/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product14.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 05:17:46,480 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 05:17:46,484 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 05:17:46,520 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 05:17:46,522 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 05:17:46,530 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 05:17:46,532 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 05:17:46,535 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 05:17:46,538 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 05:17:46,540 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 05:17:46,541 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 05:17:46,542 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 05:17:46,542 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 05:17:46,545 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 05:17:46,547 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 05:17:46,549 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 05:17:46,550 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 05:17:46,552 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 05:17:46,553 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 05:17:46,561 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 05:17:46,563 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 05:17:46,564 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 05:17:46,565 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 05:17:46,566 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 05:17:46,577 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 05:17:46,581 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 05:17:46,581 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 05:17:46,582 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 05:17:46,582 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 05:17:46,586 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 05:17:46,586 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 05:17:46,587 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 05:17:46,590 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 05:17:46,591 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 05:17:46,594 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 05:17:46,594 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 05:17:46,595 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 05:17:46,595 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 05:17:46,595 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 05:17:46,596 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 05:17:46,596 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 05:17:46,598 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-22 05:17:46,625 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 05:17:46,625 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 05:17:46,627 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 05:17:46,627 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 05:17:46,627 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 05:17:46,627 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 05:17:46,627 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 05:17:46,628 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 05:17:46,628 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 05:17:46,628 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 05:17:46,628 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 05:17:46,628 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 05:17:46,628 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 05:17:46,629 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 05:17:46,629 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 05:17:46,629 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 05:17:46,629 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 05:17:46,629 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 05:17:46,630 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 05:17:46,630 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 05:17:46,630 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 05:17:46,630 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 05:17:46,630 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 05:17:46,631 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 05:17:46,631 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 05:17:46,631 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 05:17:46,631 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 05:17:46,631 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 05:17:46,631 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 05:17:46,632 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-08-22 05:17:46,932 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 05:17:46,949 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 05:17:46,954 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 05:17:46,956 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 05:17:46,956 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 05:17:46,957 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product14.cil.c [2020-08-22 05:17:47,022 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/35552ec9d/e8ee6bca66a24f6295e5ceab2defc203/FLAG8731f9d16 [2020-08-22 05:17:47,616 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 05:17:47,617 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product14.cil.c [2020-08-22 05:17:47,631 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/35552ec9d/e8ee6bca66a24f6295e5ceab2defc203/FLAG8731f9d16 [2020-08-22 05:17:47,888 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/35552ec9d/e8ee6bca66a24f6295e5ceab2defc203 [2020-08-22 05:17:47,899 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 05:17:47,901 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 05:17:47,903 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 05:17:47,904 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 05:17:47,907 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 05:17:47,908 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:17:47" (1/1) ... [2020-08-22 05:17:47,912 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59f61d05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:17:47, skipping insertion in model container [2020-08-22 05:17:47,913 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:17:47" (1/1) ... [2020-08-22 05:17:47,921 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 05:17:47,964 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 05:17:48,398 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 05:17:48,412 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 05:17:48,490 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 05:17:48,525 INFO L208 MainTranslator]: Completed translation [2020-08-22 05:17:48,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:17:48 WrapperNode [2020-08-22 05:17:48,526 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 05:17:48,527 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 05:17:48,527 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 05:17:48,527 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 05:17:48,541 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:17:48" (1/1) ... [2020-08-22 05:17:48,541 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:17:48" (1/1) ... [2020-08-22 05:17:48,560 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:17:48" (1/1) ... [2020-08-22 05:17:48,561 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:17:48" (1/1) ... [2020-08-22 05:17:48,593 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:17:48" (1/1) ... [2020-08-22 05:17:48,603 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:17:48" (1/1) ... [2020-08-22 05:17:48,611 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:17:48" (1/1) ... [2020-08-22 05:17:48,627 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 05:17:48,627 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 05:17:48,627 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 05:17:48,627 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 05:17:48,628 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:17:48" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 05:17:48,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 05:17:48,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 05:17:48,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 05:17:48,698 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 05:17:48,698 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 05:17:48,699 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 05:17:48,699 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 05:17:48,699 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 05:17:48,699 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-22 05:17:48,700 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 05:17:48,700 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-22 05:17:48,700 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 05:17:48,700 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__base [2020-08-22 05:17:48,701 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 05:17:48,701 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 05:17:48,702 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 05:17:48,702 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 05:17:48,702 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 05:17:48,703 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-22 05:17:48,703 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 05:17:48,703 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 05:17:48,704 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 05:17:48,704 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 05:17:48,704 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 05:17:48,705 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 05:17:48,706 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 05:17:48,706 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 05:17:48,707 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 05:17:48,707 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 05:17:48,707 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 05:17:48,707 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 05:17:48,708 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 05:17:48,708 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 05:17:48,708 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 05:17:48,708 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 05:17:48,708 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 05:17:48,708 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 05:17:48,709 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 05:17:48,709 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 05:17:48,709 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 05:17:48,709 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 05:17:48,709 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 05:17:48,709 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 05:17:48,710 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 05:17:48,710 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 05:17:48,710 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 05:17:48,710 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 05:17:48,710 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 05:17:48,710 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-22 05:17:48,710 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 05:17:48,710 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 05:17:48,711 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 05:17:48,711 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 05:17:48,712 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 05:17:48,712 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 05:17:48,713 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-22 05:17:48,713 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 05:17:48,713 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-22 05:17:48,713 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 05:17:48,713 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__base [2020-08-22 05:17:48,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 05:17:48,713 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 05:17:48,714 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 05:17:48,714 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 05:17:48,714 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 05:17:48,714 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 05:17:48,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 05:17:48,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 05:17:48,714 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 05:17:48,715 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 05:17:48,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 05:17:48,715 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 05:17:48,716 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 05:17:48,716 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 05:17:48,716 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 05:17:48,717 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 05:17:48,717 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 05:17:48,718 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 05:17:48,718 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 05:17:48,718 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 05:17:48,718 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 05:17:48,718 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 05:17:48,719 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 05:17:48,719 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 05:17:48,719 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 05:17:48,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 05:17:48,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 05:17:48,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 05:17:49,743 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 05:17:49,743 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 05:17:49,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:17:49 BoogieIcfgContainer [2020-08-22 05:17:49,749 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 05:17:49,750 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 05:17:49,750 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 05:17:49,753 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 05:17:49,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 05:17:47" (1/3) ... [2020-08-22 05:17:49,755 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37889097 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:17:49, skipping insertion in model container [2020-08-22 05:17:49,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:17:48" (2/3) ... [2020-08-22 05:17:49,755 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37889097 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:17:49, skipping insertion in model container [2020-08-22 05:17:49,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:17:49" (3/3) ... [2020-08-22 05:17:49,757 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product14.cil.c [2020-08-22 05:17:49,768 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 05:17:49,776 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 05:17:49,790 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 05:17:49,814 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 05:17:49,815 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 05:17:49,815 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 05:17:49,815 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 05:17:49,816 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 05:17:49,816 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 05:17:49,816 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 05:17:49,816 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 05:17:49,838 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states. [2020-08-22 05:17:49,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-22 05:17:49,848 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:17:49,850 INFO L422 BasicCegarLoop]: 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] [2020-08-22 05:17:49,850 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:17:49,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:17:49,857 INFO L82 PathProgramCache]: Analyzing trace with hash 940922037, now seen corresponding path program 1 times [2020-08-22 05:17:49,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:17:49,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [511870852] [2020-08-22 05:17:49,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:17:50,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:50,561 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:17:50,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:17:50,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:50,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:17:50,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:50,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:17:50,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:50,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:17:50,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:50,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:17:50,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:50,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 05:17:50,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:50,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 05:17:50,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:50,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 05:17:50,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:50,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:17:50,705 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [511870852] [2020-08-22 05:17:50,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:17:50,708 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 05:17:50,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444945698] [2020-08-22 05:17:50,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 05:17:50,715 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:17:50,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 05:17:50,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 05:17:50,735 INFO L87 Difference]: Start difference. First operand 160 states. Second operand 3 states. [2020-08-22 05:17:51,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:17:51,761 INFO L93 Difference]: Finished difference Result 258 states and 341 transitions. [2020-08-22 05:17:51,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 05:17:51,763 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-22 05:17:51,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:17:51,777 INFO L225 Difference]: With dead ends: 258 [2020-08-22 05:17:51,777 INFO L226 Difference]: Without dead ends: 140 [2020-08-22 05:17:51,781 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 05:17:51,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-08-22 05:17:51,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 109. [2020-08-22 05:17:51,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-08-22 05:17:51,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 127 transitions. [2020-08-22 05:17:51,863 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 127 transitions. Word has length 52 [2020-08-22 05:17:51,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:17:51,863 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 127 transitions. [2020-08-22 05:17:51,863 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 05:17:51,864 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 127 transitions. [2020-08-22 05:17:51,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-22 05:17:51,867 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:17:51,868 INFO L422 BasicCegarLoop]: 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] [2020-08-22 05:17:51,868 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 05:17:51,868 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:17:51,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:17:51,869 INFO L82 PathProgramCache]: Analyzing trace with hash -110013257, now seen corresponding path program 1 times [2020-08-22 05:17:51,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:17:51,869 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1190367787] [2020-08-22 05:17:51,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:17:51,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:52,209 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:17:52,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:17:52,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:52,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:17:52,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:52,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:17:52,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:52,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:17:52,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:52,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:17:52,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:52,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 05:17:52,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:52,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 05:17:52,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:52,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 05:17:52,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:52,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:17:52,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1190367787] [2020-08-22 05:17:52,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:17:52,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 05:17:52,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115316790] [2020-08-22 05:17:52,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 05:17:52,257 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:17:52,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 05:17:52,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 05:17:52,258 INFO L87 Difference]: Start difference. First operand 109 states and 127 transitions. Second operand 4 states. [2020-08-22 05:17:52,626 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:17:53,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:17:53,260 INFO L93 Difference]: Finished difference Result 187 states and 228 transitions. [2020-08-22 05:17:53,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 05:17:53,261 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-22 05:17:53,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:17:53,264 INFO L225 Difference]: With dead ends: 187 [2020-08-22 05:17:53,264 INFO L226 Difference]: Without dead ends: 124 [2020-08-22 05:17:53,266 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 05:17:53,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-08-22 05:17:53,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 100. [2020-08-22 05:17:53,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-08-22 05:17:53,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 115 transitions. [2020-08-22 05:17:53,303 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 115 transitions. Word has length 53 [2020-08-22 05:17:53,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:17:53,303 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 115 transitions. [2020-08-22 05:17:53,303 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 05:17:53,303 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 115 transitions. [2020-08-22 05:17:53,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-22 05:17:53,305 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:17:53,306 INFO L422 BasicCegarLoop]: 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] [2020-08-22 05:17:53,306 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 05:17:53,306 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:17:53,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:17:53,307 INFO L82 PathProgramCache]: Analyzing trace with hash -829955057, now seen corresponding path program 1 times [2020-08-22 05:17:53,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:17:53,307 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [706159003] [2020-08-22 05:17:53,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:17:53,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:53,625 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:17:53,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:17:53,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:53,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:17:53,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:53,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:17:53,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:53,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:17:53,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:53,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:17:53,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:53,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 05:17:53,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:53,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 05:17:53,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:53,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 05:17:53,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:53,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:17:53,742 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [706159003] [2020-08-22 05:17:53,742 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:17:53,742 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 05:17:53,743 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848587172] [2020-08-22 05:17:53,743 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 05:17:53,743 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:17:53,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 05:17:53,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 05:17:53,744 INFO L87 Difference]: Start difference. First operand 100 states and 115 transitions. Second operand 8 states. [2020-08-22 05:17:54,068 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:17:54,366 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:17:54,631 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:17:54,854 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:17:55,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:17:55,777 INFO L93 Difference]: Finished difference Result 200 states and 246 transitions. [2020-08-22 05:17:55,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 05:17:55,778 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-08-22 05:17:55,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:17:55,781 INFO L225 Difference]: With dead ends: 200 [2020-08-22 05:17:55,781 INFO L226 Difference]: Without dead ends: 124 [2020-08-22 05:17:55,783 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-22 05:17:55,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-08-22 05:17:55,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 100. [2020-08-22 05:17:55,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-08-22 05:17:55,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 114 transitions. [2020-08-22 05:17:55,812 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 114 transitions. Word has length 58 [2020-08-22 05:17:55,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:17:55,812 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 114 transitions. [2020-08-22 05:17:55,813 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 05:17:55,813 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 114 transitions. [2020-08-22 05:17:55,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-08-22 05:17:55,814 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:17:55,815 INFO L422 BasicCegarLoop]: 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] [2020-08-22 05:17:55,815 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 05:17:55,815 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:17:55,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:17:55,816 INFO L82 PathProgramCache]: Analyzing trace with hash -715130014, now seen corresponding path program 1 times [2020-08-22 05:17:55,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:17:55,816 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1824701535] [2020-08-22 05:17:55,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:17:55,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:56,134 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:17:56,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:17:56,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:56,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:17:56,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:56,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:17:56,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:56,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:17:56,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:56,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:17:56,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:56,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 05:17:56,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:56,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:17:56,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:56,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-22 05:17:56,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:56,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-22 05:17:56,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:56,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-22 05:17:56,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:56,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:17:56,248 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1824701535] [2020-08-22 05:17:56,249 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:17:56,249 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 05:17:56,249 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389636505] [2020-08-22 05:17:56,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 05:17:56,250 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:17:56,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 05:17:56,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 05:17:56,251 INFO L87 Difference]: Start difference. First operand 100 states and 114 transitions. Second operand 8 states. [2020-08-22 05:17:56,599 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:17:57,959 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:17:58,252 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:17:58,493 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:17:58,828 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:17:59,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:17:59,104 INFO L93 Difference]: Finished difference Result 299 states and 393 transitions. [2020-08-22 05:17:59,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 05:17:59,112 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 66 [2020-08-22 05:17:59,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:17:59,120 INFO L225 Difference]: With dead ends: 299 [2020-08-22 05:17:59,120 INFO L226 Difference]: Without dead ends: 223 [2020-08-22 05:17:59,125 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-22 05:17:59,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-08-22 05:17:59,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 174. [2020-08-22 05:17:59,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-08-22 05:17:59,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 205 transitions. [2020-08-22 05:17:59,190 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 205 transitions. Word has length 66 [2020-08-22 05:17:59,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:17:59,191 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 205 transitions. [2020-08-22 05:17:59,191 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 05:17:59,191 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 205 transitions. [2020-08-22 05:17:59,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-22 05:17:59,195 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:17:59,195 INFO L422 BasicCegarLoop]: 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] [2020-08-22 05:17:59,195 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 05:17:59,195 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:17:59,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:17:59,196 INFO L82 PathProgramCache]: Analyzing trace with hash 1329435240, now seen corresponding path program 1 times [2020-08-22 05:17:59,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:17:59,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [775468365] [2020-08-22 05:17:59,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:17:59,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:59,439 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:17:59,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:17:59,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:59,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:17:59,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:59,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:17:59,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:59,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:17:59,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:59,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:17:59,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:59,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-22 05:17:59,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:59,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 05:17:59,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:59,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:17:59,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:59,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 05:17:59,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:59,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-22 05:17:59,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:59,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-22 05:17:59,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:59,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:17:59,546 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [775468365] [2020-08-22 05:17:59,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:17:59,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 05:17:59,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492815719] [2020-08-22 05:17:59,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 05:17:59,551 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:17:59,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 05:17:59,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 05:17:59,554 INFO L87 Difference]: Start difference. First operand 174 states and 205 transitions. Second operand 6 states. [2020-08-22 05:17:59,849 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:18:00,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:18:00,431 INFO L93 Difference]: Finished difference Result 296 states and 363 transitions. [2020-08-22 05:18:00,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 05:18:00,432 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2020-08-22 05:18:00,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:18:00,434 INFO L225 Difference]: With dead ends: 296 [2020-08-22 05:18:00,434 INFO L226 Difference]: Without dead ends: 146 [2020-08-22 05:18:00,435 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-08-22 05:18:00,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-08-22 05:18:00,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 133. [2020-08-22 05:18:00,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-08-22 05:18:00,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 148 transitions. [2020-08-22 05:18:00,466 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 148 transitions. Word has length 70 [2020-08-22 05:18:00,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:18:00,466 INFO L479 AbstractCegarLoop]: Abstraction has 133 states and 148 transitions. [2020-08-22 05:18:00,466 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 05:18:00,467 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 148 transitions. [2020-08-22 05:18:00,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-22 05:18:00,468 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:18:00,468 INFO L422 BasicCegarLoop]: 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] [2020-08-22 05:18:00,468 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 05:18:00,468 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:18:00,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:18:00,469 INFO L82 PathProgramCache]: Analyzing trace with hash 1182747068, now seen corresponding path program 1 times [2020-08-22 05:18:00,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:18:00,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [589115017] [2020-08-22 05:18:00,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:18:00,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 05:18:00,527 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 05:18:00,527 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 05:18:00,531 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 05:18:00,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 05:18:00 BoogieIcfgContainer [2020-08-22 05:18:00,553 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 05:18:00,555 INFO L168 Benchmark]: Toolchain (without parser) took 12654.13 ms. Allocated memory was 140.5 MB in the beginning and 445.1 MB in the end (delta: 304.6 MB). Free memory was 101.2 MB in the beginning and 351.2 MB in the end (delta: -250.0 MB). Peak memory consumption was 54.6 MB. Max. memory is 7.1 GB. [2020-08-22 05:18:00,555 INFO L168 Benchmark]: CDTParser took 0.77 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 05:18:00,556 INFO L168 Benchmark]: CACSL2BoogieTranslator took 623.04 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 100.9 MB in the beginning and 173.4 MB in the end (delta: -72.4 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. [2020-08-22 05:18:00,557 INFO L168 Benchmark]: Boogie Preprocessor took 100.32 ms. Allocated memory is still 204.5 MB. Free memory was 173.4 MB in the beginning and 169.5 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. [2020-08-22 05:18:00,558 INFO L168 Benchmark]: RCFGBuilder took 1121.86 ms. Allocated memory was 204.5 MB in the beginning and 235.9 MB in the end (delta: 31.5 MB). Free memory was 169.5 MB in the beginning and 198.6 MB in the end (delta: -29.1 MB). Peak memory consumption was 82.7 MB. Max. memory is 7.1 GB. [2020-08-22 05:18:00,559 INFO L168 Benchmark]: TraceAbstraction took 10802.73 ms. Allocated memory was 235.9 MB in the beginning and 445.1 MB in the end (delta: 209.2 MB). Free memory was 198.6 MB in the beginning and 351.2 MB in the end (delta: -152.6 MB). Peak memory consumption was 56.6 MB. Max. memory is 7.1 GB. [2020-08-22 05:18:00,563 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.77 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 623.04 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 100.9 MB in the beginning and 173.4 MB in the end (delta: -72.4 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 100.32 ms. Allocated memory is still 204.5 MB. Free memory was 173.4 MB in the beginning and 169.5 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1121.86 ms. Allocated memory was 204.5 MB in the beginning and 235.9 MB in the end (delta: 31.5 MB). Free memory was 169.5 MB in the beginning and 198.6 MB in the end (delta: -29.1 MB). Peak memory consumption was 82.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 10802.73 ms. Allocated memory was 235.9 MB in the beginning and 445.1 MB in the end (delta: 209.2 MB). Free memory was 198.6 MB in the beginning and 351.2 MB in the end (delta: -152.6 MB). Peak memory consumption was 56.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 44]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L131] int pumpRunning = 0; [L132] int systemActive = 1; [L458] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L725] int cleanupTimeShifts = 4; [L821] int waterLevel = 1; [L822] int methaneLevelCritical = 0; [L798] int retValue_acc ; [L799] int tmp ; [L803] FCALL select_helpers() [L804] FCALL select_features() [L805] CALL, EXPR valid_product() [L78] int retValue_acc ; [L81] retValue_acc = 1 [L82] return (retValue_acc); [L805] RET, EXPR valid_product() [L805] tmp = valid_product() [L807] COND TRUE \read(tmp) [L809] FCALL setup() [L810] CALL runTest() [L792] CALL test() [L659] int splverifierCounter ; [L660] int tmp ; [L661] int tmp___0 ; [L662] int tmp___1 ; [L663] int tmp___2 ; [L666] splverifierCounter = 0 [L668] COND TRUE 1 [L670] COND TRUE splverifierCounter < 4 [L676] tmp = __VERIFIER_nondet_int() [L678] COND TRUE \read(tmp) [L680] CALL waterRise() [L839] COND TRUE waterLevel < 2 [L840] waterLevel = waterLevel + 1 [L680] RET waterRise() [L686] tmp___0 = __VERIFIER_nondet_int() [L688] COND FALSE !(\read(tmp___0)) [L696] tmp___2 = __VERIFIER_nondet_int() [L698] COND FALSE !(\read(tmp___2)) [L704] tmp___1 = __VERIFIER_nondet_int() [L706] COND TRUE \read(tmp___1) [L713] CALL timeShift() [L138] COND FALSE !(\read(pumpRunning)) [L145] COND TRUE \read(systemActive) [L147] CALL processEnvironment() [L167] int tmp ; [L170] COND FALSE !(\read(pumpRunning)) [L185] FCALL processEnvironment__wrappee__methaneQuery() [L147] RET processEnvironment() [L153] CALL __utac_acc__Specification3_spec__1() [L91] int tmp ; [L92] int tmp___0 ; [L93] int tmp___1 ; [L97] CALL, EXPR isMethaneLevelCritical() [L860] int retValue_acc ; [L863] retValue_acc = methaneLevelCritical [L864] return (retValue_acc); [L97] RET, EXPR isMethaneLevelCritical() [L97] tmp = isMethaneLevelCritical() [L99] COND FALSE !(\read(tmp)) [L103] CALL, EXPR getWaterLevel() [L892] int retValue_acc ; [L895] retValue_acc = waterLevel [L896] return (retValue_acc); [L103] RET, EXPR getWaterLevel() [L103] tmp___0 = getWaterLevel() [L105] COND TRUE tmp___0 == 2 [L107] CALL, EXPR isPumpRunning() [L236] int retValue_acc ; [L239] retValue_acc = pumpRunning [L240] return (retValue_acc); [L107] RET, EXPR isPumpRunning() [L107] tmp___1 = isPumpRunning() [L109] COND FALSE !(\read(tmp___1)) [L113] CALL __automaton_fail() [L44] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 37 procedures, 218 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 10.7s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 7.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 447 SDtfs, 739 SDslu, 239 SDs, 0 SdLazy, 1311 SolverSat, 526 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 134 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 3.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=174occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 5 MinimizatonAttempts, 141 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 369 NumberOfCodeBlocks, 369 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 294 ConstructedInterpolants, 0 QuantifiedInterpolants, 83938 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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! Received shutdown request...