,521 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 23:54:46,521 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 23:54:46,522 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 23:54:46,522 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 23:54:46,523 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 23:54:46,523 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 23:54:46,523 INFO L138 SettingsManager]: * User list type=DISABLED [2023-03-31 23:54:46,523 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-03-31 23:54:46,523 INFO L138 SettingsManager]: * Explicit value domain=true [2023-03-31 23:54:46,523 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-03-31 23:54:46,524 INFO L138 SettingsManager]: * Octagon Domain=false [2023-03-31 23:54:46,524 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-03-31 23:54:46,524 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-03-31 23:54:46,524 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-03-31 23:54:46,524 INFO L138 SettingsManager]: * Interval Domain=false [2023-03-31 23:54:46,524 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-03-31 23:54:46,524 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-03-31 23:54:46,524 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-03-31 23:54:46,525 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 23:54:46,525 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 23:54:46,525 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 23:54:46,525 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 23:54:46,525 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 23:54:46,525 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 23:54:46,525 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 23:54:46,526 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 23:54:46,526 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 23:54:46,526 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 23:54:46,526 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 23:54:46,526 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 23:54:46,526 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 23:54:46,526 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 23:54:46,527 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 23:54:46,527 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 23:54:46,527 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-03-31 23:54:46,527 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 23:54:46,527 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 23:54:46,527 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-03-31 23:54:46,527 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 23:54:46,527 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 23:54:46,527 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-03-31 23:54:46,528 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> IntervalDomain [2023-03-31 23:54:46,712 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 23:54:46,730 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 23:54:46,732 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 23:54:46,733 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 23:54:46,734 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 23:54:46,734 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec3_product29.cil.c [2023-03-31 23:54:47,764 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 23:54:47,997 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 23:54:47,997 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product29.cil.c [2023-03-31 23:54:48,006 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5756c8abe/ea9362c859b64e149143dd7dae9f4cf4/FLAGf44a53bfd [2023-03-31 23:54:48,022 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5756c8abe/ea9362c859b64e149143dd7dae9f4cf4 [2023-03-31 23:54:48,024 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 23:54:48,025 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 23:54:48,027 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 23:54:48,027 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 23:54:48,030 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 23:54:48,031 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 11:54:48" (1/1) ... [2023-03-31 23:54:48,032 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36e8f295 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:54:48, skipping insertion in model container [2023-03-31 23:54:48,032 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 11:54:48" (1/1) ... [2023-03-31 23:54:48,036 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 23:54:48,060 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 23:54:48,216 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_product29.cil.c[13732,13745] [2023-03-31 23:54:48,235 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 23:54:48,250 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 23:54:48,283 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_product29.cil.c[13732,13745] [2023-03-31 23:54:48,290 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 23:54:48,302 INFO L208 MainTranslator]: Completed translation [2023-03-31 23:54:48,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:54:48 WrapperNode [2023-03-31 23:54:48,303 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 23:54:48,304 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 23:54:48,304 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 23:54:48,304 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 23:54:48,314 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:54:48" (1/1) ... [2023-03-31 23:54:48,314 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:54:48" (1/1) ... [2023-03-31 23:54:48,327 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:54:48" (1/1) ... [2023-03-31 23:54:48,327 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:54:48" (1/1) ... [2023-03-31 23:54:48,347 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:54:48" (1/1) ... [2023-03-31 23:54:48,352 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:54:48" (1/1) ... [2023-03-31 23:54:48,354 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:54:48" (1/1) ... [2023-03-31 23:54:48,356 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:54:48" (1/1) ... [2023-03-31 23:54:48,360 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 23:54:48,360 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 23:54:48,360 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 23:54:48,360 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 23:54:48,361 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:54:48" (1/1) ... [2023-03-31 23:54:48,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 23:54:48,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 23:54:48,396 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) [2023-03-31 23:54:48,403 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 [2023-03-31 23:54:48,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 23:54:48,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 23:54:48,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2023-03-31 23:54:48,422 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 23:54:48,423 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2023-03-31 23:54:48,423 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2023-03-31 23:54:48,423 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2023-03-31 23:54:48,423 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2023-03-31 23:54:48,423 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2023-03-31 23:54:48,423 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2023-03-31 23:54:48,423 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2023-03-31 23:54:48,423 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2023-03-31 23:54:48,423 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2023-03-31 23:54:48,423 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2023-03-31 23:54:48,423 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2023-03-31 23:54:48,423 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2023-03-31 23:54:48,424 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2023-03-31 23:54:48,424 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2023-03-31 23:54:48,424 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2023-03-31 23:54:48,424 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2023-03-31 23:54:48,424 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2023-03-31 23:54:48,424 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2023-03-31 23:54:48,424 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-03-31 23:54:48,424 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-03-31 23:54:48,424 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2023-03-31 23:54:48,424 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2023-03-31 23:54:48,424 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2023-03-31 23:54:48,424 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 23:54:48,424 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-03-31 23:54:48,425 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2023-03-31 23:54:48,425 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2023-03-31 23:54:48,425 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2023-03-31 23:54:48,425 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2023-03-31 23:54:48,425 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2023-03-31 23:54:48,425 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2023-03-31 23:54:48,425 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2023-03-31 23:54:48,425 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2023-03-31 23:54:48,425 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2023-03-31 23:54:48,425 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2023-03-31 23:54:48,425 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2023-03-31 23:54:48,425 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 23:54:48,426 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 23:54:48,426 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 23:54:48,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 23:54:48,426 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-03-31 23:54:48,426 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2023-03-31 23:54:48,426 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-03-31 23:54:48,426 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2023-03-31 23:54:48,426 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2023-03-31 23:54:48,426 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2023-03-31 23:54:48,426 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2023-03-31 23:54:48,426 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2023-03-31 23:54:48,426 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2023-03-31 23:54:48,427 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2023-03-31 23:54:48,427 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2023-03-31 23:54:48,427 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2023-03-31 23:54:48,427 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-03-31 23:54:48,427 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-03-31 23:54:48,427 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2023-03-31 23:54:48,427 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-03-31 23:54:48,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-03-31 23:54:48,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 23:54:48,427 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-03-31 23:54:48,427 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2023-03-31 23:54:48,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 23:54:48,427 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2023-03-31 23:54:48,428 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2023-03-31 23:54:48,428 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 23:54:48,428 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2023-03-31 23:54:48,428 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2023-03-31 23:54:48,428 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2023-03-31 23:54:48,428 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2023-03-31 23:54:48,428 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2023-03-31 23:54:48,428 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2023-03-31 23:54:48,428 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2023-03-31 23:54:48,428 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-03-31 23:54:48,428 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-03-31 23:54:48,428 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2023-03-31 23:54:48,428 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2023-03-31 23:54:48,429 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2023-03-31 23:54:48,429 INFO L130 BoogieDeclarations]: Found specification of procedure test [2023-03-31 23:54:48,429 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2023-03-31 23:54:48,429 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 23:54:48,429 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2023-03-31 23:54:48,429 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2023-03-31 23:54:48,429 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2023-03-31 23:54:48,429 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2023-03-31 23:54:48,429 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2023-03-31 23:54:48,429 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2023-03-31 23:54:48,429 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2023-03-31 23:54:48,429 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2023-03-31 23:54:48,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 23:54:48,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 23:54:48,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 23:54:48,542 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 23:54:48,544 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 23:54:48,888 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 23:54:48,983 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 23:54:48,983 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-03-31 23:54:48,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 11:54:48 BoogieIcfgContainer [2023-03-31 23:54:48,986 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 23:54:48,988 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 23:54:48,988 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 23:54:48,990 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 23:54:48,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 11:54:48" (1/3) ... [2023-03-31 23:54:48,991 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2210affa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 11:54:48, skipping insertion in model container [2023-03-31 23:54:48,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:54:48" (2/3) ... [2023-03-31 23:54:48,991 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2210affa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 11:54:48, skipping insertion in model container [2023-03-31 23:54:48,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 11:54:48" (3/3) ... [2023-03-31 23:54:48,994 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product29.cil.c [2023-03-31 23:54:49,007 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 23:54:49,007 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 23:54:49,064 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 23:54:49,081 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;@56f276b3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-03-31 23:54:49,081 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 23:54:49,084 INFO L276 IsEmpty]: Start isEmpty. Operand has 147 states, 68 states have (on average 1.2647058823529411) internal successors, (86), 81 states have internal predecessors, (86), 47 states have call successors, (47), 28 states have call predecessors, (47), 28 states have return successors, (47), 43 states have call predecessors, (47), 47 states have call successors, (47) [2023-03-31 23:54:49,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-03-31 23:54:49,095 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:54:49,096 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] [2023-03-31 23:54:49,096 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:54:49,100 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:54:49,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1804349416, now seen corresponding path program 1 times [2023-03-31 23:54:49,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:54:49,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827569019] [2023-03-31 23:54:49,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:54:49,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:54:49,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:54:49,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 23:54:49,259 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:54:49,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827569019] [2023-03-31 23:54:49,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827569019] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:54:49,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 23:54:49,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-03-31 23:54:49,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995260199] [2023-03-31 23:54:49,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:54:49,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-03-31 23:54:49,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:54:49,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-03-31 23:54:49,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-03-31 23:54:49,292 INFO L87 Difference]: Start difference. First operand has 147 states, 68 states have (on average 1.2647058823529411) internal successors, (86), 81 states have internal predecessors, (86), 47 states have call successors, (47), 28 states have call predecessors, (47), 28 states have return successors, (47), 43 states have call predecessors, (47), 47 states have call successors, (47) 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) [2023-03-31 23:54:49,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:54:49,368 INFO L93 Difference]: Finished difference Result 213 states and 260 transitions. [2023-03-31 23:54:49,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-03-31 23:54:49,376 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 [2023-03-31 23:54:49,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:54:49,382 INFO L225 Difference]: With dead ends: 213 [2023-03-31 23:54:49,383 INFO L226 Difference]: Without dead ends: 107 [2023-03-31 23:54:49,386 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 [2023-03-31 23:54:49,389 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-31 23:54:49,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 119 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 23:54:49,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2023-03-31 23:54:49,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2023-03-31 23:54:49,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 55 states have (on average 1.2181818181818183) internal successors, (67), 64 states have internal predecessors, (67), 31 states have call successors, (31), 25 states have call predecessors, (31), 20 states have return successors, (26), 22 states have call predecessors, (26), 26 states have call successors, (26) [2023-03-31 23:54:49,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 124 transitions. [2023-03-31 23:54:49,445 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 124 transitions. Word has length 47 [2023-03-31 23:54:49,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:54:49,446 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 124 transitions. [2023-03-31 23:54:49,446 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) [2023-03-31 23:54:49,446 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 124 transitions. [2023-03-31 23:54:49,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-03-31 23:54:49,448 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:54:49,448 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] [2023-03-31 23:54:49,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 23:54:49,449 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:54:49,449 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:54:49,449 INFO L85 PathProgramCache]: Analyzing trace with hash 2118808774, now seen corresponding path program 1 times [2023-03-31 23:54:49,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:54:49,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673685322] [2023-03-31 23:54:49,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:54:49,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:54:49,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:54:49,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 23:54:49,546 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:54:49,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673685322] [2023-03-31 23:54:49,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673685322] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:54:49,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 23:54:49,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-03-31 23:54:49,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372377964] [2023-03-31 23:54:49,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:54:49,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-31 23:54:49,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:54:49,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-31 23:54:49,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-31 23:54:49,548 INFO L87 Difference]: Start difference. First operand 107 states and 124 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (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) [2023-03-31 23:54:49,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:54:49,589 INFO L93 Difference]: Finished difference Result 171 states and 199 transitions. [2023-03-31 23:54:49,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-31 23:54:49,589 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 [2023-03-31 23:54:49,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:54:49,592 INFO L225 Difference]: With dead ends: 171 [2023-03-31 23:54:49,592 INFO L226 Difference]: Without dead ends: 99 [2023-03-31 23:54:49,593 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 [2023-03-31 23:54:49,594 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 7 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-31 23:54:49,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 188 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 23:54:49,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2023-03-31 23:54:49,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2023-03-31 23:54:49,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 50 states have (on average 1.22) internal successors, (61), 59 states have internal predecessors, (61), 28 states have call successors, (28), 24 states have call predecessors, (28), 20 states have return successors, (24), 20 states have call predecessors, (24), 24 states have call successors, (24) [2023-03-31 23:54:49,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 113 transitions. [2023-03-31 23:54:49,601 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 113 transitions. Word has length 48 [2023-03-31 23:54:49,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:54:49,601 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 113 transitions. [2023-03-31 23:54:49,601 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) [2023-03-31 23:54:49,601 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 113 transitions. [2023-03-31 23:54:49,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-03-31 23:54:49,603 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:54:49,603 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] [2023-03-31 23:54:49,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-31 23:54:49,603 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:54:49,603 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:54:49,603 INFO L85 PathProgramCache]: Analyzing trace with hash 2614508, now seen corresponding path program 1 times [2023-03-31 23:54:49,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:54:49,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837092346] [2023-03-31 23:54:49,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:54:49,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:54:49,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:54:49,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 23:54:49,700 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:54:49,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837092346] [2023-03-31 23:54:49,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837092346] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:54:49,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 23:54:49,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-03-31 23:54:49,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811280922] [2023-03-31 23:54:49,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:54:49,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-31 23:54:49,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:54:49,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-31 23:54:49,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-31 23:54:49,703 INFO L87 Difference]: Start difference. First operand 99 states and 113 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2023-03-31 23:54:49,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:54:49,744 INFO L93 Difference]: Finished difference Result 176 states and 205 transitions. [2023-03-31 23:54:49,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-31 23:54:49,744 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) Word has length 50 [2023-03-31 23:54:49,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:54:49,746 INFO L225 Difference]: With dead ends: 176 [2023-03-31 23:54:49,746 INFO L226 Difference]: Without dead ends: 99 [2023-03-31 23:54:49,747 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 [2023-03-31 23:54:49,748 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 90 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-31 23:54:49,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 98 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 23:54:49,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2023-03-31 23:54:49,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2023-03-31 23:54:49,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 50 states have (on average 1.2) internal successors, (60), 58 states have internal predecessors, (60), 28 states have call successors, (28), 24 states have call predecessors, (28), 20 states have return successors, (24), 20 states have call predecessors, (24), 24 states have call successors, (24) [2023-03-31 23:54:49,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 112 transitions. [2023-03-31 23:54:49,757 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 112 transitions. Word has length 50 [2023-03-31 23:54:49,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:54:49,758 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 112 transitions. [2023-03-31 23:54:49,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2023-03-31 23:54:49,758 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 112 transitions. [2023-03-31 23:54:49,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-03-31 23:54:49,759 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:54:49,759 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, 1, 1, 1] [2023-03-31 23:54:49,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-03-31 23:54:49,760 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:54:49,760 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:54:49,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1146049980, now seen corresponding path program 1 times [2023-03-31 23:54:49,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:54:49,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886796695] [2023-03-31 23:54:49,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:54:49,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:54:49,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:54:50,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 23:54:50,007 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:54:50,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886796695] [2023-03-31 23:54:50,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886796695] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:54:50,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 23:54:50,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-03-31 23:54:50,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093574406] [2023-03-31 23:54:50,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:54:50,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 23:54:50,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:54:50,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 23:54:50,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 23:54:50,008 INFO L87 Difference]: Start difference. First operand 99 states and 112 transitions. Second operand has 6 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2023-03-31 23:54:50,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:54:50,155 INFO L93 Difference]: Finished difference Result 245 states and 289 transitions. [2023-03-31 23:54:50,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 23:54:50,155 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) Word has length 63 [2023-03-31 23:54:50,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:54:50,159 INFO L225 Difference]: With dead ends: 245 [2023-03-31 23:54:50,159 INFO L226 Difference]: Without dead ends: 168 [2023-03-31 23:54:50,161 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 [2023-03-31 23:54:50,162 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 71 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 23:54:50,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 419 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 23:54:50,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2023-03-31 23:54:50,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 162. [2023-03-31 23:54:50,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 85 states have (on average 1.2117647058823529) internal successors, (103), 98 states have internal predecessors, (103), 44 states have call successors, (44), 36 states have call predecessors, (44), 32 states have return successors, (41), 32 states have call predecessors, (41), 40 states have call successors, (41) [2023-03-31 23:54:50,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 188 transitions. [2023-03-31 23:54:50,180 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 188 transitions. Word has length 63 [2023-03-31 23:54:50,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:54:50,180 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 188 transitions. [2023-03-31 23:54:50,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2023-03-31 23:54:50,181 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 188 transitions. [2023-03-31 23:54:50,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-03-31 23:54:50,183 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:54:50,183 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:54:50,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-03-31 23:54:50,183 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:54:50,183 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:54:50,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1739569172, now seen corresponding path program 1 times [2023-03-31 23:54:50,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:54:50,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258978262] [2023-03-31 23:54:50,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:54:50,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:54:50,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-03-31 23:54:50,196 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-03-31 23:54:50,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-03-31 23:54:50,233 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-03-31 23:54:50,234 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-03-31 23:54:50,234 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-03-31 23:54:50,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-03-31 23:54:50,240 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-03-31 23:54:50,243 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-03-31 23:54:50,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.03 11:54:50 BoogieIcfgContainer [2023-03-31 23:54:50,291 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-03-31 23:54:50,291 INFO L158 Benchmark]: Toolchain (without parser) took 2265.95ms. Allocated memory is still 244.3MB. Free memory was 204.0MB in the beginning and 170.2MB in the end (delta: 33.7MB). Peak memory consumption was 34.8MB. Max. memory is 8.0GB. [2023-03-31 23:54:50,291 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 197.1MB. Free memory is still 143.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-03-31 23:54:50,291 INFO L158 Benchmark]: CACSL2BoogieTranslator took 275.94ms. Allocated memory is still 244.3MB. Free memory was 204.0MB in the beginning and 185.6MB in the end (delta: 18.3MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2023-03-31 23:54:50,292 INFO L158 Benchmark]: Boogie Preprocessor took 56.09ms. Allocated memory is still 244.3MB. Free memory was 185.6MB in the beginning and 181.9MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-03-31 23:54:50,295 INFO L158 Benchmark]: RCFGBuilder took 625.73ms. Allocated memory is still 244.3MB. Free memory was 181.9MB in the beginning and 204.3MB in the end (delta: -22.4MB). Peak memory consumption was 64.1MB. Max. memory is 8.0GB. [2023-03-31 23:54:50,297 INFO L158 Benchmark]: TraceAbstraction took 1303.01ms. Allocated memory is still 244.3MB. Free memory was 203.3MB in the beginning and 170.2MB in the end (delta: 33.1MB). Peak memory consumption was 33.6MB. Max. memory is 8.0GB. [2023-03-31 23:54:50,298 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 197.1MB. Free memory is still 143.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 275.94ms. Allocated memory is still 244.3MB. Free memory was 204.0MB in the beginning and 185.6MB in the end (delta: 18.3MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * Boogie Preprocessor took 56.09ms. Allocated memory is still 244.3MB. Free memory was 185.6MB in the beginning and 181.9MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 625.73ms. Allocated memory is still 244.3MB. Free memory was 181.9MB in the beginning and 204.3MB in the end (delta: -22.4MB). Peak memory consumption was 64.1MB. Max. memory is 8.0GB. * TraceAbstraction took 1303.01ms. Allocated memory is still 244.3MB. Free memory was 203.3MB in the beginning and 170.2MB in the end (delta: 33.1MB). Peak memory consumption was 33.6MB. 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: 590]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L93] int waterLevel = 1; [L94] int methaneLevelCritical = 0; [L351] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L595] int cleanupTimeShifts = 4; [L696] int pumpRunning = 0; [L697] int systemActive = 1; [L671] int retValue_acc ; [L672] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L676] FCALL select_helpers() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L677] FCALL select_features() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L678] CALL, EXPR valid_product() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L577] int retValue_acc ; [L580] retValue_acc = 1 [L581] return (retValue_acc); [L678] RET, EXPR valid_product() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, valid_product()=1, waterLevel=1] [L678] tmp = valid_product() [L680] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L682] FCALL setup() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L683] CALL runTest() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L665] CALL test() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L892] int splverifierCounter ; [L893] int tmp ; [L894] int tmp___0 ; [L895] int tmp___1 ; [L896] int tmp___2 ; [L899] splverifierCounter = 0 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L901] COND TRUE 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L903] COND TRUE splverifierCounter < 4 [L909] tmp = __VERIFIER_nondet_int() [L911] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L913] CALL waterRise() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L111] COND TRUE waterLevel < 2 [L112] waterLevel = waterLevel + 1 [L913] RET waterRise() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2] [L919] tmp___0 = __VERIFIER_nondet_int() [L921] COND FALSE !(\read(tmp___0)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, waterLevel=2] [L929] tmp___2 = __VERIFIER_nondet_int() [L931] COND TRUE \read(tmp___2) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, __VERIFIER_nondet_int()=57, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___1=-2, tmp___2=-1, waterLevel=2] [L944] CALL timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L703] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L710] COND TRUE \read(systemActive) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L712] CALL processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L758] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L761] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L776] CALL processEnvironment__wrappee__methaneQuery() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L732] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L735] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L750] FCALL processEnvironment__wrappee__base() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L776] RET processEnvironment__wrappee__methaneQuery() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L712] RET processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L718] CALL __utac_acc__Specification3_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L55] int tmp ; [L56] int tmp___0 ; [L57] int tmp___1 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L61] CALL, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L132] int retValue_acc ; [L135] retValue_acc = methaneLevelCritical [L136] return (retValue_acc); [L61] RET, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L61] tmp = isMethaneLevelCritical() [L63] COND FALSE !(\read(tmp)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=0, waterLevel=2] [L67] CALL, EXPR getWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L164] int retValue_acc ; [L167] retValue_acc = waterLevel [L168] return (retValue_acc); [L67] RET, EXPR getWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, getWaterLevel()=2, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=0, waterLevel=2] [L67] tmp___0 = getWaterLevel() [L69] COND TRUE tmp___0 == 2 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=0, tmp___0=2, waterLevel=2] [L71] CALL, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L827] int retValue_acc ; [L830] retValue_acc = pumpRunning [L831] return (retValue_acc); [L71] RET, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isPumpRunning()=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=0, tmp___0=2, waterLevel=2] [L71] tmp___1 = isPumpRunning() [L73] COND FALSE !(\read(tmp___1)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=0, tmp___0=2, tmp___1=0, waterLevel=2] [L77] CALL __automaton_fail() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L590] reach_error() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 188 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.2s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 172 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 168 mSDsluCounter, 824 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 411 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 183 IncrementalHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 413 mSDtfsCounter, 183 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=162occurred in iteration=4, InterpolantAutomatonStates: 15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 6 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 274 NumberOfCodeBlocks, 274 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 204 ConstructedInterpolants, 0 QuantifiedInterpolants, 312 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! [2023-03-31 23:54:50,328 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...