/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=0.3 --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_productSimulator.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 04:30:10,149 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 04:30:10,151 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 04:30:10,175 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 04:30:10,175 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 04:30:10,176 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 04:30:10,178 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 04:30:10,179 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 04:30:10,181 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 04:30:10,182 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 04:30:10,183 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 04:30:10,184 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 04:30:10,184 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 04:30:10,185 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 04:30:10,186 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 04:30:10,187 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 04:30:10,188 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 04:30:10,189 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 04:30:10,191 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 04:30:10,194 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 04:30:10,199 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 04:30:10,200 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 04:30:10,203 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 04:30:10,204 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 04:30:10,209 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 04:30:10,209 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 04:30:10,210 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 04:30:10,214 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 04:30:10,214 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 04:30:10,215 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 04:30:10,215 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 04:30:10,217 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 04:30:10,217 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 04:30:10,219 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 04:30:10,220 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 04:30:10,220 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 04:30:10,221 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 04:30:10,221 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 04:30:10,221 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 04:30:10,222 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 04:30:10,223 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 04:30:10,224 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 04:30:10,266 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 04:30:10,267 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 04:30:10,269 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 04:30:10,269 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 04:30:10,269 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 04:30:10,269 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 04:30:10,270 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 04:30:10,270 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 04:30:10,270 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 04:30:10,270 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 04:30:10,271 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 04:30:10,271 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 04:30:10,272 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 04:30:10,272 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 04:30:10,272 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 04:30:10,273 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 04:30:10,273 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 04:30:10,273 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 04:30:10,273 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 04:30:10,273 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 04:30:10,273 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 04:30:10,274 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 04:30:10,274 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 04:30:10,274 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 04:30:10,274 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 04:30:10,274 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 04:30:10,275 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 04:30:10,275 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 04:30:10,275 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 04:30:10,275 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=0.3;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=0.3;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=0.3;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=0.3;log-additional-information=true; [2020-08-22 04:30:10,583 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 04:30:10,595 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 04:30:10,598 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 04:30:10,600 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 04:30:10,600 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 04:30:10,601 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_productSimulator.cil.c [2020-08-22 04:30:10,661 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f28a4f18b/c72aec1b4ab348e59d2579a2ad10143b/FLAGa2bcdccc6 [2020-08-22 04:30:11,203 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 04:30:11,204 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_productSimulator.cil.c [2020-08-22 04:30:11,215 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f28a4f18b/c72aec1b4ab348e59d2579a2ad10143b/FLAGa2bcdccc6 [2020-08-22 04:30:11,484 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f28a4f18b/c72aec1b4ab348e59d2579a2ad10143b [2020-08-22 04:30:11,495 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 04:30:11,497 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 04:30:11,501 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 04:30:11,501 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 04:30:11,505 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 04:30:11,506 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:30:11" (1/1) ... [2020-08-22 04:30:11,510 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4428e4e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:30:11, skipping insertion in model container [2020-08-22 04:30:11,510 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:30:11" (1/1) ... [2020-08-22 04:30:11,520 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 04:30:11,588 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 04:30:12,117 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 04:30:12,143 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 04:30:12,224 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 04:30:12,267 INFO L208 MainTranslator]: Completed translation [2020-08-22 04:30:12,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:30:12 WrapperNode [2020-08-22 04:30:12,267 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 04:30:12,268 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 04:30:12,268 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 04:30:12,269 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 04:30:12,281 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:30:12" (1/1) ... [2020-08-22 04:30:12,281 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:30:12" (1/1) ... [2020-08-22 04:30:12,303 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:30:12" (1/1) ... [2020-08-22 04:30:12,303 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:30:12" (1/1) ... [2020-08-22 04:30:12,334 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:30:12" (1/1) ... [2020-08-22 04:30:12,346 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:30:12" (1/1) ... [2020-08-22 04:30:12,351 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:30:12" (1/1) ... [2020-08-22 04:30:12,366 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 04:30:12,366 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 04:30:12,367 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 04:30:12,367 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 04:30:12,368 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:30:12" (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 04:30:12,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 04:30:12,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 04:30:12,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 04:30:12,429 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 04:30:12,430 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 04:30:12,430 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 04:30:12,430 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 04:30:12,430 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 04:30:12,430 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 04:30:12,430 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 04:30:12,430 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 04:30:12,430 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 04:30:12,431 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 04:30:12,431 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 04:30:12,431 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 04:30:12,431 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 04:30:12,431 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__highWaterSensor [2020-08-22 04:30:12,432 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__role__highWaterSensor [2020-08-22 04:30:12,432 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__lowWaterSensor [2020-08-22 04:30:12,432 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__role__lowWaterSensor [2020-08-22 04:30:12,432 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__methaneAlarm [2020-08-22 04:30:12,432 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__role__methaneAlarm [2020-08-22 04:30:12,432 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 04:30:12,432 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__before__methaneQuery [2020-08-22 04:30:12,433 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__role__methaneQuery [2020-08-22 04:30:12,433 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 04:30:12,433 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 04:30:12,433 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 04:30:12,433 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 04:30:12,433 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 04:30:12,434 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 04:30:12,434 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-22 04:30:12,434 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-22 04:30:12,434 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-22 04:30:12,434 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 04:30:12,434 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 04:30:12,435 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 04:30:12,435 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 04:30:12,435 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-22 04:30:12,435 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 04:30:12,435 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 04:30:12,435 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 04:30:12,436 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 04:30:12,436 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 04:30:12,436 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 04:30:12,436 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 04:30:12,436 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 04:30:12,436 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-22 04:30:12,436 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 04:30:12,437 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 04:30:12,437 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 04:30:12,437 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 04:30:12,437 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 04:30:12,437 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 04:30:12,437 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 04:30:12,437 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 04:30:12,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 04:30:12,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 04:30:12,438 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 04:30:12,438 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 04:30:12,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 04:30:12,438 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 04:30:12,439 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 04:30:12,439 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 04:30:12,439 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 04:30:12,439 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 04:30:12,439 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 04:30:12,439 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 04:30:12,439 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 04:30:12,439 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 04:30:12,440 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 04:30:12,440 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 04:30:12,440 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 04:30:12,440 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 04:30:12,440 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 04:30:12,440 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 04:30:12,441 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 04:30:12,441 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 04:30:12,441 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 04:30:12,441 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 04:30:12,441 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 04:30:12,441 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-22 04:30:12,441 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-22 04:30:12,442 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 04:30:12,442 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 04:30:12,442 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 04:30:12,442 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 04:30:12,442 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-22 04:30:12,442 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 04:30:12,442 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 04:30:12,443 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 04:30:12,443 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-22 04:30:12,443 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 04:30:12,443 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__highWaterSensor [2020-08-22 04:30:12,443 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 04:30:12,443 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__role__highWaterSensor [2020-08-22 04:30:12,444 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__lowWaterSensor [2020-08-22 04:30:12,444 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-22 04:30:12,444 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__role__lowWaterSensor [2020-08-22 04:30:12,444 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__methaneAlarm [2020-08-22 04:30:12,444 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 04:30:12,444 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__role__methaneAlarm [2020-08-22 04:30:12,444 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__before__methaneQuery [2020-08-22 04:30:12,445 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__role__methaneQuery [2020-08-22 04:30:12,445 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 04:30:12,445 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 04:30:12,445 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 04:30:12,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 04:30:12,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 04:30:12,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 04:30:13,622 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 04:30:13,622 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 04:30:13,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:30:13 BoogieIcfgContainer [2020-08-22 04:30:13,632 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 04:30:13,634 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 04:30:13,634 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 04:30:13,637 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 04:30:13,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 04:30:11" (1/3) ... [2020-08-22 04:30:13,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a1eada1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:30:13, skipping insertion in model container [2020-08-22 04:30:13,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:30:12" (2/3) ... [2020-08-22 04:30:13,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a1eada1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:30:13, skipping insertion in model container [2020-08-22 04:30:13,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:30:13" (3/3) ... [2020-08-22 04:30:13,640 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_productSimulator.cil.c [2020-08-22 04:30:13,649 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 04:30:13,656 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 04:30:13,670 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 04:30:13,694 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 04:30:13,695 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 04:30:13,695 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 04:30:13,695 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 04:30:13,696 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 04:30:13,696 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 04:30:13,696 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 04:30:13,697 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 04:30:13,720 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states. [2020-08-22 04:30:13,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-22 04:30:13,734 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:30:13,735 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:30:13,736 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:30:13,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:30:13,741 INFO L82 PathProgramCache]: Analyzing trace with hash -1384301403, now seen corresponding path program 1 times [2020-08-22 04:30:13,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:30:13,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [174179064] [2020-08-22 04:30:13,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:30:14,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:14,584 WARN L193 SmtUtils]: Spent 394.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-22 04:30:14,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:30:14,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:14,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:30:14,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:14,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 04:30:14,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:14,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:30:14,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:14,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:30:14,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:14,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 04:30:14,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:14,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:30:14,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:14,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 04:30:14,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:14,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 04:30:14,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:14,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 04:30:14,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:14,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 04:30:14,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:14,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 04:30:14,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:14,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 04:30:14,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:14,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-22 04:30:14,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:14,737 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-22 04:30:14,738 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [174179064] [2020-08-22 04:30:14,740 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:30:14,741 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 04:30:14,741 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369954331] [2020-08-22 04:30:14,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 04:30:14,747 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:30:14,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 04:30:14,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 04:30:14,764 INFO L87 Difference]: Start difference. First operand 248 states. Second operand 5 states. [2020-08-22 04:30:17,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:30:17,111 INFO L93 Difference]: Finished difference Result 448 states and 591 transitions. [2020-08-22 04:30:17,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 04:30:17,114 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 84 [2020-08-22 04:30:17,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:30:17,130 INFO L225 Difference]: With dead ends: 448 [2020-08-22 04:30:17,130 INFO L226 Difference]: Without dead ends: 254 [2020-08-22 04:30:17,136 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-08-22 04:30:17,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-08-22 04:30:17,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 205. [2020-08-22 04:30:17,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-08-22 04:30:17,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 252 transitions. [2020-08-22 04:30:17,254 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 252 transitions. Word has length 84 [2020-08-22 04:30:17,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:30:17,254 INFO L479 AbstractCegarLoop]: Abstraction has 205 states and 252 transitions. [2020-08-22 04:30:17,255 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 04:30:17,255 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 252 transitions. [2020-08-22 04:30:17,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-08-22 04:30:17,260 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:30:17,260 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:30:17,261 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 04:30:17,261 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:30:17,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:30:17,261 INFO L82 PathProgramCache]: Analyzing trace with hash 435784209, now seen corresponding path program 1 times [2020-08-22 04:30:17,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:30:17,262 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1990087146] [2020-08-22 04:30:17,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:30:17,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:17,666 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-22 04:30:17,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:30:17,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:17,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:30:17,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:17,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 04:30:17,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:17,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:30:17,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:17,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:30:17,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:17,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 04:30:17,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:17,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:30:17,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:17,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 04:30:17,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:17,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 04:30:17,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:17,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 04:30:17,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:17,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 04:30:17,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:17,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-22 04:30:17,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:17,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-22 04:30:17,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:17,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-22 04:30:17,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:17,828 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-22 04:30:17,829 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1990087146] [2020-08-22 04:30:17,829 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:30:17,829 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 04:30:17,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281423778] [2020-08-22 04:30:17,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 04:30:17,833 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:30:17,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 04:30:17,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 04:30:17,834 INFO L87 Difference]: Start difference. First operand 205 states and 252 transitions. Second operand 6 states. [2020-08-22 04:30:18,544 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-22 04:30:20,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:30:20,331 INFO L93 Difference]: Finished difference Result 372 states and 469 transitions. [2020-08-22 04:30:20,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 04:30:20,332 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 85 [2020-08-22 04:30:20,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:30:20,337 INFO L225 Difference]: With dead ends: 372 [2020-08-22 04:30:20,337 INFO L226 Difference]: Without dead ends: 238 [2020-08-22 04:30:20,339 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-08-22 04:30:20,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-08-22 04:30:20,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 196. [2020-08-22 04:30:20,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-08-22 04:30:20,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 240 transitions. [2020-08-22 04:30:20,394 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 240 transitions. Word has length 85 [2020-08-22 04:30:20,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:30:20,395 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 240 transitions. [2020-08-22 04:30:20,395 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 04:30:20,395 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 240 transitions. [2020-08-22 04:30:20,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-22 04:30:20,399 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:30:20,399 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:30:20,399 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 04:30:20,400 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:30:20,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:30:20,400 INFO L82 PathProgramCache]: Analyzing trace with hash 681264365, now seen corresponding path program 1 times [2020-08-22 04:30:20,400 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:30:20,401 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2093176577] [2020-08-22 04:30:20,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:30:20,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:20,827 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-22 04:30:20,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:30:20,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:20,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:30:20,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:20,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 04:30:20,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:20,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:30:20,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:20,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:30:20,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:20,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 04:30:20,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:20,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:30:20,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:20,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 04:30:20,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:20,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 04:30:20,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:20,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 04:30:20,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:20,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 04:30:20,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:20,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 04:30:20,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:20,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-22 04:30:20,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:20,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-22 04:30:20,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:20,986 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-22 04:30:20,987 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2093176577] [2020-08-22 04:30:20,987 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:30:20,987 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 04:30:20,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044805227] [2020-08-22 04:30:20,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 04:30:20,988 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:30:20,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 04:30:20,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-22 04:30:20,989 INFO L87 Difference]: Start difference. First operand 196 states and 240 transitions. Second operand 12 states. [2020-08-22 04:30:21,526 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-22 04:30:22,170 WARN L193 SmtUtils]: Spent 513.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 211 [2020-08-22 04:30:22,937 WARN L193 SmtUtils]: Spent 512.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 213 [2020-08-22 04:30:23,957 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-22 04:30:24,335 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-08-22 04:30:28,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:30:28,278 INFO L93 Difference]: Finished difference Result 643 states and 818 transitions. [2020-08-22 04:30:28,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-22 04:30:28,279 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 90 [2020-08-22 04:30:28,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:30:28,285 INFO L225 Difference]: With dead ends: 643 [2020-08-22 04:30:28,285 INFO L226 Difference]: Without dead ends: 488 [2020-08-22 04:30:28,287 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=147, Invalid=453, Unknown=0, NotChecked=0, Total=600 [2020-08-22 04:30:28,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2020-08-22 04:30:28,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 397. [2020-08-22 04:30:28,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2020-08-22 04:30:28,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 497 transitions. [2020-08-22 04:30:28,412 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 497 transitions. Word has length 90 [2020-08-22 04:30:28,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:30:28,413 INFO L479 AbstractCegarLoop]: Abstraction has 397 states and 497 transitions. [2020-08-22 04:30:28,413 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 04:30:28,413 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 497 transitions. [2020-08-22 04:30:28,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-08-22 04:30:28,416 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:30:28,416 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:30:28,417 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 04:30:28,417 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:30:28,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:30:28,417 INFO L82 PathProgramCache]: Analyzing trace with hash -326319286, now seen corresponding path program 1 times [2020-08-22 04:30:28,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:30:28,417 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1986018418] [2020-08-22 04:30:28,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:30:28,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:28,779 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-22 04:30:28,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:30:28,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:28,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:30:28,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:28,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 04:30:28,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:28,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:30:28,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:28,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:30:28,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:28,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 04:30:28,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:28,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:30:28,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:28,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 04:30:28,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:28,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 04:30:28,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:28,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 04:30:28,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:28,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 04:30:28,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:28,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-22 04:30:28,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:28,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-22 04:30:28,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:28,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-22 04:30:28,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:28,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-22 04:30:28,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:28,969 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-22 04:30:28,970 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1986018418] [2020-08-22 04:30:28,970 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:30:28,970 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 04:30:28,971 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925071526] [2020-08-22 04:30:28,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 04:30:28,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:30:28,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 04:30:28,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-22 04:30:28,972 INFO L87 Difference]: Start difference. First operand 397 states and 497 transitions. Second operand 10 states. [2020-08-22 04:30:29,467 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-22 04:30:31,653 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-08-22 04:30:32,155 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-08-22 04:30:32,621 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-08-22 04:30:32,940 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-22 04:30:34,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:30:34,768 INFO L93 Difference]: Finished difference Result 1234 states and 1653 transitions. [2020-08-22 04:30:34,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 04:30:34,772 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 96 [2020-08-22 04:30:34,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:30:34,779 INFO L225 Difference]: With dead ends: 1234 [2020-08-22 04:30:34,779 INFO L226 Difference]: Without dead ends: 878 [2020-08-22 04:30:34,781 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=138, Invalid=324, Unknown=0, NotChecked=0, Total=462 [2020-08-22 04:30:34,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2020-08-22 04:30:34,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 778. [2020-08-22 04:30:34,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 778 states. [2020-08-22 04:30:34,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 778 states to 778 states and 987 transitions. [2020-08-22 04:30:34,967 INFO L78 Accepts]: Start accepts. Automaton has 778 states and 987 transitions. Word has length 96 [2020-08-22 04:30:34,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:30:34,968 INFO L479 AbstractCegarLoop]: Abstraction has 778 states and 987 transitions. [2020-08-22 04:30:34,968 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 04:30:34,968 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states and 987 transitions. [2020-08-22 04:30:34,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-08-22 04:30:34,972 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:30:34,972 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:30:34,972 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 04:30:34,973 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:30:34,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:30:34,973 INFO L82 PathProgramCache]: Analyzing trace with hash 635729360, now seen corresponding path program 1 times [2020-08-22 04:30:34,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:30:34,973 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [437029377] [2020-08-22 04:30:34,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:30:35,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:35,317 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-22 04:30:35,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:30:35,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:35,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:30:35,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:35,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 04:30:35,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:35,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:30:35,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:35,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:30:35,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:35,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 04:30:35,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:35,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:30:35,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:35,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 04:30:35,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:35,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-22 04:30:35,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:35,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 04:30:35,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:35,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 04:30:35,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:35,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-22 04:30:35,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:35,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-22 04:30:35,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:35,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-22 04:30:35,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:35,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 04:30:35,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:35,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-22 04:30:35,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:30:35,470 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-22 04:30:35,470 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [437029377] [2020-08-22 04:30:35,470 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:30:35,471 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 04:30:35,471 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958902852] [2020-08-22 04:30:35,471 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 04:30:35,471 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:30:35,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 04:30:35,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-22 04:30:35,474 INFO L87 Difference]: Start difference. First operand 778 states and 987 transitions. Second operand 8 states. [2020-08-22 04:30:36,113 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-22 04:30:39,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:30:39,969 INFO L93 Difference]: Finished difference Result 1840 states and 2490 transitions. [2020-08-22 04:30:39,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 04:30:39,970 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 100 [2020-08-22 04:30:39,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:30:39,977 INFO L225 Difference]: With dead ends: 1840 [2020-08-22 04:30:39,978 INFO L226 Difference]: Without dead ends: 1103 [2020-08-22 04:30:39,981 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=125, Invalid=255, Unknown=0, NotChecked=0, Total=380 [2020-08-22 04:30:39,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1103 states. [2020-08-22 04:30:40,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1103 to 1024. [2020-08-22 04:30:40,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1024 states. [2020-08-22 04:30:40,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 1298 transitions. [2020-08-22 04:30:40,235 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 1298 transitions. Word has length 100 [2020-08-22 04:30:40,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:30:40,235 INFO L479 AbstractCegarLoop]: Abstraction has 1024 states and 1298 transitions. [2020-08-22 04:30:40,235 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 04:30:40,236 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 1298 transitions. [2020-08-22 04:30:40,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-08-22 04:30:40,239 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:30:40,239 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:30:40,240 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 04:30:40,240 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:30:40,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:30:40,240 INFO L82 PathProgramCache]: Analyzing trace with hash -950611836, now seen corresponding path program 1 times [2020-08-22 04:30:40,240 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:30:40,241 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2116886109] [2020-08-22 04:30:40,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:30:40,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 04:30:40,355 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 04:30:40,355 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 04:30:40,360 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 04:30:40,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 04:30:40 BoogieIcfgContainer [2020-08-22 04:30:40,401 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 04:30:40,405 INFO L168 Benchmark]: Toolchain (without parser) took 28907.11 ms. Allocated memory was 140.5 MB in the beginning and 658.5 MB in the end (delta: 518.0 MB). Free memory was 102.6 MB in the beginning and 373.6 MB in the end (delta: -271.0 MB). Peak memory consumption was 247.0 MB. Max. memory is 7.1 GB. [2020-08-22 04:30:40,406 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 04:30:40,413 INFO L168 Benchmark]: CACSL2BoogieTranslator took 766.74 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 102.3 MB in the beginning and 168.4 MB in the end (delta: -66.1 MB). Peak memory consumption was 27.5 MB. Max. memory is 7.1 GB. [2020-08-22 04:30:40,414 INFO L168 Benchmark]: Boogie Preprocessor took 97.77 ms. Allocated memory is still 203.4 MB. Free memory was 168.4 MB in the beginning and 164.4 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-08-22 04:30:40,415 INFO L168 Benchmark]: RCFGBuilder took 1266.08 ms. Allocated memory was 203.4 MB in the beginning and 236.5 MB in the end (delta: 33.0 MB). Free memory was 164.4 MB in the beginning and 181.2 MB in the end (delta: -16.8 MB). Peak memory consumption was 79.1 MB. Max. memory is 7.1 GB. [2020-08-22 04:30:40,416 INFO L168 Benchmark]: TraceAbstraction took 26767.99 ms. Allocated memory was 236.5 MB in the beginning and 658.5 MB in the end (delta: 422.1 MB). Free memory was 181.2 MB in the beginning and 373.6 MB in the end (delta: -192.4 MB). Peak memory consumption was 229.7 MB. Max. memory is 7.1 GB. [2020-08-22 04:30:40,428 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 766.74 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 102.3 MB in the beginning and 168.4 MB in the end (delta: -66.1 MB). Peak memory consumption was 27.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 97.77 ms. Allocated memory is still 203.4 MB. Free memory was 168.4 MB in the beginning and 164.4 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1266.08 ms. Allocated memory was 203.4 MB in the beginning and 236.5 MB in the end (delta: 33.0 MB). Free memory was 164.4 MB in the beginning and 181.2 MB in the end (delta: -16.8 MB). Peak memory consumption was 79.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 26767.99 ms. Allocated memory was 236.5 MB in the beginning and 658.5 MB in the end (delta: 422.1 MB). Free memory was 181.2 MB in the beginning and 373.6 MB in the end (delta: -192.4 MB). Peak memory consumption was 229.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1022]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L209] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L406] int cleanupTimeShifts = 4; [L510] int __SELECTED_FEATURE_base ; [L511] int __SELECTED_FEATURE_highWaterSensor ; [L512] int __SELECTED_FEATURE_lowWaterSensor ; [L513] int __SELECTED_FEATURE_methaneQuery ; [L514] int __SELECTED_FEATURE_methaneAlarm ; [L515] int __SELECTED_FEATURE_stopCommand ; [L516] int __SELECTED_FEATURE_startCommand ; [L517] int __GUIDSL_ROOT_PRODUCTION ; [L605] int pumpRunning = 0; [L606] int systemActive = 1; [L1027] int waterLevel = 1; [L1028] int methaneLevelCritical = 0; [L487] int retValue_acc ; [L488] int tmp ; [L492] CALL select_helpers() [L968] __GUIDSL_ROOT_PRODUCTION = 1 [L492] RET select_helpers() [L493] CALL select_features() [L953] __SELECTED_FEATURE_base = 1 [L954] CALL, EXPR select_one() [L939] int retValue_acc ; [L940] int choice = __VERIFIER_nondet_int(); [L943] retValue_acc = choice [L944] return (retValue_acc); [L954] RET, EXPR select_one() [L954] __SELECTED_FEATURE_highWaterSensor = select_one() [L955] CALL, EXPR select_one() [L939] int retValue_acc ; [L940] int choice = __VERIFIER_nondet_int(); [L943] retValue_acc = choice [L944] return (retValue_acc); [L955] RET, EXPR select_one() [L955] __SELECTED_FEATURE_lowWaterSensor = select_one() [L956] CALL, EXPR select_one() [L939] int retValue_acc ; [L940] int choice = __VERIFIER_nondet_int(); [L943] retValue_acc = choice [L944] return (retValue_acc); [L956] RET, EXPR select_one() [L956] __SELECTED_FEATURE_methaneQuery = select_one() [L957] CALL, EXPR select_one() [L939] int retValue_acc ; [L940] int choice = __VERIFIER_nondet_int(); [L943] retValue_acc = choice [L944] return (retValue_acc); [L957] RET, EXPR select_one() [L957] __SELECTED_FEATURE_methaneAlarm = select_one() [L958] CALL, EXPR select_one() [L939] int retValue_acc ; [L940] int choice = __VERIFIER_nondet_int(); [L943] retValue_acc = choice [L944] return (retValue_acc); [L958] RET, EXPR select_one() [L958] __SELECTED_FEATURE_stopCommand = select_one() [L959] CALL, EXPR select_one() [L939] int retValue_acc ; [L940] int choice = __VERIFIER_nondet_int(); [L943] retValue_acc = choice [L944] return (retValue_acc); [L959] RET, EXPR select_one() [L959] __SELECTED_FEATURE_startCommand = select_one() [L493] RET select_features() [L494] CALL, EXPR valid_product() [L973] int retValue_acc ; [L976] retValue_acc = __SELECTED_FEATURE_base [L977] return (retValue_acc); [L494] RET, EXPR valid_product() [L494] tmp = valid_product() [L496] COND TRUE \read(tmp) [L498] FCALL setup() [L499] CALL runTest() [L478] CALL test() [L521] int splverifierCounter ; [L522] int tmp ; [L523] int tmp___0 ; [L524] int tmp___1 ; [L525] int tmp___2 ; [L528] splverifierCounter = 0 [L530] COND TRUE 1 [L532] COND TRUE splverifierCounter < 4 [L538] tmp = __VERIFIER_nondet_int() [L540] COND TRUE \read(tmp) [L542] CALL waterRise() [L1045] COND TRUE waterLevel < 2 [L1046] waterLevel = waterLevel + 1 [L542] RET waterRise() [L548] tmp___0 = __VERIFIER_nondet_int() [L550] COND FALSE !(\read(tmp___0)) [L558] tmp___2 = __VERIFIER_nondet_int() [L560] COND FALSE !(\read(tmp___2)) [L570] tmp___1 = __VERIFIER_nondet_int() [L572] COND TRUE \read(tmp___1) [L573] COND TRUE \read(__SELECTED_FEATURE_stopCommand) [L575] CALL stopSystem() [L917] COND FALSE !(\read(pumpRunning)) [L924] systemActive = 0 [L575] RET stopSystem() [L585] CALL timeShift() [L613] COND FALSE !(\read(pumpRunning)) [L620] COND FALSE !(\read(systemActive)) [L628] CALL __utac_acc__Specification3_spec__1() [L985] int tmp ; [L986] int tmp___0 ; [L987] int tmp___1 ; [L991] CALL, EXPR isMethaneLevelCritical() [L1066] int retValue_acc ; [L1069] retValue_acc = methaneLevelCritical [L1070] return (retValue_acc); [L991] RET, EXPR isMethaneLevelCritical() [L991] tmp = isMethaneLevelCritical() [L993] COND FALSE !(\read(tmp)) [L997] CALL, EXPR getWaterLevel() [L1098] int retValue_acc ; [L1101] retValue_acc = waterLevel [L1102] return (retValue_acc); [L997] RET, EXPR getWaterLevel() [L997] tmp___0 = getWaterLevel() [L999] COND TRUE tmp___0 == 2 [L1001] CALL, EXPR isPumpRunning() [L831] int retValue_acc ; [L834] retValue_acc = pumpRunning [L835] return (retValue_acc); [L1001] RET, EXPR isPumpRunning() [L1001] tmp___1 = isPumpRunning() [L1003] COND FALSE !(\read(tmp___1)) [L1007] CALL __automaton_fail() [L1022] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 48 procedures, 301 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 26.6s, OverallIterations: 6, TraceHistogramMax: 6, AutomataDifference: 22.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 845 SDtfs, 3115 SDslu, 268 SDs, 0 SdLazy, 4706 SolverSat, 2597 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 14.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 227 GetRequests, 154 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 6.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1024occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 5 MinimizatonAttempts, 361 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 555 NumberOfCodeBlocks, 555 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 450 ConstructedInterpolants, 0 QuantifiedInterpolants, 167384 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 225/225 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...