/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 false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product51.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-89f541c [2020-08-27 21:33:44,333 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-27 21:33:44,337 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-27 21:33:44,380 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-27 21:33:44,380 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-27 21:33:44,391 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-27 21:33:44,394 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-27 21:33:44,397 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-27 21:33:44,399 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-27 21:33:44,401 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-27 21:33:44,402 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-27 21:33:44,404 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-27 21:33:44,405 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-27 21:33:44,409 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-27 21:33:44,412 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-27 21:33:44,415 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-27 21:33:44,416 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-27 21:33:44,419 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-27 21:33:44,421 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-27 21:33:44,424 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-27 21:33:44,425 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-27 21:33:44,427 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-27 21:33:44,428 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-27 21:33:44,429 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-27 21:33:44,431 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-27 21:33:44,431 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-27 21:33:44,431 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-27 21:33:44,432 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-27 21:33:44,433 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-27 21:33:44,434 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-27 21:33:44,434 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-27 21:33:44,435 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-27 21:33:44,436 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-27 21:33:44,437 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-27 21:33:44,438 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-27 21:33:44,438 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-27 21:33:44,439 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-27 21:33:44,439 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-27 21:33:44,439 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-27 21:33:44,440 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-27 21:33:44,441 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-27 21:33:44,442 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 [2020-08-27 21:33:44,467 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-27 21:33:44,467 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-27 21:33:44,469 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-27 21:33:44,469 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-27 21:33:44,469 INFO L138 SettingsManager]: * Use SBE=true [2020-08-27 21:33:44,469 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-27 21:33:44,470 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-27 21:33:44,470 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-27 21:33:44,470 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-27 21:33:44,470 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-27 21:33:44,470 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-27 21:33:44,471 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-27 21:33:44,471 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-27 21:33:44,471 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-27 21:33:44,471 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-27 21:33:44,471 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-27 21:33:44,472 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-27 21:33:44,472 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-27 21:33:44,472 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-27 21:33:44,472 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-27 21:33:44,472 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-27 21:33:44,473 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-27 21:33:44,473 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-27 21:33:44,473 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-27 21:33:44,473 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-27 21:33:44,474 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-27 21:33:44,474 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-27 21:33:44,474 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-27 21:33:44,474 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-27 21:33:44,474 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 -> false [2020-08-27 21:33:44,926 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-27 21:33:44,955 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-27 21:33:44,960 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-27 21:33:44,962 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-27 21:33:44,963 INFO L275 PluginConnector]: CDTParser initialized [2020-08-27 21:33:44,964 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product51.cil.c [2020-08-27 21:33:45,058 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f6bccf00c/1d87bb5ab9e54f3d80eea3de1f27b464/FLAGf0d8b0927 [2020-08-27 21:33:45,716 INFO L306 CDTParser]: Found 1 translation units. [2020-08-27 21:33:45,717 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product51.cil.c [2020-08-27 21:33:45,735 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f6bccf00c/1d87bb5ab9e54f3d80eea3de1f27b464/FLAGf0d8b0927 [2020-08-27 21:33:45,934 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f6bccf00c/1d87bb5ab9e54f3d80eea3de1f27b464 [2020-08-27 21:33:45,951 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-27 21:33:45,953 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-27 21:33:45,957 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-27 21:33:45,957 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-27 21:33:45,962 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-27 21:33:45,963 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 09:33:45" (1/1) ... [2020-08-27 21:33:45,969 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@538d8bff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:33:45, skipping insertion in model container [2020-08-27 21:33:45,969 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 09:33:45" (1/1) ... [2020-08-27 21:33:45,980 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-27 21:33:46,057 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-27 21:33:46,430 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-27 21:33:46,539 INFO L203 MainTranslator]: Completed pre-run [2020-08-27 21:33:46,629 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-27 21:33:46,674 INFO L208 MainTranslator]: Completed translation [2020-08-27 21:33:46,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:33:46 WrapperNode [2020-08-27 21:33:46,674 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-27 21:33:46,676 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-27 21:33:46,676 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-27 21:33:46,676 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-27 21:33:46,691 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:33:46" (1/1) ... [2020-08-27 21:33:46,692 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:33:46" (1/1) ... [2020-08-27 21:33:46,714 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:33:46" (1/1) ... [2020-08-27 21:33:46,715 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:33:46" (1/1) ... [2020-08-27 21:33:46,745 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:33:46" (1/1) ... [2020-08-27 21:33:46,756 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:33:46" (1/1) ... [2020-08-27 21:33:46,762 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:33:46" (1/1) ... [2020-08-27 21:33:46,770 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-27 21:33:46,771 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-27 21:33:46,771 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-27 21:33:46,771 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-27 21:33:46,773 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:33:46" (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 [2020-08-27 21:33:46,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-27 21:33:46,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-27 21:33:46,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-27 21:33:46,855 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-27 21:33:46,856 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-27 21:33:46,856 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-27 21:33:46,857 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-27 21:33:46,857 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-27 21:33:46,857 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-27 21:33:46,858 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-27 21:33:46,858 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-27 21:33:46,859 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-27 21:33:46,859 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-27 21:33:46,859 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-27 21:33:46,859 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-27 21:33:46,860 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-27 21:33:46,860 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-27 21:33:46,861 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-27 21:33:46,861 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-27 21:33:46,861 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-27 21:33:46,861 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-27 21:33:46,861 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-27 21:33:46,862 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-27 21:33:46,862 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-27 21:33:46,863 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-27 21:33:46,863 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-27 21:33:46,864 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-27 21:33:46,864 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-27 21:33:46,864 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-27 21:33:46,864 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-27 21:33:46,865 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-27 21:33:46,865 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-27 21:33:46,865 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-27 21:33:46,865 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-27 21:33:46,865 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-27 21:33:46,865 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-27 21:33:46,866 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-27 21:33:46,866 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-27 21:33:46,866 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-27 21:33:46,866 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-27 21:33:46,866 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-27 21:33:46,866 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-27 21:33:46,867 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-27 21:33:46,867 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-27 21:33:46,867 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-27 21:33:46,867 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-27 21:33:46,867 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-27 21:33:46,867 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-27 21:33:46,867 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-27 21:33:46,868 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-27 21:33:46,868 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-27 21:33:46,868 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-27 21:33:46,868 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-27 21:33:46,868 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-27 21:33:46,868 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-27 21:33:46,869 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-27 21:33:46,869 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-27 21:33:46,869 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-27 21:33:46,869 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-27 21:33:46,870 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-27 21:33:46,870 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-27 21:33:46,870 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-27 21:33:46,870 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-27 21:33:46,870 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-27 21:33:46,871 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-27 21:33:46,871 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-27 21:33:46,871 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-27 21:33:46,871 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-27 21:33:46,871 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-27 21:33:46,871 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-27 21:33:46,872 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-27 21:33:46,872 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-27 21:33:46,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-27 21:33:46,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-27 21:33:46,873 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-27 21:33:46,873 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-27 21:33:46,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-27 21:33:46,874 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-27 21:33:46,874 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-27 21:33:46,874 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-27 21:33:46,875 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-27 21:33:46,875 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-27 21:33:46,876 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-27 21:33:46,876 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-27 21:33:46,876 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-27 21:33:46,876 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-27 21:33:46,876 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-27 21:33:46,877 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-27 21:33:46,877 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-27 21:33:46,877 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-27 21:33:46,878 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-27 21:33:46,878 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-27 21:33:46,878 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-27 21:33:46,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-27 21:33:46,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-27 21:33:46,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-27 21:33:47,957 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-27 21:33:47,958 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-27 21:33:47,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 09:33:47 BoogieIcfgContainer [2020-08-27 21:33:47,964 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-27 21:33:47,965 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-27 21:33:47,965 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-27 21:33:47,969 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-27 21:33:47,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 09:33:45" (1/3) ... [2020-08-27 21:33:47,971 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dbacd01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 09:33:47, skipping insertion in model container [2020-08-27 21:33:47,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:33:46" (2/3) ... [2020-08-27 21:33:47,971 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dbacd01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 09:33:47, skipping insertion in model container [2020-08-27 21:33:47,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 09:33:47" (3/3) ... [2020-08-27 21:33:47,974 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product51.cil.c [2020-08-27 21:33:47,986 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-27 21:33:47,997 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-27 21:33:48,021 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-27 21:33:48,051 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-27 21:33:48,052 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-27 21:33:48,052 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-27 21:33:48,052 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-27 21:33:48,052 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-27 21:33:48,052 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-27 21:33:48,052 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-27 21:33:48,053 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-27 21:33:48,078 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states. [2020-08-27 21:33:48,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-27 21:33:48,090 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:33:48,091 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] [2020-08-27 21:33:48,091 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:33:48,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:33:48,099 INFO L82 PathProgramCache]: Analyzing trace with hash -199381509, now seen corresponding path program 1 times [2020-08-27 21:33:48,111 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:33:48,111 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1039667879] [2020-08-27 21:33:48,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:33:48,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:33:48,930 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:33:48,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:33:48,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:33:49,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:33:49,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:33:49,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:33:49,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:33:49,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:33:49,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:33:49,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:33:49,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:33:49,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-27 21:33:49,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:33:49,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-27 21:33:49,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:33:49,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:33:49,049 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1039667879] [2020-08-27 21:33:49,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:33:49,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-27 21:33:49,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515975044] [2020-08-27 21:33:49,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-27 21:33:49,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:33:49,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-27 21:33:49,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-27 21:33:49,083 INFO L87 Difference]: Start difference. First operand 180 states. Second operand 3 states. [2020-08-27 21:33:50,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:33:50,314 INFO L93 Difference]: Finished difference Result 311 states and 407 transitions. [2020-08-27 21:33:50,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-27 21:33:50,317 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-27 21:33:50,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:33:50,335 INFO L225 Difference]: With dead ends: 311 [2020-08-27 21:33:50,336 INFO L226 Difference]: Without dead ends: 168 [2020-08-27 21:33:50,342 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-27 21:33:50,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-08-27 21:33:50,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 134. [2020-08-27 21:33:50,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-08-27 21:33:50,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 158 transitions. [2020-08-27 21:33:50,476 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 158 transitions. Word has length 46 [2020-08-27 21:33:50,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:33:50,477 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 158 transitions. [2020-08-27 21:33:50,477 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-27 21:33:50,478 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 158 transitions. [2020-08-27 21:33:50,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-27 21:33:50,488 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:33:50,488 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] [2020-08-27 21:33:50,489 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-27 21:33:50,489 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:33:50,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:33:50,489 INFO L82 PathProgramCache]: Analyzing trace with hash 822116352, now seen corresponding path program 1 times [2020-08-27 21:33:50,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:33:50,490 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [484620950] [2020-08-27 21:33:50,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:33:50,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:33:50,956 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:33:50,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:33:50,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:33:50,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:33:50,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:33:50,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:33:50,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:33:51,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:33:51,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:33:51,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:33:51,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:33:51,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-27 21:33:51,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:33:51,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-27 21:33:51,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:33:51,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:33:51,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [484620950] [2020-08-27 21:33:51,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:33:51,017 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-27 21:33:51,017 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574841006] [2020-08-27 21:33:51,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-27 21:33:51,020 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:33:51,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-27 21:33:51,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-27 21:33:51,021 INFO L87 Difference]: Start difference. First operand 134 states and 158 transitions. Second operand 4 states. [2020-08-27 21:33:51,469 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:33:52,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:33:52,443 INFO L93 Difference]: Finished difference Result 238 states and 290 transitions. [2020-08-27 21:33:52,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-27 21:33:52,444 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-27 21:33:52,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:33:52,448 INFO L225 Difference]: With dead ends: 238 [2020-08-27 21:33:52,449 INFO L226 Difference]: Without dead ends: 152 [2020-08-27 21:33:52,451 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-27 21:33:52,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-08-27 21:33:52,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 125. [2020-08-27 21:33:52,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-08-27 21:33:52,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 146 transitions. [2020-08-27 21:33:52,491 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 146 transitions. Word has length 47 [2020-08-27 21:33:52,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:33:52,492 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 146 transitions. [2020-08-27 21:33:52,492 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-27 21:33:52,492 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 146 transitions. [2020-08-27 21:33:52,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-27 21:33:52,494 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:33:52,495 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] [2020-08-27 21:33:52,495 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-27 21:33:52,495 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:33:52,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:33:52,496 INFO L82 PathProgramCache]: Analyzing trace with hash -1772796698, now seen corresponding path program 1 times [2020-08-27 21:33:52,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:33:52,496 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1258184480] [2020-08-27 21:33:52,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:33:52,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:33:52,925 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:33:52,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:33:52,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:33:52,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:33:52,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:33:52,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:33:52,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:33:52,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:33:53,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:33:53,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:33:53,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:33:53,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-27 21:33:53,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:33:53,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-27 21:33:53,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:33:53,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:33:53,048 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1258184480] [2020-08-27 21:33:53,048 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:33:53,048 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-27 21:33:53,049 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020294786] [2020-08-27 21:33:53,049 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-27 21:33:53,050 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:33:53,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-27 21:33:53,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-27 21:33:53,050 INFO L87 Difference]: Start difference. First operand 125 states and 146 transitions. Second operand 8 states. [2020-08-27 21:33:53,471 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-27 21:33:53,889 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:33:54,201 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:33:54,488 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:33:55,363 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:33:57,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:33:57,359 INFO L93 Difference]: Finished difference Result 427 states and 530 transitions. [2020-08-27 21:33:57,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-27 21:33:57,361 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-27 21:33:57,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:33:57,366 INFO L225 Difference]: With dead ends: 427 [2020-08-27 21:33:57,366 INFO L226 Difference]: Without dead ends: 326 [2020-08-27 21:33:57,368 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-27 21:33:57,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2020-08-27 21:33:57,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 268. [2020-08-27 21:33:57,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-08-27 21:33:57,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 324 transitions. [2020-08-27 21:33:57,452 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 324 transitions. Word has length 51 [2020-08-27 21:33:57,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:33:57,452 INFO L479 AbstractCegarLoop]: Abstraction has 268 states and 324 transitions. [2020-08-27 21:33:57,452 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-27 21:33:57,453 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 324 transitions. [2020-08-27 21:33:57,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-27 21:33:57,455 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:33:57,456 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] [2020-08-27 21:33:57,456 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-27 21:33:57,456 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:33:57,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:33:57,456 INFO L82 PathProgramCache]: Analyzing trace with hash -1539786498, now seen corresponding path program 1 times [2020-08-27 21:33:57,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:33:57,457 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [653708421] [2020-08-27 21:33:57,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:33:57,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:33:57,871 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:33:57,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:33:57,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:33:57,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:33:57,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:33:57,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:33:57,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:33:57,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:33:57,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:33:57,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:33:57,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:33:57,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-27 21:33:57,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:33:58,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-27 21:33:58,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:33:58,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-27 21:33:58,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:33:58,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:33:58,027 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [653708421] [2020-08-27 21:33:58,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:33:58,027 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-27 21:33:58,028 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176858564] [2020-08-27 21:33:58,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-27 21:33:58,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:33:58,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-27 21:33:58,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-27 21:33:58,029 INFO L87 Difference]: Start difference. First operand 268 states and 324 transitions. Second operand 8 states. [2020-08-27 21:33:58,436 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-27 21:33:59,664 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:34:00,063 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:34:00,413 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:34:00,773 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-27 21:34:01,319 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:34:02,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:34:02,406 INFO L93 Difference]: Finished difference Result 862 states and 1117 transitions. [2020-08-27 21:34:02,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-27 21:34:02,407 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-27 21:34:02,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:34:02,415 INFO L225 Difference]: With dead ends: 862 [2020-08-27 21:34:02,415 INFO L226 Difference]: Without dead ends: 618 [2020-08-27 21:34:02,418 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-27 21:34:02,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2020-08-27 21:34:02,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 491. [2020-08-27 21:34:02,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 491 states. [2020-08-27 21:34:02,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 598 transitions. [2020-08-27 21:34:02,556 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 598 transitions. Word has length 57 [2020-08-27 21:34:02,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:34:02,557 INFO L479 AbstractCegarLoop]: Abstraction has 491 states and 598 transitions. [2020-08-27 21:34:02,557 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-27 21:34:02,557 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 598 transitions. [2020-08-27 21:34:02,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-27 21:34:02,561 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:34:02,561 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] [2020-08-27 21:34:02,561 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-27 21:34:02,562 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:34:02,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:34:02,562 INFO L82 PathProgramCache]: Analyzing trace with hash -1493126654, now seen corresponding path program 1 times [2020-08-27 21:34:02,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:34:02,563 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [798099691] [2020-08-27 21:34:02,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:34:02,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:02,969 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:34:02,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:34:02,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:03,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:34:03,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:03,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:34:03,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:03,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:34:03,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:03,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:34:03,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:03,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-27 21:34:03,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:03,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-27 21:34:03,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:03,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-27 21:34:03,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:03,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-27 21:34:03,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:03,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:34:03,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [798099691] [2020-08-27 21:34:03,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:34:03,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-27 21:34:03,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539989554] [2020-08-27 21:34:03,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-27 21:34:03,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:34:03,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-27 21:34:03,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-27 21:34:03,090 INFO L87 Difference]: Start difference. First operand 491 states and 598 transitions. Second operand 9 states. [2020-08-27 21:34:03,495 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-27 21:34:04,537 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:34:04,883 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:34:05,211 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:34:05,792 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-27 21:34:06,161 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:34:07,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:34:07,156 INFO L93 Difference]: Finished difference Result 1371 states and 1840 transitions. [2020-08-27 21:34:07,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-27 21:34:07,157 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 61 [2020-08-27 21:34:07,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:34:07,164 INFO L225 Difference]: With dead ends: 1371 [2020-08-27 21:34:07,165 INFO L226 Difference]: Without dead ends: 904 [2020-08-27 21:34:07,167 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-27 21:34:07,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 904 states. [2020-08-27 21:34:07,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 904 to 723. [2020-08-27 21:34:07,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 723 states. [2020-08-27 21:34:07,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 891 transitions. [2020-08-27 21:34:07,303 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 891 transitions. Word has length 61 [2020-08-27 21:34:07,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:34:07,303 INFO L479 AbstractCegarLoop]: Abstraction has 723 states and 891 transitions. [2020-08-27 21:34:07,304 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-27 21:34:07,304 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 891 transitions. [2020-08-27 21:34:07,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-27 21:34:07,306 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:34:07,306 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:34:07,306 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-27 21:34:07,307 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:34:07,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:34:07,307 INFO L82 PathProgramCache]: Analyzing trace with hash 807556796, now seen corresponding path program 1 times [2020-08-27 21:34:07,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:34:07,308 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [385287010] [2020-08-27 21:34:07,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:34:07,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:07,640 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:34:07,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:34:07,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:07,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:34:07,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:07,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:34:07,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:07,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:34:07,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:07,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:34:07,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:07,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-27 21:34:07,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:07,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-27 21:34:07,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:07,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:34:07,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:07,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:34:07,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:07,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:34:07,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:07,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:34:07,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:07,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-27 21:34:07,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:07,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-27 21:34:07,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:07,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:34:07,826 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [385287010] [2020-08-27 21:34:07,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:34:07,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-27 21:34:07,827 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326070455] [2020-08-27 21:34:07,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-27 21:34:07,828 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:34:07,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-27 21:34:07,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-27 21:34:07,828 INFO L87 Difference]: Start difference. First operand 723 states and 891 transitions. Second operand 9 states. [2020-08-27 21:34:08,887 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:34:09,201 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:34:09,516 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:34:09,829 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:34:10,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:34:10,986 INFO L93 Difference]: Finished difference Result 1679 states and 2233 transitions. [2020-08-27 21:34:10,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-27 21:34:10,986 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 83 [2020-08-27 21:34:10,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:34:11,000 INFO L225 Difference]: With dead ends: 1679 [2020-08-27 21:34:11,000 INFO L226 Difference]: Without dead ends: 980 [2020-08-27 21:34:11,003 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-27 21:34:11,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states. [2020-08-27 21:34:11,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 749. [2020-08-27 21:34:11,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 749 states. [2020-08-27 21:34:11,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 919 transitions. [2020-08-27 21:34:11,208 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 919 transitions. Word has length 83 [2020-08-27 21:34:11,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:34:11,208 INFO L479 AbstractCegarLoop]: Abstraction has 749 states and 919 transitions. [2020-08-27 21:34:11,209 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-27 21:34:11,209 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 919 transitions. [2020-08-27 21:34:11,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-27 21:34:11,214 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:34:11,214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:34:11,214 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-27 21:34:11,215 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:34:11,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:34:11,215 INFO L82 PathProgramCache]: Analyzing trace with hash 830189050, now seen corresponding path program 1 times [2020-08-27 21:34:11,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:34:11,216 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [603432624] [2020-08-27 21:34:11,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:34:11,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:11,546 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:34:11,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:34:11,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:11,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:34:11,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:11,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:34:11,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:11,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:34:11,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:11,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:34:11,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:11,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-27 21:34:11,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:11,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-27 21:34:11,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:11,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:34:11,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:11,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:34:11,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:11,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:34:11,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:11,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:34:11,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:11,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-27 21:34:11,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:11,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-27 21:34:11,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:11,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:34:11,753 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [603432624] [2020-08-27 21:34:11,758 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:34:11,759 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-27 21:34:11,759 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048638529] [2020-08-27 21:34:11,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-27 21:34:11,760 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:34:11,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-27 21:34:11,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-27 21:34:11,760 INFO L87 Difference]: Start difference. First operand 749 states and 919 transitions. Second operand 11 states. [2020-08-27 21:34:12,373 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:34:12,664 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:34:12,964 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:34:13,743 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:34:14,078 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:34:14,387 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:34:15,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:34:15,794 INFO L93 Difference]: Finished difference Result 1733 states and 2344 transitions. [2020-08-27 21:34:15,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-27 21:34:15,795 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 83 [2020-08-27 21:34:15,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:34:15,802 INFO L225 Difference]: With dead ends: 1733 [2020-08-27 21:34:15,802 INFO L226 Difference]: Without dead ends: 1008 [2020-08-27 21:34:15,805 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-27 21:34:15,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2020-08-27 21:34:15,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 765. [2020-08-27 21:34:15,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 765 states. [2020-08-27 21:34:15,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 935 transitions. [2020-08-27 21:34:15,949 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 935 transitions. Word has length 83 [2020-08-27 21:34:15,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:34:15,950 INFO L479 AbstractCegarLoop]: Abstraction has 765 states and 935 transitions. [2020-08-27 21:34:15,950 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-27 21:34:15,950 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 935 transitions. [2020-08-27 21:34:15,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-27 21:34:15,953 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:34:15,953 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:34:15,953 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-27 21:34:15,953 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:34:15,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:34:15,954 INFO L82 PathProgramCache]: Analyzing trace with hash 1855681049, now seen corresponding path program 1 times [2020-08-27 21:34:15,954 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:34:15,954 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1124015235] [2020-08-27 21:34:15,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:34:15,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:16,294 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:34:16,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:34:16,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:16,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:34:16,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:16,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:34:16,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:16,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:34:16,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:16,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:34:16,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:16,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-27 21:34:16,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:16,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-27 21:34:16,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:16,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:34:16,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:16,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:34:16,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:16,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:34:16,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:16,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:34:16,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:16,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-27 21:34:16,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:16,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-27 21:34:16,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:16,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:34:16,453 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1124015235] [2020-08-27 21:34:16,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:34:16,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-27 21:34:16,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334990377] [2020-08-27 21:34:16,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-27 21:34:16,456 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:34:16,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-27 21:34:16,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-27 21:34:16,456 INFO L87 Difference]: Start difference. First operand 765 states and 935 transitions. Second operand 7 states. [2020-08-27 21:34:16,873 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-27 21:34:17,492 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-27 21:34:20,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:34:20,172 INFO L93 Difference]: Finished difference Result 2622 states and 3569 transitions. [2020-08-27 21:34:20,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-27 21:34:20,172 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 83 [2020-08-27 21:34:20,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:34:20,185 INFO L225 Difference]: With dead ends: 2622 [2020-08-27 21:34:20,185 INFO L226 Difference]: Without dead ends: 1881 [2020-08-27 21:34:20,189 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-27 21:34:20,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1881 states. [2020-08-27 21:34:20,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1881 to 1579. [2020-08-27 21:34:20,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1579 states. [2020-08-27 21:34:20,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 1949 transitions. [2020-08-27 21:34:20,548 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 1949 transitions. Word has length 83 [2020-08-27 21:34:20,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:34:20,548 INFO L479 AbstractCegarLoop]: Abstraction has 1579 states and 1949 transitions. [2020-08-27 21:34:20,548 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-27 21:34:20,548 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 1949 transitions. [2020-08-27 21:34:20,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-08-27 21:34:20,551 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:34:20,552 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:34:20,552 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-27 21:34:20,552 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:34:20,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:34:20,553 INFO L82 PathProgramCache]: Analyzing trace with hash -1308897473, now seen corresponding path program 1 times [2020-08-27 21:34:20,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:34:20,553 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1129125990] [2020-08-27 21:34:20,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:34:20,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-27 21:34:20,653 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-27 21:34:20,653 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-27 21:34:20,659 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-27 21:34:20,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 09:34:20 BoogieIcfgContainer [2020-08-27 21:34:20,700 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-27 21:34:20,702 INFO L168 Benchmark]: Toolchain (without parser) took 34750.04 ms. Allocated memory was 140.5 MB in the beginning and 636.0 MB in the end (delta: 495.5 MB). Free memory was 102.6 MB in the beginning and 222.1 MB in the end (delta: -119.5 MB). Peak memory consumption was 375.9 MB. Max. memory is 7.1 GB. [2020-08-27 21:34:20,703 INFO L168 Benchmark]: CDTParser took 0.22 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: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-27 21:34:20,707 INFO L168 Benchmark]: CACSL2BoogieTranslator took 718.71 ms. Allocated memory was 140.5 MB in the beginning and 205.0 MB in the end (delta: 64.5 MB). Free memory was 102.4 MB in the beginning and 174.4 MB in the end (delta: -72.0 MB). Peak memory consumption was 28.8 MB. Max. memory is 7.1 GB. [2020-08-27 21:34:20,711 INFO L168 Benchmark]: Boogie Preprocessor took 94.55 ms. Allocated memory is still 205.0 MB. Free memory was 174.4 MB in the beginning and 170.3 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-08-27 21:34:20,716 INFO L168 Benchmark]: RCFGBuilder took 1193.11 ms. Allocated memory was 205.0 MB in the beginning and 237.5 MB in the end (delta: 32.5 MB). Free memory was 170.3 MB in the beginning and 198.2 MB in the end (delta: -27.9 MB). Peak memory consumption was 83.7 MB. Max. memory is 7.1 GB. [2020-08-27 21:34:20,717 INFO L168 Benchmark]: TraceAbstraction took 32735.18 ms. Allocated memory was 237.5 MB in the beginning and 636.0 MB in the end (delta: 398.5 MB). Free memory was 196.8 MB in the beginning and 222.1 MB in the end (delta: -25.3 MB). Peak memory consumption was 373.1 MB. Max. memory is 7.1 GB. [2020-08-27 21:34:20,723 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 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 718.71 ms. Allocated memory was 140.5 MB in the beginning and 205.0 MB in the end (delta: 64.5 MB). Free memory was 102.4 MB in the beginning and 174.4 MB in the end (delta: -72.0 MB). Peak memory consumption was 28.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 94.55 ms. Allocated memory is still 205.0 MB. Free memory was 174.4 MB in the beginning and 170.3 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1193.11 ms. Allocated memory was 205.0 MB in the beginning and 237.5 MB in the end (delta: 32.5 MB). Free memory was 170.3 MB in the beginning and 198.2 MB in the end (delta: -27.9 MB). Peak memory consumption was 83.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 32735.18 ms. Allocated memory was 237.5 MB in the beginning and 636.0 MB in the end (delta: 398.5 MB). Free memory was 196.8 MB in the beginning and 222.1 MB in the end (delta: -25.3 MB). Peak memory consumption was 373.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 704]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L121] int pumpRunning = 0; [L122] int systemActive = 1; [L503] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L773] int cleanupTimeShifts = 4; [L870] int waterLevel = 1; [L871] int methaneLevelCritical = 0; [L846] int retValue_acc ; [L847] int tmp ; [L851] FCALL select_helpers() [L852] FCALL select_features() [L853] CALL, EXPR valid_product() [L738] int retValue_acc ; [L741] retValue_acc = 1 [L742] return (retValue_acc); [L853] RET, EXPR valid_product() [L853] tmp = valid_product() [L855] COND TRUE \read(tmp) [L857] FCALL setup() [L858] CALL runTest() [L840] CALL test() [L46] int splverifierCounter ; [L47] int tmp ; [L48] int tmp___0 ; [L49] int tmp___1 ; [L50] int tmp___2 ; [L53] splverifierCounter = 0 [L55] COND TRUE 1 [L57] COND TRUE splverifierCounter < 4 [L63] tmp = __VERIFIER_nondet_int() [L65] COND TRUE \read(tmp) [L67] CALL waterRise() [L888] COND TRUE waterLevel < 2 [L889] waterLevel = waterLevel + 1 [L67] RET waterRise() [L73] tmp___0 = __VERIFIER_nondet_int() [L75] COND TRUE \read(tmp___0) [L77] CALL changeMethaneLevel() [L900] COND FALSE !(\read(methaneLevelCritical)) [L903] methaneLevelCritical = 1 [L77] RET changeMethaneLevel() [L83] tmp___2 = __VERIFIER_nondet_int() [L85] COND TRUE \read(tmp___2) [L100] CALL timeShift() [L129] COND FALSE !(\read(pumpRunning)) [L136] COND TRUE \read(systemActive) [L138] CALL processEnvironment() [L184] int tmp ; [L187] COND FALSE !(\read(pumpRunning)) [L202] CALL processEnvironment__wrappee__highWaterSensor() [L158] int tmp ; [L161] COND TRUE ! pumpRunning [L163] CALL, EXPR isHighWaterLevel() [L281] int retValue_acc ; [L282] int tmp ; [L283] int tmp___0 ; [L287] CALL, EXPR isHighWaterSensorDry() [L950] int retValue_acc ; [L953] COND FALSE !(waterLevel < 2) [L957] retValue_acc = 0 [L958] return (retValue_acc); [L287] RET, EXPR isHighWaterSensorDry() [L287] tmp = isHighWaterSensorDry() [L289] COND FALSE !(\read(tmp)) [L292] tmp___0 = 1 [L294] retValue_acc = tmp___0 [L295] return (retValue_acc); [L163] RET, EXPR isHighWaterLevel() [L163] tmp = isHighWaterLevel() [L165] COND TRUE \read(tmp) [L167] CALL activatePump() [L212] pumpRunning = 1 [L167] RET activatePump() [L202] RET processEnvironment__wrappee__highWaterSensor() [L138] RET processEnvironment() [L144] CALL __utac_acc__Specification1_spec__1() [L748] int tmp ; [L749] int tmp___0 ; [L753] CALL, EXPR isMethaneLevelCritical() [L909] int retValue_acc ; [L912] retValue_acc = methaneLevelCritical [L913] return (retValue_acc); [L753] RET, EXPR isMethaneLevelCritical() [L753] tmp = isMethaneLevelCritical() [L755] COND TRUE \read(tmp) [L757] CALL, EXPR isPumpRunning() [L236] int retValue_acc ; [L239] retValue_acc = pumpRunning [L240] return (retValue_acc); [L757] RET, EXPR isPumpRunning() [L757] tmp___0 = isPumpRunning() [L759] COND TRUE \read(tmp___0) [L761] CALL __automaton_fail() [L704] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 41 procedures, 241 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 32.6s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 26.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 986 SDtfs, 1945 SDslu, 1022 SDs, 0 SdLazy, 5142 SolverSat, 1211 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 14.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 268 GetRequests, 178 SyntacticMatches, 4 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 11.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1579occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 1203 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 3.9s InterpolantComputationTime, 598 NumberOfCodeBlocks, 598 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 503 ConstructedInterpolants, 0 QuantifiedInterpolants, 150744 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...