/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product64.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 06:39:18,933 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 06:39:18,936 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 06:39:18,960 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 06:39:18,960 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 06:39:18,961 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 06:39:18,963 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 06:39:18,964 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 06:39:18,966 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 06:39:18,967 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 06:39:18,968 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 06:39:18,969 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 06:39:18,969 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 06:39:18,970 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 06:39:18,971 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 06:39:18,972 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 06:39:18,973 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 06:39:18,974 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 06:39:18,976 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 06:39:18,978 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 06:39:18,979 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 06:39:18,980 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 06:39:18,981 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 06:39:18,982 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 06:39:18,984 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 06:39:18,985 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 06:39:18,985 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 06:39:18,986 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 06:39:18,986 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 06:39:18,987 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 06:39:18,987 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 06:39:18,988 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 06:39:18,989 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 06:39:18,989 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 06:39:18,990 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 06:39:18,991 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 06:39:18,991 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 06:39:18,992 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 06:39:18,992 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 06:39:18,993 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 06:39:18,993 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 06:39:18,994 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 06:39:19,043 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 06:39:19,043 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 06:39:19,045 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 06:39:19,045 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 06:39:19,046 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 06:39:19,047 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 06:39:19,047 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 06:39:19,047 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 06:39:19,047 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 06:39:19,047 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 06:39:19,048 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 06:39:19,048 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 06:39:19,048 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 06:39:19,048 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 06:39:19,048 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 06:39:19,048 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 06:39:19,049 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 06:39:19,050 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 06:39:19,050 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 06:39:19,051 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 06:39:19,051 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 06:39:19,051 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 06:39:19,051 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 06:39:19,052 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 06:39:19,052 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 06:39:19,052 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 06:39:19,052 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 06:39:19,052 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 06:39:19,052 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 06:39:19,053 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5; [2020-08-19 06:39:19,376 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 06:39:19,389 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 06:39:19,392 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 06:39:19,394 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 06:39:19,394 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 06:39:19,395 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product64.cil.c [2020-08-19 06:39:19,451 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6c6aa8f1f/17846854ec6e4c34a886c4759e7d8159/FLAG3e2b3d236 [2020-08-19 06:39:20,043 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 06:39:20,044 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product64.cil.c [2020-08-19 06:39:20,056 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6c6aa8f1f/17846854ec6e4c34a886c4759e7d8159/FLAG3e2b3d236 [2020-08-19 06:39:20,332 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6c6aa8f1f/17846854ec6e4c34a886c4759e7d8159 [2020-08-19 06:39:20,341 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 06:39:20,343 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 06:39:20,344 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 06:39:20,344 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 06:39:20,348 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 06:39:20,349 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 06:39:20" (1/1) ... [2020-08-19 06:39:20,352 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73af11df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:39:20, skipping insertion in model container [2020-08-19 06:39:20,352 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 06:39:20" (1/1) ... [2020-08-19 06:39:20,360 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 06:39:20,403 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 06:39:20,828 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 06:39:20,841 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 06:39:20,950 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 06:39:21,005 INFO L208 MainTranslator]: Completed translation [2020-08-19 06:39:21,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:39:21 WrapperNode [2020-08-19 06:39:21,006 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 06:39:21,006 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 06:39:21,006 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 06:39:21,007 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 06:39:21,021 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:39:21" (1/1) ... [2020-08-19 06:39:21,021 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:39:21" (1/1) ... [2020-08-19 06:39:21,042 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:39:21" (1/1) ... [2020-08-19 06:39:21,042 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:39:21" (1/1) ... [2020-08-19 06:39:21,072 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:39:21" (1/1) ... [2020-08-19 06:39:21,083 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:39:21" (1/1) ... [2020-08-19 06:39:21,089 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:39:21" (1/1) ... [2020-08-19 06:39:21,097 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 06:39:21,097 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 06:39:21,097 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 06:39:21,098 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 06:39:21,098 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:39:21" (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 06:39:21,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 06:39:21,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 06:39:21,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 06:39:21,179 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 06:39:21,179 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 06:39:21,179 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 06:39:21,180 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 06:39:21,180 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 06:39:21,180 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 06:39:21,181 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 06:39:21,181 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-19 06:39:21,181 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 06:39:21,181 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-19 06:39:21,181 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 06:39:21,182 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 06:39:21,183 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 06:39:21,183 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 06:39:21,183 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 06:39:21,183 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 06:39:21,184 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-19 06:39:21,184 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-19 06:39:21,184 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-19 06:39:21,184 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 06:39:21,184 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 06:39:21,184 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 06:39:21,185 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 06:39:21,186 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 06:39:21,186 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 06:39:21,186 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 06:39:21,186 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 06:39:21,186 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-19 06:39:21,187 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 06:39:21,187 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 06:39:21,187 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 06:39:21,187 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 06:39:21,187 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 06:39:21,188 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 06:39:21,188 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 06:39:21,188 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 06:39:21,188 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 06:39:21,188 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 06:39:21,188 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 06:39:21,188 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 06:39:21,189 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-19 06:39:21,189 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 06:39:21,189 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 06:39:21,189 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 06:39:21,189 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 06:39:21,189 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 06:39:21,189 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 06:39:21,190 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 06:39:21,190 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 06:39:21,190 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 06:39:21,190 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 06:39:21,191 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 06:39:21,191 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-19 06:39:21,191 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 06:39:21,191 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 06:39:21,192 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 06:39:21,192 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 06:39:21,192 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 06:39:21,192 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-19 06:39:21,192 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-19 06:39:21,192 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-19 06:39:21,192 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 06:39:21,193 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 06:39:21,193 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 06:39:21,193 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 06:39:21,193 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-19 06:39:21,193 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-19 06:39:21,193 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 06:39:21,194 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-19 06:39:21,194 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 06:39:21,195 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 06:39:21,195 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 06:39:21,196 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 06:39:21,196 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 06:39:21,196 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 06:39:21,197 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 06:39:21,197 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 06:39:21,197 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 06:39:21,197 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 06:39:21,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 06:39:21,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 06:39:21,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 06:39:21,198 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 06:39:21,199 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 06:39:21,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 06:39:21,199 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 06:39:21,199 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 06:39:21,199 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 06:39:21,199 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 06:39:21,199 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 06:39:21,200 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 06:39:21,200 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 06:39:21,200 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 06:39:21,200 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 06:39:21,200 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 06:39:21,200 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 06:39:21,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 06:39:21,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 06:39:21,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 06:39:22,363 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 06:39:22,363 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 06:39:22,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 06:39:22 BoogieIcfgContainer [2020-08-19 06:39:22,377 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 06:39:22,380 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 06:39:22,380 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 06:39:22,383 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 06:39:22,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 06:39:20" (1/3) ... [2020-08-19 06:39:22,385 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44258d4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 06:39:22, skipping insertion in model container [2020-08-19 06:39:22,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:39:21" (2/3) ... [2020-08-19 06:39:22,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44258d4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 06:39:22, skipping insertion in model container [2020-08-19 06:39:22,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 06:39:22" (3/3) ... [2020-08-19 06:39:22,388 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product64.cil.c [2020-08-19 06:39:22,398 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 06:39:22,408 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 06:39:22,420 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 06:39:22,444 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 06:39:22,444 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 06:39:22,444 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 06:39:22,445 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 06:39:22,445 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 06:39:22,445 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 06:39:22,445 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 06:39:22,445 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 06:39:22,467 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states. [2020-08-19 06:39:22,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-19 06:39:22,478 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:39:22,479 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:39:22,480 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:39:22,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:39:22,489 INFO L82 PathProgramCache]: Analyzing trace with hash 1153750625, now seen corresponding path program 1 times [2020-08-19 06:39:22,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:39:22,497 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1581135206] [2020-08-19 06:39:22,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:39:22,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:23,218 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 06:39:23,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:39:23,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:23,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:39:23,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:23,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:39:23,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:23,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:39:23,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:23,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:39:23,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:23,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 06:39:23,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:23,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 06:39:23,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:23,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 06:39:23,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:23,299 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 06:39:23,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1581135206] [2020-08-19 06:39:23,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:39:23,303 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 06:39:23,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406364413] [2020-08-19 06:39:23,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 06:39:23,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:39:23,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 06:39:23,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 06:39:23,330 INFO L87 Difference]: Start difference. First operand 209 states. Second operand 3 states. [2020-08-19 06:39:24,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:39:24,741 INFO L93 Difference]: Finished difference Result 380 states and 494 transitions. [2020-08-19 06:39:24,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 06:39:24,743 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-19 06:39:24,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:39:24,759 INFO L225 Difference]: With dead ends: 380 [2020-08-19 06:39:24,759 INFO L226 Difference]: Without dead ends: 205 [2020-08-19 06:39:24,765 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 06:39:24,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-08-19 06:39:24,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 166. [2020-08-19 06:39:24,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-08-19 06:39:24,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 198 transitions. [2020-08-19 06:39:24,866 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 198 transitions. Word has length 52 [2020-08-19 06:39:24,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:39:24,867 INFO L479 AbstractCegarLoop]: Abstraction has 166 states and 198 transitions. [2020-08-19 06:39:24,867 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 06:39:24,867 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 198 transitions. [2020-08-19 06:39:24,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-19 06:39:24,872 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:39:24,872 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:39:24,872 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 06:39:24,872 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:39:24,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:39:24,873 INFO L82 PathProgramCache]: Analyzing trace with hash -2119837363, now seen corresponding path program 1 times [2020-08-19 06:39:24,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:39:24,873 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2031714929] [2020-08-19 06:39:24,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:39:24,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:25,191 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 06:39:25,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:39:25,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:25,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:39:25,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:25,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:39:25,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:25,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:39:25,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:25,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:39:25,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:25,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 06:39:25,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:25,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 06:39:25,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:25,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 06:39:25,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:25,238 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 06:39:25,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2031714929] [2020-08-19 06:39:25,239 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:39:25,239 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 06:39:25,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711193813] [2020-08-19 06:39:25,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 06:39:25,241 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:39:25,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 06:39:25,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 06:39:25,242 INFO L87 Difference]: Start difference. First operand 166 states and 198 transitions. Second operand 4 states. [2020-08-19 06:39:25,708 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:39:26,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:39:26,758 INFO L93 Difference]: Finished difference Result 303 states and 373 transitions. [2020-08-19 06:39:26,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 06:39:26,759 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-19 06:39:26,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:39:26,764 INFO L225 Difference]: With dead ends: 303 [2020-08-19 06:39:26,764 INFO L226 Difference]: Without dead ends: 189 [2020-08-19 06:39:26,766 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-19 06:39:26,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-08-19 06:39:26,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 157. [2020-08-19 06:39:26,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-08-19 06:39:26,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 186 transitions. [2020-08-19 06:39:26,827 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 186 transitions. Word has length 53 [2020-08-19 06:39:26,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:39:26,827 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 186 transitions. [2020-08-19 06:39:26,827 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 06:39:26,828 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 186 transitions. [2020-08-19 06:39:26,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-19 06:39:26,830 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:39:26,831 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] [2020-08-19 06:39:26,831 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 06:39:26,831 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:39:26,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:39:26,831 INFO L82 PathProgramCache]: Analyzing trace with hash -1174645714, now seen corresponding path program 1 times [2020-08-19 06:39:26,832 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:39:26,832 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1629549658] [2020-08-19 06:39:26,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:39:26,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:27,177 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 06:39:27,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:39:27,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:27,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:39:27,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:27,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:39:27,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:27,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:39:27,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:27,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:39:27,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:27,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 06:39:27,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:27,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 06:39:27,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:27,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 06:39:27,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:27,285 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 06:39:27,285 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1629549658] [2020-08-19 06:39:27,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:39:27,286 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 06:39:27,286 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992911941] [2020-08-19 06:39:27,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 06:39:27,296 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:39:27,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 06:39:27,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 06:39:27,297 INFO L87 Difference]: Start difference. First operand 157 states and 186 transitions. Second operand 8 states. [2020-08-19 06:39:27,695 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 06:39:27,995 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 06:39:28,251 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 06:39:28,479 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 06:39:29,204 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:39:31,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:39:31,645 INFO L93 Difference]: Finished difference Result 540 states and 672 transitions. [2020-08-19 06:39:31,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 06:39:31,645 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-08-19 06:39:31,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:39:31,651 INFO L225 Difference]: With dead ends: 540 [2020-08-19 06:39:31,651 INFO L226 Difference]: Without dead ends: 407 [2020-08-19 06:39:31,652 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-19 06:39:31,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2020-08-19 06:39:31,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 334. [2020-08-19 06:39:31,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 334 states. [2020-08-19 06:39:31,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 407 transitions. [2020-08-19 06:39:31,748 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 407 transitions. Word has length 58 [2020-08-19 06:39:31,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:39:31,749 INFO L479 AbstractCegarLoop]: Abstraction has 334 states and 407 transitions. [2020-08-19 06:39:31,749 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 06:39:31,749 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 407 transitions. [2020-08-19 06:39:31,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-08-19 06:39:31,752 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:39:31,753 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:39:31,753 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 06:39:31,753 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:39:31,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:39:31,754 INFO L82 PathProgramCache]: Analyzing trace with hash 1545438199, now seen corresponding path program 1 times [2020-08-19 06:39:31,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:39:31,754 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [235116631] [2020-08-19 06:39:31,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:39:31,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:32,063 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 06:39:32,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:39:32,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:32,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:39:32,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:32,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:39:32,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:32,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:39:32,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:32,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:39:32,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:32,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 06:39:32,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:32,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 06:39:32,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:32,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-19 06:39:32,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:32,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-19 06:39:32,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:39:32,139 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 06:39:32,140 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [235116631] [2020-08-19 06:39:32,140 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:39:32,140 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 06:39:32,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044192449] [2020-08-19 06:39:32,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 06:39:32,141 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:39:32,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 06:39:32,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 06:39:32,142 INFO L87 Difference]: Start difference. First operand 334 states and 407 transitions. Second operand 8 states. [2020-08-19 06:39:32,548 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 06:39:33,951 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 06:39:34,355 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 06:39:34,678 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 06:39:34,996 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 06:39:36,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:39:36,287 INFO L93 Difference]: Finished difference Result 1041 states and 1365 transitions. [2020-08-19 06:39:36,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-19 06:39:36,288 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-08-19 06:39:36,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:39:36,294 INFO L225 Difference]: With dead ends: 1041 [2020-08-19 06:39:36,295 INFO L226 Difference]: Without dead ends: 731 [2020-08-19 06:39:36,297 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-19 06:39:36,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2020-08-19 06:39:36,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 653. [2020-08-19 06:39:36,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 653 states. [2020-08-19 06:39:36,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 809 transitions. [2020-08-19 06:39:36,472 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 809 transitions. Word has length 63 [2020-08-19 06:39:36,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:39:36,472 INFO L479 AbstractCegarLoop]: Abstraction has 653 states and 809 transitions. [2020-08-19 06:39:36,473 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 06:39:36,473 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 809 transitions. [2020-08-19 06:39:36,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-19 06:39:36,476 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:39:36,476 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:39:36,477 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 06:39:36,477 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:39:36,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:39:36,477 INFO L82 PathProgramCache]: Analyzing trace with hash -1461698211, now seen corresponding path program 1 times [2020-08-19 06:39:36,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:39:36,478 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [903786968] [2020-08-19 06:39:36,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:39:36,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 06:39:36,533 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 06:39:36,533 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 06:39:36,537 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 06:39:36,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 06:39:36 BoogieIcfgContainer [2020-08-19 06:39:36,558 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 06:39:36,560 INFO L168 Benchmark]: Toolchain (without parser) took 16217.21 ms. Allocated memory was 141.0 MB in the beginning and 520.1 MB in the end (delta: 379.1 MB). Free memory was 102.8 MB in the beginning and 445.0 MB in the end (delta: -342.2 MB). Peak memory consumption was 36.9 MB. Max. memory is 7.1 GB. [2020-08-19 06:39:36,561 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-19 06:39:36,562 INFO L168 Benchmark]: CACSL2BoogieTranslator took 662.20 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 102.6 MB in the beginning and 168.6 MB in the end (delta: -66.0 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. [2020-08-19 06:39:36,563 INFO L168 Benchmark]: Boogie Preprocessor took 90.73 ms. Allocated memory is still 203.9 MB. Free memory was 168.6 MB in the beginning and 164.7 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-08-19 06:39:36,563 INFO L168 Benchmark]: RCFGBuilder took 1279.44 ms. Allocated memory was 203.9 MB in the beginning and 233.8 MB in the end (delta: 29.9 MB). Free memory was 164.7 MB in the beginning and 183.8 MB in the end (delta: -19.1 MB). Peak memory consumption was 77.8 MB. Max. memory is 7.1 GB. [2020-08-19 06:39:36,564 INFO L168 Benchmark]: TraceAbstraction took 14178.15 ms. Allocated memory was 233.8 MB in the beginning and 520.1 MB in the end (delta: 286.3 MB). Free memory was 183.8 MB in the beginning and 445.0 MB in the end (delta: -261.2 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. [2020-08-19 06:39:36,568 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 662.20 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 102.6 MB in the beginning and 168.6 MB in the end (delta: -66.0 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 90.73 ms. Allocated memory is still 203.9 MB. Free memory was 168.6 MB in the beginning and 164.7 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1279.44 ms. Allocated memory was 203.9 MB in the beginning and 233.8 MB in the end (delta: 29.9 MB). Free memory was 164.7 MB in the beginning and 183.8 MB in the end (delta: -19.1 MB). Peak memory consumption was 77.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 14178.15 ms. Allocated memory was 233.8 MB in the beginning and 520.1 MB in the end (delta: 286.3 MB). Free memory was 183.8 MB in the beginning and 445.0 MB in the end (delta: -261.2 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 996]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L90] int pumpRunning = 0; [L91] int systemActive = 1; [L427] int waterLevel = 1; [L428] int methaneLevelCritical = 0; [L699] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L896] int cleanupTimeShifts = 4; [L969] int retValue_acc ; [L970] int tmp ; [L974] FCALL select_helpers() [L975] FCALL select_features() [L976] CALL, EXPR valid_product() [L69] int retValue_acc ; [L72] retValue_acc = 1 [L73] return (retValue_acc); [L976] RET, EXPR valid_product() [L976] tmp = valid_product() [L978] COND TRUE \read(tmp) [L980] FCALL setup() [L981] CALL runTest() [L963] CALL test() [L358] int splverifierCounter ; [L359] int tmp ; [L360] int tmp___0 ; [L361] int tmp___1 ; [L362] int tmp___2 ; [L365] splverifierCounter = 0 [L367] COND TRUE 1 [L369] COND TRUE splverifierCounter < 4 [L375] tmp = __VERIFIER_nondet_int() [L377] COND TRUE \read(tmp) [L379] CALL waterRise() [L445] COND TRUE waterLevel < 2 [L446] waterLevel = waterLevel + 1 [L379] RET waterRise() [L385] tmp___0 = __VERIFIER_nondet_int() [L387] COND FALSE !(\read(tmp___0)) [L395] tmp___2 = __VERIFIER_nondet_int() [L397] COND FALSE !(\read(tmp___2)) [L403] tmp___1 = __VERIFIER_nondet_int() [L405] COND TRUE \read(tmp___1) [L407] CALL stopSystem() [L334] COND FALSE !(\read(pumpRunning)) [L341] systemActive = 0 [L407] RET stopSystem() [L414] CALL timeShift() [L98] COND FALSE !(\read(pumpRunning)) [L105] COND FALSE !(\read(systemActive)) [L113] CALL __utac_acc__Specification3_spec__1() [L1002] int tmp ; [L1003] int tmp___0 ; [L1004] int tmp___1 ; [L1008] CALL, EXPR isMethaneLevelCritical() [L466] int retValue_acc ; [L469] retValue_acc = methaneLevelCritical [L470] return (retValue_acc); [L1008] RET, EXPR isMethaneLevelCritical() [L1008] tmp = isMethaneLevelCritical() [L1010] COND FALSE !(\read(tmp)) [L1014] CALL, EXPR getWaterLevel() [L498] int retValue_acc ; [L501] retValue_acc = waterLevel [L502] return (retValue_acc); [L1014] RET, EXPR getWaterLevel() [L1014] tmp___0 = getWaterLevel() [L1016] COND TRUE tmp___0 == 2 [L1018] CALL, EXPR isPumpRunning() [L248] int retValue_acc ; [L251] retValue_acc = pumpRunning [L252] return (retValue_acc); [L1018] RET, EXPR isPumpRunning() [L1018] tmp___1 = isPumpRunning() [L1020] COND FALSE !(\read(tmp___1)) [L1024] CALL __automaton_fail() [L996] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 44 procedures, 265 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 14.0s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 11.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 628 SDtfs, 1054 SDslu, 414 SDs, 0 SdLazy, 2428 SolverSat, 646 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 102 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=653occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 4 MinimizatonAttempts, 222 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 293 NumberOfCodeBlocks, 293 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 222 ConstructedInterpolants, 0 QuantifiedInterpolants, 62058 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...