/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_spec1_product51.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-03 00:59:25,043 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-03 00:59:25,045 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-03 00:59:25,071 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-03 00:59:25,071 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-03 00:59:25,075 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-03 00:59:25,079 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-03 00:59:25,082 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-03 00:59:25,084 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-03 00:59:25,089 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-03 00:59:25,091 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-03 00:59:25,092 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-03 00:59:25,093 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-03 00:59:25,096 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-03 00:59:25,097 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-03 00:59:25,099 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-03 00:59:25,100 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-03 00:59:25,101 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-03 00:59:25,103 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-03 00:59:25,108 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-03 00:59:25,109 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-03 00:59:25,111 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-03 00:59:25,111 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-03 00:59:25,112 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-03 00:59:25,120 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-03 00:59:25,120 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-03 00:59:25,121 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-03 00:59:25,122 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-03 00:59:25,122 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-03 00:59:25,123 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-03 00:59:25,123 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-03 00:59:25,124 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-03 00:59:25,125 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-03 00:59:25,126 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-03 00:59:25,126 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-03 00:59:25,127 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-03 00:59:25,127 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-03 00:59:25,127 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-03 00:59:25,127 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-03 00:59:25,128 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-03 00:59:25,129 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-03 00:59:25,130 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 00:59:25,156 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-03 00:59:25,157 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-03 00:59:25,157 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-03 00:59:25,157 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-03 00:59:25,158 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-03 00:59:25,158 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-03 00:59:25,159 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-03 00:59:25,159 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-03 00:59:25,159 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-03 00:59:25,159 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-03 00:59:25,160 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-03 00:59:25,160 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-03 00:59:25,160 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-03 00:59:25,160 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-03 00:59:25,160 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-03 00:59:25,161 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-03 00:59:25,161 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-03 00:59:25,161 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-03 00:59:25,161 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-03 00:59:25,161 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-03 00:59:25,162 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-03 00:59:25,162 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-03 00:59:25,162 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-03 00:59:25,162 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-03 00:59:25,162 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-03 00:59:25,162 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-03 00:59:25,163 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-03 00:59:25,163 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-03 00:59:25,163 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-03 00:59:25,163 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-03 00:59:25,163 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-03 00:59:25,163 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-03 00:59:25,164 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 00:59:25,164 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-03 00:59:25,164 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-03 00:59:25,164 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-03 00:59:25,164 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-03 00:59:25,164 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-03 00:59:25,165 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-03 00:59:25,165 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-03 00:59:25,165 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-03 00:59:25,165 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-03 00:59:25,404 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-03 00:59:25,420 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-03 00:59:25,422 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-03 00:59:25,423 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-03 00:59:25,424 INFO L275 PluginConnector]: CDTParser initialized [2023-04-03 00:59:25,425 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec1_product51.cil.c [2023-04-03 00:59:26,602 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-03 00:59:26,816 INFO L351 CDTParser]: Found 1 translation units. [2023-04-03 00:59:26,817 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec1_product51.cil.c [2023-04-03 00:59:26,835 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7838e6068/e778e8ba1fdd4eba8e4e7cdd0a52c6d9/FLAGf07c4b9a0 [2023-04-03 00:59:26,849 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7838e6068/e778e8ba1fdd4eba8e4e7cdd0a52c6d9 [2023-04-03 00:59:26,851 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-03 00:59:26,852 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-03 00:59:26,856 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-03 00:59:26,856 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-03 00:59:26,859 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-03 00:59:26,859 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 12:59:26" (1/1) ... [2023-04-03 00:59:26,861 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5707e08e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 12:59:26, skipping insertion in model container [2023-04-03 00:59:26,861 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 12:59:26" (1/1) ... [2023-04-03 00:59:26,868 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-03 00:59:26,905 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-03 00:59:27,108 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_spec1_product51.cil.c[15256,15269] [2023-04-03 00:59:27,133 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 00:59:27,148 INFO L203 MainTranslator]: Completed pre-run [2023-04-03 00:59:27,226 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_spec1_product51.cil.c[15256,15269] [2023-04-03 00:59:27,232 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 00:59:27,250 INFO L208 MainTranslator]: Completed translation [2023-04-03 00:59:27,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 12:59:27 WrapperNode [2023-04-03 00:59:27,251 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-03 00:59:27,252 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-03 00:59:27,252 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-03 00:59:27,252 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-03 00:59:27,263 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 12:59:27" (1/1) ... [2023-04-03 00:59:27,263 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 12:59:27" (1/1) ... [2023-04-03 00:59:27,281 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 12:59:27" (1/1) ... [2023-04-03 00:59:27,281 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 12:59:27" (1/1) ... [2023-04-03 00:59:27,300 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 12:59:27" (1/1) ... [2023-04-03 00:59:27,306 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 12:59:27" (1/1) ... [2023-04-03 00:59:27,310 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 12:59:27" (1/1) ... [2023-04-03 00:59:27,312 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 12:59:27" (1/1) ... [2023-04-03 00:59:27,317 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-03 00:59:27,318 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-03 00:59:27,318 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-03 00:59:27,318 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-03 00:59:27,319 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 12:59:27" (1/1) ... [2023-04-03 00:59:27,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 00:59:27,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 00:59:27,358 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 00:59:27,386 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 00:59:27,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-03 00:59:27,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-03 00:59:27,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2023-04-03 00:59:27,407 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-03 00:59:27,408 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2023-04-03 00:59:27,408 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-04-03 00:59:27,408 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2023-04-03 00:59:27,408 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2023-04-03 00:59:27,408 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2023-04-03 00:59:27,408 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2023-04-03 00:59:27,408 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2023-04-03 00:59:27,409 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2023-04-03 00:59:27,409 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2023-04-03 00:59:27,409 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2023-04-03 00:59:27,409 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2023-04-03 00:59:27,409 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2023-04-03 00:59:27,409 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2023-04-03 00:59:27,409 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2023-04-03 00:59:27,409 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2023-04-03 00:59:27,409 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2023-04-03 00:59:27,410 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2023-04-03 00:59:27,410 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2023-04-03 00:59:27,410 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2023-04-03 00:59:27,410 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-04-03 00:59:27,410 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2023-04-03 00:59:27,410 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2023-04-03 00:59:27,410 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2023-04-03 00:59:27,410 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2023-04-03 00:59:27,410 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2023-04-03 00:59:27,411 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-04-03 00:59:27,411 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2023-04-03 00:59:27,411 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2023-04-03 00:59:27,411 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2023-04-03 00:59:27,411 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-03 00:59:27,411 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2023-04-03 00:59:27,411 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2023-04-03 00:59:27,412 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2023-04-03 00:59:27,412 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2023-04-03 00:59:27,412 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2023-04-03 00:59:27,412 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2023-04-03 00:59:27,412 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2023-04-03 00:59:27,412 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2023-04-03 00:59:27,412 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-03 00:59:27,413 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-03 00:59:27,413 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-03 00:59:27,414 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-03 00:59:27,414 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-03 00:59:27,414 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2023-04-03 00:59:27,415 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2023-04-03 00:59:27,415 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2023-04-03 00:59:27,415 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2023-04-03 00:59:27,415 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-04-03 00:59:27,415 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-04-03 00:59:27,415 INFO L130 BoogieDeclarations]: Found specification of procedure test [2023-04-03 00:59:27,416 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2023-04-03 00:59:27,416 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2023-04-03 00:59:27,416 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2023-04-03 00:59:27,416 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2023-04-03 00:59:27,416 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2023-04-03 00:59:27,416 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2023-04-03 00:59:27,416 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2023-04-03 00:59:27,417 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2023-04-03 00:59:27,417 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2023-04-03 00:59:27,417 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2023-04-03 00:59:27,417 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2023-04-03 00:59:27,417 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2023-04-03 00:59:27,417 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2023-04-03 00:59:27,417 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2023-04-03 00:59:27,418 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2023-04-03 00:59:27,418 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2023-04-03 00:59:27,418 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-03 00:59:27,418 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-03 00:59:27,418 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2023-04-03 00:59:27,418 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-03 00:59:27,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-03 00:59:27,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-03 00:59:27,419 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-03 00:59:27,419 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2023-04-03 00:59:27,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-03 00:59:27,419 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2023-04-03 00:59:27,419 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2023-04-03 00:59:27,419 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-03 00:59:27,419 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2023-04-03 00:59:27,420 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2023-04-03 00:59:27,420 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2023-04-03 00:59:27,420 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-04-03 00:59:27,420 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2023-04-03 00:59:27,420 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2023-04-03 00:59:27,420 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2023-04-03 00:59:27,420 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2023-04-03 00:59:27,420 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2023-04-03 00:59:27,421 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2023-04-03 00:59:27,421 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2023-04-03 00:59:27,421 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-03 00:59:27,421 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2023-04-03 00:59:27,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-03 00:59:27,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-03 00:59:27,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-03 00:59:27,543 INFO L236 CfgBuilder]: Building ICFG [2023-04-03 00:59:27,546 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-03 00:59:28,066 INFO L277 CfgBuilder]: Performing block encoding [2023-04-03 00:59:28,169 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-03 00:59:28,169 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-04-03 00:59:28,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 12:59:28 BoogieIcfgContainer [2023-04-03 00:59:28,172 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-03 00:59:28,174 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-03 00:59:28,174 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-03 00:59:28,177 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-03 00:59:28,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.04 12:59:26" (1/3) ... [2023-04-03 00:59:28,178 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d42d8c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 12:59:28, skipping insertion in model container [2023-04-03 00:59:28,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 12:59:27" (2/3) ... [2023-04-03 00:59:28,178 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d42d8c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 12:59:28, skipping insertion in model container [2023-04-03 00:59:28,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 12:59:28" (3/3) ... [2023-04-03 00:59:28,180 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product51.cil.c [2023-04-03 00:59:28,193 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-03 00:59:28,193 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-03 00:59:28,240 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-03 00:59:28,246 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;@773b2446, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-03 00:59:28,246 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-03 00:59:28,250 INFO L276 IsEmpty]: Start isEmpty. Operand has 148 states, 68 states have (on average 1.2794117647058822) internal successors, (87), 82 states have internal predecessors, (87), 47 states have call successors, (47), 29 states have call predecessors, (47), 29 states have return successors, (47), 43 states have call predecessors, (47), 47 states have call successors, (47) [2023-04-03 00:59:28,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-04-03 00:59:28,260 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 00:59:28,260 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 00:59:28,261 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 00:59:28,265 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 00:59:28,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1902045066, now seen corresponding path program 1 times [2023-04-03 00:59:28,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 00:59:28,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782282363] [2023-04-03 00:59:28,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 00:59:28,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 00:59:28,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 00:59:28,531 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 00:59:28,532 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 00:59:28,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782282363] [2023-04-03 00:59:28,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782282363] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 00:59:28,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 00:59:28,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-04-03 00:59:28,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088697840] [2023-04-03 00:59:28,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 00:59:28,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-04-03 00:59:28,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 00:59:28,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-04-03 00:59:28,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-03 00:59:28,592 INFO L87 Difference]: Start difference. First operand has 148 states, 68 states have (on average 1.2794117647058822) internal successors, (87), 82 states have internal predecessors, (87), 47 states have call successors, (47), 29 states have call predecessors, (47), 29 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 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-04-03 00:59:28,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 00:59:28,660 INFO L93 Difference]: Finished difference Result 225 states and 274 transitions. [2023-04-03 00:59:28,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-04-03 00:59:28,662 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 42 [2023-04-03 00:59:28,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 00:59:28,670 INFO L225 Difference]: With dead ends: 225 [2023-04-03 00:59:28,670 INFO L226 Difference]: Without dead ends: 113 [2023-04-03 00:59:28,674 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 00:59:28,677 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-03 00:59:28,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 125 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-03 00:59:28,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2023-04-03 00:59:28,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2023-04-03 00:59:28,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 58 states have (on average 1.2413793103448276) internal successors, (72), 69 states have internal predecessors, (72), 32 states have call successors, (32), 27 states have call predecessors, (32), 22 states have return successors, (27), 23 states have call predecessors, (27), 27 states have call successors, (27) [2023-04-03 00:59:28,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 131 transitions. [2023-04-03 00:59:28,740 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 131 transitions. Word has length 42 [2023-04-03 00:59:28,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 00:59:28,741 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 131 transitions. [2023-04-03 00:59:28,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-04-03 00:59:28,741 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 131 transitions. [2023-04-03 00:59:28,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-04-03 00:59:28,748 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 00:59:28,748 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 00:59:28,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-03 00:59:28,748 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 00:59:28,749 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 00:59:28,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1961063711, now seen corresponding path program 1 times [2023-04-03 00:59:28,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 00:59:28,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133706833] [2023-04-03 00:59:28,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 00:59:28,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 00:59:28,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 00:59:28,888 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 00:59:28,888 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 00:59:28,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133706833] [2023-04-03 00:59:28,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133706833] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 00:59:28,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 00:59:28,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 00:59:28,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211731475] [2023-04-03 00:59:28,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 00:59:28,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 00:59:28,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 00:59:28,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 00:59:28,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 00:59:28,893 INFO L87 Difference]: Start difference. First operand 113 states and 131 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-04-03 00:59:28,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 00:59:28,964 INFO L93 Difference]: Finished difference Result 176 states and 202 transitions. [2023-04-03 00:59:28,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 00:59:28,966 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 43 [2023-04-03 00:59:28,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 00:59:28,968 INFO L225 Difference]: With dead ends: 176 [2023-04-03 00:59:28,968 INFO L226 Difference]: Without dead ends: 105 [2023-04-03 00:59:28,969 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 00:59:28,970 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 11 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-03 00:59:28,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 194 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-03 00:59:28,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2023-04-03 00:59:28,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2023-04-03 00:59:28,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 53 states have (on average 1.2452830188679245) internal successors, (66), 64 states have internal predecessors, (66), 29 states have call successors, (29), 26 states have call predecessors, (29), 22 states have return successors, (25), 21 states have call predecessors, (25), 25 states have call successors, (25) [2023-04-03 00:59:28,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 120 transitions. [2023-04-03 00:59:28,986 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 120 transitions. Word has length 43 [2023-04-03 00:59:28,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 00:59:28,987 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 120 transitions. [2023-04-03 00:59:28,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-04-03 00:59:28,989 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 120 transitions. [2023-04-03 00:59:28,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-04-03 00:59:28,992 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 00:59:28,992 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 00:59:28,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-03 00:59:28,993 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 00:59:28,993 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 00:59:28,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1083926084, now seen corresponding path program 1 times [2023-04-03 00:59:28,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 00:59:28,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516464807] [2023-04-03 00:59:28,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 00:59:28,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 00:59:29,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 00:59:29,249 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 00:59:29,249 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 00:59:29,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516464807] [2023-04-03 00:59:29,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516464807] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 00:59:29,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 00:59:29,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-03 00:59:29,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066266438] [2023-04-03 00:59:29,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 00:59:29,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-03 00:59:29,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 00:59:29,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-03 00:59:29,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-04-03 00:59:29,252 INFO L87 Difference]: Start difference. First operand 105 states and 120 transitions. Second operand has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 4 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-04-03 00:59:29,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 00:59:29,497 INFO L93 Difference]: Finished difference Result 315 states and 373 transitions. [2023-04-03 00:59:29,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-03 00:59:29,498 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 4 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 46 [2023-04-03 00:59:29,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 00:59:29,500 INFO L225 Difference]: With dead ends: 315 [2023-04-03 00:59:29,501 INFO L226 Difference]: Without dead ends: 232 [2023-04-03 00:59:29,502 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 00:59:29,503 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 245 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-03 00:59:29,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 459 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-03 00:59:29,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2023-04-03 00:59:29,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 224. [2023-04-03 00:59:29,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 119 states have (on average 1.2773109243697478) internal successors, (152), 141 states have internal predecessors, (152), 58 states have call successors, (58), 52 states have call predecessors, (58), 46 states have return successors, (55), 42 states have call predecessors, (55), 54 states have call successors, (55) [2023-04-03 00:59:29,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 265 transitions. [2023-04-03 00:59:29,531 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 265 transitions. Word has length 46 [2023-04-03 00:59:29,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 00:59:29,531 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 265 transitions. [2023-04-03 00:59:29,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 4 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-04-03 00:59:29,531 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 265 transitions. [2023-04-03 00:59:29,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-04-03 00:59:29,533 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 00:59:29,533 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 00:59:29,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-03 00:59:29,533 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 00:59:29,534 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 00:59:29,534 INFO L85 PathProgramCache]: Analyzing trace with hash -317874271, now seen corresponding path program 1 times [2023-04-03 00:59:29,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 00:59:29,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759139418] [2023-04-03 00:59:29,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 00:59:29,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 00:59:29,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 00:59:29,734 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 00:59:29,735 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 00:59:29,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759139418] [2023-04-03 00:59:29,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759139418] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 00:59:29,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 00:59:29,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-03 00:59:29,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863114552] [2023-04-03 00:59:29,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 00:59:29,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-03 00:59:29,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 00:59:29,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-03 00:59:29,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-03 00:59:29,739 INFO L87 Difference]: Start difference. First operand 224 states and 265 transitions. Second operand has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 3 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-04-03 00:59:30,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 00:59:30,134 INFO L93 Difference]: Finished difference Result 584 states and 756 transitions. [2023-04-03 00:59:30,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-03 00:59:30,134 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), 3 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 51 [2023-04-03 00:59:30,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 00:59:30,139 INFO L225 Difference]: With dead ends: 584 [2023-04-03 00:59:30,140 INFO L226 Difference]: Without dead ends: 382 [2023-04-03 00:59:30,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2023-04-03 00:59:30,143 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 137 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-03 00:59:30,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 274 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-03 00:59:30,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2023-04-03 00:59:30,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 332. [2023-04-03 00:59:30,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 184 states have (on average 1.2173913043478262) internal successors, (224), 202 states have internal predecessors, (224), 74 states have call successors, (74), 68 states have call predecessors, (74), 73 states have return successors, (96), 73 states have call predecessors, (96), 70 states have call successors, (96) [2023-04-03 00:59:30,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 394 transitions. [2023-04-03 00:59:30,229 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 394 transitions. Word has length 51 [2023-04-03 00:59:30,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 00:59:30,230 INFO L495 AbstractCegarLoop]: Abstraction has 332 states and 394 transitions. [2023-04-03 00:59:30,230 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), 3 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-04-03 00:59:30,230 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 394 transitions. [2023-04-03 00:59:30,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-04-03 00:59:30,235 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 00:59:30,235 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, 1, 1] [2023-04-03 00:59:30,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-03 00:59:30,236 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 00:59:30,236 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 00:59:30,236 INFO L85 PathProgramCache]: Analyzing trace with hash 155407073, now seen corresponding path program 1 times [2023-04-03 00:59:30,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 00:59:30,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687319283] [2023-04-03 00:59:30,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 00:59:30,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 00:59:30,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 00:59:30,610 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 00:59:30,611 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 00:59:30,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687319283] [2023-04-03 00:59:30,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687319283] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 00:59:30,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 00:59:30,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 00:59:30,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470098581] [2023-04-03 00:59:30,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 00:59:30,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 00:59:30,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 00:59:30,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 00:59:30,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-04-03 00:59:30,615 INFO L87 Difference]: Start difference. First operand 332 states and 394 transitions. Second operand has 12 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 4 states have call successors, (18), 3 states have call predecessors, (18), 6 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) [2023-04-03 00:59:31,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 00:59:31,049 INFO L93 Difference]: Finished difference Result 1010 states and 1217 transitions. [2023-04-03 00:59:31,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-03 00:59:31,050 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 4 states have call successors, (18), 3 states have call predecessors, (18), 6 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) Word has length 68 [2023-04-03 00:59:31,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 00:59:31,054 INFO L225 Difference]: With dead ends: 1010 [2023-04-03 00:59:31,054 INFO L226 Difference]: Without dead ends: 700 [2023-04-03 00:59:31,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2023-04-03 00:59:31,056 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 262 mSDsluCounter, 709 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 869 SdHoareTripleChecker+Invalid, 622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-03 00:59:31,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [267 Valid, 869 Invalid, 622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 528 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-03 00:59:31,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2023-04-03 00:59:31,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 682. [2023-04-03 00:59:31,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 682 states, 400 states have (on average 1.2225) internal successors, (489), 432 states have internal predecessors, (489), 141 states have call successors, (141), 137 states have call predecessors, (141), 140 states have return successors, (181), 139 states have call predecessors, (181), 137 states have call successors, (181) [2023-04-03 00:59:31,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 811 transitions. [2023-04-03 00:59:31,126 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 811 transitions. Word has length 68 [2023-04-03 00:59:31,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 00:59:31,127 INFO L495 AbstractCegarLoop]: Abstraction has 682 states and 811 transitions. [2023-04-03 00:59:31,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 4 states have call successors, (18), 3 states have call predecessors, (18), 6 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) [2023-04-03 00:59:31,127 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 811 transitions. [2023-04-03 00:59:31,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-04-03 00:59:31,130 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 00:59:31,130 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, 1, 1, 1, 1, 1] [2023-04-03 00:59:31,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-03 00:59:31,130 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 00:59:31,131 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 00:59:31,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1177513100, now seen corresponding path program 1 times [2023-04-03 00:59:31,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 00:59:31,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415313588] [2023-04-03 00:59:31,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 00:59:31,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 00:59:31,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 00:59:31,303 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 00:59:31,303 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 00:59:31,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415313588] [2023-04-03 00:59:31,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415313588] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 00:59:31,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 00:59:31,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-03 00:59:31,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867139819] [2023-04-03 00:59:31,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 00:59:31,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-03 00:59:31,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 00:59:31,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-03 00:59:31,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-03 00:59:31,305 INFO L87 Difference]: Start difference. First operand 682 states and 811 transitions. Second operand has 6 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2023-04-03 00:59:31,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 00:59:31,495 INFO L93 Difference]: Finished difference Result 1947 states and 2397 transitions. [2023-04-03 00:59:31,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-03 00:59:31,496 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) Word has length 71 [2023-04-03 00:59:31,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 00:59:31,503 INFO L225 Difference]: With dead ends: 1947 [2023-04-03 00:59:31,503 INFO L226 Difference]: Without dead ends: 1287 [2023-04-03 00:59:31,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 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 00:59:31,506 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 82 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 00:59:31,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 445 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 00:59:31,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1287 states. [2023-04-03 00:59:31,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1287 to 1235. [2023-04-03 00:59:31,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1235 states, 738 states have (on average 1.2181571815718157) internal successors, (899), 788 states have internal predecessors, (899), 247 states have call successors, (247), 239 states have call predecessors, (247), 249 states have return successors, (331), 247 states have call predecessors, (331), 243 states have call successors, (331) [2023-04-03 00:59:31,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1235 states to 1235 states and 1477 transitions. [2023-04-03 00:59:31,608 INFO L78 Accepts]: Start accepts. Automaton has 1235 states and 1477 transitions. Word has length 71 [2023-04-03 00:59:31,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 00:59:31,609 INFO L495 AbstractCegarLoop]: Abstraction has 1235 states and 1477 transitions. [2023-04-03 00:59:31,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2023-04-03 00:59:31,609 INFO L276 IsEmpty]: Start isEmpty. Operand 1235 states and 1477 transitions. [2023-04-03 00:59:31,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-04-03 00:59:31,611 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 00:59:31,611 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 00:59:31,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-03 00:59:31,612 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 00:59:31,612 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 00:59:31,612 INFO L85 PathProgramCache]: Analyzing trace with hash -788668722, now seen corresponding path program 1 times [2023-04-03 00:59:31,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 00:59:31,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922852831] [2023-04-03 00:59:31,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 00:59:31,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 00:59:31,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-04-03 00:59:31,627 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-04-03 00:59:31,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-04-03 00:59:31,669 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-04-03 00:59:31,669 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-04-03 00:59:31,670 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-03 00:59:31,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-03 00:59:31,674 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-04-03 00:59:31,677 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-03 00:59:31,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.04 12:59:31 BoogieIcfgContainer [2023-04-03 00:59:31,717 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-03 00:59:31,718 INFO L158 Benchmark]: Toolchain (without parser) took 4865.43ms. Allocated memory is still 300.9MB. Free memory was 242.8MB in the beginning and 123.6MB in the end (delta: 119.2MB). Peak memory consumption was 120.5MB. Max. memory is 8.0GB. [2023-04-03 00:59:31,718 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 191.9MB. Free memory is still 141.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-04-03 00:59:31,718 INFO L158 Benchmark]: CACSL2BoogieTranslator took 395.25ms. Allocated memory is still 300.9MB. Free memory was 242.5MB in the beginning and 223.7MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2023-04-03 00:59:31,718 INFO L158 Benchmark]: Boogie Preprocessor took 65.45ms. Allocated memory is still 300.9MB. Free memory was 223.7MB in the beginning and 220.5MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-04-03 00:59:31,719 INFO L158 Benchmark]: RCFGBuilder took 854.04ms. Allocated memory is still 300.9MB. Free memory was 220.0MB in the beginning and 159.2MB in the end (delta: 60.8MB). Peak memory consumption was 60.8MB. Max. memory is 8.0GB. [2023-04-03 00:59:31,719 INFO L158 Benchmark]: TraceAbstraction took 3542.97ms. Allocated memory is still 300.9MB. Free memory was 158.1MB in the beginning and 123.6MB in the end (delta: 34.6MB). Peak memory consumption was 35.6MB. Max. memory is 8.0GB. [2023-04-03 00:59:31,720 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 191.9MB. Free memory is still 141.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 395.25ms. Allocated memory is still 300.9MB. Free memory was 242.5MB in the beginning and 223.7MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * Boogie Preprocessor took 65.45ms. Allocated memory is still 300.9MB. Free memory was 223.7MB in the beginning and 220.5MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 854.04ms. Allocated memory is still 300.9MB. Free memory was 220.0MB in the beginning and 159.2MB in the end (delta: 60.8MB). Peak memory consumption was 60.8MB. Max. memory is 8.0GB. * TraceAbstraction took 3542.97ms. Allocated memory is still 300.9MB. Free memory was 158.1MB in the beginning and 123.6MB in the end (delta: 34.6MB). Peak memory consumption was 35.6MB. 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: 714]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L131] int pumpRunning = 0; [L132] int systemActive = 1; [L513] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L783] int cleanupTimeShifts = 4; [L880] int waterLevel = 1; [L881] int methaneLevelCritical = 0; [L856] int retValue_acc ; [L857] 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] [L861] 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] [L862] 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] [L863] 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] [L748] int retValue_acc ; [L751] retValue_acc = 1 [L752] return (retValue_acc); [L863] 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] [L863] tmp = valid_product() [L865] 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] [L867] 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] [L868] 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] [L850] 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] [L56] int splverifierCounter ; [L57] int tmp ; [L58] int tmp___0 ; [L59] int tmp___1 ; [L60] int tmp___2 ; [L63] 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] [L65] 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] [L67] COND TRUE splverifierCounter < 4 [L73] tmp = __VERIFIER_nondet_int() [L75] 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] [L77] 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] [L898] COND TRUE waterLevel < 2 [L899] waterLevel = waterLevel + 1 [L77] 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] [L83] tmp___0 = __VERIFIER_nondet_int() [L85] COND TRUE \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=-1, waterLevel=2] [L87] CALL changeMethaneLevel() 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] [L910] COND FALSE !(\read(methaneLevelCritical)) [L913] methaneLevelCritical = 1 [L87] RET changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=-1, waterLevel=2] [L93] tmp___2 = __VERIFIER_nondet_int() [L95] COND TRUE \read(tmp___2) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=-1, tmp___2=1, waterLevel=2] [L110] CALL timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L139] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L146] COND TRUE \read(systemActive) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L148] CALL processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L194] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L197] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L212] CALL processEnvironment__wrappee__highWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L168] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L171] COND TRUE ! pumpRunning VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L173] CALL, EXPR isHighWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L291] int retValue_acc ; [L292] int tmp ; [L293] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L297] CALL, EXPR isHighWaterSensorDry() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L960] int retValue_acc ; [L963] COND FALSE !(waterLevel < 2) [L967] retValue_acc = 0 [L968] return (retValue_acc); [L297] RET, EXPR isHighWaterSensorDry() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterSensorDry()=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L297] tmp = isHighWaterSensorDry() [L299] COND FALSE !(\read(tmp)) [L302] tmp___0 = 1 [L304] retValue_acc = tmp___0 [L305] return (retValue_acc); [L173] RET, EXPR isHighWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterLevel()=1, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L173] tmp = isHighWaterLevel() [L175] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=1, waterLevel=2] [L177] CALL activatePump() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L222] pumpRunning = 1 [L177] RET activatePump() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L212] RET processEnvironment__wrappee__highWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L148] RET processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L154] CALL __utac_acc__Specification1_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L758] int tmp ; [L759] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L763] CALL, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L919] int retValue_acc ; [L922] retValue_acc = methaneLevelCritical [L923] return (retValue_acc); [L763] RET, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L763] tmp = isMethaneLevelCritical() [L765] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L767] CALL, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L246] int retValue_acc ; [L249] retValue_acc = pumpRunning [L250] return (retValue_acc); [L767] RET, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isPumpRunning()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L767] tmp___0 = isPumpRunning() [L769] COND TRUE \read(tmp___0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L771] CALL __automaton_fail() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L714] reach_error() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 42 procedures, 191 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.4s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 759 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 737 mSDsluCounter, 2366 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1693 mSDsCounter, 230 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1328 IncrementalHoareTripleChecker+Invalid, 1558 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 230 mSolverCounterUnsat, 673 mSDtfsCounter, 1328 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 72 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1235occurred in iteration=6, InterpolantAutomatonStates: 47, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 6 MinimizatonAttempts, 128 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 395 NumberOfCodeBlocks, 395 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 315 ConstructedInterpolants, 0 QuantifiedInterpolants, 607 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 00:59:31,740 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...