/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=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 -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 0.1.25-5644d1e-m [2020-08-19 00:58:45,256 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 00:58:45,259 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 00:58:45,283 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 00:58:45,284 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 00:58:45,285 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 00:58:45,286 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 00:58:45,288 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 00:58:45,290 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 00:58:45,291 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 00:58:45,291 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 00:58:45,293 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 00:58:45,293 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 00:58:45,294 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 00:58:45,295 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 00:58:45,296 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 00:58:45,297 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 00:58:45,298 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 00:58:45,300 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 00:58:45,304 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 00:58:45,308 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 00:58:45,310 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 00:58:45,311 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 00:58:45,313 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 00:58:45,321 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 00:58:45,321 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 00:58:45,321 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 00:58:45,324 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 00:58:45,327 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 00:58:45,328 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 00:58:45,328 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 00:58:45,329 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 00:58:45,330 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 00:58:45,331 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 00:58:45,332 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 00:58:45,332 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 00:58:45,334 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 00:58:45,334 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 00:58:45,334 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 00:58:45,335 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 00:58:45,336 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 00:58:45,338 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 [2020-08-19 00:58:45,379 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 00:58:45,380 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 00:58:45,381 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 00:58:45,382 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 00:58:45,382 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 00:58:45,382 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 00:58:45,382 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 00:58:45,382 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 00:58:45,383 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 00:58:45,383 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 00:58:45,384 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 00:58:45,384 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 00:58:45,384 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 00:58:45,385 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 00:58:45,385 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 00:58:45,385 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 00:58:45,385 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 00:58:45,386 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 00:58:45,386 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 00:58:45,386 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 00:58:45,386 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 00:58:45,387 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 00:58:45,387 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 00:58:45,387 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 00:58:45,387 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 00:58:45,387 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 00:58:45,388 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 00:58:45,388 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 00:58:45,388 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 00:58:45,388 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=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; [2020-08-19 00:58:45,723 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 00:58:45,736 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 00:58:45,739 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 00:58:45,741 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 00:58:45,742 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 00:58:45,742 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product29.cil.c [2020-08-19 00:58:45,816 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8bd498ce6/9d8c988b9bf0438c9a013af03611be86/FLAGd37c855e3 [2020-08-19 00:58:46,359 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 00:58:46,360 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product29.cil.c [2020-08-19 00:58:46,373 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8bd498ce6/9d8c988b9bf0438c9a013af03611be86/FLAGd37c855e3 [2020-08-19 00:58:46,654 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8bd498ce6/9d8c988b9bf0438c9a013af03611be86 [2020-08-19 00:58:46,664 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 00:58:46,666 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 00:58:46,667 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 00:58:46,667 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 00:58:46,671 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 00:58:46,672 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:58:46" (1/1) ... [2020-08-19 00:58:46,676 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bcf94a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:58:46, skipping insertion in model container [2020-08-19 00:58:46,676 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:58:46" (1/1) ... [2020-08-19 00:58:46,684 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 00:58:46,753 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 00:58:47,215 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:58:47,227 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 00:58:47,323 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:58:47,358 INFO L208 MainTranslator]: Completed translation [2020-08-19 00:58:47,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:58:47 WrapperNode [2020-08-19 00:58:47,359 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 00:58:47,360 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 00:58:47,363 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 00:58:47,364 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 00:58:47,375 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:58:47" (1/1) ... [2020-08-19 00:58:47,375 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:58:47" (1/1) ... [2020-08-19 00:58:47,394 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:58:47" (1/1) ... [2020-08-19 00:58:47,395 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:58:47" (1/1) ... [2020-08-19 00:58:47,427 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:58:47" (1/1) ... [2020-08-19 00:58:47,437 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:58:47" (1/1) ... [2020-08-19 00:58:47,443 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:58:47" (1/1) ... [2020-08-19 00:58:47,451 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 00:58:47,452 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 00:58:47,452 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 00:58:47,452 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 00:58:47,453 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:58:47" (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 [2020-08-19 00:58:47,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 00:58:47,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 00:58:47,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 00:58:47,528 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-19 00:58:47,529 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 00:58:47,529 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 00:58:47,529 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 00:58:47,529 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 00:58:47,529 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 00:58:47,530 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 00:58:47,530 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-19 00:58:47,530 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 00:58:47,530 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 00:58:47,530 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 00:58:47,530 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 00:58:47,531 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 00:58:47,531 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 00:58:47,531 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 00:58:47,531 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 00:58:47,531 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 00:58:47,531 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 00:58:47,531 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 00:58:47,532 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 00:58:47,532 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 00:58:47,532 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 00:58:47,532 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 00:58:47,532 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 00:58:47,532 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 00:58:47,533 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 00:58:47,533 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-19 00:58:47,533 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 00:58:47,533 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-19 00:58:47,533 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 00:58:47,533 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 00:58:47,534 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 00:58:47,534 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 00:58:47,534 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 00:58:47,534 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-19 00:58:47,534 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 00:58:47,534 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 00:58:47,535 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 00:58:47,535 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 00:58:47,535 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 00:58:47,535 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 00:58:47,535 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 00:58:47,535 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 00:58:47,536 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-19 00:58:47,536 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 00:58:47,536 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 00:58:47,536 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 00:58:47,536 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 00:58:47,536 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-19 00:58:47,536 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 00:58:47,537 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 00:58:47,537 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 00:58:47,537 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 00:58:47,537 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 00:58:47,537 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 00:58:47,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 00:58:47,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 00:58:47,538 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 00:58:47,538 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 00:58:47,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 00:58:47,538 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 00:58:47,538 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 00:58:47,539 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 00:58:47,539 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 00:58:47,539 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 00:58:47,539 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 00:58:47,539 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 00:58:47,539 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 00:58:47,539 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 00:58:47,540 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 00:58:47,540 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 00:58:47,540 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 00:58:47,540 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 00:58:47,540 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 00:58:47,540 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 00:58:47,540 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 00:58:47,541 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 00:58:47,541 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 00:58:47,541 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 00:58:47,541 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 00:58:47,541 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 00:58:47,541 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 00:58:47,542 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-19 00:58:47,542 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-19 00:58:47,542 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 00:58:47,542 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-19 00:58:47,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 00:58:47,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 00:58:47,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 00:58:48,653 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 00:58:48,654 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 00:58:48,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:58:48 BoogieIcfgContainer [2020-08-19 00:58:48,659 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 00:58:48,661 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 00:58:48,661 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 00:58:48,664 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 00:58:48,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 12:58:46" (1/3) ... [2020-08-19 00:58:48,666 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@264ccf70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:58:48, skipping insertion in model container [2020-08-19 00:58:48,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:58:47" (2/3) ... [2020-08-19 00:58:48,666 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@264ccf70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:58:48, skipping insertion in model container [2020-08-19 00:58:48,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:58:48" (3/3) ... [2020-08-19 00:58:48,668 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product29.cil.c [2020-08-19 00:58:48,680 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 00:58:48,688 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 00:58:48,703 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 00:58:48,730 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 00:58:48,730 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 00:58:48,730 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 00:58:48,730 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 00:58:48,731 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 00:58:48,731 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 00:58:48,731 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 00:58:48,731 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 00:58:48,755 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states. [2020-08-19 00:58:48,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-19 00:58:48,767 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:58:48,768 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] [2020-08-19 00:58:48,769 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:58:48,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:58:48,776 INFO L82 PathProgramCache]: Analyzing trace with hash -720125183, now seen corresponding path program 1 times [2020-08-19 00:58:48,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:58:48,786 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [665147174] [2020-08-19 00:58:48,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:58:49,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:49,415 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:58:49,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:58:49,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:49,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:58:49,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:49,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:58:49,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:49,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:58:49,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:49,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:58:49,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:49,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 00:58:49,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:49,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 00:58:49,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:49,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 00:58:49,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:49,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:58:49,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [665147174] [2020-08-19 00:58:49,556 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:58:49,556 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 00:58:49,557 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508786612] [2020-08-19 00:58:49,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 00:58:49,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:58:49,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 00:58:49,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 00:58:49,584 INFO L87 Difference]: Start difference. First operand 176 states. Second operand 3 states. [2020-08-19 00:58:50,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:58:50,740 INFO L93 Difference]: Finished difference Result 291 states and 384 transitions. [2020-08-19 00:58:50,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 00:58:50,742 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-19 00:58:50,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:58:50,757 INFO L225 Difference]: With dead ends: 291 [2020-08-19 00:58:50,757 INFO L226 Difference]: Without dead ends: 157 [2020-08-19 00:58:50,762 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 00:58:50,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-08-19 00:58:50,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 125. [2020-08-19 00:58:50,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-08-19 00:58:50,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 148 transitions. [2020-08-19 00:58:50,875 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 148 transitions. Word has length 52 [2020-08-19 00:58:50,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:58:50,876 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 148 transitions. [2020-08-19 00:58:50,876 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 00:58:50,876 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 148 transitions. [2020-08-19 00:58:50,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-19 00:58:50,887 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:58:50,887 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] [2020-08-19 00:58:50,888 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 00:58:50,888 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:58:50,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:58:50,889 INFO L82 PathProgramCache]: Analyzing trace with hash -1479231386, now seen corresponding path program 1 times [2020-08-19 00:58:50,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:58:50,889 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [668577970] [2020-08-19 00:58:50,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:58:50,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:51,249 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:58:51,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:58:51,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:51,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:58:51,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:51,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:58:51,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:51,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:58:51,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:51,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:58:51,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:51,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 00:58:51,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:51,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 00:58:51,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:51,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 00:58:51,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:51,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:58:51,350 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [668577970] [2020-08-19 00:58:51,350 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:58:51,350 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 00:58:51,350 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903325094] [2020-08-19 00:58:51,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 00:58:51,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:58:51,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 00:58:51,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 00:58:51,353 INFO L87 Difference]: Start difference. First operand 125 states and 148 transitions. Second operand 4 states. [2020-08-19 00:58:51,757 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:58:52,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:58:52,561 INFO L93 Difference]: Finished difference Result 224 states and 275 transitions. [2020-08-19 00:58:52,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 00:58:52,562 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-19 00:58:52,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:58:52,564 INFO L225 Difference]: With dead ends: 224 [2020-08-19 00:58:52,565 INFO L226 Difference]: Without dead ends: 141 [2020-08-19 00:58:52,566 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 [2020-08-19 00:58:52,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-08-19 00:58:52,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 116. [2020-08-19 00:58:52,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-08-19 00:58:52,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 136 transitions. [2020-08-19 00:58:52,607 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 136 transitions. Word has length 53 [2020-08-19 00:58:52,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:58:52,607 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 136 transitions. [2020-08-19 00:58:52,607 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 00:58:52,607 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 136 transitions. [2020-08-19 00:58:52,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-19 00:58:52,609 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:58:52,609 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] [2020-08-19 00:58:52,610 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 00:58:52,610 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:58:52,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:58:52,610 INFO L82 PathProgramCache]: Analyzing trace with hash -162444823, now seen corresponding path program 1 times [2020-08-19 00:58:52,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:58:52,611 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2102414214] [2020-08-19 00:58:52,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:58:52,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:52,913 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:58:52,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:58:52,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:52,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:58:52,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:52,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:58:52,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:52,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:58:52,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:52,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:58:52,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:52,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 00:58:52,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:52,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 00:58:52,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:52,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-19 00:58:52,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:53,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:58:53,009 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2102414214] [2020-08-19 00:58:53,009 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:58:53,010 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 00:58:53,010 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538101566] [2020-08-19 00:58:53,010 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 00:58:53,011 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:58:53,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 00:58:53,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 00:58:53,011 INFO L87 Difference]: Start difference. First operand 116 states and 136 transitions. Second operand 8 states. [2020-08-19 00:58:53,377 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:58:53,677 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:58:53,913 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:58:54,156 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:58:55,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:58:55,274 INFO L93 Difference]: Finished difference Result 233 states and 289 transitions. [2020-08-19 00:58:55,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 00:58:55,277 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-19 00:58:55,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:58:55,281 INFO L225 Difference]: With dead ends: 233 [2020-08-19 00:58:55,282 INFO L226 Difference]: Without dead ends: 141 [2020-08-19 00:58:55,283 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 [2020-08-19 00:58:55,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-08-19 00:58:55,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 116. [2020-08-19 00:58:55,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-08-19 00:58:55,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 135 transitions. [2020-08-19 00:58:55,316 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 135 transitions. Word has length 57 [2020-08-19 00:58:55,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:58:55,316 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 135 transitions. [2020-08-19 00:58:55,316 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 00:58:55,317 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 135 transitions. [2020-08-19 00:58:55,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-19 00:58:55,318 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:58:55,318 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] [2020-08-19 00:58:55,319 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 00:58:55,319 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:58:55,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:58:55,319 INFO L82 PathProgramCache]: Analyzing trace with hash -524642989, now seen corresponding path program 1 times [2020-08-19 00:58:55,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:58:55,320 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1767186097] [2020-08-19 00:58:55,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:58:55,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:55,616 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:58:55,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:58:55,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:55,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:58:55,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:55,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:58:55,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:55,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:58:55,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:55,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:58:55,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:55,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 00:58:55,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:55,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:58:55,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:55,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:58:55,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:55,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 00:58:55,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:55,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-19 00:58:55,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:55,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-19 00:58:55,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:55,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:58:55,709 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1767186097] [2020-08-19 00:58:55,709 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:58:55,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 00:58:55,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585387750] [2020-08-19 00:58:55,710 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 00:58:55,710 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:58:55,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 00:58:55,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 00:58:55,711 INFO L87 Difference]: Start difference. First operand 116 states and 135 transitions. Second operand 8 states. [2020-08-19 00:58:56,091 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:58:57,551 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:58:57,822 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:58:58,095 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:58:58,460 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:58:58,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:58:58,846 INFO L93 Difference]: Finished difference Result 348 states and 456 transitions. [2020-08-19 00:58:58,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-19 00:58:58,847 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 70 [2020-08-19 00:58:58,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:58:58,852 INFO L225 Difference]: With dead ends: 348 [2020-08-19 00:58:58,852 INFO L226 Difference]: Without dead ends: 256 [2020-08-19 00:58:58,854 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 [2020-08-19 00:58:58,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2020-08-19 00:58:58,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 208. [2020-08-19 00:58:58,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2020-08-19 00:58:58,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 250 transitions. [2020-08-19 00:58:58,913 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 250 transitions. Word has length 70 [2020-08-19 00:58:58,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:58:58,914 INFO L479 AbstractCegarLoop]: Abstraction has 208 states and 250 transitions. [2020-08-19 00:58:58,914 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 00:58:58,914 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 250 transitions. [2020-08-19 00:58:58,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-08-19 00:58:58,916 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:58:58,916 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] [2020-08-19 00:58:58,916 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 00:58:58,917 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:58:58,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:58:58,917 INFO L82 PathProgramCache]: Analyzing trace with hash 691700877, now seen corresponding path program 1 times [2020-08-19 00:58:58,917 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:58:58,918 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2030646997] [2020-08-19 00:58:58,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:58:58,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:59,187 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:58:59,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:58:59,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:59,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:58:59,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:59,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:58:59,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:59,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:58:59,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:59,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:58:59,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:59,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 00:58:59,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:59,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 00:58:59,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:59,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:58:59,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:59,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:58:59,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:59,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-19 00:58:59,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:59,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-19 00:58:59,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:59,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-19 00:58:59,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:59,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:58:59,284 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2030646997] [2020-08-19 00:58:59,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:58:59,285 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 00:58:59,285 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145542323] [2020-08-19 00:58:59,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 00:58:59,286 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:58:59,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 00:58:59,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 00:58:59,287 INFO L87 Difference]: Start difference. First operand 208 states and 250 transitions. Second operand 6 states. [2020-08-19 00:58:59,620 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:59:00,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:59:00,174 INFO L93 Difference]: Finished difference Result 331 states and 413 transitions. [2020-08-19 00:59:00,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 00:59:00,175 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 74 [2020-08-19 00:59:00,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:59:00,177 INFO L225 Difference]: With dead ends: 331 [2020-08-19 00:59:00,177 INFO L226 Difference]: Without dead ends: 147 [2020-08-19 00:59:00,179 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 [2020-08-19 00:59:00,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-08-19 00:59:00,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 135. [2020-08-19 00:59:00,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-08-19 00:59:00,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 150 transitions. [2020-08-19 00:59:00,209 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 150 transitions. Word has length 74 [2020-08-19 00:59:00,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:59:00,209 INFO L479 AbstractCegarLoop]: Abstraction has 135 states and 150 transitions. [2020-08-19 00:59:00,210 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 00:59:00,210 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 150 transitions. [2020-08-19 00:59:00,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-08-19 00:59:00,211 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:59:00,211 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] [2020-08-19 00:59:00,211 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 00:59:00,211 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:59:00,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:59:00,212 INFO L82 PathProgramCache]: Analyzing trace with hash 35008173, now seen corresponding path program 1 times [2020-08-19 00:59:00,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:59:00,212 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1600898375] [2020-08-19 00:59:00,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:59:00,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 00:59:00,278 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 00:59:00,278 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 00:59:00,282 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 00:59:00,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 12:59:00 BoogieIcfgContainer [2020-08-19 00:59:00,310 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 00:59:00,313 INFO L168 Benchmark]: Toolchain (without parser) took 13645.84 ms. Allocated memory was 137.4 MB in the beginning and 473.4 MB in the end (delta: 336.1 MB). Free memory was 99.1 MB in the beginning and 339.1 MB in the end (delta: -240.0 MB). Peak memory consumption was 96.0 MB. Max. memory is 7.1 GB. [2020-08-19 00:59:00,315 INFO L168 Benchmark]: CDTParser took 0.22 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: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-19 00:59:00,321 INFO L168 Benchmark]: CACSL2BoogieTranslator took 691.98 ms. Allocated memory was 137.4 MB in the beginning and 199.8 MB in the end (delta: 62.4 MB). Free memory was 98.9 MB in the beginning and 167.1 MB in the end (delta: -68.2 MB). Peak memory consumption was 24.6 MB. Max. memory is 7.1 GB. [2020-08-19 00:59:00,322 INFO L168 Benchmark]: Boogie Preprocessor took 91.95 ms. Allocated memory is still 199.8 MB. Free memory was 167.1 MB in the beginning and 162.9 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. [2020-08-19 00:59:00,323 INFO L168 Benchmark]: RCFGBuilder took 1207.44 ms. Allocated memory was 199.8 MB in the beginning and 229.1 MB in the end (delta: 29.4 MB). Free memory was 162.2 MB in the beginning and 192.5 MB in the end (delta: -30.3 MB). Peak memory consumption was 86.2 MB. Max. memory is 7.1 GB. [2020-08-19 00:59:00,324 INFO L168 Benchmark]: TraceAbstraction took 11649.15 ms. Allocated memory was 229.1 MB in the beginning and 473.4 MB in the end (delta: 244.3 MB). Free memory was 191.1 MB in the beginning and 339.1 MB in the end (delta: -148.1 MB). Peak memory consumption was 96.3 MB. Max. memory is 7.1 GB. [2020-08-19 00:59:00,334 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 691.98 ms. Allocated memory was 137.4 MB in the beginning and 199.8 MB in the end (delta: 62.4 MB). Free memory was 98.9 MB in the beginning and 167.1 MB in the end (delta: -68.2 MB). Peak memory consumption was 24.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 91.95 ms. Allocated memory is still 199.8 MB. Free memory was 167.1 MB in the beginning and 162.9 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1207.44 ms. Allocated memory was 199.8 MB in the beginning and 229.1 MB in the end (delta: 29.4 MB). Free memory was 162.2 MB in the beginning and 192.5 MB in the end (delta: -30.3 MB). Peak memory consumption was 86.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 11649.15 ms. Allocated memory was 229.1 MB in the beginning and 473.4 MB in the end (delta: 244.3 MB). Free memory was 191.1 MB in the beginning and 339.1 MB in the end (delta: -148.1 MB). Peak memory consumption was 96.3 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: 11.5s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 8.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 505 SDtfs, 782 SDslu, 258 SDs, 0 SdLazy, 1532 SolverSat, 485 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...