/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product39.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 00:54:32,822 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 00:54:32,825 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 00:54:32,864 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 00:54:32,865 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 00:54:32,875 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 00:54:32,877 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 00:54:32,880 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 00:54:32,883 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 00:54:32,884 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 00:54:32,885 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 00:54:32,886 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 00:54:32,886 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 00:54:32,887 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 00:54:32,888 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 00:54:32,889 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 00:54:32,890 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 00:54:32,891 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 00:54:32,893 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 00:54:32,894 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 00:54:32,896 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 00:54:32,897 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 00:54:32,898 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 00:54:32,899 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 00:54:32,901 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 00:54:32,901 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 00:54:32,902 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 00:54:32,902 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 00:54:32,903 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 00:54:32,904 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 00:54:32,904 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 00:54:32,904 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 00:54:32,905 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 00:54:32,906 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 00:54:32,907 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 00:54:32,907 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 00:54:32,908 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 00:54:32,908 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 00:54:32,908 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 00:54:32,909 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 00:54:32,910 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 00:54:32,911 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 00:54:32,932 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 00:54:32,933 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 00:54:32,936 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 00:54:32,936 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 00:54:32,937 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 00:54:32,937 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 00:54:32,937 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 00:54:32,937 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 00:54:32,937 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 00:54:32,938 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 00:54:32,938 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 00:54:32,938 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 00:54:32,938 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 00:54:32,938 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 00:54:32,939 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 00:54:32,939 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 00:54:32,939 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 00:54:32,939 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 00:54:32,939 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 00:54:32,940 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 00:54:32,940 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 00:54:32,940 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 00:54:32,940 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 00:54:32,940 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 00:54:32,941 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 00:54:32,941 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 00:54:32,941 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 00:54:32,941 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 00:54:32,941 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 00:54:32,942 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; [2020-08-19 00:54:33,244 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 00:54:33,261 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 00:54:33,266 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 00:54:33,268 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 00:54:33,269 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 00:54:33,270 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product39.cil.c [2020-08-19 00:54:33,333 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ef966553c/a9b871aa8cac4fee8f55eab2d980775b/FLAG75daee850 [2020-08-19 00:54:33,906 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 00:54:33,907 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product39.cil.c [2020-08-19 00:54:33,921 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ef966553c/a9b871aa8cac4fee8f55eab2d980775b/FLAG75daee850 [2020-08-19 00:54:34,172 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ef966553c/a9b871aa8cac4fee8f55eab2d980775b [2020-08-19 00:54:34,181 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 00:54:34,182 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 00:54:34,184 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 00:54:34,184 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 00:54:34,187 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 00:54:34,189 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:54:34" (1/1) ... [2020-08-19 00:54:34,192 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43518757 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:54:34, skipping insertion in model container [2020-08-19 00:54:34,192 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:54:34" (1/1) ... [2020-08-19 00:54:34,201 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 00:54:34,262 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 00:54:34,671 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:54:34,688 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 00:54:34,765 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:54:34,805 INFO L208 MainTranslator]: Completed translation [2020-08-19 00:54:34,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:54:34 WrapperNode [2020-08-19 00:54:34,806 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 00:54:34,807 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 00:54:34,807 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 00:54:34,807 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 00:54:34,820 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:54:34" (1/1) ... [2020-08-19 00:54:34,821 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:54:34" (1/1) ... [2020-08-19 00:54:34,841 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:54:34" (1/1) ... [2020-08-19 00:54:34,842 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:54:34" (1/1) ... [2020-08-19 00:54:34,873 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:54:34" (1/1) ... [2020-08-19 00:54:34,884 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:54:34" (1/1) ... [2020-08-19 00:54:34,890 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:54:34" (1/1) ... [2020-08-19 00:54:34,898 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 00:54:34,898 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 00:54:34,898 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 00:54:34,899 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 00:54:34,899 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:54:34" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 00:54:34,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 00:54:34,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 00:54:34,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 00:54:34,972 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 00:54:34,972 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 00:54:34,972 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 00:54:34,973 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 00:54:34,973 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 00:54:34,973 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 00:54:34,974 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-19 00:54:34,974 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 00:54:34,975 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 00:54:34,975 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 00:54:34,975 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 00:54:34,975 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 00:54:34,976 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 00:54:34,976 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 00:54:34,977 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 00:54:34,977 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 00:54:34,977 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 00:54:34,977 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 00:54:34,977 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 00:54:34,977 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 00:54:34,978 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 00:54:34,978 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 00:54:34,979 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 00:54:34,979 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 00:54:34,979 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 00:54:34,979 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 00:54:34,979 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-19 00:54:34,980 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 00:54:34,980 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 00:54:34,980 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 00:54:34,980 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 00:54:34,980 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 00:54:34,980 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 00:54:34,981 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 00:54:34,981 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 00:54:34,981 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 00:54:34,981 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 00:54:34,981 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 00:54:34,981 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 00:54:34,981 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 00:54:34,982 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 00:54:34,982 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 00:54:34,982 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 00:54:34,982 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 00:54:34,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 00:54:34,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 00:54:34,982 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 00:54:34,983 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 00:54:34,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 00:54:34,983 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 00:54:34,983 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 00:54:34,984 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 00:54:34,984 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 00:54:34,984 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 00:54:34,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 00:54:34,984 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 00:54:34,985 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 00:54:34,985 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 00:54:34,985 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 00:54:34,985 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-19 00:54:34,986 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 00:54:34,986 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 00:54:34,986 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 00:54:34,986 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 00:54:34,986 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 00:54:34,986 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 00:54:34,986 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-19 00:54:34,987 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 00:54:34,988 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 00:54:34,988 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 00:54:34,988 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 00:54:34,989 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 00:54:34,989 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 00:54:34,990 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 00:54:34,990 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 00:54:34,990 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 00:54:34,990 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 00:54:34,990 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 00:54:34,990 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 00:54:34,991 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 00:54:34,991 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 00:54:34,991 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 00:54:34,991 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 00:54:34,991 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 00:54:34,992 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 00:54:34,992 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 00:54:34,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 00:54:34,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 00:54:34,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 00:54:36,000 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 00:54:36,001 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 00:54:36,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:54:36 BoogieIcfgContainer [2020-08-19 00:54:36,007 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 00:54:36,008 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 00:54:36,008 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 00:54:36,012 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 00:54:36,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 12:54:34" (1/3) ... [2020-08-19 00:54:36,013 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cb4a95f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:54:36, skipping insertion in model container [2020-08-19 00:54:36,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:54:34" (2/3) ... [2020-08-19 00:54:36,014 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cb4a95f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:54:36, skipping insertion in model container [2020-08-19 00:54:36,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:54:36" (3/3) ... [2020-08-19 00:54:36,016 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product39.cil.c [2020-08-19 00:54:36,027 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 00:54:36,036 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 00:54:36,050 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 00:54:36,076 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 00:54:36,077 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 00:54:36,077 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 00:54:36,077 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 00:54:36,077 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 00:54:36,077 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 00:54:36,078 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 00:54:36,078 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 00:54:36,100 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states. [2020-08-19 00:54:36,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-19 00:54:36,111 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:54:36,112 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] [2020-08-19 00:54:36,113 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:54:36,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:54:36,119 INFO L82 PathProgramCache]: Analyzing trace with hash -1081228888, now seen corresponding path program 1 times [2020-08-19 00:54:36,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:54:36,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1097552301] [2020-08-19 00:54:36,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:54:36,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:54:36,785 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:54:36,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:54:36,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:54:36,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:54:36,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:54:36,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:54:36,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:54:36,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:54:36,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:54:36,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:54:36,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:54:36,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 00:54:36,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:54:36,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 00:54:36,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:54:36,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:54:36,908 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1097552301] [2020-08-19 00:54:36,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:54:36,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 00:54:36,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207791796] [2020-08-19 00:54:36,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 00:54:36,917 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:54:36,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 00:54:36,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 00:54:36,941 INFO L87 Difference]: Start difference. First operand 172 states. Second operand 3 states. [2020-08-19 00:54:38,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:54:38,158 INFO L93 Difference]: Finished difference Result 301 states and 397 transitions. [2020-08-19 00:54:38,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 00:54:38,160 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-19 00:54:38,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:54:38,175 INFO L225 Difference]: With dead ends: 301 [2020-08-19 00:54:38,175 INFO L226 Difference]: Without dead ends: 163 [2020-08-19 00:54:38,180 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 00:54:38,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-08-19 00:54:38,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 129. [2020-08-19 00:54:38,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-08-19 00:54:38,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 153 transitions. [2020-08-19 00:54:38,280 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 153 transitions. Word has length 46 [2020-08-19 00:54:38,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:54:38,281 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 153 transitions. [2020-08-19 00:54:38,281 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 00:54:38,281 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 153 transitions. [2020-08-19 00:54:38,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-19 00:54:38,284 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:54:38,285 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] [2020-08-19 00:54:38,285 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 00:54:38,285 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:54:38,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:54:38,286 INFO L82 PathProgramCache]: Analyzing trace with hash -1618039840, now seen corresponding path program 1 times [2020-08-19 00:54:38,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:54:38,286 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [805545250] [2020-08-19 00:54:38,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:54:38,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:54:38,683 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:54:38,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:54:38,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:54:38,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:54:38,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:54:38,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:54:38,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:54:38,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:54:38,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:54:38,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:54:38,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:54:38,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 00:54:38,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:54:38,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 00:54:38,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:54:38,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:54:38,748 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [805545250] [2020-08-19 00:54:38,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:54:38,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 00:54:38,749 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459713821] [2020-08-19 00:54:38,751 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 00:54:38,752 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:54:38,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 00:54:38,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 00:54:38,752 INFO L87 Difference]: Start difference. First operand 129 states and 153 transitions. Second operand 4 states. [2020-08-19 00:54:39,158 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:54:39,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:54:39,954 INFO L93 Difference]: Finished difference Result 228 states and 280 transitions. [2020-08-19 00:54:39,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 00:54:39,955 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-19 00:54:39,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:54:39,959 INFO L225 Difference]: With dead ends: 228 [2020-08-19 00:54:39,959 INFO L226 Difference]: Without dead ends: 147 [2020-08-19 00:54:39,962 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-19 00:54:39,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-08-19 00:54:40,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 120. [2020-08-19 00:54:40,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-08-19 00:54:40,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 141 transitions. [2020-08-19 00:54:40,018 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 141 transitions. Word has length 47 [2020-08-19 00:54:40,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:54:40,018 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 141 transitions. [2020-08-19 00:54:40,019 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 00:54:40,019 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 141 transitions. [2020-08-19 00:54:40,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-19 00:54:40,025 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:54:40,026 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] [2020-08-19 00:54:40,026 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 00:54:40,026 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:54:40,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:54:40,027 INFO L82 PathProgramCache]: Analyzing trace with hash -1339561462, now seen corresponding path program 1 times [2020-08-19 00:54:40,027 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:54:40,027 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [549709112] [2020-08-19 00:54:40,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:54:40,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:54:40,401 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:54:40,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:54:40,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:54:40,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:54:40,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:54:40,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:54:40,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:54:40,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:54:40,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:54:40,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:54:40,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:54:40,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 00:54:40,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:54:40,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 00:54:40,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:54:40,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:54:40,509 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [549709112] [2020-08-19 00:54:40,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:54:40,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 00:54:40,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688075994] [2020-08-19 00:54:40,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 00:54:40,512 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:54:40,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 00:54:40,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 00:54:40,513 INFO L87 Difference]: Start difference. First operand 120 states and 141 transitions. Second operand 8 states. [2020-08-19 00:54:40,908 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:54:41,231 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:54:41,511 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:54:41,751 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:54:42,466 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:54:44,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:54:44,140 INFO L93 Difference]: Finished difference Result 412 states and 515 transitions. [2020-08-19 00:54:44,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 00:54:44,141 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-19 00:54:44,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:54:44,145 INFO L225 Difference]: With dead ends: 412 [2020-08-19 00:54:44,146 INFO L226 Difference]: Without dead ends: 316 [2020-08-19 00:54:44,147 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 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 00:54:44,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2020-08-19 00:54:44,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 258. [2020-08-19 00:54:44,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-08-19 00:54:44,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 314 transitions. [2020-08-19 00:54:44,212 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 314 transitions. Word has length 51 [2020-08-19 00:54:44,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:54:44,213 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 314 transitions. [2020-08-19 00:54:44,213 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 00:54:44,213 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 314 transitions. [2020-08-19 00:54:44,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-19 00:54:44,215 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:54:44,215 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:54:44,216 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 00:54:44,216 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:54:44,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:54:44,216 INFO L82 PathProgramCache]: Analyzing trace with hash 857479477, now seen corresponding path program 1 times [2020-08-19 00:54:44,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:54:44,217 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [653818223] [2020-08-19 00:54:44,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:54:44,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:54:44,513 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:54:44,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:54:44,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:54:44,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:54:44,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:54:44,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:54:44,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:54:44,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:54:44,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:54:44,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:54:44,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:54:44,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 00:54:44,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:54:44,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 00:54:44,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:54:44,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-19 00:54:44,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:54:44,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:54:44,590 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [653818223] [2020-08-19 00:54:44,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:54:44,590 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 00:54:44,591 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275493235] [2020-08-19 00:54:44,591 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 00:54:44,591 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:54:44,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 00:54:44,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 00:54:44,592 INFO L87 Difference]: Start difference. First operand 258 states and 314 transitions. Second operand 8 states. [2020-08-19 00:54:44,969 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:54:45,829 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:54:46,221 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:54:46,521 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:54:46,808 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:54:47,226 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:54:48,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:54:48,154 INFO L93 Difference]: Finished difference Result 832 states and 1087 transitions. [2020-08-19 00:54:48,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 00:54:48,155 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-19 00:54:48,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:54:48,162 INFO L225 Difference]: With dead ends: 832 [2020-08-19 00:54:48,162 INFO L226 Difference]: Without dead ends: 598 [2020-08-19 00:54:48,165 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-19 00:54:48,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2020-08-19 00:54:48,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 471. [2020-08-19 00:54:48,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 471 states. [2020-08-19 00:54:48,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 578 transitions. [2020-08-19 00:54:48,287 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 578 transitions. Word has length 57 [2020-08-19 00:54:48,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:54:48,288 INFO L479 AbstractCegarLoop]: Abstraction has 471 states and 578 transitions. [2020-08-19 00:54:48,288 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 00:54:48,288 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 578 transitions. [2020-08-19 00:54:48,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-19 00:54:48,291 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:54:48,291 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] [2020-08-19 00:54:48,292 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 00:54:48,292 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:54:48,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:54:48,292 INFO L82 PathProgramCache]: Analyzing trace with hash -690329863, now seen corresponding path program 1 times [2020-08-19 00:54:48,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:54:48,293 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [717719793] [2020-08-19 00:54:48,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:54:48,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:54:48,595 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:54:48,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:54:48,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:54:48,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:54:48,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:54:48,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:54:48,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:54:48,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:54:48,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:54:48,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:54:48,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:54:48,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 00:54:48,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:54:48,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 00:54:48,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:54:48,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 00:54:48,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:54:48,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-19 00:54:48,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:54:48,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:54:48,715 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [717719793] [2020-08-19 00:54:48,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:54:48,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 00:54:48,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180576155] [2020-08-19 00:54:48,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 00:54:48,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:54:48,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 00:54:48,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 00:54:48,717 INFO L87 Difference]: Start difference. First operand 471 states and 578 transitions. Second operand 9 states. [2020-08-19 00:54:49,184 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:54:50,136 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:54:50,427 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:54:50,691 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:54:51,300 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:54:51,591 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:54:52,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:54:52,595 INFO L93 Difference]: Finished difference Result 1331 states and 1800 transitions. [2020-08-19 00:54:52,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 00:54:52,596 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 61 [2020-08-19 00:54:52,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:54:52,604 INFO L225 Difference]: With dead ends: 1331 [2020-08-19 00:54:52,604 INFO L226 Difference]: Without dead ends: 884 [2020-08-19 00:54:52,607 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-19 00:54:52,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 884 states. [2020-08-19 00:54:52,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 884 to 703. [2020-08-19 00:54:52,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 703 states. [2020-08-19 00:54:52,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 871 transitions. [2020-08-19 00:54:52,740 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 871 transitions. Word has length 61 [2020-08-19 00:54:52,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:54:52,740 INFO L479 AbstractCegarLoop]: Abstraction has 703 states and 871 transitions. [2020-08-19 00:54:52,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 00:54:52,740 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 871 transitions. [2020-08-19 00:54:52,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-19 00:54:52,743 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:54:52,743 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] [2020-08-19 00:54:52,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 00:54:52,744 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:54:52,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:54:52,744 INFO L82 PathProgramCache]: Analyzing trace with hash 1573489665, now seen corresponding path program 1 times [2020-08-19 00:54:52,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:54:52,745 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1641320044] [2020-08-19 00:54:52,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:54:52,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:54:53,051 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:54:53,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:54:53,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:54:53,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:54:53,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:54:53,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:54:53,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:54:53,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:54:53,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:54:53,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:54:53,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:54:53,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 00:54:53,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:54:53,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 00:54:53,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:54:53,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:54:53,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:54:53,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:54:53,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:54:53,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:54:53,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:54:53,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:54:53,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:54:53,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-19 00:54:53,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:54:53,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-19 00:54:53,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:54:53,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:54:53,229 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1641320044] [2020-08-19 00:54:53,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:54:53,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 00:54:53,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013391175] [2020-08-19 00:54:53,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 00:54:53,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:54:53,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 00:54:53,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 00:54:53,232 INFO L87 Difference]: Start difference. First operand 703 states and 871 transitions. Second operand 9 states. [2020-08-19 00:54:53,688 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:54:54,680 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:54:54,933 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:54:55,227 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:54:55,481 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:54:57,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:54:57,359 INFO L93 Difference]: Finished difference Result 2338 states and 3323 transitions. [2020-08-19 00:54:57,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 00:54:57,360 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 83 [2020-08-19 00:54:57,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:54:57,378 INFO L225 Difference]: With dead ends: 2338 [2020-08-19 00:54:57,378 INFO L226 Difference]: Without dead ends: 1659 [2020-08-19 00:54:57,382 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-08-19 00:54:57,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1659 states. [2020-08-19 00:54:57,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1659 to 1259. [2020-08-19 00:54:57,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1259 states. [2020-08-19 00:54:57,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1259 states to 1259 states and 1546 transitions. [2020-08-19 00:54:57,658 INFO L78 Accepts]: Start accepts. Automaton has 1259 states and 1546 transitions. Word has length 83 [2020-08-19 00:54:57,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:54:57,659 INFO L479 AbstractCegarLoop]: Abstraction has 1259 states and 1546 transitions. [2020-08-19 00:54:57,659 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 00:54:57,660 INFO L276 IsEmpty]: Start isEmpty. Operand 1259 states and 1546 transitions. [2020-08-19 00:54:57,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-19 00:54:57,667 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:54:57,667 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] [2020-08-19 00:54:57,668 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 00:54:57,668 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:54:57,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:54:57,668 INFO L82 PathProgramCache]: Analyzing trace with hash 547997666, now seen corresponding path program 1 times [2020-08-19 00:54:57,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:54:57,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [142389274] [2020-08-19 00:54:57,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:54:57,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:54:57,938 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:54:57,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:54:57,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:54:57,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:54:57,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:54:57,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:54:57,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:54:57,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:54:57,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:54:57,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:54:57,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:54:57,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 00:54:57,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:54:57,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 00:54:57,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:54:57,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:54:57,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:54:58,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:54:58,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:54:58,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:54:58,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:54:58,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:54:58,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:54:58,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-19 00:54:58,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:54:58,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-19 00:54:58,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:54:58,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:54:58,082 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [142389274] [2020-08-19 00:54:58,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:54:58,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 00:54:58,083 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585970041] [2020-08-19 00:54:58,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 00:54:58,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:54:58,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 00:54:58,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 00:54:58,084 INFO L87 Difference]: Start difference. First operand 1259 states and 1546 transitions. Second operand 9 states. [2020-08-19 00:54:59,123 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:54:59,366 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:54:59,623 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:54:59,874 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:55:00,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:55:00,983 INFO L93 Difference]: Finished difference Result 2894 states and 3849 transitions. [2020-08-19 00:55:00,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 00:55:00,986 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 83 [2020-08-19 00:55:00,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:55:01,004 INFO L225 Difference]: With dead ends: 2894 [2020-08-19 00:55:01,005 INFO L226 Difference]: Without dead ends: 1659 [2020-08-19 00:55:01,012 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-19 00:55:01,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1659 states. [2020-08-19 00:55:01,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1659 to 1299. [2020-08-19 00:55:01,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1299 states. [2020-08-19 00:55:01,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1299 states to 1299 states and 1586 transitions. [2020-08-19 00:55:01,385 INFO L78 Accepts]: Start accepts. Automaton has 1299 states and 1586 transitions. Word has length 83 [2020-08-19 00:55:01,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:55:01,386 INFO L479 AbstractCegarLoop]: Abstraction has 1299 states and 1586 transitions. [2020-08-19 00:55:01,387 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 00:55:01,387 INFO L276 IsEmpty]: Start isEmpty. Operand 1299 states and 1586 transitions. [2020-08-19 00:55:01,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-19 00:55:01,391 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:55:01,391 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] [2020-08-19 00:55:01,392 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 00:55:01,392 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:55:01,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:55:01,393 INFO L82 PathProgramCache]: Analyzing trace with hash 570629920, now seen corresponding path program 1 times [2020-08-19 00:55:01,393 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:55:01,393 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1000442588] [2020-08-19 00:55:01,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:55:01,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:01,748 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:55:01,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:55:01,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:01,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:55:01,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:01,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:55:01,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:01,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:55:01,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:01,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:55:01,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:01,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 00:55:01,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:01,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 00:55:01,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:01,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:55:01,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:01,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:55:01,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:01,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:55:01,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:01,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:55:01,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:01,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-19 00:55:01,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:01,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-19 00:55:01,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:55:01,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:55:01,933 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1000442588] [2020-08-19 00:55:01,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:55:01,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-19 00:55:01,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942840532] [2020-08-19 00:55:01,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 00:55:01,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:55:01,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 00:55:01,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-19 00:55:01,935 INFO L87 Difference]: Start difference. First operand 1299 states and 1586 transitions. Second operand 11 states. [2020-08-19 00:55:02,499 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:55:02,733 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:55:02,950 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:55:03,654 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:55:03,909 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:55:04,138 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:55:05,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:55:05,331 INFO L93 Difference]: Finished difference Result 2592 states and 3413 transitions. [2020-08-19 00:55:05,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 00:55:05,331 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 83 [2020-08-19 00:55:05,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:55:05,342 INFO L225 Difference]: With dead ends: 2592 [2020-08-19 00:55:05,342 INFO L226 Difference]: Without dead ends: 1317 [2020-08-19 00:55:05,347 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-19 00:55:05,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1317 states. [2020-08-19 00:55:05,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1317 to 1073. [2020-08-19 00:55:05,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1073 states. [2020-08-19 00:55:05,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1073 states to 1073 states and 1282 transitions. [2020-08-19 00:55:05,627 INFO L78 Accepts]: Start accepts. Automaton has 1073 states and 1282 transitions. Word has length 83 [2020-08-19 00:55:05,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:55:05,627 INFO L479 AbstractCegarLoop]: Abstraction has 1073 states and 1282 transitions. [2020-08-19 00:55:05,627 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 00:55:05,628 INFO L276 IsEmpty]: Start isEmpty. Operand 1073 states and 1282 transitions. [2020-08-19 00:55:05,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-08-19 00:55:05,631 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:55:05,632 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] [2020-08-19 00:55:05,632 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 00:55:05,632 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:55:05,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:55:05,633 INFO L82 PathProgramCache]: Analyzing trace with hash 1146127589, now seen corresponding path program 1 times [2020-08-19 00:55:05,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:55:05,633 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1776912704] [2020-08-19 00:55:05,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:55:05,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 00:55:05,710 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 00:55:05,710 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 00:55:05,717 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 00:55:05,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 12:55:05 BoogieIcfgContainer [2020-08-19 00:55:05,764 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 00:55:05,766 INFO L168 Benchmark]: Toolchain (without parser) took 31583.51 ms. Allocated memory was 140.0 MB in the beginning and 675.3 MB in the end (delta: 535.3 MB). Free memory was 101.4 MB in the beginning and 221.3 MB in the end (delta: -119.9 MB). Peak memory consumption was 415.4 MB. Max. memory is 7.1 GB. [2020-08-19 00:55:05,767 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-19 00:55:05,770 INFO L168 Benchmark]: CACSL2BoogieTranslator took 623.07 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 101.2 MB in the beginning and 169.7 MB in the end (delta: -68.5 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. [2020-08-19 00:55:05,778 INFO L168 Benchmark]: Boogie Preprocessor took 91.05 ms. Allocated memory is still 203.4 MB. Free memory was 169.7 MB in the beginning and 165.0 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB. [2020-08-19 00:55:05,779 INFO L168 Benchmark]: RCFGBuilder took 1108.69 ms. Allocated memory was 203.4 MB in the beginning and 237.0 MB in the end (delta: 33.6 MB). Free memory was 165.0 MB in the beginning and 194.7 MB in the end (delta: -29.7 MB). Peak memory consumption was 81.2 MB. Max. memory is 7.1 GB. [2020-08-19 00:55:05,780 INFO L168 Benchmark]: TraceAbstraction took 29755.86 ms. Allocated memory was 237.0 MB in the beginning and 675.3 MB in the end (delta: 438.3 MB). Free memory was 194.7 MB in the beginning and 221.3 MB in the end (delta: -26.6 MB). Peak memory consumption was 411.7 MB. Max. memory is 7.1 GB. [2020-08-19 00:55:05,791 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 623.07 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 101.2 MB in the beginning and 169.7 MB in the end (delta: -68.5 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 91.05 ms. Allocated memory is still 203.4 MB. Free memory was 169.7 MB in the beginning and 165.0 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1108.69 ms. Allocated memory was 203.4 MB in the beginning and 237.0 MB in the end (delta: 33.6 MB). Free memory was 165.0 MB in the beginning and 194.7 MB in the end (delta: -29.7 MB). Peak memory consumption was 81.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 29755.86 ms. Allocated memory was 237.0 MB in the beginning and 675.3 MB in the end (delta: 438.3 MB). Free memory was 194.7 MB in the beginning and 221.3 MB in the end (delta: -26.6 MB). Peak memory consumption was 411.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 439]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L209] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L450] int waterLevel = 1; [L451] int methaneLevelCritical = 0; [L617] int pumpRunning = 0; [L618] int systemActive = 1; [L848] int cleanupTimeShifts = 4; [L921] int retValue_acc ; [L922] int tmp ; [L926] FCALL select_helpers() [L927] FCALL select_features() [L928] CALL, EXPR valid_product() [L839] int retValue_acc ; [L842] retValue_acc = 1 [L843] return (retValue_acc); [L928] RET, EXPR valid_product() [L928] tmp = valid_product() [L930] COND TRUE \read(tmp) [L932] FCALL setup() [L933] CALL runTest() [L915] CALL test() [L548] int splverifierCounter ; [L549] int tmp ; [L550] int tmp___0 ; [L551] int tmp___1 ; [L552] int tmp___2 ; [L555] splverifierCounter = 0 [L557] COND TRUE 1 [L559] COND TRUE splverifierCounter < 4 [L565] tmp = __VERIFIER_nondet_int() [L567] COND TRUE \read(tmp) [L569] CALL waterRise() [L468] COND TRUE waterLevel < 2 [L469] waterLevel = waterLevel + 1 [L569] RET waterRise() [L575] tmp___0 = __VERIFIER_nondet_int() [L577] COND TRUE \read(tmp___0) [L579] CALL changeMethaneLevel() [L480] COND FALSE !(\read(methaneLevelCritical)) [L483] methaneLevelCritical = 1 [L579] RET changeMethaneLevel() [L585] tmp___2 = __VERIFIER_nondet_int() [L587] COND TRUE \read(tmp___2) [L602] CALL timeShift() [L624] COND FALSE !(\read(pumpRunning)) [L631] COND TRUE \read(systemActive) [L633] CALL processEnvironment() [L679] int tmp ; [L682] COND FALSE !(\read(pumpRunning)) [L697] CALL processEnvironment__wrappee__highWaterSensor() [L653] int tmp ; [L656] COND TRUE ! pumpRunning [L658] CALL, EXPR isHighWaterLevel() [L776] int retValue_acc ; [L777] int tmp ; [L778] int tmp___0 ; [L782] CALL, EXPR isHighWaterSensorDry() [L530] int retValue_acc ; [L533] COND FALSE !(waterLevel < 2) [L537] retValue_acc = 0 [L538] return (retValue_acc); [L782] RET, EXPR isHighWaterSensorDry() [L782] tmp = isHighWaterSensorDry() [L784] COND FALSE !(\read(tmp)) [L787] tmp___0 = 1 [L789] retValue_acc = tmp___0 [L790] return (retValue_acc); [L658] RET, EXPR isHighWaterLevel() [L658] tmp = isHighWaterLevel() [L660] COND TRUE \read(tmp) [L662] CALL activatePump() [L707] pumpRunning = 1 [L662] RET activatePump() [L697] RET processEnvironment__wrappee__highWaterSensor() [L633] RET processEnvironment() [L639] CALL __utac_acc__Specification1_spec__1() [L410] int tmp ; [L411] int tmp___0 ; [L415] CALL, EXPR isMethaneLevelCritical() [L489] int retValue_acc ; [L492] retValue_acc = methaneLevelCritical [L493] return (retValue_acc); [L415] RET, EXPR isMethaneLevelCritical() [L415] tmp = isMethaneLevelCritical() [L417] COND TRUE \read(tmp) [L419] CALL, EXPR isPumpRunning() [L731] int retValue_acc ; [L734] retValue_acc = pumpRunning [L735] return (retValue_acc); [L419] RET, EXPR isPumpRunning() [L419] tmp___0 = isPumpRunning() [L421] COND TRUE \read(tmp___0) [L423] CALL __automaton_fail() [L439] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 231 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 29.6s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 24.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 906 SDtfs, 1603 SDslu, 1167 SDs, 0 SdLazy, 5299 SolverSat, 1017 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 12.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 269 GetRequests, 179 SyntacticMatches, 1 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 9.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1299occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.3s AutomataMinimizationTime, 8 MinimizatonAttempts, 1431 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 598 NumberOfCodeBlocks, 598 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 503 ConstructedInterpolants, 0 QuantifiedInterpolants, 147464 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...