/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product31.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 03:24:39,843 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 03:24:39,846 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 03:24:39,871 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 03:24:39,872 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 03:24:39,873 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 03:24:39,875 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 03:24:39,877 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 03:24:39,878 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 03:24:39,879 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 03:24:39,880 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 03:24:39,881 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 03:24:39,882 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 03:24:39,883 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 03:24:39,884 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 03:24:39,885 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 03:24:39,886 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 03:24:39,887 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 03:24:39,889 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 03:24:39,891 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 03:24:39,893 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 03:24:39,894 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 03:24:39,895 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 03:24:39,896 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 03:24:39,899 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 03:24:39,899 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 03:24:39,900 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 03:24:39,901 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 03:24:39,901 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 03:24:39,902 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 03:24:39,902 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 03:24:39,903 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 03:24:39,907 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 03:24:39,908 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 03:24:39,912 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 03:24:39,912 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 03:24:39,913 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 03:24:39,913 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 03:24:39,914 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 03:24:39,915 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 03:24:39,916 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 03:24:39,917 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 03:24:39,960 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 03:24:39,960 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 03:24:39,962 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 03:24:39,962 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 03:24:39,962 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 03:24:39,963 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 03:24:39,963 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 03:24:39,963 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 03:24:39,964 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 03:24:39,964 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 03:24:39,965 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 03:24:39,965 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 03:24:39,965 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 03:24:39,966 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 03:24:39,966 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 03:24:39,966 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 03:24:39,966 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 03:24:39,967 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 03:24:39,967 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 03:24:39,967 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 03:24:39,967 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 03:24:39,967 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 03:24:39,968 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 03:24:39,968 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 03:24:39,968 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 03:24:39,968 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 03:24:39,968 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 03:24:39,969 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 03:24:39,969 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 03:24:39,969 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1; [2020-08-19 03:24:40,297 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 03:24:40,310 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 03:24:40,314 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 03:24:40,315 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 03:24:40,316 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 03:24:40,316 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product31.cil.c [2020-08-19 03:24:40,380 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/02cdd3fe4/1195a37cdf3749e2819569008f4dae17/FLAGb7b2fe5bc [2020-08-19 03:24:40,876 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 03:24:40,877 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product31.cil.c [2020-08-19 03:24:40,897 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/02cdd3fe4/1195a37cdf3749e2819569008f4dae17/FLAGb7b2fe5bc [2020-08-19 03:24:41,245 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/02cdd3fe4/1195a37cdf3749e2819569008f4dae17 [2020-08-19 03:24:41,254 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 03:24:41,256 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 03:24:41,257 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 03:24:41,258 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 03:24:41,261 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 03:24:41,262 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 03:24:41" (1/1) ... [2020-08-19 03:24:41,265 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1972044a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:24:41, skipping insertion in model container [2020-08-19 03:24:41,266 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 03:24:41" (1/1) ... [2020-08-19 03:24:41,274 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 03:24:41,335 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 03:24:41,806 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 03:24:41,819 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 03:24:41,894 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 03:24:41,938 INFO L208 MainTranslator]: Completed translation [2020-08-19 03:24:41,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:24:41 WrapperNode [2020-08-19 03:24:41,940 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 03:24:41,941 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 03:24:41,941 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 03:24:41,941 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 03:24:41,955 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:24:41" (1/1) ... [2020-08-19 03:24:41,957 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:24:41" (1/1) ... [2020-08-19 03:24:41,989 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:24:41" (1/1) ... [2020-08-19 03:24:41,990 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:24:41" (1/1) ... [2020-08-19 03:24:42,018 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:24:41" (1/1) ... [2020-08-19 03:24:42,030 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:24:41" (1/1) ... [2020-08-19 03:24:42,035 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:24:41" (1/1) ... [2020-08-19 03:24:42,042 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 03:24:42,043 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 03:24:42,043 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 03:24:42,043 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 03:24:42,044 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:24:41" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 03:24:42,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 03:24:42,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 03:24:42,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 03:24:42,121 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 03:24:42,121 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 03:24:42,121 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 03:24:42,122 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 03:24:42,122 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 03:24:42,122 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 03:24:42,123 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-19 03:24:42,123 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 03:24:42,123 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 03:24:42,123 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 03:24:42,123 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 03:24:42,124 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 03:24:42,124 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 03:24:42,125 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 03:24:42,125 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 03:24:42,125 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 03:24:42,125 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 03:24:42,126 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-19 03:24:42,126 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 03:24:42,126 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-19 03:24:42,126 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 03:24:42,128 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 03:24:42,129 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 03:24:42,129 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 03:24:42,129 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 03:24:42,129 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-19 03:24:42,129 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-19 03:24:42,130 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-19 03:24:42,130 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 03:24:42,130 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 03:24:42,131 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 03:24:42,131 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 03:24:42,131 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 03:24:42,131 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 03:24:42,131 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 03:24:42,131 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 03:24:42,131 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 03:24:42,132 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 03:24:42,132 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 03:24:42,132 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 03:24:42,132 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 03:24:42,132 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 03:24:42,132 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 03:24:42,132 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 03:24:42,133 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 03:24:42,133 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 03:24:42,133 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-19 03:24:42,133 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 03:24:42,133 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 03:24:42,133 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 03:24:42,134 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 03:24:42,134 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 03:24:42,134 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 03:24:42,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 03:24:42,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 03:24:42,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 03:24:42,135 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 03:24:42,135 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 03:24:42,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 03:24:42,135 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 03:24:42,135 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 03:24:42,136 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 03:24:42,136 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 03:24:42,136 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 03:24:42,136 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 03:24:42,136 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-19 03:24:42,136 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 03:24:42,136 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 03:24:42,137 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 03:24:42,137 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 03:24:42,138 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 03:24:42,138 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 03:24:42,139 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 03:24:42,139 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-19 03:24:42,140 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 03:24:42,140 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 03:24:42,140 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-19 03:24:42,140 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-19 03:24:42,140 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 03:24:42,140 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-19 03:24:42,140 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 03:24:42,141 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 03:24:42,141 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 03:24:42,141 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 03:24:42,141 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 03:24:42,141 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 03:24:42,141 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 03:24:42,141 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 03:24:42,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 03:24:42,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 03:24:42,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 03:24:43,246 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 03:24:43,248 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 03:24:43,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 03:24:43 BoogieIcfgContainer [2020-08-19 03:24:43,257 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 03:24:43,261 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 03:24:43,261 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 03:24:43,264 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 03:24:43,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 03:24:41" (1/3) ... [2020-08-19 03:24:43,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@eef0eb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 03:24:43, skipping insertion in model container [2020-08-19 03:24:43,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:24:41" (2/3) ... [2020-08-19 03:24:43,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@eef0eb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 03:24:43, skipping insertion in model container [2020-08-19 03:24:43,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 03:24:43" (3/3) ... [2020-08-19 03:24:43,269 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product31.cil.c [2020-08-19 03:24:43,279 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 03:24:43,288 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 03:24:43,303 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 03:24:43,336 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 03:24:43,336 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 03:24:43,336 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 03:24:43,337 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 03:24:43,337 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 03:24:43,337 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 03:24:43,338 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 03:24:43,338 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 03:24:43,368 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states. [2020-08-19 03:24:43,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-19 03:24:43,384 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:24:43,385 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:24:43,385 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:24:43,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:24:43,391 INFO L82 PathProgramCache]: Analyzing trace with hash -2139663592, now seen corresponding path program 1 times [2020-08-19 03:24:43,397 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:24:43,398 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [701697734] [2020-08-19 03:24:43,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:24:43,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:44,104 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:24:44,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:24:44,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:44,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:24:44,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:44,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:24:44,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:44,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:24:44,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:44,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:24:44,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:44,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 03:24:44,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:44,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 03:24:44,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:44,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 03:24:44,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:44,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:24:44,272 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [701697734] [2020-08-19 03:24:44,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:24:44,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 03:24:44,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359275920] [2020-08-19 03:24:44,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 03:24:44,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:24:44,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 03:24:44,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 03:24:44,298 INFO L87 Difference]: Start difference. First operand 182 states. Second operand 3 states. [2020-08-19 03:24:45,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:24:45,529 INFO L93 Difference]: Finished difference Result 305 states and 403 transitions. [2020-08-19 03:24:45,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 03:24:45,531 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-19 03:24:45,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:24:45,547 INFO L225 Difference]: With dead ends: 305 [2020-08-19 03:24:45,547 INFO L226 Difference]: Without dead ends: 165 [2020-08-19 03:24:45,552 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 03:24:45,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-08-19 03:24:45,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 131. [2020-08-19 03:24:45,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-08-19 03:24:45,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 156 transitions. [2020-08-19 03:24:45,652 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 156 transitions. Word has length 52 [2020-08-19 03:24:45,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:24:45,652 INFO L479 AbstractCegarLoop]: Abstraction has 131 states and 156 transitions. [2020-08-19 03:24:45,652 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 03:24:45,653 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 156 transitions. [2020-08-19 03:24:45,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-19 03:24:45,656 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:24:45,657 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:24:45,657 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 03:24:45,657 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:24:45,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:24:45,658 INFO L82 PathProgramCache]: Analyzing trace with hash 1114338562, now seen corresponding path program 1 times [2020-08-19 03:24:45,658 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:24:45,658 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2099382617] [2020-08-19 03:24:45,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:24:45,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:46,071 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:24:46,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:24:46,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:46,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:24:46,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:46,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:24:46,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:46,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:24:46,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:46,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:24:46,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:46,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 03:24:46,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:46,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 03:24:46,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:46,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 03:24:46,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:46,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:24:46,176 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2099382617] [2020-08-19 03:24:46,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:24:46,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 03:24:46,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071564045] [2020-08-19 03:24:46,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 03:24:46,180 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:24:46,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 03:24:46,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 03:24:46,181 INFO L87 Difference]: Start difference. First operand 131 states and 156 transitions. Second operand 4 states. [2020-08-19 03:24:46,580 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:24:47,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:24:47,372 INFO L93 Difference]: Finished difference Result 232 states and 286 transitions. [2020-08-19 03:24:47,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 03:24:47,372 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-19 03:24:47,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:24:47,397 INFO L225 Difference]: With dead ends: 232 [2020-08-19 03:24:47,397 INFO L226 Difference]: Without dead ends: 149 [2020-08-19 03:24:47,400 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-19 03:24:47,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-08-19 03:24:47,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 122. [2020-08-19 03:24:47,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-08-19 03:24:47,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 144 transitions. [2020-08-19 03:24:47,452 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 144 transitions. Word has length 53 [2020-08-19 03:24:47,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:24:47,453 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 144 transitions. [2020-08-19 03:24:47,453 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 03:24:47,454 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 144 transitions. [2020-08-19 03:24:47,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-19 03:24:47,457 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:24:47,457 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:24:47,458 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 03:24:47,458 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:24:47,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:24:47,458 INFO L82 PathProgramCache]: Analyzing trace with hash -1063304095, now seen corresponding path program 1 times [2020-08-19 03:24:47,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:24:47,459 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [839512989] [2020-08-19 03:24:47,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:24:47,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:47,771 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:24:47,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:24:47,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:47,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:24:47,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:47,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:24:47,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:47,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:24:47,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:47,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:24:47,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:47,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 03:24:47,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:47,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 03:24:47,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:47,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-19 03:24:47,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:47,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:24:47,892 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [839512989] [2020-08-19 03:24:47,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:24:47,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 03:24:47,893 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375529951] [2020-08-19 03:24:47,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 03:24:47,895 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:24:47,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 03:24:47,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 03:24:47,897 INFO L87 Difference]: Start difference. First operand 122 states and 144 transitions. Second operand 8 states. [2020-08-19 03:24:48,231 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:24:48,573 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:24:48,812 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:24:49,034 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:24:49,744 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:24:51,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:24:51,752 INFO L93 Difference]: Finished difference Result 424 states and 531 transitions. [2020-08-19 03:24:51,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 03:24:51,753 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-19 03:24:51,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:24:51,760 INFO L225 Difference]: With dead ends: 424 [2020-08-19 03:24:51,760 INFO L226 Difference]: Without dead ends: 326 [2020-08-19 03:24:51,762 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-19 03:24:51,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2020-08-19 03:24:51,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 268. [2020-08-19 03:24:51,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-08-19 03:24:51,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 327 transitions. [2020-08-19 03:24:51,862 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 327 transitions. Word has length 57 [2020-08-19 03:24:51,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:24:51,862 INFO L479 AbstractCegarLoop]: Abstraction has 268 states and 327 transitions. [2020-08-19 03:24:51,862 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 03:24:51,862 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 327 transitions. [2020-08-19 03:24:51,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-08-19 03:24:51,866 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:24:51,866 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] [2020-08-19 03:24:51,866 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 03:24:51,866 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:24:51,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:24:51,867 INFO L82 PathProgramCache]: Analyzing trace with hash 248297521, now seen corresponding path program 1 times [2020-08-19 03:24:51,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:24:51,869 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [628234978] [2020-08-19 03:24:51,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:24:51,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:52,188 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:24:52,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:24:52,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:52,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:24:52,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:52,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:24:52,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:52,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:24:52,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:52,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:24:52,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:52,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 03:24:52,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:52,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 03:24:52,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:52,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-19 03:24:52,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:52,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-19 03:24:52,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:52,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:24:52,268 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [628234978] [2020-08-19 03:24:52,269 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:24:52,269 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 03:24:52,269 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587349009] [2020-08-19 03:24:52,270 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 03:24:52,270 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:24:52,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 03:24:52,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 03:24:52,271 INFO L87 Difference]: Start difference. First operand 268 states and 327 transitions. Second operand 8 states. [2020-08-19 03:24:52,631 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:24:54,008 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:24:54,390 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:24:54,678 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:24:54,976 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:24:55,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:24:55,723 INFO L93 Difference]: Finished difference Result 824 states and 1085 transitions. [2020-08-19 03:24:55,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-19 03:24:55,723 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-08-19 03:24:55,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:24:55,729 INFO L225 Difference]: With dead ends: 824 [2020-08-19 03:24:55,729 INFO L226 Difference]: Without dead ends: 580 [2020-08-19 03:24:55,734 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-19 03:24:55,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2020-08-19 03:24:55,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 513. [2020-08-19 03:24:55,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 513 states. [2020-08-19 03:24:55,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 641 transitions. [2020-08-19 03:24:55,940 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 641 transitions. Word has length 63 [2020-08-19 03:24:55,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:24:55,940 INFO L479 AbstractCegarLoop]: Abstraction has 513 states and 641 transitions. [2020-08-19 03:24:55,940 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 03:24:55,940 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 641 transitions. [2020-08-19 03:24:55,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-19 03:24:55,944 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:24:55,944 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] [2020-08-19 03:24:55,944 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 03:24:55,945 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:24:55,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:24:55,945 INFO L82 PathProgramCache]: Analyzing trace with hash -1905140809, now seen corresponding path program 1 times [2020-08-19 03:24:55,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:24:55,946 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1963999154] [2020-08-19 03:24:55,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:24:55,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:56,228 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:24:56,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:24:56,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:56,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:24:56,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:56,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:24:56,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:56,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:24:56,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:56,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:24:56,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:56,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 03:24:56,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:56,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 03:24:56,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:56,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 03:24:56,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:56,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-19 03:24:56,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:56,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-19 03:24:56,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:56,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:24:56,332 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1963999154] [2020-08-19 03:24:56,333 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:24:56,333 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 03:24:56,333 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224170060] [2020-08-19 03:24:56,335 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 03:24:56,335 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:24:56,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 03:24:56,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 03:24:56,336 INFO L87 Difference]: Start difference. First operand 513 states and 641 transitions. Second operand 6 states. [2020-08-19 03:24:56,670 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:24:57,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:24:57,485 INFO L93 Difference]: Finished difference Result 845 states and 1092 transitions. [2020-08-19 03:24:57,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 03:24:57,486 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-08-19 03:24:57,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:24:57,490 INFO L225 Difference]: With dead ends: 845 [2020-08-19 03:24:57,490 INFO L226 Difference]: Without dead ends: 356 [2020-08-19 03:24:57,492 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-08-19 03:24:57,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2020-08-19 03:24:57,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 335. [2020-08-19 03:24:57,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2020-08-19 03:24:57,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 386 transitions. [2020-08-19 03:24:57,553 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 386 transitions. Word has length 67 [2020-08-19 03:24:57,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:24:57,554 INFO L479 AbstractCegarLoop]: Abstraction has 335 states and 386 transitions. [2020-08-19 03:24:57,554 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 03:24:57,554 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 386 transitions. [2020-08-19 03:24:57,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-19 03:24:57,556 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:24:57,556 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] [2020-08-19 03:24:57,556 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 03:24:57,556 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:24:57,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:24:57,557 INFO L82 PathProgramCache]: Analyzing trace with hash -1719041065, now seen corresponding path program 1 times [2020-08-19 03:24:57,557 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:24:57,557 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1347478271] [2020-08-19 03:24:57,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:24:57,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 03:24:57,625 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 03:24:57,625 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 03:24:57,630 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 03:24:57,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 03:24:57 BoogieIcfgContainer [2020-08-19 03:24:57,663 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 03:24:57,665 INFO L168 Benchmark]: Toolchain (without parser) took 16409.39 ms. Allocated memory was 147.8 MB in the beginning and 506.5 MB in the end (delta: 358.6 MB). Free memory was 103.0 MB in the beginning and 411.9 MB in the end (delta: -308.9 MB). Peak memory consumption was 49.7 MB. Max. memory is 7.1 GB. [2020-08-19 03:24:57,666 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-19 03:24:57,667 INFO L168 Benchmark]: CACSL2BoogieTranslator took 683.14 ms. Allocated memory was 147.8 MB in the beginning and 203.9 MB in the end (delta: 56.1 MB). Free memory was 102.8 MB in the beginning and 168.9 MB in the end (delta: -66.2 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2020-08-19 03:24:57,668 INFO L168 Benchmark]: Boogie Preprocessor took 101.84 ms. Allocated memory is still 203.9 MB. Free memory was 168.9 MB in the beginning and 165.0 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. [2020-08-19 03:24:57,669 INFO L168 Benchmark]: RCFGBuilder took 1214.09 ms. Allocated memory was 203.9 MB in the beginning and 234.9 MB in the end (delta: 30.9 MB). Free memory was 165.0 MB in the beginning and 188.9 MB in the end (delta: -23.9 MB). Peak memory consumption was 78.6 MB. Max. memory is 7.1 GB. [2020-08-19 03:24:57,670 INFO L168 Benchmark]: TraceAbstraction took 14402.72 ms. Allocated memory was 234.9 MB in the beginning and 506.5 MB in the end (delta: 271.6 MB). Free memory was 188.9 MB in the beginning and 411.9 MB in the end (delta: -223.0 MB). Peak memory consumption was 48.6 MB. Max. memory is 7.1 GB. [2020-08-19 03:24:57,674 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 683.14 ms. Allocated memory was 147.8 MB in the beginning and 203.9 MB in the end (delta: 56.1 MB). Free memory was 102.8 MB in the beginning and 168.9 MB in the end (delta: -66.2 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 101.84 ms. Allocated memory is still 203.9 MB. Free memory was 168.9 MB in the beginning and 165.0 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1214.09 ms. Allocated memory was 203.9 MB in the beginning and 234.9 MB in the end (delta: 30.9 MB). Free memory was 165.0 MB in the beginning and 188.9 MB in the end (delta: -23.9 MB). Peak memory consumption was 78.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 14402.72 ms. Allocated memory was 234.9 MB in the beginning and 506.5 MB in the end (delta: 271.6 MB). Free memory was 188.9 MB in the beginning and 411.9 MB in the end (delta: -223.0 MB). Peak memory consumption was 48.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 140]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L47] int waterLevel = 1; [L48] int methaneLevelCritical = 0; [L314] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L585] int pumpRunning = 0; [L586] int systemActive = 1; [L868] int cleanupTimeShifts = 4; [L941] int retValue_acc ; [L942] int tmp ; [L946] FCALL select_helpers() [L947] FCALL select_features() [L948] CALL, EXPR valid_product() [L859] int retValue_acc ; [L862] retValue_acc = 1 [L863] return (retValue_acc); [L948] RET, EXPR valid_product() [L948] tmp = valid_product() [L950] COND TRUE \read(tmp) [L952] FCALL setup() [L953] CALL runTest() [L935] CALL test() [L515] int splverifierCounter ; [L516] int tmp ; [L517] int tmp___0 ; [L518] int tmp___1 ; [L519] int tmp___2 ; [L522] splverifierCounter = 0 [L524] COND TRUE 1 [L526] COND TRUE splverifierCounter < 4 [L532] tmp = __VERIFIER_nondet_int() [L534] COND TRUE \read(tmp) [L536] CALL waterRise() [L65] COND TRUE waterLevel < 2 [L66] waterLevel = waterLevel + 1 [L536] RET waterRise() [L542] tmp___0 = __VERIFIER_nondet_int() [L544] COND FALSE !(\read(tmp___0)) [L552] tmp___2 = __VERIFIER_nondet_int() [L554] COND FALSE !(\read(tmp___2)) [L558] tmp___1 = __VERIFIER_nondet_int() [L560] COND TRUE \read(tmp___1) [L562] CALL stopSystem() [L784] COND FALSE !(\read(pumpRunning)) [L791] systemActive = 0 [L562] RET stopSystem() [L569] CALL timeShift() [L593] COND FALSE !(\read(pumpRunning)) [L600] COND FALSE !(\read(systemActive)) [L608] CALL __utac_acc__Specification3_spec__1() [L797] int tmp ; [L798] int tmp___0 ; [L799] int tmp___1 ; [L803] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L803] RET, EXPR isMethaneLevelCritical() [L803] tmp = isMethaneLevelCritical() [L805] COND FALSE !(\read(tmp)) [L809] CALL, EXPR getWaterLevel() [L118] int retValue_acc ; [L121] retValue_acc = waterLevel [L122] return (retValue_acc); [L809] RET, EXPR getWaterLevel() [L809] tmp___0 = getWaterLevel() [L811] COND TRUE tmp___0 == 2 [L813] CALL, EXPR isPumpRunning() [L717] int retValue_acc ; [L720] retValue_acc = pumpRunning [L721] return (retValue_acc); [L813] RET, EXPR isPumpRunning() [L813] tmp___1 = isPumpRunning() [L815] COND FALSE !(\read(tmp___1)) [L819] CALL __automaton_fail() [L140] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 240 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 14.2s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 10.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 558 SDtfs, 882 SDslu, 395 SDs, 0 SdLazy, 2087 SolverSat, 543 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 134 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 4.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=513occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 5 MinimizatonAttempts, 207 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 359 NumberOfCodeBlocks, 359 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 287 ConstructedInterpolants, 0 QuantifiedInterpolants, 82182 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...