/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks NOT_INCREMENTALLY -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product54.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 10:40:45,860 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 10:40:45,863 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 10:40:45,879 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 10:40:45,880 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 10:40:45,882 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 10:40:45,883 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 10:40:45,896 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 10:40:45,898 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 10:40:45,899 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 10:40:45,901 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 10:40:45,902 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 10:40:45,903 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 10:40:45,905 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 10:40:45,907 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 10:40:45,909 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 10:40:45,910 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 10:40:45,911 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 10:40:45,913 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 10:40:45,917 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 10:40:45,922 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 10:40:45,924 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 10:40:45,926 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 10:40:45,927 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 10:40:45,930 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 10:40:45,930 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 10:40:45,930 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 10:40:45,933 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 10:40:45,933 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 10:40:45,935 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-20 10:40:45,935 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 10:40:45,936 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 10:40:45,937 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 10:40:45,938 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 10:40:45,939 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 10:40:45,939 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 10:40:45,940 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 10:40:45,940 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 10:40:45,940 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 10:40:45,941 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 10:40:45,942 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 10:40:45,943 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 10:40:45,964 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 10:40:45,964 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 10:40:45,966 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 10:40:45,966 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 10:40:45,966 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 10:40:45,967 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 10:40:45,967 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 10:40:45,967 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 10:40:45,967 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 10:40:45,967 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 10:40:45,969 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 10:40:45,969 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 10:40:45,969 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 10:40:45,969 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 10:40:45,970 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 10:40:45,970 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 10:40:45,970 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 10:40:45,970 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 10:40:45,970 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 10:40:45,971 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 10:40:45,971 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 10:40:45,971 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 10:40:45,971 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 10:40:45,971 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 10:40:45,971 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 10:40:45,972 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 10:40:45,972 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:40:45,972 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 10:40:45,972 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 10:40:45,972 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 -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> NOT_INCREMENTALLY [2020-07-20 10:40:46,234 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 10:40:46,247 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 10:40:46,250 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 10:40:46,251 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 10:40:46,252 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 10:40:46,252 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product54.cil.c [2020-07-20 10:40:46,318 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d41d32de/c44aff57349d4be9b55dda924338a816/FLAGa782b017f [2020-07-20 10:40:46,818 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 10:40:46,819 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product54.cil.c [2020-07-20 10:40:46,832 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d41d32de/c44aff57349d4be9b55dda924338a816/FLAGa782b017f [2020-07-20 10:40:47,199 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d41d32de/c44aff57349d4be9b55dda924338a816 [2020-07-20 10:40:47,206 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 10:40:47,209 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 10:40:47,210 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 10:40:47,210 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 10:40:47,213 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 10:40:47,214 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:40:47" (1/1) ... [2020-07-20 10:40:47,217 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59c78abd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:40:47, skipping insertion in model container [2020-07-20 10:40:47,217 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:40:47" (1/1) ... [2020-07-20 10:40:47,224 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 10:40:47,275 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 10:40:47,739 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 10:40:47,750 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 10:40:47,851 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 10:40:47,903 INFO L208 MainTranslator]: Completed translation [2020-07-20 10:40:47,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:40:47 WrapperNode [2020-07-20 10:40:47,903 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 10:40:47,904 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 10:40:47,904 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 10:40:47,904 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 10:40:47,914 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:40:47" (1/1) ... [2020-07-20 10:40:47,914 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:40:47" (1/1) ... [2020-07-20 10:40:47,933 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:40:47" (1/1) ... [2020-07-20 10:40:47,933 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:40:47" (1/1) ... [2020-07-20 10:40:47,967 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:40:47" (1/1) ... [2020-07-20 10:40:47,978 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:40:47" (1/1) ... [2020-07-20 10:40:47,983 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:40:47" (1/1) ... [2020-07-20 10:40:47,990 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 10:40:47,991 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 10:40:47,991 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 10:40:47,991 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 10:40:47,992 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:40:47" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-07-20 10:40:48,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 10:40:48,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 10:40:48,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-07-20 10:40:48,061 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-07-20 10:40:48,061 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-07-20 10:40:48,062 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-07-20 10:40:48,062 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-07-20 10:40:48,062 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 10:40:48,063 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-07-20 10:40:48,063 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-07-20 10:40:48,063 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-07-20 10:40:48,063 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-07-20 10:40:48,064 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-07-20 10:40:48,064 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-07-20 10:40:48,064 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-07-20 10:40:48,065 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-07-20 10:40:48,065 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-07-20 10:40:48,065 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-07-20 10:40:48,066 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-07-20 10:40:48,066 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-07-20 10:40:48,066 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-07-20 10:40:48,066 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-07-20 10:40:48,067 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-07-20 10:40:48,067 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-07-20 10:40:48,067 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-07-20 10:40:48,068 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-07-20 10:40:48,068 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-07-20 10:40:48,068 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-07-20 10:40:48,068 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-07-20 10:40:48,068 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-07-20 10:40:48,068 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-07-20 10:40:48,068 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-07-20 10:40:48,069 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-07-20 10:40:48,069 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-07-20 10:40:48,069 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-07-20 10:40:48,069 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-07-20 10:40:48,069 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-07-20 10:40:48,069 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-07-20 10:40:48,069 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-07-20 10:40:48,070 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-07-20 10:40:48,070 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-07-20 10:40:48,070 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-07-20 10:40:48,070 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 10:40:48,070 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 10:40:48,070 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-07-20 10:40:48,070 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-07-20 10:40:48,071 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-07-20 10:40:48,071 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-07-20 10:40:48,071 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-07-20 10:40:48,071 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-07-20 10:40:48,071 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-07-20 10:40:48,071 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-07-20 10:40:48,072 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-07-20 10:40:48,072 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-07-20 10:40:48,072 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-07-20 10:40:48,072 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-07-20 10:40:48,073 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-07-20 10:40:48,073 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 10:40:48,073 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-07-20 10:40:48,074 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-07-20 10:40:48,074 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-07-20 10:40:48,074 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-07-20 10:40:48,075 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-07-20 10:40:48,075 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-07-20 10:40:48,075 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-07-20 10:40:48,075 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-07-20 10:40:48,075 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-07-20 10:40:48,076 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-07-20 10:40:48,076 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-07-20 10:40:48,076 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-07-20 10:40:48,076 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-07-20 10:40:48,076 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-07-20 10:40:48,077 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-07-20 10:40:48,077 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-07-20 10:40:48,077 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-07-20 10:40:48,078 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-07-20 10:40:48,078 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 10:40:48,078 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-07-20 10:40:48,079 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-07-20 10:40:48,079 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-20 10:40:48,079 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-20 10:40:48,079 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-07-20 10:40:48,079 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-20 10:40:48,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-20 10:40:48,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 10:40:48,080 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-20 10:40:48,081 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-07-20 10:40:48,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 10:40:48,082 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-07-20 10:40:48,082 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-07-20 10:40:48,083 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 10:40:48,083 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-07-20 10:40:48,083 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-07-20 10:40:48,083 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-07-20 10:40:48,083 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-07-20 10:40:48,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 10:40:48,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-20 10:40:48,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 10:40:49,217 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 10:40:49,217 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-20 10:40:49,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:40:49 BoogieIcfgContainer [2020-07-20 10:40:49,222 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 10:40:49,223 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 10:40:49,223 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 10:40:49,226 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 10:40:49,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 10:40:47" (1/3) ... [2020-07-20 10:40:49,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@746a4f39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 10:40:49, skipping insertion in model container [2020-07-20 10:40:49,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:40:47" (2/3) ... [2020-07-20 10:40:49,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@746a4f39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 10:40:49, skipping insertion in model container [2020-07-20 10:40:49,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:40:49" (3/3) ... [2020-07-20 10:40:49,230 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product54.cil.c [2020-07-20 10:40:49,240 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 10:40:49,249 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 10:40:49,262 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 10:40:49,295 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 10:40:49,295 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 10:40:49,295 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 10:40:49,296 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 10:40:49,297 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 10:40:49,297 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 10:40:49,298 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 10:40:49,298 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 10:40:49,323 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states. [2020-07-20 10:40:49,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-07-20 10:40:49,332 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:40:49,333 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] [2020-07-20 10:40:49,334 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:40:49,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:40:49,340 INFO L82 PathProgramCache]: Analyzing trace with hash -645790062, now seen corresponding path program 1 times [2020-07-20 10:40:49,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:40:49,349 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [402366540] [2020-07-20 10:40:49,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:40:49,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:40:49,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 648 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 10:40:49,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:40:49,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 10:40:49,631 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:40:49,632 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [402366540] [2020-07-20 10:40:49,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:40:49,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 10:40:49,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686973429] [2020-07-20 10:40:49,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 10:40:49,639 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:40:49,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 10:40:49,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 10:40:49,657 INFO L87 Difference]: Start difference. First operand 190 states. Second operand 2 states. [2020-07-20 10:40:49,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:40:49,725 INFO L93 Difference]: Finished difference Result 294 states and 365 transitions. [2020-07-20 10:40:49,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 10:40:49,727 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 46 [2020-07-20 10:40:49,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:40:49,743 INFO L225 Difference]: With dead ends: 294 [2020-07-20 10:40:49,744 INFO L226 Difference]: Without dead ends: 147 [2020-07-20 10:40:49,748 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 10:40:49,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-07-20 10:40:49,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2020-07-20 10:40:49,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-07-20 10:40:49,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 174 transitions. [2020-07-20 10:40:49,801 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 174 transitions. Word has length 46 [2020-07-20 10:40:49,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:40:49,801 INFO L479 AbstractCegarLoop]: Abstraction has 147 states and 174 transitions. [2020-07-20 10:40:49,801 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 10:40:49,801 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 174 transitions. [2020-07-20 10:40:49,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-07-20 10:40:49,805 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:40:49,805 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] [2020-07-20 10:40:50,020 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:40:50,021 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:40:50,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:40:50,022 INFO L82 PathProgramCache]: Analyzing trace with hash -1894049218, now seen corresponding path program 1 times [2020-07-20 10:40:50,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:40:50,024 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [477006481] [2020-07-20 10:40:50,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:40:50,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:40:50,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 10:40:50,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:40:50,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 10:40:50,287 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:40:50,288 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [477006481] [2020-07-20 10:40:50,288 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:40:50,288 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 10:40:50,288 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186275400] [2020-07-20 10:40:50,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 10:40:50,290 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:40:50,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 10:40:50,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 10:40:50,291 INFO L87 Difference]: Start difference. First operand 147 states and 174 transitions. Second operand 3 states. [2020-07-20 10:40:50,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:40:50,316 INFO L93 Difference]: Finished difference Result 239 states and 283 transitions. [2020-07-20 10:40:50,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 10:40:50,317 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2020-07-20 10:40:50,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:40:50,319 INFO L225 Difference]: With dead ends: 239 [2020-07-20 10:40:50,320 INFO L226 Difference]: Without dead ends: 138 [2020-07-20 10:40:50,321 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 10:40:50,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-07-20 10:40:50,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2020-07-20 10:40:50,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-07-20 10:40:50,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 162 transitions. [2020-07-20 10:40:50,337 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 162 transitions. Word has length 47 [2020-07-20 10:40:50,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:40:50,338 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 162 transitions. [2020-07-20 10:40:50,338 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 10:40:50,338 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 162 transitions. [2020-07-20 10:40:50,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-07-20 10:40:50,340 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:40:50,341 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] [2020-07-20 10:40:50,553 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:40:50,554 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:40:50,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:40:50,555 INFO L82 PathProgramCache]: Analyzing trace with hash 1275657422, now seen corresponding path program 1 times [2020-07-20 10:40:50,556 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:40:50,556 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [879397960] [2020-07-20 10:40:50,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:40:50,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:40:50,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 662 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-20 10:40:50,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:40:50,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 10:40:50,769 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:40:50,769 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [879397960] [2020-07-20 10:40:50,769 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:40:50,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 10:40:50,770 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616929907] [2020-07-20 10:40:50,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 10:40:50,770 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:40:50,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 10:40:50,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 10:40:50,771 INFO L87 Difference]: Start difference. First operand 138 states and 162 transitions. Second operand 3 states. [2020-07-20 10:40:50,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:40:50,789 INFO L93 Difference]: Finished difference Result 252 states and 301 transitions. [2020-07-20 10:40:50,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 10:40:50,790 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-07-20 10:40:50,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:40:50,792 INFO L225 Difference]: With dead ends: 252 [2020-07-20 10:40:50,792 INFO L226 Difference]: Without dead ends: 138 [2020-07-20 10:40:50,793 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 10:40:50,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-07-20 10:40:50,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2020-07-20 10:40:50,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-07-20 10:40:50,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 161 transitions. [2020-07-20 10:40:50,808 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 161 transitions. Word has length 52 [2020-07-20 10:40:50,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:40:50,809 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 161 transitions. [2020-07-20 10:40:50,809 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 10:40:50,809 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 161 transitions. [2020-07-20 10:40:50,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-07-20 10:40:50,812 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:40:50,812 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 10:40:51,027 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:40:51,028 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:40:51,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:40:51,030 INFO L82 PathProgramCache]: Analyzing trace with hash 120986168, now seen corresponding path program 1 times [2020-07-20 10:40:51,030 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:40:51,031 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1358353032] [2020-07-20 10:40:51,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:40:51,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:40:51,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 695 conjuncts, 15 conjunts are in the unsatisfiable core [2020-07-20 10:40:51,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:40:51,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 10:40:51,297 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:40:51,297 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1358353032] [2020-07-20 10:40:51,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:40:51,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-20 10:40:51,298 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986501917] [2020-07-20 10:40:51,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-20 10:40:51,301 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:40:51,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-20 10:40:51,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-07-20 10:40:51,301 INFO L87 Difference]: Start difference. First operand 138 states and 161 transitions. Second operand 7 states. [2020-07-20 10:40:51,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:40:51,991 INFO L93 Difference]: Finished difference Result 342 states and 426 transitions. [2020-07-20 10:40:51,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-20 10:40:51,991 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2020-07-20 10:40:51,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:40:51,995 INFO L225 Difference]: With dead ends: 342 [2020-07-20 10:40:51,995 INFO L226 Difference]: Without dead ends: 228 [2020-07-20 10:40:51,996 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2020-07-20 10:40:51,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-07-20 10:40:52,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 211. [2020-07-20 10:40:52,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-07-20 10:40:52,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 248 transitions. [2020-07-20 10:40:52,023 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 248 transitions. Word has length 70 [2020-07-20 10:40:52,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:40:52,024 INFO L479 AbstractCegarLoop]: Abstraction has 211 states and 248 transitions. [2020-07-20 10:40:52,024 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-20 10:40:52,024 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 248 transitions. [2020-07-20 10:40:52,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-07-20 10:40:52,026 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:40:52,027 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] [2020-07-20 10:40:52,240 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:40:52,241 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:40:52,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:40:52,242 INFO L82 PathProgramCache]: Analyzing trace with hash 243778552, now seen corresponding path program 1 times [2020-07-20 10:40:52,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:40:52,243 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1788543158] [2020-07-20 10:40:52,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:40:52,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:40:52,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 736 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 10:40:52,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:40:52,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 10:40:52,496 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:40:52,497 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1788543158] [2020-07-20 10:40:52,497 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:40:52,497 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 10:40:52,497 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705570349] [2020-07-20 10:40:52,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 10:40:52,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:40:52,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 10:40:52,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 10:40:52,501 INFO L87 Difference]: Start difference. First operand 211 states and 248 transitions. Second operand 5 states. [2020-07-20 10:40:52,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:40:52,536 INFO L93 Difference]: Finished difference Result 405 states and 497 transitions. [2020-07-20 10:40:52,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 10:40:52,536 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 85 [2020-07-20 10:40:52,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:40:52,539 INFO L225 Difference]: With dead ends: 405 [2020-07-20 10:40:52,540 INFO L226 Difference]: Without dead ends: 218 [2020-07-20 10:40:52,541 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 10:40:52,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-07-20 10:40:52,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 215. [2020-07-20 10:40:52,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-07-20 10:40:52,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 252 transitions. [2020-07-20 10:40:52,562 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 252 transitions. Word has length 85 [2020-07-20 10:40:52,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:40:52,563 INFO L479 AbstractCegarLoop]: Abstraction has 215 states and 252 transitions. [2020-07-20 10:40:52,563 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 10:40:52,563 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 252 transitions. [2020-07-20 10:40:52,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-07-20 10:40:52,564 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:40:52,565 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] [2020-07-20 10:40:52,779 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:40:52,780 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:40:52,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:40:52,781 INFO L82 PathProgramCache]: Analyzing trace with hash -30981062, now seen corresponding path program 1 times [2020-07-20 10:40:52,781 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:40:52,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1235263767] [2020-07-20 10:40:52,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:40:52,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:40:52,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 735 conjuncts, 23 conjunts are in the unsatisfiable core [2020-07-20 10:40:52,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:40:52,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 10:40:52,980 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:40:52,980 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1235263767] [2020-07-20 10:40:52,980 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:40:52,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 10:40:52,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306524119] [2020-07-20 10:40:52,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 10:40:52,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:40:52,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 10:40:52,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-20 10:40:52,982 INFO L87 Difference]: Start difference. First operand 215 states and 252 transitions. Second operand 6 states. [2020-07-20 10:40:53,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:40:53,185 INFO L93 Difference]: Finished difference Result 586 states and 713 transitions. [2020-07-20 10:40:53,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 10:40:53,186 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 85 [2020-07-20 10:40:53,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:40:53,190 INFO L225 Difference]: With dead ends: 586 [2020-07-20 10:40:53,190 INFO L226 Difference]: Without dead ends: 395 [2020-07-20 10:40:53,191 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-07-20 10:40:53,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2020-07-20 10:40:53,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 391. [2020-07-20 10:40:53,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2020-07-20 10:40:53,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 463 transitions. [2020-07-20 10:40:53,230 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 463 transitions. Word has length 85 [2020-07-20 10:40:53,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:40:53,231 INFO L479 AbstractCegarLoop]: Abstraction has 391 states and 463 transitions. [2020-07-20 10:40:53,232 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 10:40:53,232 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 463 transitions. [2020-07-20 10:40:53,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-07-20 10:40:53,234 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:40:53,234 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, 1, 1] [2020-07-20 10:40:53,448 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:40:53,449 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:40:53,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:40:53,450 INFO L82 PathProgramCache]: Analyzing trace with hash -856284930, now seen corresponding path program 1 times [2020-07-20 10:40:53,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:40:53,451 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [818848092] [2020-07-20 10:40:53,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:40:53,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:40:53,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 745 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-20 10:40:53,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:40:53,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 10:40:53,656 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:40:53,656 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [818848092] [2020-07-20 10:40:53,656 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:40:53,656 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 10:40:53,657 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571435845] [2020-07-20 10:40:53,657 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 10:40:53,657 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:40:53,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 10:40:53,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-20 10:40:53,658 INFO L87 Difference]: Start difference. First operand 391 states and 463 transitions. Second operand 6 states. [2020-07-20 10:40:53,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:40:53,705 INFO L93 Difference]: Finished difference Result 768 states and 930 transitions. [2020-07-20 10:40:53,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 10:40:53,705 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 89 [2020-07-20 10:40:53,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:40:53,708 INFO L225 Difference]: With dead ends: 768 [2020-07-20 10:40:53,708 INFO L226 Difference]: Without dead ends: 401 [2020-07-20 10:40:53,710 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-20 10:40:53,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2020-07-20 10:40:53,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 401. [2020-07-20 10:40:53,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 401 states. [2020-07-20 10:40:53,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 473 transitions. [2020-07-20 10:40:53,733 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 473 transitions. Word has length 89 [2020-07-20 10:40:53,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:40:53,734 INFO L479 AbstractCegarLoop]: Abstraction has 401 states and 473 transitions. [2020-07-20 10:40:53,734 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 10:40:53,734 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 473 transitions. [2020-07-20 10:40:53,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-07-20 10:40:53,735 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:40:53,736 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, 1, 1] [2020-07-20 10:40:53,949 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:40:53,949 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:40:53,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:40:53,950 INFO L82 PathProgramCache]: Analyzing trace with hash 1368774939, now seen corresponding path program 1 times [2020-07-20 10:40:53,950 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:40:53,951 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1236660273] [2020-07-20 10:40:53,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:40:54,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:40:54,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 746 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-20 10:40:54,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:40:54,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 10:40:54,142 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:40:54,143 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1236660273] [2020-07-20 10:40:54,143 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:40:54,143 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 10:40:54,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469121972] [2020-07-20 10:40:54,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 10:40:54,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:40:54,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 10:40:54,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 10:40:54,145 INFO L87 Difference]: Start difference. First operand 401 states and 473 transitions. Second operand 3 states. [2020-07-20 10:40:54,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:40:54,189 INFO L93 Difference]: Finished difference Result 1095 states and 1373 transitions. [2020-07-20 10:40:54,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 10:40:54,189 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 89 [2020-07-20 10:40:54,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:40:54,194 INFO L225 Difference]: With dead ends: 1095 [2020-07-20 10:40:54,194 INFO L226 Difference]: Without dead ends: 718 [2020-07-20 10:40:54,196 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 86 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 10:40:54,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2020-07-20 10:40:54,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 715. [2020-07-20 10:40:54,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 715 states. [2020-07-20 10:40:54,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 715 states to 715 states and 870 transitions. [2020-07-20 10:40:54,235 INFO L78 Accepts]: Start accepts. Automaton has 715 states and 870 transitions. Word has length 89 [2020-07-20 10:40:54,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:40:54,235 INFO L479 AbstractCegarLoop]: Abstraction has 715 states and 870 transitions. [2020-07-20 10:40:54,236 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 10:40:54,236 INFO L276 IsEmpty]: Start isEmpty. Operand 715 states and 870 transitions. [2020-07-20 10:40:54,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-07-20 10:40:54,238 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:40:54,238 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, 1, 1, 1, 1, 1, 1] [2020-07-20 10:40:54,452 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:40:54,453 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:40:54,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:40:54,454 INFO L82 PathProgramCache]: Analyzing trace with hash -1535755999, now seen corresponding path program 1 times [2020-07-20 10:40:54,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:40:54,455 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1063114123] [2020-07-20 10:40:54,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:40:54,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 10:40:54,648 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 10:40:54,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 10:40:54,780 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 10:40:55,048 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-20 10:40:55,049 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 10:40:55,263 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:40:55,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 10:40:55 BoogieIcfgContainer [2020-07-20 10:40:55,464 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 10:40:55,467 INFO L168 Benchmark]: Toolchain (without parser) took 8258.38 ms. Allocated memory was 139.5 MB in the beginning and 316.1 MB in the end (delta: 176.7 MB). Free memory was 103.0 MB in the beginning and 189.3 MB in the end (delta: -86.2 MB). Peak memory consumption was 90.5 MB. Max. memory is 7.1 GB. [2020-07-20 10:40:55,468 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 139.5 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 10:40:55,472 INFO L168 Benchmark]: CACSL2BoogieTranslator took 693.95 ms. Allocated memory was 139.5 MB in the beginning and 205.5 MB in the end (delta: 66.1 MB). Free memory was 102.6 MB in the beginning and 172.8 MB in the end (delta: -70.2 MB). Peak memory consumption was 28.4 MB. Max. memory is 7.1 GB. [2020-07-20 10:40:55,475 INFO L168 Benchmark]: Boogie Preprocessor took 86.53 ms. Allocated memory is still 205.5 MB. Free memory was 172.8 MB in the beginning and 168.8 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-07-20 10:40:55,476 INFO L168 Benchmark]: RCFGBuilder took 1231.46 ms. Allocated memory was 205.5 MB in the beginning and 235.9 MB in the end (delta: 30.4 MB). Free memory was 168.8 MB in the beginning and 194.0 MB in the end (delta: -25.3 MB). Peak memory consumption was 82.8 MB. Max. memory is 7.1 GB. [2020-07-20 10:40:55,477 INFO L168 Benchmark]: TraceAbstraction took 6241.13 ms. Allocated memory was 235.9 MB in the beginning and 316.1 MB in the end (delta: 80.2 MB). Free memory was 194.0 MB in the beginning and 189.3 MB in the end (delta: 4.8 MB). Peak memory consumption was 85.0 MB. Max. memory is 7.1 GB. [2020-07-20 10:40:55,487 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 139.5 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 693.95 ms. Allocated memory was 139.5 MB in the beginning and 205.5 MB in the end (delta: 66.1 MB). Free memory was 102.6 MB in the beginning and 172.8 MB in the end (delta: -70.2 MB). Peak memory consumption was 28.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 86.53 ms. Allocated memory is still 205.5 MB. Free memory was 172.8 MB in the beginning and 168.8 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1231.46 ms. Allocated memory was 205.5 MB in the beginning and 235.9 MB in the end (delta: 30.4 MB). Free memory was 168.8 MB in the beginning and 194.0 MB in the end (delta: -25.3 MB). Peak memory consumption was 82.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6241.13 ms. Allocated memory was 235.9 MB in the beginning and 316.1 MB in the end (delta: 80.2 MB). Free memory was 194.0 MB in the beginning and 189.3 MB in the end (delta: 4.8 MB). Peak memory consumption was 85.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 216]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L40] int cleanupTimeShifts = 4; [L229] int pumpRunning = 0; [L230] int systemActive = 1; [L691] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L889] int waterLevel = 1; [L890] int methaneLevelCritical = 0; VAL [\old(cleanupTimeShifts)=92, \old(head)=64, \old(head)=95, \old(methaneLevelCritical)=83, \old(pumpRunning)=76, \old(systemActive)=23, \old(waterLevel)=89, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L121] int retValue_acc ; [L122] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L126] FCALL select_helpers() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L127] FCALL select_features() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L128] CALL, EXPR valid_product() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L487] int retValue_acc ; [L490] retValue_acc = 1 [L491] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L128] RET, EXPR valid_product() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, valid_product()=1, waterLevel=1] [L128] tmp = valid_product() [L130] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L132] FCALL setup() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L133] CALL runTest() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L112] CALL test() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L146] int splverifierCounter ; [L147] int tmp ; [L148] int tmp___0 ; [L149] int tmp___1 ; [L150] int tmp___2 ; [L153] splverifierCounter = 0 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L155] COND TRUE 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L157] COND TRUE splverifierCounter < 4 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L163] tmp = __VERIFIER_nondet_int() [L165] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, waterLevel=1] [L167] CALL waterRise() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L907] COND TRUE waterLevel < 2 [L908] waterLevel = waterLevel + 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L167] RET waterRise() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, waterLevel=2] [L173] tmp___0 = __VERIFIER_nondet_int() [L175] COND TRUE \read(tmp___0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=1, waterLevel=2] [L177] CALL changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L919] COND FALSE !(\read(methaneLevelCritical)) [L922] methaneLevelCritical = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L177] RET changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=1, waterLevel=2] [L183] tmp___2 = __VERIFIER_nondet_int() [L185] COND FALSE !(\read(tmp___2)) [L191] tmp___1 = __VERIFIER_nondet_int() [L193] COND TRUE \read(tmp___1) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=1, tmp___1=-1, tmp___2=0, waterLevel=2] [L200] CALL timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L237] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L244] COND TRUE \read(systemActive) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L246] CALL processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L318] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L321] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L336] CALL processEnvironment__wrappee__lowWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L292] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L295] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L310] CALL processEnvironment__wrappee__highWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L266] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L269] COND TRUE ! pumpRunning VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L271] CALL, EXPR isHighWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L415] int retValue_acc ; [L416] int tmp ; [L417] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L421] CALL, EXPR isHighWaterSensorDry() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L969] int retValue_acc ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L972] COND FALSE !(waterLevel < 2) [L976] retValue_acc = 0 [L977] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L421] RET, EXPR isHighWaterSensorDry() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterSensorDry()=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L421] tmp = isHighWaterSensorDry() [L423] COND FALSE !(\read(tmp)) [L426] tmp___0 = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L428] retValue_acc = tmp___0 [L429] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, retValue_acc=1, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L271] RET, EXPR isHighWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterLevel()=1, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L271] tmp = isHighWaterLevel() [L273] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=1, waterLevel=2] [L275] CALL activatePump() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L346] pumpRunning = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L275] RET activatePump() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L310] RET processEnvironment__wrappee__highWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L336] RET processEnvironment__wrappee__lowWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L246] RET processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L252] CALL __utac_acc__Specification1_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L497] int tmp ; [L498] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L502] CALL, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L928] int retValue_acc ; [L931] retValue_acc = methaneLevelCritical [L932] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L502] RET, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L502] tmp = isMethaneLevelCritical() [L504] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L506] CALL, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L370] int retValue_acc ; [L373] retValue_acc = pumpRunning [L374] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L506] RET, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isPumpRunning()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L506] tmp___0 = isPumpRunning() [L508] COND TRUE \read(tmp___0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L510] CALL __automaton_fail() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L216] __VERIFIER_error() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 42 procedures, 249 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.9s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1341 SDtfs, 530 SDslu, 2246 SDs, 0 SdLazy, 559 SolverSat, 117 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 564 GetRequests, 536 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=715occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 27 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 656 NumberOfCodeBlocks, 656 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 555 ConstructedInterpolants, 0 QuantifiedInterpolants, 72595 SizeOfPredicates, 20 NumberOfNonLiveVariables, 5616 ConjunctsInSsa, 75 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...