/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain OctagonDomain -i ../sv-benchmarks/c/product-lines/minepump_spec1_product54.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-03 00:59:29,414 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-03 00:59:29,416 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-03 00:59:29,445 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-03 00:59:29,445 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-03 00:59:29,447 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-03 00:59:29,450 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-03 00:59:29,453 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-03 00:59:29,454 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-03 00:59:29,458 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-03 00:59:29,459 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-03 00:59:29,460 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-03 00:59:29,460 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-03 00:59:29,461 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-03 00:59:29,461 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-03 00:59:29,462 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-03 00:59:29,463 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-03 00:59:29,463 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-03 00:59:29,464 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-03 00:59:29,466 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-03 00:59:29,467 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-03 00:59:29,472 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-03 00:59:29,474 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-03 00:59:29,476 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-03 00:59:29,485 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-03 00:59:29,485 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-03 00:59:29,485 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-03 00:59:29,486 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-03 00:59:29,486 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-03 00:59:29,487 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-03 00:59:29,487 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-03 00:59:29,488 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-03 00:59:29,488 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-03 00:59:29,489 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-03 00:59:29,490 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-03 00:59:29,490 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-03 00:59:29,491 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-03 00:59:29,491 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-03 00:59:29,491 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-03 00:59:29,492 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-03 00:59:29,492 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-03 00:59:29,496 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-03 00:59:29,528 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-03 00:59:29,528 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-03 00:59:29,528 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-03 00:59:29,528 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-03 00:59:29,531 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-03 00:59:29,532 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-03 00:59:29,532 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-03 00:59:29,532 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-03 00:59:29,532 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-03 00:59:29,532 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-03 00:59:29,533 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-03 00:59:29,533 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-03 00:59:29,533 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-03 00:59:29,533 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-03 00:59:29,533 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-03 00:59:29,534 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-03 00:59:29,534 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-03 00:59:29,534 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-03 00:59:29,535 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-03 00:59:29,535 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-03 00:59:29,535 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-03 00:59:29,535 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-03 00:59:29,535 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-03 00:59:29,536 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-03 00:59:29,536 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-03 00:59:29,536 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-03 00:59:29,536 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-03 00:59:29,536 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-03 00:59:29,536 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-03 00:59:29,537 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-03 00:59:29,537 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-03 00:59:29,537 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-03 00:59:29,537 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 00:59:29,537 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-03 00:59:29,537 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-03 00:59:29,537 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-03 00:59:29,538 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-03 00:59:29,538 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-03 00:59:29,538 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-03 00:59:29,538 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-03 00:59:29,538 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-03 00:59:29,538 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-03 00:59:29,778 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-03 00:59:29,803 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-03 00:59:29,806 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-03 00:59:29,807 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-03 00:59:29,807 INFO L275 PluginConnector]: CDTParser initialized [2023-04-03 00:59:29,808 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec1_product54.cil.c [2023-04-03 00:59:31,081 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-03 00:59:31,336 INFO L351 CDTParser]: Found 1 translation units. [2023-04-03 00:59:31,337 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec1_product54.cil.c [2023-04-03 00:59:31,345 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05d18cb82/2142ec3c20a34b6c966c3ea6a4a254eb/FLAGd41db613b [2023-04-03 00:59:31,359 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05d18cb82/2142ec3c20a34b6c966c3ea6a4a254eb [2023-04-03 00:59:31,360 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-03 00:59:31,362 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-03 00:59:31,363 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-03 00:59:31,363 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-03 00:59:31,371 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-03 00:59:31,371 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 12:59:31" (1/1) ... [2023-04-03 00:59:31,372 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e80442b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 12:59:31, skipping insertion in model container [2023-04-03 00:59:31,372 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 12:59:31" (1/1) ... [2023-04-03 00:59:31,378 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-03 00:59:31,427 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-03 00:59:31,620 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec1_product54.cil.c[3816,3829] [2023-04-03 00:59:31,729 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 00:59:31,742 INFO L203 MainTranslator]: Completed pre-run [2023-04-03 00:59:31,769 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec1_product54.cil.c[3816,3829] [2023-04-03 00:59:31,826 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 00:59:31,844 INFO L208 MainTranslator]: Completed translation [2023-04-03 00:59:31,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 12:59:31 WrapperNode [2023-04-03 00:59:31,844 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-03 00:59:31,845 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-03 00:59:31,845 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-03 00:59:31,846 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-03 00:59:31,856 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 12:59:31" (1/1) ... [2023-04-03 00:59:31,856 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 12:59:31" (1/1) ... [2023-04-03 00:59:31,868 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 12:59:31" (1/1) ... [2023-04-03 00:59:31,869 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 12:59:31" (1/1) ... [2023-04-03 00:59:31,894 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 12:59:31" (1/1) ... [2023-04-03 00:59:31,911 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 12:59:31" (1/1) ... [2023-04-03 00:59:31,914 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 12:59:31" (1/1) ... [2023-04-03 00:59:31,915 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 12:59:31" (1/1) ... [2023-04-03 00:59:31,927 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-03 00:59:31,928 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-03 00:59:31,928 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-03 00:59:31,928 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-03 00:59:31,929 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 12:59:31" (1/1) ... [2023-04-03 00:59:31,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 00:59:31,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 00:59:31,962 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-03 00:59:31,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-03 00:59:31,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-03 00:59:31,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-03 00:59:31,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2023-04-03 00:59:31,998 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-03 00:59:31,999 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-04-03 00:59:31,999 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2023-04-03 00:59:31,999 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2023-04-03 00:59:31,999 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2023-04-03 00:59:31,999 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-03 00:59:32,000 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2023-04-03 00:59:32,001 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-04-03 00:59:32,001 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-04-03 00:59:32,001 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2023-04-03 00:59:32,001 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2023-04-03 00:59:32,001 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2023-04-03 00:59:32,001 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2023-04-03 00:59:32,002 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2023-04-03 00:59:32,002 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2023-04-03 00:59:32,002 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2023-04-03 00:59:32,002 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2023-04-03 00:59:32,002 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2023-04-03 00:59:32,002 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2023-04-03 00:59:32,002 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2023-04-03 00:59:32,002 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2023-04-03 00:59:32,002 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2023-04-03 00:59:32,003 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2023-04-03 00:59:32,003 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2023-04-03 00:59:32,003 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2023-04-03 00:59:32,003 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2023-04-03 00:59:32,003 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2023-04-03 00:59:32,003 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2023-04-03 00:59:32,003 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2023-04-03 00:59:32,003 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2023-04-03 00:59:32,003 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2023-04-03 00:59:32,003 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2023-04-03 00:59:32,004 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2023-04-03 00:59:32,004 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2023-04-03 00:59:32,004 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2023-04-03 00:59:32,004 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2023-04-03 00:59:32,004 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2023-04-03 00:59:32,004 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2023-04-03 00:59:32,005 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2023-04-03 00:59:32,005 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2023-04-03 00:59:32,005 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-03 00:59:32,006 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-03 00:59:32,006 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-03 00:59:32,006 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-03 00:59:32,006 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-03 00:59:32,007 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2023-04-03 00:59:32,007 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-04-03 00:59:32,007 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-04-03 00:59:32,007 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2023-04-03 00:59:32,007 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2023-04-03 00:59:32,007 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2023-04-03 00:59:32,008 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2023-04-03 00:59:32,008 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2023-04-03 00:59:32,008 INFO L130 BoogieDeclarations]: Found specification of procedure test [2023-04-03 00:59:32,008 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2023-04-03 00:59:32,008 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2023-04-03 00:59:32,009 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2023-04-03 00:59:32,009 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2023-04-03 00:59:32,009 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-03 00:59:32,010 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2023-04-03 00:59:32,010 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-04-03 00:59:32,010 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2023-04-03 00:59:32,010 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2023-04-03 00:59:32,010 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2023-04-03 00:59:32,010 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2023-04-03 00:59:32,010 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2023-04-03 00:59:32,010 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2023-04-03 00:59:32,010 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2023-04-03 00:59:32,010 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2023-04-03 00:59:32,010 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2023-04-03 00:59:32,011 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2023-04-03 00:59:32,011 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2023-04-03 00:59:32,011 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2023-04-03 00:59:32,011 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2023-04-03 00:59:32,011 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2023-04-03 00:59:32,011 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2023-04-03 00:59:32,011 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2023-04-03 00:59:32,011 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2023-04-03 00:59:32,011 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-03 00:59:32,011 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-03 00:59:32,012 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2023-04-03 00:59:32,012 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-03 00:59:32,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-03 00:59:32,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-03 00:59:32,013 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-03 00:59:32,013 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2023-04-03 00:59:32,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-03 00:59:32,013 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2023-04-03 00:59:32,013 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2023-04-03 00:59:32,013 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-03 00:59:32,014 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2023-04-03 00:59:32,014 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2023-04-03 00:59:32,014 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2023-04-03 00:59:32,014 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2023-04-03 00:59:32,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-03 00:59:32,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-03 00:59:32,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-03 00:59:32,230 INFO L236 CfgBuilder]: Building ICFG [2023-04-03 00:59:32,232 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-03 00:59:32,693 INFO L277 CfgBuilder]: Performing block encoding [2023-04-03 00:59:32,831 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-03 00:59:32,831 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-04-03 00:59:32,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 12:59:32 BoogieIcfgContainer [2023-04-03 00:59:32,834 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-03 00:59:32,837 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-03 00:59:32,837 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-03 00:59:32,840 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-03 00:59:32,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.04 12:59:31" (1/3) ... [2023-04-03 00:59:32,841 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@269b7f1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 12:59:32, skipping insertion in model container [2023-04-03 00:59:32,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 12:59:31" (2/3) ... [2023-04-03 00:59:32,841 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@269b7f1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 12:59:32, skipping insertion in model container [2023-04-03 00:59:32,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 12:59:32" (3/3) ... [2023-04-03 00:59:32,846 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product54.cil.c [2023-04-03 00:59:32,862 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-03 00:59:32,862 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-03 00:59:32,916 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-03 00:59:32,922 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;@1ea413b8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-03 00:59:32,923 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-03 00:59:32,927 INFO L276 IsEmpty]: Start isEmpty. Operand has 157 states, 72 states have (on average 1.2638888888888888) internal successors, (91), 87 states have internal predecessors, (91), 51 states have call successors, (51), 31 states have call predecessors, (51), 31 states have return successors, (51), 45 states have call predecessors, (51), 51 states have call successors, (51) [2023-04-03 00:59:32,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-04-03 00:59:32,939 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 00:59:32,943 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 00:59:32,944 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 00:59:32,951 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 00:59:32,951 INFO L85 PathProgramCache]: Analyzing trace with hash -615088129, now seen corresponding path program 1 times [2023-04-03 00:59:32,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 00:59:32,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954747366] [2023-04-03 00:59:32,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 00:59:32,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 00:59:33,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 00:59:33,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 00:59:33,246 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 00:59:33,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954747366] [2023-04-03 00:59:33,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954747366] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 00:59:33,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 00:59:33,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-04-03 00:59:33,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348409752] [2023-04-03 00:59:33,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 00:59:33,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-04-03 00:59:33,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 00:59:33,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-04-03 00:59:33,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-03 00:59:33,292 INFO L87 Difference]: Start difference. First operand has 157 states, 72 states have (on average 1.2638888888888888) internal successors, (91), 87 states have internal predecessors, (91), 51 states have call successors, (51), 31 states have call predecessors, (51), 31 states have return successors, (51), 45 states have call predecessors, (51), 51 states have call successors, (51) Second operand has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-04-03 00:59:33,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 00:59:33,377 INFO L93 Difference]: Finished difference Result 247 states and 300 transitions. [2023-04-03 00:59:33,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-04-03 00:59:33,379 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 42 [2023-04-03 00:59:33,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 00:59:33,389 INFO L225 Difference]: With dead ends: 247 [2023-04-03 00:59:33,389 INFO L226 Difference]: Without dead ends: 124 [2023-04-03 00:59:33,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-03 00:59:33,396 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-03 00:59:33,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 136 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-03 00:59:33,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2023-04-03 00:59:33,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2023-04-03 00:59:33,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 63 states have (on average 1.2222222222222223) internal successors, (77), 75 states have internal predecessors, (77), 36 states have call successors, (36), 29 states have call predecessors, (36), 24 states have return successors, (31), 25 states have call predecessors, (31), 31 states have call successors, (31) [2023-04-03 00:59:33,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 144 transitions. [2023-04-03 00:59:33,444 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 144 transitions. Word has length 42 [2023-04-03 00:59:33,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 00:59:33,445 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 144 transitions. [2023-04-03 00:59:33,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-04-03 00:59:33,445 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 144 transitions. [2023-04-03 00:59:33,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-04-03 00:59:33,447 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 00:59:33,447 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 00:59:33,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-03 00:59:33,448 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 00:59:33,448 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 00:59:33,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1183417516, now seen corresponding path program 1 times [2023-04-03 00:59:33,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 00:59:33,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873726241] [2023-04-03 00:59:33,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 00:59:33,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 00:59:33,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 00:59:33,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 00:59:33,579 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 00:59:33,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873726241] [2023-04-03 00:59:33,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873726241] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 00:59:33,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 00:59:33,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 00:59:33,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814425330] [2023-04-03 00:59:33,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 00:59:33,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 00:59:33,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 00:59:33,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 00:59:33,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 00:59:33,582 INFO L87 Difference]: Start difference. First operand 124 states and 144 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-04-03 00:59:33,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 00:59:33,658 INFO L93 Difference]: Finished difference Result 201 states and 234 transitions. [2023-04-03 00:59:33,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 00:59:33,659 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 43 [2023-04-03 00:59:33,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 00:59:33,660 INFO L225 Difference]: With dead ends: 201 [2023-04-03 00:59:33,660 INFO L226 Difference]: Without dead ends: 116 [2023-04-03 00:59:33,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 00:59:33,662 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 9 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-03 00:59:33,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 219 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-03 00:59:33,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2023-04-03 00:59:33,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2023-04-03 00:59:33,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 58 states have (on average 1.2241379310344827) internal successors, (71), 70 states have internal predecessors, (71), 33 states have call successors, (33), 28 states have call predecessors, (33), 24 states have return successors, (29), 23 states have call predecessors, (29), 29 states have call successors, (29) [2023-04-03 00:59:33,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 133 transitions. [2023-04-03 00:59:33,673 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 133 transitions. Word has length 43 [2023-04-03 00:59:33,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 00:59:33,674 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 133 transitions. [2023-04-03 00:59:33,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-04-03 00:59:33,674 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 133 transitions. [2023-04-03 00:59:33,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-04-03 00:59:33,675 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 00:59:33,675 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 00:59:33,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-03 00:59:33,676 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 00:59:33,676 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 00:59:33,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1094629096, now seen corresponding path program 1 times [2023-04-03 00:59:33,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 00:59:33,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623381300] [2023-04-03 00:59:33,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 00:59:33,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 00:59:33,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 00:59:33,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 00:59:33,959 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 00:59:33,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623381300] [2023-04-03 00:59:33,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623381300] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 00:59:33,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 00:59:33,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-03 00:59:33,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226634019] [2023-04-03 00:59:33,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 00:59:33,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-03 00:59:33,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 00:59:33,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-03 00:59:33,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-04-03 00:59:33,962 INFO L87 Difference]: Start difference. First operand 116 states and 133 transitions. Second operand has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 4 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-04-03 00:59:34,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 00:59:34,247 INFO L93 Difference]: Finished difference Result 210 states and 245 transitions. [2023-04-03 00:59:34,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-03 00:59:34,248 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 4 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 46 [2023-04-03 00:59:34,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 00:59:34,250 INFO L225 Difference]: With dead ends: 210 [2023-04-03 00:59:34,250 INFO L226 Difference]: Without dead ends: 116 [2023-04-03 00:59:34,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-04-03 00:59:34,252 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 122 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-03 00:59:34,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 324 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-03 00:59:34,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2023-04-03 00:59:34,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2023-04-03 00:59:34,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 58 states have (on average 1.206896551724138) internal successors, (70), 69 states have internal predecessors, (70), 33 states have call successors, (33), 28 states have call predecessors, (33), 24 states have return successors, (29), 23 states have call predecessors, (29), 29 states have call successors, (29) [2023-04-03 00:59:34,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 132 transitions. [2023-04-03 00:59:34,265 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 132 transitions. Word has length 46 [2023-04-03 00:59:34,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 00:59:34,266 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 132 transitions. [2023-04-03 00:59:34,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 4 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-04-03 00:59:34,266 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 132 transitions. [2023-04-03 00:59:34,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-04-03 00:59:34,268 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 00:59:34,268 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 00:59:34,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-03 00:59:34,268 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 00:59:34,269 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 00:59:34,269 INFO L85 PathProgramCache]: Analyzing trace with hash 906853954, now seen corresponding path program 1 times [2023-04-03 00:59:34,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 00:59:34,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239809214] [2023-04-03 00:59:34,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 00:59:34,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 00:59:34,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 00:59:34,421 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-03 00:59:34,422 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 00:59:34,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239809214] [2023-04-03 00:59:34,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239809214] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 00:59:34,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 00:59:34,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 00:59:34,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738658820] [2023-04-03 00:59:34,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 00:59:34,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 00:59:34,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 00:59:34,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 00:59:34,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 00:59:34,424 INFO L87 Difference]: Start difference. First operand 116 states and 132 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2023-04-03 00:59:34,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 00:59:34,744 INFO L93 Difference]: Finished difference Result 306 states and 364 transitions. [2023-04-03 00:59:34,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-03 00:59:34,744 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) Word has length 63 [2023-04-03 00:59:34,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 00:59:34,751 INFO L225 Difference]: With dead ends: 306 [2023-04-03 00:59:34,751 INFO L226 Difference]: Without dead ends: 212 [2023-04-03 00:59:34,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-04-03 00:59:34,761 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 183 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-03 00:59:34,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 174 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-03 00:59:34,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2023-04-03 00:59:34,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 195. [2023-04-03 00:59:34,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 104 states have (on average 1.1538461538461537) internal successors, (120), 114 states have internal predecessors, (120), 45 states have call successors, (45), 42 states have call predecessors, (45), 45 states have return successors, (50), 45 states have call predecessors, (50), 41 states have call successors, (50) [2023-04-03 00:59:34,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 215 transitions. [2023-04-03 00:59:34,807 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 215 transitions. Word has length 63 [2023-04-03 00:59:34,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 00:59:34,808 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 215 transitions. [2023-04-03 00:59:34,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2023-04-03 00:59:34,808 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 215 transitions. [2023-04-03 00:59:34,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-04-03 00:59:34,815 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 00:59:34,816 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 00:59:34,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-03 00:59:34,816 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 00:59:34,816 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 00:59:34,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1935566820, now seen corresponding path program 1 times [2023-04-03 00:59:34,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 00:59:34,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728504215] [2023-04-03 00:59:34,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 00:59:34,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 00:59:34,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 00:59:35,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 00:59:35,310 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 00:59:35,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728504215] [2023-04-03 00:59:35,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728504215] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 00:59:35,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 00:59:35,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-03 00:59:35,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900076206] [2023-04-03 00:59:35,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 00:59:35,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-03 00:59:35,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 00:59:35,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-03 00:59:35,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-04-03 00:59:35,313 INFO L87 Difference]: Start difference. First operand 195 states and 215 transitions. Second operand has 12 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 4 states have call successors, (19), 3 states have call predecessors, (19), 6 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) [2023-04-03 00:59:35,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 00:59:35,808 INFO L93 Difference]: Finished difference Result 517 states and 585 transitions. [2023-04-03 00:59:35,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-03 00:59:35,809 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 4 states have call successors, (19), 3 states have call predecessors, (19), 6 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) Word has length 73 [2023-04-03 00:59:35,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 00:59:35,814 INFO L225 Difference]: With dead ends: 517 [2023-04-03 00:59:35,814 INFO L226 Difference]: Without dead ends: 344 [2023-04-03 00:59:35,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2023-04-03 00:59:35,821 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 132 mSDsluCounter, 894 mSDsCounter, 0 mSdLazyCounter, 673 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 1067 SdHoareTripleChecker+Invalid, 678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-03 00:59:35,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 1067 Invalid, 678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 673 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-03 00:59:35,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2023-04-03 00:59:35,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 334. [2023-04-03 00:59:35,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 186 states have (on average 1.1666666666666667) internal successors, (217), 203 states have internal predecessors, (217), 74 states have call successors, (74), 71 states have call predecessors, (74), 73 states have return successors, (86), 74 states have call predecessors, (86), 70 states have call successors, (86) [2023-04-03 00:59:35,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 377 transitions. [2023-04-03 00:59:35,874 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 377 transitions. Word has length 73 [2023-04-03 00:59:35,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 00:59:35,874 INFO L495 AbstractCegarLoop]: Abstraction has 334 states and 377 transitions. [2023-04-03 00:59:35,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 4 states have call successors, (19), 3 states have call predecessors, (19), 6 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) [2023-04-03 00:59:35,874 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 377 transitions. [2023-04-03 00:59:35,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-04-03 00:59:35,875 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 00:59:35,876 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 00:59:35,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-03 00:59:35,876 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 00:59:35,876 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 00:59:35,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1222027585, now seen corresponding path program 1 times [2023-04-03 00:59:35,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 00:59:35,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885002835] [2023-04-03 00:59:35,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 00:59:35,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 00:59:35,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 00:59:36,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 00:59:36,050 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 00:59:36,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885002835] [2023-04-03 00:59:36,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885002835] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 00:59:36,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 00:59:36,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-03 00:59:36,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560699223] [2023-04-03 00:59:36,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 00:59:36,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-03 00:59:36,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 00:59:36,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-03 00:59:36,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-03 00:59:36,053 INFO L87 Difference]: Start difference. First operand 334 states and 377 transitions. Second operand has 7 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2023-04-03 00:59:36,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 00:59:36,465 INFO L93 Difference]: Finished difference Result 358 states and 409 transitions. [2023-04-03 00:59:36,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-03 00:59:36,466 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) Word has length 73 [2023-04-03 00:59:36,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 00:59:36,469 INFO L225 Difference]: With dead ends: 358 [2023-04-03 00:59:36,469 INFO L226 Difference]: Without dead ends: 355 [2023-04-03 00:59:36,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2023-04-03 00:59:36,471 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 148 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-03 00:59:36,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 274 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-03 00:59:36,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2023-04-03 00:59:36,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 334. [2023-04-03 00:59:36,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 186 states have (on average 1.1505376344086022) internal successors, (214), 203 states have internal predecessors, (214), 74 states have call successors, (74), 71 states have call predecessors, (74), 73 states have return successors, (86), 74 states have call predecessors, (86), 70 states have call successors, (86) [2023-04-03 00:59:36,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 374 transitions. [2023-04-03 00:59:36,522 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 374 transitions. Word has length 73 [2023-04-03 00:59:36,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 00:59:36,524 INFO L495 AbstractCegarLoop]: Abstraction has 334 states and 374 transitions. [2023-04-03 00:59:36,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2023-04-03 00:59:36,524 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 374 transitions. [2023-04-03 00:59:36,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-04-03 00:59:36,525 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 00:59:36,525 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 00:59:36,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-03 00:59:36,526 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 00:59:36,526 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 00:59:36,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1639261866, now seen corresponding path program 1 times [2023-04-03 00:59:36,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 00:59:36,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72193263] [2023-04-03 00:59:36,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 00:59:36,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 00:59:36,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 00:59:36,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-03 00:59:36,683 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 00:59:36,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72193263] [2023-04-03 00:59:36,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72193263] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 00:59:36,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 00:59:36,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-03 00:59:36,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345908566] [2023-04-03 00:59:36,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 00:59:36,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-03 00:59:36,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 00:59:36,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-03 00:59:36,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-03 00:59:36,686 INFO L87 Difference]: Start difference. First operand 334 states and 374 transitions. Second operand has 6 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2023-04-03 00:59:36,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 00:59:36,888 INFO L93 Difference]: Finished difference Result 935 states and 1079 transitions. [2023-04-03 00:59:36,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-03 00:59:36,889 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) Word has length 76 [2023-04-03 00:59:36,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 00:59:36,894 INFO L225 Difference]: With dead ends: 935 [2023-04-03 00:59:36,894 INFO L226 Difference]: Without dead ends: 623 [2023-04-03 00:59:36,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-04-03 00:59:36,896 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 93 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-03 00:59:36,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 486 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-03 00:59:36,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2023-04-03 00:59:36,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 603. [2023-04-03 00:59:36,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 342 states have (on average 1.1432748538011697) internal successors, (391), 370 states have internal predecessors, (391), 129 states have call successors, (129), 123 states have call predecessors, (129), 131 states have return successors, (157), 133 states have call predecessors, (157), 125 states have call successors, (157) [2023-04-03 00:59:36,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 677 transitions. [2023-04-03 00:59:36,957 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 677 transitions. Word has length 76 [2023-04-03 00:59:36,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 00:59:36,958 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 677 transitions. [2023-04-03 00:59:36,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2023-04-03 00:59:36,958 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 677 transitions. [2023-04-03 00:59:36,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-04-03 00:59:36,961 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 00:59:36,961 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 00:59:36,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-03 00:59:36,962 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-03 00:59:36,962 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 00:59:36,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1636304849, now seen corresponding path program 1 times [2023-04-03 00:59:36,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 00:59:36,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7026821] [2023-04-03 00:59:36,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 00:59:36,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 00:59:36,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-04-03 00:59:36,980 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-04-03 00:59:36,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-04-03 00:59:37,025 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-04-03 00:59:37,025 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-04-03 00:59:37,026 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-03 00:59:37,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-03 00:59:37,030 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 00:59:37,033 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-03 00:59:37,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.04 12:59:37 BoogieIcfgContainer [2023-04-03 00:59:37,096 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-03 00:59:37,097 INFO L158 Benchmark]: Toolchain (without parser) took 5735.33ms. Allocated memory was 277.9MB in the beginning and 391.1MB in the end (delta: 113.2MB). Free memory was 230.1MB in the beginning and 189.5MB in the end (delta: 40.6MB). Peak memory consumption was 154.9MB. Max. memory is 8.0GB. [2023-04-03 00:59:37,097 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 188.7MB. Free memory is still 140.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-04-03 00:59:37,097 INFO L158 Benchmark]: CACSL2BoogieTranslator took 481.88ms. Allocated memory is still 277.9MB. Free memory was 229.6MB in the beginning and 211.3MB in the end (delta: 18.3MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2023-04-03 00:59:37,097 INFO L158 Benchmark]: Boogie Preprocessor took 81.82ms. Allocated memory is still 277.9MB. Free memory was 211.3MB in the beginning and 207.6MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-04-03 00:59:37,098 INFO L158 Benchmark]: RCFGBuilder took 906.10ms. Allocated memory is still 277.9MB. Free memory was 207.6MB in the beginning and 144.7MB in the end (delta: 62.9MB). Peak memory consumption was 62.9MB. Max. memory is 8.0GB. [2023-04-03 00:59:37,098 INFO L158 Benchmark]: TraceAbstraction took 4259.19ms. Allocated memory was 277.9MB in the beginning and 391.1MB in the end (delta: 113.2MB). Free memory was 144.2MB in the beginning and 189.5MB in the end (delta: -45.4MB). Peak memory consumption was 68.9MB. Max. memory is 8.0GB. [2023-04-03 00:59:37,100 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 188.7MB. Free memory is still 140.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 481.88ms. Allocated memory is still 277.9MB. Free memory was 229.6MB in the beginning and 211.3MB in the end (delta: 18.3MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * Boogie Preprocessor took 81.82ms. Allocated memory is still 277.9MB. Free memory was 211.3MB in the beginning and 207.6MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 906.10ms. Allocated memory is still 277.9MB. Free memory was 207.6MB in the beginning and 144.7MB in the end (delta: 62.9MB). Peak memory consumption was 62.9MB. Max. memory is 8.0GB. * TraceAbstraction took 4259.19ms. Allocated memory was 277.9MB in the beginning and 391.1MB in the end (delta: 113.2MB). Free memory was 144.2MB in the beginning and 189.5MB in the end (delta: -45.4MB). Peak memory consumption was 68.9MB. 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: 226]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L50] int cleanupTimeShifts = 4; [L239] int pumpRunning = 0; [L240] int systemActive = 1; [L701] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L899] int waterLevel = 1; [L900] int methaneLevelCritical = 0; [L131] int retValue_acc ; [L132] 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] [L136] 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] [L137] 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] [L138] 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] [L497] int retValue_acc ; [L500] retValue_acc = 1 [L501] return (retValue_acc); [L138] 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] [L138] tmp = valid_product() [L140] 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] [L142] 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] [L143] 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] [L122] 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] [L156] int splverifierCounter ; [L157] int tmp ; [L158] int tmp___0 ; [L159] int tmp___1 ; [L160] int tmp___2 ; [L163] 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] [L165] 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] [L167] COND TRUE splverifierCounter < 4 [L173] tmp = __VERIFIER_nondet_int() [L175] 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] [L177] 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] [L917] COND TRUE waterLevel < 2 [L918] waterLevel = waterLevel + 1 [L177] 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] [L183] tmp___0 = __VERIFIER_nondet_int() [L185] COND TRUE \read(tmp___0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L187] CALL changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L929] COND FALSE !(\read(methaneLevelCritical)) [L932] methaneLevelCritical = 1 [L187] RET changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L193] tmp___2 = __VERIFIER_nondet_int() [L195] COND FALSE !(\read(tmp___2)) [L201] tmp___1 = __VERIFIER_nondet_int() [L203] COND TRUE \read(tmp___1) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, tmp___1=-1, tmp___2=0, waterLevel=2] [L210] CALL timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L247] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L254] COND TRUE \read(systemActive) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L256] CALL processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L328] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L331] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L346] CALL processEnvironment__wrappee__lowWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L302] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L305] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L320] CALL processEnvironment__wrappee__highWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L276] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L279] COND TRUE ! pumpRunning VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L281] CALL, EXPR isHighWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L425] int retValue_acc ; [L426] int tmp ; [L427] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L431] CALL, EXPR isHighWaterSensorDry() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L979] int retValue_acc ; [L982] COND FALSE !(waterLevel < 2) [L986] retValue_acc = 0 [L987] return (retValue_acc); [L431] RET, EXPR isHighWaterSensorDry() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterSensorDry()=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L431] tmp = isHighWaterSensorDry() [L433] COND FALSE !(\read(tmp)) [L436] tmp___0 = 1 [L438] retValue_acc = tmp___0 [L439] return (retValue_acc); [L281] RET, EXPR isHighWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterLevel()=1, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L281] tmp = isHighWaterLevel() [L283] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=1, waterLevel=2] [L285] CALL activatePump() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L356] pumpRunning = 1 [L285] RET activatePump() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L320] RET processEnvironment__wrappee__highWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L346] RET processEnvironment__wrappee__lowWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L256] RET processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L262] CALL __utac_acc__Specification1_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L507] int tmp ; [L508] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L512] CALL, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L938] int retValue_acc ; [L941] retValue_acc = methaneLevelCritical [L942] return (retValue_acc); [L512] RET, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L512] tmp = isMethaneLevelCritical() [L514] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L516] CALL, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L380] int retValue_acc ; [L383] retValue_acc = pumpRunning [L384] return (retValue_acc); [L516] RET, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isPumpRunning()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L516] tmp___0 = isPumpRunning() [L518] COND TRUE \read(tmp___0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L520] CALL __automaton_fail() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L226] reach_error() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 43 procedures, 198 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.1s, OverallIterations: 8, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 718 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 687 mSDsluCounter, 2680 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1886 mSDsCounter, 243 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1802 IncrementalHoareTripleChecker+Invalid, 2045 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 243 mSolverCounterUnsat, 794 mSDtfsCounter, 1802 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 83 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=603occurred in iteration=7, InterpolantAutomatonStates: 53, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 7 MinimizatonAttempts, 68 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 495 NumberOfCodeBlocks, 495 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 409 ConstructedInterpolants, 0 QuantifiedInterpolants, 717 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 2/2 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-04-03 00:59:37,126 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...