/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=SMALLEST --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_product29.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 15:33:46,439 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 15:33:46,441 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 15:33:46,468 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 15:33:46,469 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 15:33:46,470 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 15:33:46,472 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 15:33:46,474 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 15:33:46,476 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 15:33:46,476 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 15:33:46,477 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 15:33:46,479 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 15:33:46,479 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 15:33:46,480 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 15:33:46,481 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 15:33:46,483 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 15:33:46,484 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 15:33:46,485 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 15:33:46,486 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 15:33:46,489 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 15:33:46,490 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 15:33:46,492 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 15:33:46,493 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 15:33:46,494 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 15:33:46,497 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 15:33:46,500 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 15:33:46,500 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 15:33:46,501 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 15:33:46,505 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 15:33:46,506 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 15:33:46,506 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 15:33:46,507 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 15:33:46,508 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 15:33:46,508 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 15:33:46,511 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 15:33:46,512 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 15:33:46,513 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 15:33:46,513 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 15:33:46,513 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 15:33:46,514 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 15:33:46,515 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 15:33:46,516 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 [2020-08-21 15:33:46,562 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 15:33:46,562 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 15:33:46,564 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 15:33:46,564 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 15:33:46,565 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 15:33:46,565 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 15:33:46,565 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 15:33:46,566 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 15:33:46,566 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 15:33:46,566 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 15:33:46,567 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 15:33:46,567 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 15:33:46,568 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 15:33:46,568 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 15:33:46,568 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 15:33:46,568 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 15:33:46,569 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 15:33:46,569 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 15:33:46,569 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 15:33:46,569 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 15:33:46,570 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 15:33:46,570 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 15:33:46,570 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 15:33:46,571 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 15:33:46,571 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 15:33:46,571 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 15:33:46,571 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 15:33:46,572 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 15:33:46,572 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 15:33:46,572 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=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-08-21 15:33:46,877 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 15:33:46,890 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 15:33:46,893 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 15:33:46,895 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 15:33:46,895 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 15:33:46,896 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product29.cil.c [2020-08-21 15:33:46,967 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/abe1b5977/be665630b7304400baeaa6e3e81d8871/FLAGa21b75fa9 [2020-08-21 15:33:47,529 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 15:33:47,530 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product29.cil.c [2020-08-21 15:33:47,545 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/abe1b5977/be665630b7304400baeaa6e3e81d8871/FLAGa21b75fa9 [2020-08-21 15:33:47,836 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/abe1b5977/be665630b7304400baeaa6e3e81d8871 [2020-08-21 15:33:47,845 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 15:33:47,848 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 15:33:47,849 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 15:33:47,849 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 15:33:47,853 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 15:33:47,854 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 03:33:47" (1/1) ... [2020-08-21 15:33:47,857 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30847a1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:33:47, skipping insertion in model container [2020-08-21 15:33:47,857 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 03:33:47" (1/1) ... [2020-08-21 15:33:47,865 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 15:33:47,932 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 15:33:48,480 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 15:33:48,494 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 15:33:48,570 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 15:33:48,604 INFO L208 MainTranslator]: Completed translation [2020-08-21 15:33:48,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:33:48 WrapperNode [2020-08-21 15:33:48,605 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 15:33:48,606 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 15:33:48,606 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 15:33:48,606 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 15:33:48,621 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:33:48" (1/1) ... [2020-08-21 15:33:48,621 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:33:48" (1/1) ... [2020-08-21 15:33:48,640 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:33:48" (1/1) ... [2020-08-21 15:33:48,641 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:33:48" (1/1) ... [2020-08-21 15:33:48,672 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:33:48" (1/1) ... [2020-08-21 15:33:48,683 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:33:48" (1/1) ... [2020-08-21 15:33:48,688 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:33:48" (1/1) ... [2020-08-21 15:33:48,695 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 15:33:48,696 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 15:33:48,696 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 15:33:48,696 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 15:33:48,697 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:33:48" (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 [2020-08-21 15:33:48,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 15:33:48,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 15:33:48,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 15:33:48,771 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-21 15:33:48,771 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 15:33:48,772 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 15:33:48,772 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 15:33:48,772 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 15:33:48,772 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 15:33:48,772 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 15:33:48,772 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-21 15:33:48,773 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 15:33:48,773 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 15:33:48,773 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 15:33:48,773 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 15:33:48,773 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 15:33:48,773 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 15:33:48,773 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 15:33:48,774 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 15:33:48,774 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 15:33:48,774 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 15:33:48,774 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 15:33:48,774 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 15:33:48,774 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 15:33:48,775 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 15:33:48,775 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 15:33:48,775 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 15:33:48,775 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 15:33:48,775 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 15:33:48,775 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-21 15:33:48,776 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 15:33:48,776 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-21 15:33:48,776 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 15:33:48,776 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 15:33:48,776 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 15:33:48,776 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 15:33:48,776 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 15:33:48,777 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-21 15:33:48,777 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 15:33:48,777 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 15:33:48,777 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 15:33:48,777 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 15:33:48,777 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 15:33:48,777 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 15:33:48,777 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 15:33:48,777 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 15:33:48,778 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-21 15:33:48,778 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 15:33:48,778 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 15:33:48,778 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 15:33:48,778 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 15:33:48,778 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-21 15:33:48,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 15:33:48,778 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 15:33:48,778 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 15:33:48,779 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 15:33:48,779 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 15:33:48,779 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 15:33:48,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 15:33:48,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 15:33:48,779 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 15:33:48,779 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 15:33:48,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 15:33:48,780 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 15:33:48,780 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 15:33:48,780 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 15:33:48,780 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 15:33:48,780 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 15:33:48,780 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 15:33:48,780 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 15:33:48,780 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 15:33:48,780 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 15:33:48,781 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 15:33:48,781 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 15:33:48,781 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 15:33:48,781 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 15:33:48,781 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 15:33:48,781 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 15:33:48,782 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 15:33:48,782 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 15:33:48,782 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 15:33:48,782 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 15:33:48,782 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 15:33:48,782 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 15:33:48,782 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 15:33:48,783 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-21 15:33:48,783 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-21 15:33:48,783 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 15:33:48,783 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-21 15:33:48,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 15:33:48,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 15:33:48,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 15:33:49,938 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 15:33:49,939 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 15:33:49,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 03:33:49 BoogieIcfgContainer [2020-08-21 15:33:49,945 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 15:33:49,946 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 15:33:49,946 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 15:33:49,950 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 15:33:49,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 03:33:47" (1/3) ... [2020-08-21 15:33:49,951 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@314fcf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 03:33:49, skipping insertion in model container [2020-08-21 15:33:49,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:33:48" (2/3) ... [2020-08-21 15:33:49,952 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@314fcf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 03:33:49, skipping insertion in model container [2020-08-21 15:33:49,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 03:33:49" (3/3) ... [2020-08-21 15:33:49,954 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product29.cil.c [2020-08-21 15:33:49,966 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 15:33:49,975 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 15:33:49,989 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 15:33:50,016 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 15:33:50,016 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 15:33:50,016 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 15:33:50,017 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 15:33:50,017 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 15:33:50,017 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 15:33:50,017 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 15:33:50,018 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 15:33:50,042 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states. [2020-08-21 15:33:50,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 15:33:50,054 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:33:50,055 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] [2020-08-21 15:33:50,055 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:33:50,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:33:50,062 INFO L82 PathProgramCache]: Analyzing trace with hash -720125183, now seen corresponding path program 1 times [2020-08-21 15:33:50,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:33:50,072 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [431904208] [2020-08-21 15:33:50,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:33:50,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:50,761 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:33:50,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:33:50,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:50,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:33:50,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:50,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:33:50,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:50,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:33:50,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:50,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:33:50,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:50,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 15:33:50,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:50,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 15:33:50,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:50,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 15:33:50,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:50,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:33:50,848 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [431904208] [2020-08-21 15:33:50,850 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:33:50,850 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 15:33:50,856 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495344448] [2020-08-21 15:33:50,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 15:33:50,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:33:50,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 15:33:50,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 15:33:50,883 INFO L87 Difference]: Start difference. First operand 176 states. Second operand 3 states. [2020-08-21 15:33:52,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:33:52,115 INFO L93 Difference]: Finished difference Result 291 states and 384 transitions. [2020-08-21 15:33:52,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 15:33:52,117 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-21 15:33:52,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:33:52,132 INFO L225 Difference]: With dead ends: 291 [2020-08-21 15:33:52,133 INFO L226 Difference]: Without dead ends: 157 [2020-08-21 15:33:52,138 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 15:33:52,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-08-21 15:33:52,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 125. [2020-08-21 15:33:52,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-08-21 15:33:52,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 148 transitions. [2020-08-21 15:33:52,226 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 148 transitions. Word has length 52 [2020-08-21 15:33:52,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:33:52,227 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 148 transitions. [2020-08-21 15:33:52,227 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 15:33:52,227 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 148 transitions. [2020-08-21 15:33:52,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-21 15:33:52,231 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:33:52,232 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] [2020-08-21 15:33:52,232 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 15:33:52,232 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:33:52,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:33:52,233 INFO L82 PathProgramCache]: Analyzing trace with hash -1479231386, now seen corresponding path program 1 times [2020-08-21 15:33:52,233 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:33:52,234 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [945460147] [2020-08-21 15:33:52,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:33:52,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:52,564 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:33:52,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:33:52,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:52,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:33:52,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:52,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:33:52,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:52,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:33:52,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:52,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:33:52,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:52,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 15:33:52,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:52,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 15:33:52,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:52,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 15:33:52,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:52,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:33:52,609 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [945460147] [2020-08-21 15:33:52,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:33:52,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 15:33:52,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939502406] [2020-08-21 15:33:52,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 15:33:52,612 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:33:52,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 15:33:52,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 15:33:52,613 INFO L87 Difference]: Start difference. First operand 125 states and 148 transitions. Second operand 4 states. [2020-08-21 15:33:53,038 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:33:53,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:33:53,816 INFO L93 Difference]: Finished difference Result 224 states and 275 transitions. [2020-08-21 15:33:53,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 15:33:53,817 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-21 15:33:53,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:33:53,823 INFO L225 Difference]: With dead ends: 224 [2020-08-21 15:33:53,823 INFO L226 Difference]: Without dead ends: 141 [2020-08-21 15:33:53,824 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 [2020-08-21 15:33:53,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-08-21 15:33:53,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 116. [2020-08-21 15:33:53,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-08-21 15:33:53,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 136 transitions. [2020-08-21 15:33:53,861 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 136 transitions. Word has length 53 [2020-08-21 15:33:53,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:33:53,862 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 136 transitions. [2020-08-21 15:33:53,862 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 15:33:53,862 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 136 transitions. [2020-08-21 15:33:53,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-21 15:33:53,864 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:33:53,864 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] [2020-08-21 15:33:53,865 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 15:33:53,865 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:33:53,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:33:53,865 INFO L82 PathProgramCache]: Analyzing trace with hash -162444823, now seen corresponding path program 1 times [2020-08-21 15:33:53,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:33:53,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [125572087] [2020-08-21 15:33:53,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:33:53,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:54,149 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:33:54,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:33:54,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:54,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:33:54,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:54,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:33:54,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:54,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:33:54,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:54,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:33:54,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:54,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 15:33:54,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:54,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 15:33:54,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:54,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 15:33:54,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:54,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:33:54,265 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [125572087] [2020-08-21 15:33:54,265 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:33:54,266 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 15:33:54,266 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960841588] [2020-08-21 15:33:54,267 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 15:33:54,267 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:33:54,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 15:33:54,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 15:33:54,268 INFO L87 Difference]: Start difference. First operand 116 states and 136 transitions. Second operand 8 states. [2020-08-21 15:33:54,651 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:33:54,936 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:33:55,177 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:33:55,426 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:33:56,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:33:56,575 INFO L93 Difference]: Finished difference Result 233 states and 289 transitions. [2020-08-21 15:33:56,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 15:33:56,576 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-21 15:33:56,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:33:56,578 INFO L225 Difference]: With dead ends: 233 [2020-08-21 15:33:56,578 INFO L226 Difference]: Without dead ends: 141 [2020-08-21 15:33:56,580 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-21 15:33:56,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-08-21 15:33:56,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 116. [2020-08-21 15:33:56,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-08-21 15:33:56,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 135 transitions. [2020-08-21 15:33:56,618 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 135 transitions. Word has length 57 [2020-08-21 15:33:56,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:33:56,618 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 135 transitions. [2020-08-21 15:33:56,618 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 15:33:56,619 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 135 transitions. [2020-08-21 15:33:56,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-21 15:33:56,621 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:33:56,622 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] [2020-08-21 15:33:56,622 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 15:33:56,622 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:33:56,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:33:56,622 INFO L82 PathProgramCache]: Analyzing trace with hash -524642989, now seen corresponding path program 1 times [2020-08-21 15:33:56,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:33:56,623 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2009666358] [2020-08-21 15:33:56,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:33:56,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:56,946 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:33:56,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:33:56,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:56,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:33:56,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:56,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:33:56,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:56,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:33:56,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:56,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:33:56,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:57,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 15:33:57,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:57,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:33:57,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:57,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:33:57,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:57,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 15:33:57,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:57,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 15:33:57,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:57,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-21 15:33:57,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:33:57,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:33:57,086 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2009666358] [2020-08-21 15:33:57,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:33:57,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 15:33:57,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277387099] [2020-08-21 15:33:57,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 15:33:57,088 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:33:57,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 15:33:57,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 15:33:57,090 INFO L87 Difference]: Start difference. First operand 116 states and 135 transitions. Second operand 8 states. [2020-08-21 15:33:57,469 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:33:58,975 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:33:59,254 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:33:59,509 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:33:59,825 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:34:00,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:34:00,213 INFO L93 Difference]: Finished difference Result 348 states and 456 transitions. [2020-08-21 15:34:00,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 15:34:00,215 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 70 [2020-08-21 15:34:00,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:34:00,219 INFO L225 Difference]: With dead ends: 348 [2020-08-21 15:34:00,220 INFO L226 Difference]: Without dead ends: 256 [2020-08-21 15:34:00,221 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-21 15:34:00,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2020-08-21 15:34:00,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 208. [2020-08-21 15:34:00,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2020-08-21 15:34:00,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 250 transitions. [2020-08-21 15:34:00,315 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 250 transitions. Word has length 70 [2020-08-21 15:34:00,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:34:00,317 INFO L479 AbstractCegarLoop]: Abstraction has 208 states and 250 transitions. [2020-08-21 15:34:00,317 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 15:34:00,317 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 250 transitions. [2020-08-21 15:34:00,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-08-21 15:34:00,322 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:34:00,323 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, 1, 1, 1, 1] [2020-08-21 15:34:00,323 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 15:34:00,323 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:34:00,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:34:00,324 INFO L82 PathProgramCache]: Analyzing trace with hash 691700877, now seen corresponding path program 1 times [2020-08-21 15:34:00,324 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:34:00,324 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [876551420] [2020-08-21 15:34:00,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:34:00,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:34:00,679 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:34:00,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:34:00,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:34:00,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:34:00,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:34:00,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:34:00,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:34:00,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:34:00,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:34:00,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:34:00,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:34:00,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 15:34:00,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:34:00,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 15:34:00,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:34:00,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:34:00,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:34:00,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:34:00,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:34:00,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 15:34:00,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:34:00,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-21 15:34:00,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:34:00,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-21 15:34:00,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:34:00,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:34:00,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [876551420] [2020-08-21 15:34:00,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:34:00,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 15:34:00,755 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499390296] [2020-08-21 15:34:00,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 15:34:00,756 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:34:00,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 15:34:00,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 15:34:00,757 INFO L87 Difference]: Start difference. First operand 208 states and 250 transitions. Second operand 6 states. [2020-08-21 15:34:01,088 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:34:01,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:34:01,599 INFO L93 Difference]: Finished difference Result 331 states and 413 transitions. [2020-08-21 15:34:01,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 15:34:01,601 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 74 [2020-08-21 15:34:01,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:34:01,603 INFO L225 Difference]: With dead ends: 331 [2020-08-21 15:34:01,603 INFO L226 Difference]: Without dead ends: 147 [2020-08-21 15:34:01,606 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-08-21 15:34:01,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-08-21 15:34:01,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 135. [2020-08-21 15:34:01,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-08-21 15:34:01,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 150 transitions. [2020-08-21 15:34:01,639 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 150 transitions. Word has length 74 [2020-08-21 15:34:01,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:34:01,640 INFO L479 AbstractCegarLoop]: Abstraction has 135 states and 150 transitions. [2020-08-21 15:34:01,640 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 15:34:01,640 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 150 transitions. [2020-08-21 15:34:01,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-08-21 15:34:01,641 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:34:01,641 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, 1, 1, 1, 1] [2020-08-21 15:34:01,641 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 15:34:01,642 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:34:01,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:34:01,642 INFO L82 PathProgramCache]: Analyzing trace with hash 35008173, now seen corresponding path program 1 times [2020-08-21 15:34:01,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:34:01,642 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [912088940] [2020-08-21 15:34:01,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:34:01,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 15:34:01,720 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 15:34:01,720 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 15:34:01,726 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 15:34:01,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 03:34:01 BoogieIcfgContainer [2020-08-21 15:34:01,763 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 15:34:01,766 INFO L168 Benchmark]: Toolchain (without parser) took 13917.43 ms. Allocated memory was 137.4 MB in the beginning and 432.5 MB in the end (delta: 295.2 MB). Free memory was 98.8 MB in the beginning and 123.1 MB in the end (delta: -24.4 MB). Peak memory consumption was 270.8 MB. Max. memory is 7.1 GB. [2020-08-21 15:34:01,768 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 137.4 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-08-21 15:34:01,774 INFO L168 Benchmark]: CACSL2BoogieTranslator took 756.86 ms. Allocated memory was 137.4 MB in the beginning and 202.9 MB in the end (delta: 65.5 MB). Free memory was 98.6 MB in the beginning and 167.7 MB in the end (delta: -69.1 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. [2020-08-21 15:34:01,774 INFO L168 Benchmark]: Boogie Preprocessor took 89.49 ms. Allocated memory is still 202.9 MB. Free memory was 167.7 MB in the beginning and 164.2 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 7.1 GB. [2020-08-21 15:34:01,775 INFO L168 Benchmark]: RCFGBuilder took 1249.21 ms. Allocated memory was 202.9 MB in the beginning and 231.7 MB in the end (delta: 28.8 MB). Free memory was 163.5 MB in the beginning and 193.9 MB in the end (delta: -30.4 MB). Peak memory consumption was 84.8 MB. Max. memory is 7.1 GB. [2020-08-21 15:34:01,776 INFO L168 Benchmark]: TraceAbstraction took 11816.80 ms. Allocated memory was 231.7 MB in the beginning and 432.5 MB in the end (delta: 200.8 MB). Free memory was 193.9 MB in the beginning and 123.1 MB in the end (delta: 70.7 MB). Peak memory consumption was 271.5 MB. Max. memory is 7.1 GB. [2020-08-21 15:34:01,788 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 137.4 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 756.86 ms. Allocated memory was 137.4 MB in the beginning and 202.9 MB in the end (delta: 65.5 MB). Free memory was 98.6 MB in the beginning and 167.7 MB in the end (delta: -69.1 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 89.49 ms. Allocated memory is still 202.9 MB. Free memory was 167.7 MB in the beginning and 164.2 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1249.21 ms. Allocated memory was 202.9 MB in the beginning and 231.7 MB in the end (delta: 28.8 MB). Free memory was 163.5 MB in the beginning and 193.9 MB in the end (delta: -30.4 MB). Peak memory consumption was 84.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 11816.80 ms. Allocated memory was 231.7 MB in the beginning and 432.5 MB in the end (delta: 200.8 MB). Free memory was 193.9 MB in the beginning and 123.1 MB in the end (delta: 70.7 MB). Peak memory consumption was 271.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 580]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L83] int waterLevel = 1; [L84] int methaneLevelCritical = 0; [L341] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L585] int cleanupTimeShifts = 4; [L686] int pumpRunning = 0; [L687] int systemActive = 1; [L661] int retValue_acc ; [L662] int tmp ; [L666] FCALL select_helpers() [L667] FCALL select_features() [L668] CALL, EXPR valid_product() [L567] int retValue_acc ; [L570] retValue_acc = 1 [L571] return (retValue_acc); [L668] RET, EXPR valid_product() [L668] tmp = valid_product() [L670] COND TRUE \read(tmp) [L672] FCALL setup() [L673] CALL runTest() [L655] CALL test() [L882] int splverifierCounter ; [L883] int tmp ; [L884] int tmp___0 ; [L885] int tmp___1 ; [L886] int tmp___2 ; [L889] splverifierCounter = 0 [L891] COND TRUE 1 [L893] COND TRUE splverifierCounter < 4 [L899] tmp = __VERIFIER_nondet_int() [L901] COND TRUE \read(tmp) [L903] CALL waterRise() [L101] COND TRUE waterLevel < 2 [L102] waterLevel = waterLevel + 1 [L903] RET waterRise() [L909] tmp___0 = __VERIFIER_nondet_int() [L911] COND FALSE !(\read(tmp___0)) [L919] tmp___2 = __VERIFIER_nondet_int() [L921] COND TRUE \read(tmp___2) [L934] CALL timeShift() [L693] COND FALSE !(\read(pumpRunning)) [L700] COND TRUE \read(systemActive) [L702] CALL processEnvironment() [L748] int tmp ; [L751] COND FALSE !(\read(pumpRunning)) [L766] CALL processEnvironment__wrappee__methaneQuery() [L722] int tmp ; [L725] COND FALSE !(\read(pumpRunning)) [L740] FCALL processEnvironment__wrappee__base() [L766] RET processEnvironment__wrappee__methaneQuery() [L702] RET processEnvironment() [L708] CALL __utac_acc__Specification3_spec__1() [L45] int tmp ; [L46] int tmp___0 ; [L47] int tmp___1 ; [L51] CALL, EXPR isMethaneLevelCritical() [L122] int retValue_acc ; [L125] retValue_acc = methaneLevelCritical [L126] return (retValue_acc); [L51] RET, EXPR isMethaneLevelCritical() [L51] tmp = isMethaneLevelCritical() [L53] COND FALSE !(\read(tmp)) [L57] CALL, EXPR getWaterLevel() [L154] int retValue_acc ; [L157] retValue_acc = waterLevel [L158] return (retValue_acc); [L57] RET, EXPR getWaterLevel() [L57] tmp___0 = getWaterLevel() [L59] COND TRUE tmp___0 == 2 [L61] CALL, EXPR isPumpRunning() [L817] int retValue_acc ; [L820] retValue_acc = pumpRunning [L821] return (retValue_acc); [L61] RET, EXPR isPumpRunning() [L61] tmp___1 = isPumpRunning() [L63] COND FALSE !(\read(tmp___1)) [L67] CALL __automaton_fail() [L580] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 234 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 11.7s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 8.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 503 SDtfs, 782 SDslu, 249 SDs, 0 SdLazy, 1530 SolverSat, 486 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 135 GetRequests, 101 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 3.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=208occurred 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, 142 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 380 NumberOfCodeBlocks, 380 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 301 ConstructedInterpolants, 0 QuantifiedInterpolants, 86476 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...