/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain OctagonDomain -i ../sv-benchmarks/c/product-lines/minepump_spec3_product23.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 05:57:23,030 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 05:57:23,032 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 05:57:23,064 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 05:57:23,065 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 05:57:23,067 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 05:57:23,070 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 05:57:23,072 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 05:57:23,074 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 05:57:23,078 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 05:57:23,080 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 05:57:23,081 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 05:57:23,082 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 05:57:23,084 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 05:57:23,084 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 05:57:23,086 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 05:57:23,086 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 05:57:23,087 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 05:57:23,089 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 05:57:23,093 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 05:57:23,094 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 05:57:23,095 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 05:57:23,096 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 05:57:23,097 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 05:57:23,099 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 05:57:23,099 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 05:57:23,099 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 05:57:23,100 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 05:57:23,100 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 05:57:23,100 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 05:57:23,101 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 05:57:23,101 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 05:57:23,102 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 05:57:23,102 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 05:57:23,103 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 05:57:23,103 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 05:57:23,104 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 05:57:23,104 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 05:57:23,104 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 05:57:23,105 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 05:57:23,105 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 05:57:23,106 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-01 05:57:23,136 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 05:57:23,136 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 05:57:23,137 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 05:57:23,137 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 05:57:23,138 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 05:57:23,138 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 05:57:23,138 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 05:57:23,138 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 05:57:23,138 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 05:57:23,139 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 05:57:23,139 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 05:57:23,139 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 05:57:23,140 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 05:57:23,140 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 05:57:23,140 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 05:57:23,140 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 05:57:23,140 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 05:57:23,141 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 05:57:23,141 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 05:57:23,141 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 05:57:23,141 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 05:57:23,142 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 05:57:23,142 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 05:57:23,142 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 05:57:23,142 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 05:57:23,142 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 05:57:23,143 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 05:57:23,143 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 05:57:23,143 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 05:57:23,143 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 05:57:23,143 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 05:57:23,144 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 05:57:23,144 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 05:57:23,144 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 05:57:23,144 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 05:57:23,144 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 05:57:23,144 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 05:57:23,144 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 05:57:23,145 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 05:57:23,145 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 05:57:23,145 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 05:57:23,145 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-01 05:57:23,388 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 05:57:23,406 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 05:57:23,408 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 05:57:23,409 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 05:57:23,410 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 05:57:23,411 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec3_product23.cil.c [2023-04-01 05:57:24,578 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 05:57:24,824 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 05:57:24,824 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product23.cil.c [2023-04-01 05:57:24,837 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2dfe10a1/261f5c1c8ded4ff3be8e4bdedde82665/FLAGcd3bea70d [2023-04-01 05:57:24,850 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2dfe10a1/261f5c1c8ded4ff3be8e4bdedde82665 [2023-04-01 05:57:24,852 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 05:57:24,853 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 05:57:24,854 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 05:57:24,854 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 05:57:24,857 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 05:57:24,858 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 05:57:24" (1/1) ... [2023-04-01 05:57:24,859 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@667a8358 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:57:24, skipping insertion in model container [2023-04-01 05:57:24,859 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 05:57:24" (1/1) ... [2023-04-01 05:57:24,866 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 05:57:24,902 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 05:57:25,086 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product23.cil.c[8087,8100] [2023-04-01 05:57:25,158 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 05:57:25,170 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 05:57:25,203 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product23.cil.c[8087,8100] [2023-04-01 05:57:25,230 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 05:57:25,256 INFO L208 MainTranslator]: Completed translation [2023-04-01 05:57:25,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:57:25 WrapperNode [2023-04-01 05:57:25,256 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 05:57:25,257 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 05:57:25,257 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 05:57:25,257 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 05:57:25,265 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:57:25" (1/1) ... [2023-04-01 05:57:25,266 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:57:25" (1/1) ... [2023-04-01 05:57:25,277 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:57:25" (1/1) ... [2023-04-01 05:57:25,278 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:57:25" (1/1) ... [2023-04-01 05:57:25,305 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:57:25" (1/1) ... [2023-04-01 05:57:25,316 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:57:25" (1/1) ... [2023-04-01 05:57:25,319 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:57:25" (1/1) ... [2023-04-01 05:57:25,321 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:57:25" (1/1) ... [2023-04-01 05:57:25,328 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 05:57:25,329 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 05:57:25,329 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 05:57:25,329 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 05:57:25,330 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:57:25" (1/1) ... [2023-04-01 05:57:25,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 05:57:25,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 05:57:25,368 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 05:57:25,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 05:57:25,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 05:57:25,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 05:57:25,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2023-04-01 05:57:25,397 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 05:57:25,397 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2023-04-01 05:57:25,397 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2023-04-01 05:57:25,397 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2023-04-01 05:57:25,398 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2023-04-01 05:57:25,398 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2023-04-01 05:57:25,398 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2023-04-01 05:57:25,398 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2023-04-01 05:57:25,398 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2023-04-01 05:57:25,398 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-04-01 05:57:25,398 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2023-04-01 05:57:25,398 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2023-04-01 05:57:25,398 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2023-04-01 05:57:25,399 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2023-04-01 05:57:25,399 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2023-04-01 05:57:25,399 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2023-04-01 05:57:25,399 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2023-04-01 05:57:25,399 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2023-04-01 05:57:25,399 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2023-04-01 05:57:25,399 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2023-04-01 05:57:25,399 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2023-04-01 05:57:25,399 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-04-01 05:57:25,400 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2023-04-01 05:57:25,400 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2023-04-01 05:57:25,400 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2023-04-01 05:57:25,400 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 05:57:25,400 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-04-01 05:57:25,400 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2023-04-01 05:57:25,400 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2023-04-01 05:57:25,400 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2023-04-01 05:57:25,401 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2023-04-01 05:57:25,401 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2023-04-01 05:57:25,401 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2023-04-01 05:57:25,401 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2023-04-01 05:57:25,401 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2023-04-01 05:57:25,401 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2023-04-01 05:57:25,401 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2023-04-01 05:57:25,401 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 05:57:25,402 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 05:57:25,402 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 05:57:25,402 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 05:57:25,402 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 05:57:25,402 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2023-04-01 05:57:25,402 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2023-04-01 05:57:25,402 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2023-04-01 05:57:25,402 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2023-04-01 05:57:25,403 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2023-04-01 05:57:25,403 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2023-04-01 05:57:25,403 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2023-04-01 05:57:25,403 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2023-04-01 05:57:25,403 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-04-01 05:57:25,403 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2023-04-01 05:57:25,403 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2023-04-01 05:57:25,403 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-04-01 05:57:25,403 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2023-04-01 05:57:25,404 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2023-04-01 05:57:25,404 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2023-04-01 05:57:25,404 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2023-04-01 05:57:25,404 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2023-04-01 05:57:25,404 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2023-04-01 05:57:25,404 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2023-04-01 05:57:25,404 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2023-04-01 05:57:25,404 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2023-04-01 05:57:25,404 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-04-01 05:57:25,404 INFO L130 BoogieDeclarations]: Found specification of procedure test [2023-04-01 05:57:25,405 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2023-04-01 05:57:25,405 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2023-04-01 05:57:25,405 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2023-04-01 05:57:25,405 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2023-04-01 05:57:25,405 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2023-04-01 05:57:25,405 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2023-04-01 05:57:25,405 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 05:57:25,405 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-01 05:57:25,405 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-01 05:57:25,406 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2023-04-01 05:57:25,406 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-01 05:57:25,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-01 05:57:25,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 05:57:25,406 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-01 05:57:25,406 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2023-04-01 05:57:25,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 05:57:25,406 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2023-04-01 05:57:25,406 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2023-04-01 05:57:25,406 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 05:57:25,407 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2023-04-01 05:57:25,407 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2023-04-01 05:57:25,407 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2023-04-01 05:57:25,407 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2023-04-01 05:57:25,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 05:57:25,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 05:57:25,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 05:57:25,572 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 05:57:25,574 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 05:57:26,136 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 05:57:26,272 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 05:57:26,273 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-04-01 05:57:26,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 05:57:26 BoogieIcfgContainer [2023-04-01 05:57:26,276 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 05:57:26,278 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 05:57:26,278 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 05:57:26,281 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 05:57:26,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 05:57:24" (1/3) ... [2023-04-01 05:57:26,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44b1edee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 05:57:26, skipping insertion in model container [2023-04-01 05:57:26,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:57:25" (2/3) ... [2023-04-01 05:57:26,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44b1edee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 05:57:26, skipping insertion in model container [2023-04-01 05:57:26,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 05:57:26" (3/3) ... [2023-04-01 05:57:26,284 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product23.cil.c [2023-04-01 05:57:26,300 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 05:57:26,301 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 05:57:26,356 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 05:57:26,361 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;@26fddad6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 05:57:26,362 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 05:57:26,365 INFO L276 IsEmpty]: Start isEmpty. Operand has 147 states, 68 states have (on average 1.2941176470588236) internal successors, (88), 82 states have internal predecessors, (88), 48 states have call successors, (48), 28 states have call predecessors, (48), 28 states have return successors, (48), 44 states have call predecessors, (48), 48 states have call successors, (48) [2023-04-01 05:57:26,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-04-01 05:57:26,372 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:57:26,373 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:57:26,373 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:57:26,379 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:57:26,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1657921707, now seen corresponding path program 1 times [2023-04-01 05:57:26,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:57:26,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090779534] [2023-04-01 05:57:26,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:57:26,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:57:26,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:57:26,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 05:57:26,621 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:57:26,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090779534] [2023-04-01 05:57:26,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090779534] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 05:57:26,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 05:57:26,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-04-01 05:57:26,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685689058] [2023-04-01 05:57:26,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 05:57:26,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-04-01 05:57:26,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:57:26,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-04-01 05:57:26,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-01 05:57:26,652 INFO L87 Difference]: Start difference. First operand has 147 states, 68 states have (on average 1.2941176470588236) internal successors, (88), 82 states have internal predecessors, (88), 48 states have call successors, (48), 28 states have call predecessors, (48), 28 states have return successors, (48), 44 states have call predecessors, (48), 48 states have call successors, (48) Second operand has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-04-01 05:57:26,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:57:26,738 INFO L93 Difference]: Finished difference Result 227 states and 282 transitions. [2023-04-01 05:57:26,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-04-01 05:57:26,744 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 47 [2023-04-01 05:57:26,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:57:26,754 INFO L225 Difference]: With dead ends: 227 [2023-04-01 05:57:26,754 INFO L226 Difference]: Without dead ends: 114 [2023-04-01 05:57:26,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-01 05:57:26,762 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 05:57:26,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 130 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 05:57:26,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2023-04-01 05:57:26,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2023-04-01 05:57:26,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 59 states have (on average 1.2542372881355932) internal successors, (74), 70 states have internal predecessors, (74), 33 states have call successors, (33), 26 states have call predecessors, (33), 21 states have return successors, (28), 24 states have call predecessors, (28), 28 states have call successors, (28) [2023-04-01 05:57:26,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 135 transitions. [2023-04-01 05:57:26,800 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 135 transitions. Word has length 47 [2023-04-01 05:57:26,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:57:26,801 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 135 transitions. [2023-04-01 05:57:26,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-04-01 05:57:26,801 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 135 transitions. [2023-04-01 05:57:26,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-04-01 05:57:26,804 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:57:26,804 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:57:26,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 05:57:26,804 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:57:26,805 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:57:26,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1338085535, now seen corresponding path program 1 times [2023-04-01 05:57:26,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:57:26,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133231621] [2023-04-01 05:57:26,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:57:26,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:57:26,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:57:26,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 05:57:26,893 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:57:26,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133231621] [2023-04-01 05:57:26,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133231621] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 05:57:26,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 05:57:26,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 05:57:26,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125908839] [2023-04-01 05:57:26,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 05:57:26,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 05:57:26,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:57:26,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 05:57:26,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 05:57:26,896 INFO L87 Difference]: Start difference. First operand 114 states and 135 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-04-01 05:57:26,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:57:26,964 INFO L93 Difference]: Finished difference Result 178 states and 210 transitions. [2023-04-01 05:57:26,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 05:57:26,965 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 48 [2023-04-01 05:57:26,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:57:26,967 INFO L225 Difference]: With dead ends: 178 [2023-04-01 05:57:26,967 INFO L226 Difference]: Without dead ends: 106 [2023-04-01 05:57:26,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 05:57:26,970 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 11 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 05:57:26,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 204 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 05:57:26,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2023-04-01 05:57:26,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2023-04-01 05:57:26,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 54 states have (on average 1.2592592592592593) internal successors, (68), 65 states have internal predecessors, (68), 30 states have call successors, (30), 25 states have call predecessors, (30), 21 states have return successors, (26), 22 states have call predecessors, (26), 26 states have call successors, (26) [2023-04-01 05:57:26,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 124 transitions. [2023-04-01 05:57:26,983 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 124 transitions. Word has length 48 [2023-04-01 05:57:26,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:57:26,983 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 124 transitions. [2023-04-01 05:57:26,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-04-01 05:57:26,984 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 124 transitions. [2023-04-01 05:57:26,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-04-01 05:57:26,985 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:57:26,985 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] [2023-04-01 05:57:26,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 05:57:26,986 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:57:26,986 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:57:26,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1318019467, now seen corresponding path program 1 times [2023-04-01 05:57:26,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:57:26,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785766465] [2023-04-01 05:57:26,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:57:26,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:57:27,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:57:27,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 05:57:27,170 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:57:27,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785766465] [2023-04-01 05:57:27,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785766465] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 05:57:27,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 05:57:27,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 05:57:27,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482611738] [2023-04-01 05:57:27,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 05:57:27,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 05:57:27,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:57:27,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 05:57:27,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-04-01 05:57:27,173 INFO L87 Difference]: Start difference. First operand 106 states and 124 transitions. Second operand has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 4 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-04-01 05:57:27,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:57:27,542 INFO L93 Difference]: Finished difference Result 323 states and 391 transitions. [2023-04-01 05:57:27,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 05:57:27,543 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 4 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 51 [2023-04-01 05:57:27,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:57:27,545 INFO L225 Difference]: With dead ends: 323 [2023-04-01 05:57:27,545 INFO L226 Difference]: Without dead ends: 239 [2023-04-01 05:57:27,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-04-01 05:57:27,547 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 255 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-01 05:57:27,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [256 Valid, 503 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-01 05:57:27,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2023-04-01 05:57:27,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 231. [2023-04-01 05:57:27,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 124 states have (on average 1.2903225806451613) internal successors, (160), 146 states have internal predecessors, (160), 61 states have call successors, (61), 51 states have call predecessors, (61), 45 states have return successors, (58), 45 states have call predecessors, (58), 57 states have call successors, (58) [2023-04-01 05:57:27,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 279 transitions. [2023-04-01 05:57:27,570 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 279 transitions. Word has length 51 [2023-04-01 05:57:27,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:57:27,570 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 279 transitions. [2023-04-01 05:57:27,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 4 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-04-01 05:57:27,571 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 279 transitions. [2023-04-01 05:57:27,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-04-01 05:57:27,573 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:57:27,573 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:57:27,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 05:57:27,573 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:57:27,574 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:57:27,574 INFO L85 PathProgramCache]: Analyzing trace with hash -623693792, now seen corresponding path program 1 times [2023-04-01 05:57:27,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:57:27,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620354361] [2023-04-01 05:57:27,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:57:27,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:57:27,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:57:27,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 05:57:27,712 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:57:27,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620354361] [2023-04-01 05:57:27,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620354361] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 05:57:27,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 05:57:27,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 05:57:27,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580373107] [2023-04-01 05:57:27,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 05:57:27,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-01 05:57:27,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:57:27,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-01 05:57:27,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-01 05:57:27,714 INFO L87 Difference]: Start difference. First operand 231 states and 279 transitions. Second operand has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-04-01 05:57:27,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:57:27,885 INFO L93 Difference]: Finished difference Result 631 states and 790 transitions. [2023-04-01 05:57:27,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 05:57:27,886 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 56 [2023-04-01 05:57:27,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:57:27,898 INFO L225 Difference]: With dead ends: 631 [2023-04-01 05:57:27,898 INFO L226 Difference]: Without dead ends: 422 [2023-04-01 05:57:27,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-04-01 05:57:27,901 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 81 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 05:57:27,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 475 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 05:57:27,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2023-04-01 05:57:27,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 404. [2023-04-01 05:57:27,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 223 states have (on average 1.295964125560538) internal successors, (289), 260 states have internal predecessors, (289), 104 states have call successors, (104), 84 states have call predecessors, (104), 76 states have return successors, (106), 76 states have call predecessors, (106), 100 states have call successors, (106) [2023-04-01 05:57:27,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 499 transitions. [2023-04-01 05:57:27,968 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 499 transitions. Word has length 56 [2023-04-01 05:57:27,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:57:27,969 INFO L495 AbstractCegarLoop]: Abstraction has 404 states and 499 transitions. [2023-04-01 05:57:27,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-04-01 05:57:27,971 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 499 transitions. [2023-04-01 05:57:27,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-04-01 05:57:27,976 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:57:27,976 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:57:27,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 05:57:27,977 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:57:27,977 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:57:27,977 INFO L85 PathProgramCache]: Analyzing trace with hash -302096029, now seen corresponding path program 1 times [2023-04-01 05:57:27,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:57:27,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665080695] [2023-04-01 05:57:27,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:57:27,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:57:28,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-04-01 05:57:28,006 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-04-01 05:57:28,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-04-01 05:57:28,064 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-04-01 05:57:28,064 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-04-01 05:57:28,065 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-01 05:57:28,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-01 05:57:28,068 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-04-01 05:57:28,071 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-01 05:57:28,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.04 05:57:28 BoogieIcfgContainer [2023-04-01 05:57:28,108 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-01 05:57:28,109 INFO L158 Benchmark]: Toolchain (without parser) took 3255.35ms. Allocated memory was 194.0MB in the beginning and 232.8MB in the end (delta: 38.8MB). Free memory was 143.8MB in the beginning and 181.2MB in the end (delta: -37.4MB). Peak memory consumption was 1.7MB. Max. memory is 8.0GB. [2023-04-01 05:57:28,109 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 194.0MB. Free memory was 142.7MB in the beginning and 142.6MB in the end (delta: 155.2kB). There was no memory consumed. Max. memory is 8.0GB. [2023-04-01 05:57:28,110 INFO L158 Benchmark]: CACSL2BoogieTranslator took 402.10ms. Allocated memory is still 194.0MB. Free memory was 143.6MB in the beginning and 125.3MB in the end (delta: 18.3MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2023-04-01 05:57:28,110 INFO L158 Benchmark]: Boogie Preprocessor took 71.32ms. Allocated memory is still 194.0MB. Free memory was 125.3MB in the beginning and 121.8MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-04-01 05:57:28,111 INFO L158 Benchmark]: RCFGBuilder took 946.86ms. Allocated memory was 194.0MB in the beginning and 232.8MB in the end (delta: 38.8MB). Free memory was 121.8MB in the beginning and 155.2MB in the end (delta: -33.4MB). Peak memory consumption was 21.9MB. Max. memory is 8.0GB. [2023-04-01 05:57:28,111 INFO L158 Benchmark]: TraceAbstraction took 1830.10ms. Allocated memory is still 232.8MB. Free memory was 154.6MB in the beginning and 181.2MB in the end (delta: -26.5MB). There was no memory consumed. Max. memory is 8.0GB. [2023-04-01 05:57:28,113 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 194.0MB. Free memory was 142.7MB in the beginning and 142.6MB in the end (delta: 155.2kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 402.10ms. Allocated memory is still 194.0MB. Free memory was 143.6MB in the beginning and 125.3MB in the end (delta: 18.3MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * Boogie Preprocessor took 71.32ms. Allocated memory is still 194.0MB. Free memory was 125.3MB in the beginning and 121.8MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 946.86ms. Allocated memory was 194.0MB in the beginning and 232.8MB in the end (delta: 38.8MB). Free memory was 121.8MB in the beginning and 155.2MB in the end (delta: -33.4MB). Peak memory consumption was 21.9MB. Max. memory is 8.0GB. * TraceAbstraction took 1830.10ms. Allocated memory is still 232.8MB. Free memory was 154.6MB in the beginning and 181.2MB in the end (delta: -26.5MB). There was no memory consumed. 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: 551]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L57] int waterLevel = 1; [L58] int methaneLevelCritical = 0; [L187] int pumpRunning = 0; [L188] int systemActive = 1; [L448] int cleanupTimeShifts = 4; [L725] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L524] int retValue_acc ; [L525] 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] [L529] 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] [L530] 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] [L531] 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] [L948] int retValue_acc ; [L951] retValue_acc = 1 [L952] return (retValue_acc); [L531] 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] [L531] tmp = valid_product() [L533] 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] [L535] 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] [L536] 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] [L515] 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] [L382] int splverifierCounter ; [L383] int tmp ; [L384] int tmp___0 ; [L385] int tmp___1 ; [L386] int tmp___2 ; [L389] 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] [L391] 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] [L393] COND TRUE splverifierCounter < 4 [L399] tmp = __VERIFIER_nondet_int() [L401] 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] [L403] 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] [L75] COND TRUE waterLevel < 2 [L76] waterLevel = waterLevel + 1 [L403] 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] [L409] tmp___0 = __VERIFIER_nondet_int() [L411] COND FALSE !(\read(tmp___0)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, waterLevel=2] [L419] tmp___2 = __VERIFIER_nondet_int() [L421] COND FALSE !(\read(tmp___2)) [L425] tmp___1 = __VERIFIER_nondet_int() [L427] COND TRUE \read(tmp___1) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___1=1, tmp___2=0, waterLevel=2] [L429] CALL stopSystem() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L368] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L375] systemActive = 0 [L429] RET stopSystem() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=0, tmp=1, tmp___0=0, tmp___1=1, tmp___2=0, waterLevel=2] [L436] CALL timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L194] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L201] COND FALSE !(\read(systemActive)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L209] CALL __utac_acc__Specification3_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L149] int tmp ; [L150] int tmp___0 ; [L151] int tmp___1 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L155] CALL, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L96] int retValue_acc ; [L99] retValue_acc = methaneLevelCritical [L100] return (retValue_acc); [L155] RET, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=0, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L155] tmp = isMethaneLevelCritical() [L157] COND FALSE !(\read(tmp)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, tmp=0, waterLevel=2] [L161] CALL, EXPR getWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L128] int retValue_acc ; [L131] retValue_acc = waterLevel [L132] return (retValue_acc); [L161] RET, EXPR getWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, getWaterLevel()=2, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, tmp=0, waterLevel=2] [L161] tmp___0 = getWaterLevel() [L163] COND TRUE tmp___0 == 2 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, tmp=0, tmp___0=2, waterLevel=2] [L165] CALL, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L301] int retValue_acc ; [L304] retValue_acc = pumpRunning [L305] return (retValue_acc); [L165] RET, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isPumpRunning()=0, methaneLevelCritical=0, pumpRunning=0, systemActive=0, tmp=0, tmp___0=2, waterLevel=2] [L165] tmp___1 = isPumpRunning() [L167] COND FALSE !(\read(tmp___1)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, tmp=0, tmp___0=2, tmp___1=0, waterLevel=2] [L171] CALL __automaton_fail() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L551] reach_error() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 188 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.7s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 353 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 347 mSDsluCounter, 1312 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 832 mSDsCounter, 50 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 426 IncrementalHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 50 mSolverCounterUnsat, 480 mSDtfsCounter, 426 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=404occurred in iteration=4, InterpolantAutomatonStates: 19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 26 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 261 NumberOfCodeBlocks, 261 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 198 ConstructedInterpolants, 0 QuantifiedInterpolants, 328 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-04-01 05:57:28,145 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...