/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain EqDomain -i ../sv-benchmarks/c/product-lines/minepump_spec3_product39.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 12:03:30,764 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 12:03:30,767 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 12:03:30,805 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 12:03:30,805 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 12:03:30,806 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 12:03:30,807 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 12:03:30,809 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 12:03:30,810 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 12:03:30,811 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 12:03:30,811 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 12:03:30,812 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 12:03:30,813 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 12:03:30,813 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 12:03:30,814 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 12:03:30,815 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 12:03:30,816 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 12:03:30,816 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 12:03:30,818 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 12:03:30,819 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 12:03:30,820 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 12:03:30,821 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 12:03:30,822 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 12:03:30,823 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 12:03:30,826 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 12:03:30,827 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 12:03:30,827 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 12:03:30,828 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 12:03:30,828 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 12:03:30,829 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 12:03:30,829 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 12:03:30,830 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 12:03:30,830 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 12:03:30,831 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 12:03:30,832 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 12:03:30,832 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 12:03:30,832 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 12:03:30,832 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 12:03:30,833 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 12:03:30,833 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 12:03:30,834 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 12:03:30,835 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-01 12:03:30,852 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 12:03:30,853 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 12:03:30,853 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 12:03:30,853 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 12:03:30,853 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 12:03:30,854 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 12:03:30,854 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 12:03:30,854 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 12:03:30,854 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 12:03:30,854 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 12:03:30,854 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 12:03:30,854 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 12:03:30,855 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 12:03:30,855 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 12:03:30,855 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 12:03:30,855 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 12:03:30,855 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 12:03:30,855 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 12:03:30,856 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 12:03:30,856 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 12:03:30,856 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 12:03:30,856 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 12:03:30,856 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 12:03:30,857 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 12:03:30,857 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 12:03:30,857 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 12:03:30,857 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 12:03:30,857 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 12:03:30,857 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 12:03:30,857 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 12:03:30,858 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 12:03:30,858 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 12:03:30,858 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 12:03:30,858 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 12:03:30,858 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 12:03:30,858 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 12:03:30,858 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 12:03:30,859 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 12:03:30,859 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 12:03:30,859 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 12:03:30,859 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 12:03:30,859 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> EqDomain [2023-04-01 12:03:31,039 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 12:03:31,055 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 12:03:31,057 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 12:03:31,058 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 12:03:31,059 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 12:03:31,060 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec3_product39.cil.c [2023-04-01 12:03:32,219 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 12:03:32,415 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 12:03:32,424 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product39.cil.c [2023-04-01 12:03:32,434 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3deeab08/0c7deb257b9341bcaed7d0a7ac756e2f/FLAG7d9e5bae4 [2023-04-01 12:03:32,447 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3deeab08/0c7deb257b9341bcaed7d0a7ac756e2f [2023-04-01 12:03:32,449 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 12:03:32,451 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 12:03:32,452 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 12:03:32,452 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 12:03:32,455 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 12:03:32,455 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:03:32" (1/1) ... [2023-04-01 12:03:32,456 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46f85607 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:03:32, skipping insertion in model container [2023-04-01 12:03:32,457 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:03:32" (1/1) ... [2023-04-01 12:03:32,462 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 12:03:32,505 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 12:03:32,701 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_product39.cil.c[7086,7099] [2023-04-01 12:03:32,765 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 12:03:32,781 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 12:03:32,823 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_product39.cil.c[7086,7099] [2023-04-01 12:03:32,849 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 12:03:32,881 INFO L208 MainTranslator]: Completed translation [2023-04-01 12:03:32,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:03:32 WrapperNode [2023-04-01 12:03:32,882 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 12:03:32,883 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 12:03:32,883 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 12:03:32,883 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 12:03:32,899 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:03:32" (1/1) ... [2023-04-01 12:03:32,899 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:03:32" (1/1) ... [2023-04-01 12:03:32,928 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:03:32" (1/1) ... [2023-04-01 12:03:32,928 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:03:32" (1/1) ... [2023-04-01 12:03:32,960 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:03:32" (1/1) ... [2023-04-01 12:03:32,965 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:03:32" (1/1) ... [2023-04-01 12:03:32,975 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:03:32" (1/1) ... [2023-04-01 12:03:32,978 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:03:32" (1/1) ... [2023-04-01 12:03:32,984 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 12:03:32,985 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 12:03:32,985 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 12:03:32,985 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 12:03:32,986 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:03:32" (1/1) ... [2023-04-01 12:03:32,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 12:03:33,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 12:03:33,018 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 12:03:33,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 12:03:33,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 12:03:33,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 12:03:33,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2023-04-01 12:03:33,048 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 12:03:33,048 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2023-04-01 12:03:33,049 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2023-04-01 12:03:33,049 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2023-04-01 12:03:33,049 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2023-04-01 12:03:33,049 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2023-04-01 12:03:33,049 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2023-04-01 12:03:33,049 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2023-04-01 12:03:33,049 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2023-04-01 12:03:33,049 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2023-04-01 12:03:33,049 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2023-04-01 12:03:33,050 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2023-04-01 12:03:33,050 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-04-01 12:03:33,050 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2023-04-01 12:03:33,050 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2023-04-01 12:03:33,050 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2023-04-01 12:03:33,050 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2023-04-01 12:03:33,050 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2023-04-01 12:03:33,051 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2023-04-01 12:03:33,051 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2023-04-01 12:03:33,051 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2023-04-01 12:03:33,051 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2023-04-01 12:03:33,051 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2023-04-01 12:03:33,051 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2023-04-01 12:03:33,051 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-04-01 12:03:33,051 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2023-04-01 12:03:33,052 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2023-04-01 12:03:33,052 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2023-04-01 12:03:33,052 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2023-04-01 12:03:33,052 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2023-04-01 12:03:33,052 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2023-04-01 12:03:33,052 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-04-01 12:03:33,052 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2023-04-01 12:03:33,052 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2023-04-01 12:03:33,052 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2023-04-01 12:03:33,053 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 12:03:33,054 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2023-04-01 12:03:33,054 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 12:03:33,054 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 12:03:33,054 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 12:03:33,054 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 12:03:33,054 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 12:03:33,054 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2023-04-01 12:03:33,054 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2023-04-01 12:03:33,055 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2023-04-01 12:03:33,055 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2023-04-01 12:03:33,055 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2023-04-01 12:03:33,055 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2023-04-01 12:03:33,055 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2023-04-01 12:03:33,055 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2023-04-01 12:03:33,055 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2023-04-01 12:03:33,055 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2023-04-01 12:03:33,056 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2023-04-01 12:03:33,056 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2023-04-01 12:03:33,056 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-04-01 12:03:33,056 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2023-04-01 12:03:33,056 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2023-04-01 12:03:33,056 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2023-04-01 12:03:33,056 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2023-04-01 12:03:33,056 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2023-04-01 12:03:33,056 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2023-04-01 12:03:33,057 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2023-04-01 12:03:33,057 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2023-04-01 12:03:33,057 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2023-04-01 12:03:33,057 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2023-04-01 12:03:33,057 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2023-04-01 12:03:33,057 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-04-01 12:03:33,057 INFO L130 BoogieDeclarations]: Found specification of procedure test [2023-04-01 12:03:33,057 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-04-01 12:03:33,058 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-01 12:03:33,058 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-01 12:03:33,058 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2023-04-01 12:03:33,058 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-01 12:03:33,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-01 12:03:33,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 12:03:33,058 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-01 12:03:33,058 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2023-04-01 12:03:33,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 12:03:33,058 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2023-04-01 12:03:33,059 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2023-04-01 12:03:33,059 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 12:03:33,059 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2023-04-01 12:03:33,059 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2023-04-01 12:03:33,059 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2023-04-01 12:03:33,059 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2023-04-01 12:03:33,059 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2023-04-01 12:03:33,059 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2023-04-01 12:03:33,059 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 12:03:33,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 12:03:33,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 12:03:33,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 12:03:33,201 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 12:03:33,204 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 12:03:33,786 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 12:03:33,882 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 12:03:33,882 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-04-01 12:03:33,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:03:33 BoogieIcfgContainer [2023-04-01 12:03:33,887 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 12:03:33,889 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 12:03:33,890 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 12:03:33,892 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 12:03:33,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 12:03:32" (1/3) ... [2023-04-01 12:03:33,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5244fb86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:03:33, skipping insertion in model container [2023-04-01 12:03:33,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:03:32" (2/3) ... [2023-04-01 12:03:33,894 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5244fb86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:03:33, skipping insertion in model container [2023-04-01 12:03:33,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:03:33" (3/3) ... [2023-04-01 12:03:33,895 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product39.cil.c [2023-04-01 12:03:33,911 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 12:03:33,911 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 12:03:33,956 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 12:03:33,961 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;@6b18c77c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 12:03:33,961 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 12:03:33,965 INFO L276 IsEmpty]: Start isEmpty. Operand has 149 states, 69 states have (on average 1.289855072463768) internal successors, (89), 83 states have internal predecessors, (89), 48 states have call successors, (48), 29 states have call predecessors, (48), 29 states have return successors, (48), 44 states have call predecessors, (48), 48 states have call successors, (48) [2023-04-01 12:03:33,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-04-01 12:03:33,974 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:03:33,974 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 12:03:33,975 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:03:33,982 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:03:33,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1441336009, now seen corresponding path program 1 times [2023-04-01 12:03:33,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:03:33,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606946138] [2023-04-01 12:03:33,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:03:33,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:03:34,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:03:34,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:03:34,233 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:03:34,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606946138] [2023-04-01 12:03:34,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606946138] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:03:34,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:03:34,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-04-01 12:03:34,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893825680] [2023-04-01 12:03:34,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:03:34,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-04-01 12:03:34,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:03:34,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-04-01 12:03:34,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-01 12:03:34,286 INFO L87 Difference]: Start difference. First operand has 149 states, 69 states have (on average 1.289855072463768) internal successors, (89), 83 states have internal predecessors, (89), 48 states have call successors, (48), 29 states have call predecessors, (48), 29 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 12:03:34,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:03:34,373 INFO L93 Difference]: Finished difference Result 231 states and 284 transitions. [2023-04-01 12:03:34,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-04-01 12:03:34,377 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 12:03:34,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:03:34,391 INFO L225 Difference]: With dead ends: 231 [2023-04-01 12:03:34,391 INFO L226 Difference]: Without dead ends: 116 [2023-04-01 12:03:34,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-01 12:03:34,401 INFO L413 NwaCegarLoop]: 130 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, 130 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 [2023-04-01 12:03:34,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 130 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 12:03:34,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2023-04-01 12:03:34,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2023-04-01 12:03:34,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 60 states have (on average 1.25) internal successors, (75), 71 states have internal predecessors, (75), 33 states have call successors, (33), 27 states have call predecessors, (33), 22 states have return successors, (28), 24 states have call predecessors, (28), 28 states have call successors, (28) [2023-04-01 12:03:34,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 136 transitions. [2023-04-01 12:03:34,438 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 136 transitions. Word has length 47 [2023-04-01 12:03:34,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:03:34,438 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 136 transitions. [2023-04-01 12:03:34,439 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 12:03:34,439 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 136 transitions. [2023-04-01 12:03:34,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-04-01 12:03:34,442 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:03:34,442 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 12:03:34,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 12:03:34,442 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:03:34,443 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:03:34,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1350790916, now seen corresponding path program 1 times [2023-04-01 12:03:34,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:03:34,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41441147] [2023-04-01 12:03:34,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:03:34,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:03:34,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:03:34,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:03:34,571 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:03:34,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41441147] [2023-04-01 12:03:34,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41441147] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:03:34,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:03:34,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 12:03:34,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497676219] [2023-04-01 12:03:34,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:03:34,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 12:03:34,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:03:34,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 12:03:34,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 12:03:34,576 INFO L87 Difference]: Start difference. First operand 116 states and 136 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 12:03:34,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:03:34,641 INFO L93 Difference]: Finished difference Result 182 states and 212 transitions. [2023-04-01 12:03:34,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 12:03:34,642 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 12:03:34,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:03:34,644 INFO L225 Difference]: With dead ends: 182 [2023-04-01 12:03:34,644 INFO L226 Difference]: Without dead ends: 108 [2023-04-01 12:03:34,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 12:03:34,646 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 11 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 204 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 [2023-04-01 12:03:34,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 204 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 12:03:34,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2023-04-01 12:03:34,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2023-04-01 12:03:34,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 55 states have (on average 1.2545454545454546) internal successors, (69), 66 states have internal predecessors, (69), 30 states have call successors, (30), 26 states have call predecessors, (30), 22 states have return successors, (26), 22 states have call predecessors, (26), 26 states have call successors, (26) [2023-04-01 12:03:34,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 125 transitions. [2023-04-01 12:03:34,659 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 125 transitions. Word has length 48 [2023-04-01 12:03:34,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:03:34,659 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 125 transitions. [2023-04-01 12:03:34,660 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 12:03:34,660 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 125 transitions. [2023-04-01 12:03:34,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-04-01 12:03:34,662 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:03:34,662 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 12:03:34,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 12:03:34,662 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:03:34,662 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:03:34,663 INFO L85 PathProgramCache]: Analyzing trace with hash 721666740, now seen corresponding path program 1 times [2023-04-01 12:03:34,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:03:34,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217673009] [2023-04-01 12:03:34,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:03:34,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:03:34,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:03:34,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:03:34,950 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:03:34,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217673009] [2023-04-01 12:03:34,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217673009] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:03:34,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:03:34,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 12:03:34,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542962915] [2023-04-01 12:03:34,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:03:34,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 12:03:34,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:03:34,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 12:03:34,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-04-01 12:03:34,955 INFO L87 Difference]: Start difference. First operand 108 states and 125 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 12:03:35,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:03:35,314 INFO L93 Difference]: Finished difference Result 329 states and 394 transitions. [2023-04-01 12:03:35,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 12:03:35,315 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 12:03:35,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:03:35,324 INFO L225 Difference]: With dead ends: 329 [2023-04-01 12:03:35,325 INFO L226 Difference]: Without dead ends: 243 [2023-04-01 12:03:35,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-04-01 12:03:35,333 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 258 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 12:03:35,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 503 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 12:03:35,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2023-04-01 12:03:35,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 235. [2023-04-01 12:03:35,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 126 states have (on average 1.2857142857142858) internal successors, (162), 148 states have internal predecessors, (162), 61 states have call successors, (61), 53 states have call predecessors, (61), 47 states have return successors, (58), 45 states have call predecessors, (58), 57 states have call successors, (58) [2023-04-01 12:03:35,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 281 transitions. [2023-04-01 12:03:35,389 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 281 transitions. Word has length 51 [2023-04-01 12:03:35,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:03:35,389 INFO L495 AbstractCegarLoop]: Abstraction has 235 states and 281 transitions. [2023-04-01 12:03:35,390 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 12:03:35,390 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 281 transitions. [2023-04-01 12:03:35,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-04-01 12:03:35,396 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:03:35,396 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 12:03:35,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 12:03:35,397 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:03:35,397 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:03:35,397 INFO L85 PathProgramCache]: Analyzing trace with hash 691198760, now seen corresponding path program 1 times [2023-04-01 12:03:35,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:03:35,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684794413] [2023-04-01 12:03:35,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:03:35,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:03:35,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 12:03:35,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 12:03:35,601 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 12:03:35,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684794413] [2023-04-01 12:03:35,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684794413] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 12:03:35,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 12:03:35,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 12:03:35,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617309283] [2023-04-01 12:03:35,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 12:03:35,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-01 12:03:35,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 12:03:35,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-01 12:03:35,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-01 12:03:35,604 INFO L87 Difference]: Start difference. First operand 235 states and 281 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 12:03:35,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 12:03:35,777 INFO L93 Difference]: Finished difference Result 643 states and 796 transitions. [2023-04-01 12:03:35,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 12:03:35,778 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 12:03:35,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 12:03:35,784 INFO L225 Difference]: With dead ends: 643 [2023-04-01 12:03:35,785 INFO L226 Difference]: Without dead ends: 430 [2023-04-01 12:03:35,788 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 12:03:35,796 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 82 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 12:03:35,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 476 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 12:03:35,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2023-04-01 12:03:35,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 412. [2023-04-01 12:03:35,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 227 states have (on average 1.2907488986784141) internal successors, (293), 264 states have internal predecessors, (293), 104 states have call successors, (104), 88 states have call predecessors, (104), 80 states have return successors, (106), 76 states have call predecessors, (106), 100 states have call successors, (106) [2023-04-01 12:03:35,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 503 transitions. [2023-04-01 12:03:35,853 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 503 transitions. Word has length 56 [2023-04-01 12:03:35,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 12:03:35,853 INFO L495 AbstractCegarLoop]: Abstraction has 412 states and 503 transitions. [2023-04-01 12:03:35,854 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 12:03:35,854 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 503 transitions. [2023-04-01 12:03:35,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-04-01 12:03:35,858 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 12:03:35,858 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 12:03:35,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 12:03:35,858 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 12:03:35,859 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 12:03:35,859 INFO L85 PathProgramCache]: Analyzing trace with hash 770454944, now seen corresponding path program 1 times [2023-04-01 12:03:35,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 12:03:35,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827990167] [2023-04-01 12:03:35,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 12:03:35,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 12:03:35,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-04-01 12:03:35,889 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-04-01 12:03:35,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-04-01 12:03:35,935 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-04-01 12:03:35,935 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-04-01 12:03:35,936 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-01 12:03:35,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-01 12:03:35,941 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-04-01 12:03:35,945 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-01 12:03:35,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.04 12:03:35 BoogieIcfgContainer [2023-04-01 12:03:35,995 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-01 12:03:35,996 INFO L158 Benchmark]: Toolchain (without parser) took 3545.34ms. Allocated memory is still 277.9MB. Free memory was 228.0MB in the beginning and 103.3MB in the end (delta: 124.8MB). Peak memory consumption was 125.3MB. Max. memory is 8.0GB. [2023-04-01 12:03:35,996 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 187.7MB. Free memory is still 135.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-04-01 12:03:35,996 INFO L158 Benchmark]: CACSL2BoogieTranslator took 430.50ms. Allocated memory is still 277.9MB. Free memory was 228.0MB in the beginning and 209.7MB in the end (delta: 18.3MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2023-04-01 12:03:35,997 INFO L158 Benchmark]: Boogie Preprocessor took 100.93ms. Allocated memory is still 277.9MB. Free memory was 209.7MB in the beginning and 206.0MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-04-01 12:03:35,997 INFO L158 Benchmark]: RCFGBuilder took 902.15ms. Allocated memory is still 277.9MB. Free memory was 206.0MB in the beginning and 146.8MB in the end (delta: 59.2MB). Peak memory consumption was 58.7MB. Max. memory is 8.0GB. [2023-04-01 12:03:35,997 INFO L158 Benchmark]: TraceAbstraction took 2106.03ms. Allocated memory is still 277.9MB. Free memory was 145.7MB in the beginning and 103.3MB in the end (delta: 42.4MB). Peak memory consumption was 43.5MB. Max. memory is 8.0GB. [2023-04-01 12:03:35,998 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 187.7MB. Free memory is still 135.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 430.50ms. Allocated memory is still 277.9MB. Free memory was 228.0MB in the beginning and 209.7MB in the end (delta: 18.3MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * Boogie Preprocessor took 100.93ms. Allocated memory is still 277.9MB. Free memory was 209.7MB in the beginning and 206.0MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 902.15ms. Allocated memory is still 277.9MB. Free memory was 206.0MB in the beginning and 146.8MB in the end (delta: 59.2MB). Peak memory consumption was 58.7MB. Max. memory is 8.0GB. * TraceAbstraction took 2106.03ms. Allocated memory is still 277.9MB. Free memory was 145.7MB in the beginning and 103.3MB in the end (delta: 42.4MB). Peak memory consumption was 43.5MB. 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: 461]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L95] int waterLevel = 1; [L96] int methaneLevelCritical = 0; [L195] int pumpRunning = 0; [L196] int systemActive = 1; [L635] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L832] int cleanupTimeShifts = 4; [L905] int retValue_acc ; [L906] 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] [L910] 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] [L911] 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] [L912] 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] [L79] int retValue_acc ; [L82] retValue_acc = 1 [L83] return (retValue_acc); [L912] 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] [L912] tmp = valid_product() [L914] 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] [L916] 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] [L917] 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] [L899] 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] [L391] int splverifierCounter ; [L392] int tmp ; [L393] int tmp___0 ; [L394] int tmp___1 ; [L395] int tmp___2 ; [L398] 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] [L400] 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] [L402] COND TRUE splverifierCounter < 4 [L408] tmp = __VERIFIER_nondet_int() [L410] 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] [L412] 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] [L113] COND TRUE waterLevel < 2 [L114] waterLevel = waterLevel + 1 [L412] 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] [L418] tmp___0 = __VERIFIER_nondet_int() [L420] 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] [L428] tmp___2 = __VERIFIER_nondet_int() [L430] COND FALSE !(\read(tmp___2)) [L434] tmp___1 = __VERIFIER_nondet_int() [L436] 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] [L438] 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] [L377] 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] [L384] systemActive = 0 [L438] 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] [L445] 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] [L203] 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] [L210] 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] [L218] 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] [L929] int tmp ; [L930] int tmp___0 ; [L931] 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] [L935] 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] [L134] int retValue_acc ; [L137] retValue_acc = methaneLevelCritical [L138] return (retValue_acc); [L935] 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] [L935] tmp = isMethaneLevelCritical() [L937] 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] [L941] 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] [L166] int retValue_acc ; [L169] retValue_acc = waterLevel [L170] return (retValue_acc); [L941] 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] [L941] tmp___0 = getWaterLevel() [L943] 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] [L945] 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] [L310] int retValue_acc ; [L313] retValue_acc = pumpRunning [L314] return (retValue_acc); [L945] 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] [L945] tmp___1 = isPumpRunning() [L947] 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] [L951] 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] [L461] 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: 2.0s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 357 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 351 mSDsluCounter, 1313 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 833 mSDsCounter, 50 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 439 IncrementalHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 50 mSolverCounterUnsat, 480 mSDtfsCounter, 439 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=412occurred 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, 0.6s 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 12:03:36,023 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...