/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain IntervalDomain -i ../sv-benchmarks/c/product-lines/minepump_spec3_product44.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 23:54:56,309 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 23:54:56,311 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 23:54:56,344 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 23:54:56,344 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 23:54:56,345 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 23:54:56,346 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 23:54:56,348 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 23:54:56,349 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 23:54:56,350 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 23:54:56,351 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 23:54:56,352 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 23:54:56,352 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 23:54:56,353 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 23:54:56,354 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 23:54:56,354 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 23:54:56,355 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 23:54:56,356 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 23:54:56,357 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 23:54:56,358 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 23:54:56,360 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 23:54:56,361 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 23:54:56,362 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 23:54:56,362 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 23:54:56,375 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-03-31 23:54:56,376 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-03-31 23:54:56,377 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-03-31 23:54:56,377 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-03-31 23:54:56,378 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-03-31 23:54:56,378 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-03-31 23:54:56,379 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-31 23:54:56,379 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-31 23:54:56,380 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-31 23:54:56,384 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-31 23:54:56,385 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-31 23:54:56,386 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-31 23:54:56,386 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-31 23:54:56,386 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-31 23:54:56,386 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 23:54:56,387 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 23:54:56,388 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 23:54:56,389 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-03-31 23:54:56,419 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 23:54:56,420 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 23:54:56,420 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 23:54:56,420 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 23:54:56,421 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 23:54:56,421 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 23:54:56,422 INFO L138 SettingsManager]: * User list type=DISABLED [2023-03-31 23:54:56,422 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-03-31 23:54:56,422 INFO L138 SettingsManager]: * Explicit value domain=true [2023-03-31 23:54:56,422 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-03-31 23:54:56,423 INFO L138 SettingsManager]: * Octagon Domain=false [2023-03-31 23:54:56,423 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-03-31 23:54:56,423 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-03-31 23:54:56,423 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-03-31 23:54:56,423 INFO L138 SettingsManager]: * Interval Domain=false [2023-03-31 23:54:56,424 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-03-31 23:54:56,424 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-03-31 23:54:56,424 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-03-31 23:54:56,424 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 23:54:56,425 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 23:54:56,425 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 23:54:56,425 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 23:54:56,425 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 23:54:56,425 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 23:54:56,425 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 23:54:56,426 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 23:54:56,426 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 23:54:56,426 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 23:54:56,426 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 23:54:56,426 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 23:54:56,426 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 23:54:56,427 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 23:54:56,427 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 23:54:56,427 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 23:54:56,427 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-03-31 23:54:56,427 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 23:54:56,427 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 23:54:56,428 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-03-31 23:54:56,428 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 23:54:56,428 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 23:54:56,428 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-03-31 23:54:56,428 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> IntervalDomain [2023-03-31 23:54:56,640 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 23:54:56,661 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 23:54:56,663 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 23:54:56,665 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 23:54:56,665 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 23:54:56,666 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec3_product44.cil.c [2023-03-31 23:54:57,853 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 23:54:58,081 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 23:54:58,082 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product44.cil.c [2023-03-31 23:54:58,092 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ab59a0d2/6f30b1126d4744f194a7a5aae9dc57ea/FLAGa888fcac2 [2023-03-31 23:54:58,107 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ab59a0d2/6f30b1126d4744f194a7a5aae9dc57ea [2023-03-31 23:54:58,109 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 23:54:58,111 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 23:54:58,112 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 23:54:58,112 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 23:54:58,115 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 23:54:58,117 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 11:54:58" (1/1) ... [2023-03-31 23:54:58,118 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67a856fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:54:58, skipping insertion in model container [2023-03-31 23:54:58,118 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 11:54:58" (1/1) ... [2023-03-31 23:54:58,124 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 23:54:58,176 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 23:54:58,328 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product44.cil.c[5279,5292] [2023-03-31 23:54:58,423 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 23:54:58,443 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 23:54:58,479 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product44.cil.c[5279,5292] [2023-03-31 23:54:58,533 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 23:54:58,553 INFO L208 MainTranslator]: Completed translation [2023-03-31 23:54:58,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:54:58 WrapperNode [2023-03-31 23:54:58,554 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 23:54:58,555 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 23:54:58,555 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 23:54:58,555 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 23:54:58,566 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:54:58" (1/1) ... [2023-03-31 23:54:58,567 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:54:58" (1/1) ... [2023-03-31 23:54:58,584 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:54:58" (1/1) ... [2023-03-31 23:54:58,584 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:54:58" (1/1) ... [2023-03-31 23:54:58,612 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:54:58" (1/1) ... [2023-03-31 23:54:58,619 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:54:58" (1/1) ... [2023-03-31 23:54:58,622 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:54:58" (1/1) ... [2023-03-31 23:54:58,625 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:54:58" (1/1) ... [2023-03-31 23:54:58,628 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 23:54:58,629 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 23:54:58,629 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 23:54:58,629 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 23:54:58,630 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:54:58" (1/1) ... [2023-03-31 23:54:58,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 23:54:58,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 23:54:58,661 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-03-31 23:54:58,670 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-03-31 23:54:58,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 23:54:58,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 23:54:58,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2023-03-31 23:54:58,702 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 23:54:58,704 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-03-31 23:54:58,704 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2023-03-31 23:54:58,704 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2023-03-31 23:54:58,704 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2023-03-31 23:54:58,704 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 23:54:58,705 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2023-03-31 23:54:58,705 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2023-03-31 23:54:58,705 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2023-03-31 23:54:58,705 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2023-03-31 23:54:58,705 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2023-03-31 23:54:58,705 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2023-03-31 23:54:58,705 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2023-03-31 23:54:58,705 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2023-03-31 23:54:58,706 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2023-03-31 23:54:58,706 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2023-03-31 23:54:58,706 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2023-03-31 23:54:58,706 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2023-03-31 23:54:58,706 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-03-31 23:54:58,706 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2023-03-31 23:54:58,706 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2023-03-31 23:54:58,706 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2023-03-31 23:54:58,707 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2023-03-31 23:54:58,707 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2023-03-31 23:54:58,707 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2023-03-31 23:54:58,707 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-03-31 23:54:58,707 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2023-03-31 23:54:58,707 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2023-03-31 23:54:58,707 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2023-03-31 23:54:58,707 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2023-03-31 23:54:58,707 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2023-03-31 23:54:58,708 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2023-03-31 23:54:58,708 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2023-03-31 23:54:58,708 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2023-03-31 23:54:58,708 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2023-03-31 23:54:58,708 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2023-03-31 23:54:58,708 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2023-03-31 23:54:58,708 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2023-03-31 23:54:58,709 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 23:54:58,709 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 23:54:58,709 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 23:54:58,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 23:54:58,710 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-03-31 23:54:58,710 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2023-03-31 23:54:58,711 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-03-31 23:54:58,711 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-03-31 23:54:58,711 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2023-03-31 23:54:58,711 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2023-03-31 23:54:58,711 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2023-03-31 23:54:58,711 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2023-03-31 23:54:58,711 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2023-03-31 23:54:58,712 INFO L130 BoogieDeclarations]: Found specification of procedure test [2023-03-31 23:54:58,712 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2023-03-31 23:54:58,713 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2023-03-31 23:54:58,713 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2023-03-31 23:54:58,713 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2023-03-31 23:54:58,714 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 23:54:58,714 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-03-31 23:54:58,714 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2023-03-31 23:54:58,714 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2023-03-31 23:54:58,714 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2023-03-31 23:54:58,715 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2023-03-31 23:54:58,715 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2023-03-31 23:54:58,715 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2023-03-31 23:54:58,715 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2023-03-31 23:54:58,715 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2023-03-31 23:54:58,715 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-03-31 23:54:58,715 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-03-31 23:54:58,715 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2023-03-31 23:54:58,715 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-03-31 23:54:58,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-03-31 23:54:58,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 23:54:58,716 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-03-31 23:54:58,716 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2023-03-31 23:54:58,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 23:54:58,717 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2023-03-31 23:54:58,717 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2023-03-31 23:54:58,717 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 23:54:58,717 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2023-03-31 23:54:58,717 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2023-03-31 23:54:58,718 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2023-03-31 23:54:58,718 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2023-03-31 23:54:58,718 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2023-03-31 23:54:58,718 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2023-03-31 23:54:58,719 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2023-03-31 23:54:58,719 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2023-03-31 23:54:58,719 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2023-03-31 23:54:58,719 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2023-03-31 23:54:58,719 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2023-03-31 23:54:58,719 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2023-03-31 23:54:58,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 23:54:58,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 23:54:58,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 23:54:58,900 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 23:54:58,903 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 23:54:59,433 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 23:54:59,606 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 23:54:59,607 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-03-31 23:54:59,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 11:54:59 BoogieIcfgContainer [2023-03-31 23:54:59,611 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 23:54:59,613 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 23:54:59,614 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 23:54:59,617 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 23:54:59,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 11:54:58" (1/3) ... [2023-03-31 23:54:59,618 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d518e98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 11:54:59, skipping insertion in model container [2023-03-31 23:54:59,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:54:58" (2/3) ... [2023-03-31 23:54:59,618 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d518e98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 11:54:59, skipping insertion in model container [2023-03-31 23:54:59,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 11:54:59" (3/3) ... [2023-03-31 23:54:59,623 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product44.cil.c [2023-03-31 23:54:59,638 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 23:54:59,638 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 23:54:59,690 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 23:54:59,695 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;@209df34e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-03-31 23:54:59,696 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 23:54:59,700 INFO L276 IsEmpty]: Start isEmpty. Operand has 149 states, 69 states have (on average 1.2753623188405796) internal successors, (88), 83 states have internal predecessors, (88), 47 states have call successors, (47), 30 states have call predecessors, (47), 30 states have return successors, (47), 44 states have call predecessors, (47), 47 states have call successors, (47) [2023-03-31 23:54:59,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-03-31 23:54:59,712 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:54:59,713 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:54:59,713 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:54:59,717 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:54:59,718 INFO L85 PathProgramCache]: Analyzing trace with hash 579219193, now seen corresponding path program 1 times [2023-03-31 23:54:59,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:54:59,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240419231] [2023-03-31 23:54:59,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:54:59,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:54:59,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:54:59,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 23:54:59,981 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:54:59,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240419231] [2023-03-31 23:54:59,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240419231] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:54:59,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 23:54:59,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-03-31 23:54:59,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135649449] [2023-03-31 23:54:59,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:54:59,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-03-31 23:54:59,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:55:00,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-03-31 23:55:00,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-03-31 23:55:00,036 INFO L87 Difference]: Start difference. First operand has 149 states, 69 states have (on average 1.2753623188405796) internal successors, (88), 83 states have internal predecessors, (88), 47 states have call successors, (47), 30 states have call predecessors, (47), 30 states have return successors, (47), 44 states have call predecessors, (47), 47 states have call successors, (47) Second operand has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-03-31 23:55:00,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:55:00,138 INFO L93 Difference]: Finished difference Result 231 states and 278 transitions. [2023-03-31 23:55:00,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-03-31 23:55:00,141 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 47 [2023-03-31 23:55:00,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:55:00,151 INFO L225 Difference]: With dead ends: 231 [2023-03-31 23:55:00,151 INFO L226 Difference]: Without dead ends: 116 [2023-03-31 23:55:00,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-03-31 23:55:00,160 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 23:55:00,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 126 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 23:55:00,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2023-03-31 23:55:00,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2023-03-31 23:55:00,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 60 states have (on average 1.2333333333333334) internal successors, (74), 71 states have internal predecessors, (74), 32 states have call successors, (32), 28 states have call predecessors, (32), 23 states have return successors, (27), 24 states have call predecessors, (27), 27 states have call successors, (27) [2023-03-31 23:55:00,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 133 transitions. [2023-03-31 23:55:00,212 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 133 transitions. Word has length 47 [2023-03-31 23:55:00,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:55:00,213 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 133 transitions. [2023-03-31 23:55:00,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-03-31 23:55:00,213 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 133 transitions. [2023-03-31 23:55:00,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-03-31 23:55:00,216 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:55:00,216 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:55:00,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 23:55:00,219 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:55:00,220 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:55:00,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1219296168, now seen corresponding path program 1 times [2023-03-31 23:55:00,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:55:00,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002097489] [2023-03-31 23:55:00,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:55:00,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:55:00,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:55:00,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 23:55:00,330 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:55:00,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002097489] [2023-03-31 23:55:00,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002097489] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:55:00,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 23:55:00,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-03-31 23:55:00,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156548227] [2023-03-31 23:55:00,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:55:00,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-31 23:55:00,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:55:00,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-31 23:55:00,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-31 23:55:00,335 INFO L87 Difference]: Start difference. First operand 116 states and 133 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-03-31 23:55:00,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:55:00,406 INFO L93 Difference]: Finished difference Result 177 states and 202 transitions. [2023-03-31 23:55:00,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-31 23:55:00,408 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 48 [2023-03-31 23:55:00,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:55:00,410 INFO L225 Difference]: With dead ends: 177 [2023-03-31 23:55:00,410 INFO L226 Difference]: Without dead ends: 108 [2023-03-31 23:55:00,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-31 23:55:00,412 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 11 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-31 23:55:00,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 195 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 23:55:00,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2023-03-31 23:55:00,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2023-03-31 23:55:00,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 55 states have (on average 1.2363636363636363) internal successors, (68), 66 states have internal predecessors, (68), 29 states have call successors, (29), 27 states have call predecessors, (29), 23 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2023-03-31 23:55:00,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 122 transitions. [2023-03-31 23:55:00,428 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 122 transitions. Word has length 48 [2023-03-31 23:55:00,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:55:00,429 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 122 transitions. [2023-03-31 23:55:00,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-03-31 23:55:00,430 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 122 transitions. [2023-03-31 23:55:00,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-03-31 23:55:00,438 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:55:00,439 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] [2023-03-31 23:55:00,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-31 23:55:00,439 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:55:00,441 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:55:00,441 INFO L85 PathProgramCache]: Analyzing trace with hash -768180482, now seen corresponding path program 1 times [2023-03-31 23:55:00,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:55:00,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720317216] [2023-03-31 23:55:00,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:55:00,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:55:00,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:55:00,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 23:55:00,666 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:55:00,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720317216] [2023-03-31 23:55:00,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720317216] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:55:00,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 23:55:00,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-03-31 23:55:00,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052385667] [2023-03-31 23:55:00,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:55:00,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-03-31 23:55:00,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:55:00,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-03-31 23:55:00,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-03-31 23:55:00,668 INFO L87 Difference]: Start difference. First operand 108 states and 122 transitions. Second operand has 7 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 4 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-03-31 23:55:01,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:55:01,019 INFO L93 Difference]: Finished difference Result 330 states and 388 transitions. [2023-03-31 23:55:01,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 23:55:01,020 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 4 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 52 [2023-03-31 23:55:01,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:55:01,028 INFO L225 Difference]: With dead ends: 330 [2023-03-31 23:55:01,028 INFO L226 Difference]: Without dead ends: 244 [2023-03-31 23:55:01,035 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 [2023-03-31 23:55:01,037 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 247 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-03-31 23:55:01,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 488 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-03-31 23:55:01,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2023-03-31 23:55:01,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 222. [2023-03-31 23:55:01,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 121 states have (on average 1.2644628099173554) internal successors, (153), 140 states have internal predecessors, (153), 54 states have call successors, (54), 50 states have call predecessors, (54), 46 states have return successors, (51), 46 states have call predecessors, (51), 50 states have call successors, (51) [2023-03-31 23:55:01,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 258 transitions. [2023-03-31 23:55:01,072 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 258 transitions. Word has length 52 [2023-03-31 23:55:01,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:55:01,072 INFO L495 AbstractCegarLoop]: Abstraction has 222 states and 258 transitions. [2023-03-31 23:55:01,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 4 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-03-31 23:55:01,072 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 258 transitions. [2023-03-31 23:55:01,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-03-31 23:55:01,074 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:55:01,074 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:55:01,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-03-31 23:55:01,074 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:55:01,075 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:55:01,075 INFO L85 PathProgramCache]: Analyzing trace with hash -2043369337, now seen corresponding path program 1 times [2023-03-31 23:55:01,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:55:01,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592836783] [2023-03-31 23:55:01,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:55:01,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:55:01,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:55:01,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 23:55:01,290 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:55:01,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592836783] [2023-03-31 23:55:01,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592836783] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:55:01,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 23:55:01,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-03-31 23:55:01,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580651478] [2023-03-31 23:55:01,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:55:01,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 23:55:01,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:55:01,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 23:55:01,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 23:55:01,293 INFO L87 Difference]: Start difference. First operand 222 states and 258 transitions. Second operand has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-03-31 23:55:01,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:55:01,450 INFO L93 Difference]: Finished difference Result 604 states and 727 transitions. [2023-03-31 23:55:01,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 23:55:01,450 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 56 [2023-03-31 23:55:01,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:55:01,453 INFO L225 Difference]: With dead ends: 604 [2023-03-31 23:55:01,453 INFO L226 Difference]: Without dead ends: 404 [2023-03-31 23:55:01,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-03-31 23:55:01,461 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 79 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 23:55:01,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 458 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 23:55:01,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2023-03-31 23:55:01,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 386. [2023-03-31 23:55:01,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 217 states have (on average 1.2672811059907834) internal successors, (275), 248 states have internal predecessors, (275), 90 states have call successors, (90), 82 states have call predecessors, (90), 78 states have return successors, (92), 78 states have call predecessors, (92), 86 states have call successors, (92) [2023-03-31 23:55:01,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 457 transitions. [2023-03-31 23:55:01,519 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 457 transitions. Word has length 56 [2023-03-31 23:55:01,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:55:01,520 INFO L495 AbstractCegarLoop]: Abstraction has 386 states and 457 transitions. [2023-03-31 23:55:01,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-03-31 23:55:01,520 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 457 transitions. [2023-03-31 23:55:01,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-03-31 23:55:01,524 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:55:01,524 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:55:01,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-03-31 23:55:01,524 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:55:01,525 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:55:01,525 INFO L85 PathProgramCache]: Analyzing trace with hash 587796752, now seen corresponding path program 1 times [2023-03-31 23:55:01,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:55:01,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835080997] [2023-03-31 23:55:01,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:55:01,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:55:01,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-03-31 23:55:01,554 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-03-31 23:55:01,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-03-31 23:55:01,601 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-03-31 23:55:01,601 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-03-31 23:55:01,602 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-03-31 23:55:01,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-03-31 23:55:01,607 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-03-31 23:55:01,610 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-03-31 23:55:01,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.03 11:55:01 BoogieIcfgContainer [2023-03-31 23:55:01,664 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-03-31 23:55:01,665 INFO L158 Benchmark]: Toolchain (without parser) took 3554.36ms. Allocated memory was 196.1MB in the beginning and 235.9MB in the end (delta: 39.8MB). Free memory was 148.2MB in the beginning and 92.1MB in the end (delta: 56.2MB). Peak memory consumption was 97.1MB. Max. memory is 8.0GB. [2023-03-31 23:55:01,665 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 196.1MB. Free memory is still 145.3MB. There was no memory consumed. Max. memory is 8.0GB. [2023-03-31 23:55:01,665 INFO L158 Benchmark]: CACSL2BoogieTranslator took 442.56ms. Allocated memory is still 196.1MB. Free memory was 148.0MB in the beginning and 129.6MB in the end (delta: 18.4MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2023-03-31 23:55:01,666 INFO L158 Benchmark]: Boogie Preprocessor took 73.27ms. Allocated memory is still 196.1MB. Free memory was 129.6MB in the beginning and 125.9MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-03-31 23:55:01,666 INFO L158 Benchmark]: RCFGBuilder took 981.63ms. Allocated memory was 196.1MB in the beginning and 235.9MB in the end (delta: 39.8MB). Free memory was 125.9MB in the beginning and 167.6MB in the end (delta: -41.7MB). Peak memory consumption was 30.9MB. Max. memory is 8.0GB. [2023-03-31 23:55:01,666 INFO L158 Benchmark]: TraceAbstraction took 2051.20ms. Allocated memory is still 235.9MB. Free memory was 167.1MB in the beginning and 92.1MB in the end (delta: 75.0MB). Peak memory consumption was 74.5MB. Max. memory is 8.0GB. [2023-03-31 23:55:01,670 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 196.1MB. Free memory is still 145.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 442.56ms. Allocated memory is still 196.1MB. Free memory was 148.0MB in the beginning and 129.6MB in the end (delta: 18.4MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * Boogie Preprocessor took 73.27ms. Allocated memory is still 196.1MB. Free memory was 129.6MB in the beginning and 125.9MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 981.63ms. Allocated memory was 196.1MB in the beginning and 235.9MB in the end (delta: 39.8MB). Free memory was 125.9MB in the beginning and 167.6MB in the end (delta: -41.7MB). Peak memory consumption was 30.9MB. Max. memory is 8.0GB. * TraceAbstraction took 2051.20ms. Allocated memory is still 235.9MB. Free memory was 167.1MB in the beginning and 92.1MB in the end (delta: 75.0MB). Peak memory consumption was 74.5MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 328]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L50] int cleanupTimeShifts = 4; [L195] int waterLevel = 1; [L196] int methaneLevelCritical = 0; [L502] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L703] int pumpRunning = 0; [L704] int systemActive = 1; [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] [L315] int retValue_acc ; [L318] retValue_acc = 1 [L319] 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] [L897] int splverifierCounter ; [L898] int tmp ; [L899] int tmp___0 ; [L900] int tmp___1 ; [L901] int tmp___2 ; [L904] 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] [L906] 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] [L908] COND TRUE splverifierCounter < 4 [L914] tmp = __VERIFIER_nondet_int() [L916] 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] [L918] 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] [L213] COND TRUE waterLevel < 2 [L214] waterLevel = waterLevel + 1 [L918] 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] [L924] tmp___0 = __VERIFIER_nondet_int() [L926] COND FALSE !(\read(tmp___0)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, waterLevel=2] [L934] tmp___2 = __VERIFIER_nondet_int() [L936] COND FALSE !(\read(tmp___2)) [L942] tmp___1 = __VERIFIER_nondet_int() [L944] COND TRUE \read(tmp___1) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___1=1, tmp___2=0, waterLevel=2] [L946] CALL stopSystem() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L876] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L883] systemActive = 0 [L946] RET stopSystem() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=0, tmp=1, tmp___0=0, tmp___1=1, tmp___2=0, waterLevel=2] [L953] CALL timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L710] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L717] COND FALSE !(\read(systemActive)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L725] CALL __utac_acc__Specification3_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L159] int tmp ; [L160] int tmp___0 ; [L161] int tmp___1 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L165] CALL, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L234] int retValue_acc ; [L237] retValue_acc = methaneLevelCritical [L238] return (retValue_acc); [L165] RET, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=0, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L165] tmp = isMethaneLevelCritical() [L167] COND FALSE !(\read(tmp)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, tmp=0, waterLevel=2] [L171] CALL, EXPR getWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L266] int retValue_acc ; [L269] retValue_acc = waterLevel [L270] return (retValue_acc); [L171] RET, EXPR getWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, getWaterLevel()=2, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, tmp=0, waterLevel=2] [L171] tmp___0 = getWaterLevel() [L173] COND TRUE tmp___0 == 2 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, tmp=0, tmp___0=2, waterLevel=2] [L175] CALL, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L809] int retValue_acc ; [L812] retValue_acc = pumpRunning [L813] return (retValue_acc); [L175] RET, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isPumpRunning()=0, methaneLevelCritical=0, pumpRunning=0, systemActive=0, tmp=0, tmp___0=2, waterLevel=2] [L175] tmp___1 = isPumpRunning() [L177] COND FALSE !(\read(tmp___1)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, tmp=0, tmp___0=2, tmp___1=0, waterLevel=2] [L181] CALL __automaton_fail() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L328] reach_error() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 41 procedures, 188 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.9s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 344 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 337 mSDsluCounter, 1267 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 804 mSDsCounter, 55 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 444 IncrementalHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 55 mSolverCounterUnsat, 463 mSDtfsCounter, 444 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=386occurred in iteration=4, InterpolantAutomatonStates: 19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 40 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 262 NumberOfCodeBlocks, 262 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 199 ConstructedInterpolants, 0 QuantifiedInterpolants, 332 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-03-31 23:55:01,685 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...