/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_spec4_product42.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 10:42:57,931 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 10:42:57,933 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 10:42:57,946 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 10:42:57,947 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 10:42:57,948 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 10:42:57,949 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 10:42:57,951 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 10:42:57,953 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 10:42:57,953 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 10:42:57,954 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 10:42:57,955 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 10:42:57,956 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 10:42:57,957 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 10:42:57,958 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 10:42:57,959 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 10:42:57,960 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 10:42:57,961 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 10:42:57,962 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 10:42:57,964 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 10:42:57,966 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 10:42:57,967 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 10:42:57,968 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 10:42:57,968 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 10:42:57,971 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 10:42:57,971 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 10:42:57,971 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 10:42:57,972 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 10:42:57,973 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 10:42:57,974 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-20 10:42:57,974 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 10:42:57,975 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 10:42:57,975 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 10:42:57,976 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 10:42:57,977 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 10:42:57,977 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 10:42:57,978 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 10:42:57,978 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 10:42:57,979 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 10:42:57,979 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 10:42:57,980 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 10:42:57,981 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 10:42:57,996 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 10:42:57,996 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 10:42:57,998 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 10:42:57,998 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 10:42:57,998 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 10:42:57,998 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 10:42:57,999 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 10:42:57,999 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 10:42:57,999 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 10:42:57,999 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 10:42:57,999 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 10:42:58,000 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 10:42:58,000 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 10:42:58,000 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 10:42:58,000 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 10:42:58,001 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 10:42:58,001 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 10:42:58,001 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 10:42:58,001 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 10:42:58,001 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 10:42:58,002 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 10:42:58,002 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 10:42:58,002 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 10:42:58,002 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 10:42:58,002 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 10:42:58,003 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 10:42:58,003 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:42:58,003 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 10:42:58,003 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 10:42:58,003 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 10:42:58,273 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 10:42:58,285 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 10:42:58,289 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 10:42:58,290 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 10:42:58,291 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 10:42:58,291 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product42.cil.c [2020-07-20 10:42:58,366 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d32a2c24/dcd350bf950d4b3691b079474e24902f/FLAG4409a8189 [2020-07-20 10:42:58,920 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 10:42:58,921 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product42.cil.c [2020-07-20 10:42:58,937 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d32a2c24/dcd350bf950d4b3691b079474e24902f/FLAG4409a8189 [2020-07-20 10:42:59,166 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d32a2c24/dcd350bf950d4b3691b079474e24902f [2020-07-20 10:42:59,176 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 10:42:59,179 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 10:42:59,180 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 10:42:59,180 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 10:42:59,183 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 10:42:59,185 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:42:59" (1/1) ... [2020-07-20 10:42:59,188 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39c8871c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:42:59, skipping insertion in model container [2020-07-20 10:42:59,188 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:42:59" (1/1) ... [2020-07-20 10:42:59,196 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 10:42:59,259 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 10:42:59,730 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 10:42:59,746 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 10:42:59,837 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 10:42:59,871 INFO L208 MainTranslator]: Completed translation [2020-07-20 10:42:59,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:42:59 WrapperNode [2020-07-20 10:42:59,872 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 10:42:59,873 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 10:42:59,873 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 10:42:59,873 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 10:42:59,884 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:42:59" (1/1) ... [2020-07-20 10:42:59,884 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:42:59" (1/1) ... [2020-07-20 10:42:59,903 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:42:59" (1/1) ... [2020-07-20 10:42:59,904 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:42:59" (1/1) ... [2020-07-20 10:42:59,933 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:42:59" (1/1) ... [2020-07-20 10:42:59,943 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:42:59" (1/1) ... [2020-07-20 10:42:59,948 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:42:59" (1/1) ... [2020-07-20 10:42:59,956 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 10:42:59,957 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 10:42:59,957 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 10:42:59,957 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 10:42:59,958 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:42:59" (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 10:43:00,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 10:43:00,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 10:43:00,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-07-20 10:43:00,034 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-07-20 10:43:00,034 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-07-20 10:43:00,034 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-07-20 10:43:00,034 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-07-20 10:43:00,035 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-07-20 10:43:00,035 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-07-20 10:43:00,035 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-07-20 10:43:00,036 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-07-20 10:43:00,036 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-07-20 10:43:00,037 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-07-20 10:43:00,037 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-07-20 10:43:00,037 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-07-20 10:43:00,038 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-07-20 10:43:00,038 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-07-20 10:43:00,038 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-07-20 10:43:00,038 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-07-20 10:43:00,039 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-07-20 10:43:00,039 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-07-20 10:43:00,039 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-07-20 10:43:00,039 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-07-20 10:43:00,039 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-07-20 10:43:00,040 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-07-20 10:43:00,040 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 10:43:00,041 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-07-20 10:43:00,041 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-07-20 10:43:00,041 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-07-20 10:43:00,041 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-07-20 10:43:00,041 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-07-20 10:43:00,041 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-07-20 10:43:00,042 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-07-20 10:43:00,042 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-07-20 10:43:00,042 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-07-20 10:43:00,042 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-07-20 10:43:00,043 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-07-20 10:43:00,043 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-07-20 10:43:00,043 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-07-20 10:43:00,043 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 10:43:00,043 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 10:43:00,044 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-07-20 10:43:00,044 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-07-20 10:43:00,044 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-07-20 10:43:00,044 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-07-20 10:43:00,044 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-07-20 10:43:00,044 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-07-20 10:43:00,044 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-07-20 10:43:00,045 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-07-20 10:43:00,045 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 10:43:00,045 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-07-20 10:43:00,045 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-20 10:43:00,045 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-20 10:43:00,045 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-07-20 10:43:00,045 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-20 10:43:00,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-20 10:43:00,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 10:43:00,046 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-20 10:43:00,046 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-07-20 10:43:00,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 10:43:00,046 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-07-20 10:43:00,047 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-07-20 10:43:00,047 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 10:43:00,048 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-07-20 10:43:00,048 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-07-20 10:43:00,048 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-07-20 10:43:00,048 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-07-20 10:43:00,048 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-07-20 10:43:00,048 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-07-20 10:43:00,049 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-07-20 10:43:00,049 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-07-20 10:43:00,049 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-07-20 10:43:00,050 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-07-20 10:43:00,050 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-07-20 10:43:00,050 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-07-20 10:43:00,050 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-07-20 10:43:00,050 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-07-20 10:43:00,050 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-07-20 10:43:00,051 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-07-20 10:43:00,051 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-07-20 10:43:00,051 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 10:43:00,052 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-07-20 10:43:00,052 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-07-20 10:43:00,052 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-07-20 10:43:00,053 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-07-20 10:43:00,053 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-07-20 10:43:00,053 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-07-20 10:43:00,054 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-07-20 10:43:00,054 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-07-20 10:43:00,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 10:43:00,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-20 10:43:00,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 10:43:01,163 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 10:43:01,164 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-20 10:43:01,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:43:01 BoogieIcfgContainer [2020-07-20 10:43:01,173 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 10:43:01,175 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 10:43:01,175 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 10:43:01,179 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 10:43:01,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 10:42:59" (1/3) ... [2020-07-20 10:43:01,180 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f2181d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 10:43:01, skipping insertion in model container [2020-07-20 10:43:01,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:42:59" (2/3) ... [2020-07-20 10:43:01,181 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f2181d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 10:43:01, skipping insertion in model container [2020-07-20 10:43:01,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:43:01" (3/3) ... [2020-07-20 10:43:01,183 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product42.cil.c [2020-07-20 10:43:01,195 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 10:43:01,204 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 10:43:01,220 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 10:43:01,245 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 10:43:01,245 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 10:43:01,245 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 10:43:01,245 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 10:43:01,246 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 10:43:01,246 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 10:43:01,246 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 10:43:01,246 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 10:43:01,269 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states. [2020-07-20 10:43:01,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-07-20 10:43:01,278 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:43:01,279 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 10:43:01,280 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:43:01,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:43:01,286 INFO L82 PathProgramCache]: Analyzing trace with hash -1708045389, now seen corresponding path program 1 times [2020-07-20 10:43:01,295 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:43:01,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [473959269] [2020-07-20 10:43:01,296 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 10:43:01,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:43:01,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 10:43:01,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:43:01,580 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 10:43:01,580 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:43:01,582 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [473959269] [2020-07-20 10:43:01,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:43:01,583 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 10:43:01,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777031964] [2020-07-20 10:43:01,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 10:43:01,590 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:43:01,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 10:43:01,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 10:43:01,607 INFO L87 Difference]: Start difference. First operand 167 states. Second operand 2 states. [2020-07-20 10:43:01,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:43:01,651 INFO L93 Difference]: Finished difference Result 248 states and 303 transitions. [2020-07-20 10:43:01,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 10:43:01,652 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 46 [2020-07-20 10:43:01,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:43:01,665 INFO L225 Difference]: With dead ends: 248 [2020-07-20 10:43:01,666 INFO L226 Difference]: Without dead ends: 124 [2020-07-20 10:43:01,670 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 10:43:01,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-07-20 10:43:01,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2020-07-20 10:43:01,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-07-20 10:43:01,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 143 transitions. [2020-07-20 10:43:01,735 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 143 transitions. Word has length 46 [2020-07-20 10:43:01,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:43:01,736 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 143 transitions. [2020-07-20 10:43:01,736 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 10:43:01,737 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 143 transitions. [2020-07-20 10:43:01,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-07-20 10:43:01,740 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:43:01,740 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 10:43:01,954 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:43:01,954 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:43:01,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:43:01,955 INFO L82 PathProgramCache]: Analyzing trace with hash 1677032245, now seen corresponding path program 1 times [2020-07-20 10:43:01,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:43:01,955 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [167724655] [2020-07-20 10:43:01,955 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 10:43:02,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:43:02,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 650 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 10:43:02,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:43:02,213 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 10:43:02,214 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:43:02,214 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [167724655] [2020-07-20 10:43:02,215 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:43:02,215 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 10:43:02,215 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790509592] [2020-07-20 10:43:02,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 10:43:02,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:43:02,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 10:43:02,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 10:43:02,220 INFO L87 Difference]: Start difference. First operand 124 states and 143 transitions. Second operand 3 states. [2020-07-20 10:43:02,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:43:02,261 INFO L93 Difference]: Finished difference Result 193 states and 221 transitions. [2020-07-20 10:43:02,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 10:43:02,262 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2020-07-20 10:43:02,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:43:02,265 INFO L225 Difference]: With dead ends: 193 [2020-07-20 10:43:02,285 INFO L226 Difference]: Without dead ends: 115 [2020-07-20 10:43:02,287 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 10:43:02,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-07-20 10:43:02,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2020-07-20 10:43:02,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-07-20 10:43:02,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 131 transitions. [2020-07-20 10:43:02,305 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 131 transitions. Word has length 47 [2020-07-20 10:43:02,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:43:02,306 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 131 transitions. [2020-07-20 10:43:02,306 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 10:43:02,306 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 131 transitions. [2020-07-20 10:43:02,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-07-20 10:43:02,308 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:43:02,309 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 10:43:02,521 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:43:02,522 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:43:02,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:43:02,523 INFO L82 PathProgramCache]: Analyzing trace with hash -115096576, now seen corresponding path program 1 times [2020-07-20 10:43:02,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:43:02,524 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1637118391] [2020-07-20 10:43:02,524 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 10:43:02,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:43:02,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 663 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-20 10:43:02,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:43:02,731 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 10:43:02,731 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:43:02,732 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1637118391] [2020-07-20 10:43:02,732 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:43:02,732 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 10:43:02,732 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662865593] [2020-07-20 10:43:02,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 10:43:02,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:43:02,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 10:43:02,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 10:43:02,734 INFO L87 Difference]: Start difference. First operand 115 states and 131 transitions. Second operand 3 states. [2020-07-20 10:43:02,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:43:02,749 INFO L93 Difference]: Finished difference Result 206 states and 239 transitions. [2020-07-20 10:43:02,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 10:43:02,750 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-07-20 10:43:02,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:43:02,752 INFO L225 Difference]: With dead ends: 206 [2020-07-20 10:43:02,752 INFO L226 Difference]: Without dead ends: 115 [2020-07-20 10:43:02,753 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 10:43:02,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-07-20 10:43:02,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2020-07-20 10:43:02,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-07-20 10:43:02,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 130 transitions. [2020-07-20 10:43:02,770 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 130 transitions. Word has length 52 [2020-07-20 10:43:02,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:43:02,770 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 130 transitions. [2020-07-20 10:43:02,770 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 10:43:02,770 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 130 transitions. [2020-07-20 10:43:02,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-07-20 10:43:02,773 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:43:02,773 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] [2020-07-20 10:43:02,986 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:43:02,987 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:43:02,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:43:02,987 INFO L82 PathProgramCache]: Analyzing trace with hash -721685397, now seen corresponding path program 1 times [2020-07-20 10:43:02,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:43:02,988 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [626316432] [2020-07-20 10:43:02,988 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 10:43:03,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:43:03,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 676 conjuncts, 14 conjunts are in the unsatisfiable core [2020-07-20 10:43:03,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:43:03,255 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 10:43:03,256 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:43:03,256 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [626316432] [2020-07-20 10:43:03,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:43:03,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 10:43:03,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985034469] [2020-07-20 10:43:03,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 10:43:03,258 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:43:03,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 10:43:03,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-20 10:43:03,259 INFO L87 Difference]: Start difference. First operand 115 states and 130 transitions. Second operand 6 states. [2020-07-20 10:43:03,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:43:03,589 INFO L93 Difference]: Finished difference Result 286 states and 342 transitions. [2020-07-20 10:43:03,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 10:43:03,590 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 60 [2020-07-20 10:43:03,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:43:03,594 INFO L225 Difference]: With dead ends: 286 [2020-07-20 10:43:03,594 INFO L226 Difference]: Without dead ends: 195 [2020-07-20 10:43:03,596 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 55 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 10:43:03,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-07-20 10:43:03,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2020-07-20 10:43:03,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-07-20 10:43:03,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 230 transitions. [2020-07-20 10:43:03,621 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 230 transitions. Word has length 60 [2020-07-20 10:43:03,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:43:03,624 INFO L479 AbstractCegarLoop]: Abstraction has 195 states and 230 transitions. [2020-07-20 10:43:03,624 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 10:43:03,624 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 230 transitions. [2020-07-20 10:43:03,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-07-20 10:43:03,626 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:43:03,626 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] [2020-07-20 10:43:03,841 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:43:03,842 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:43:03,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:43:03,843 INFO L82 PathProgramCache]: Analyzing trace with hash -1310247215, now seen corresponding path program 1 times [2020-07-20 10:43:03,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:43:03,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [928329550] [2020-07-20 10:43:03,845 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 10:43:04,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:43:04,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 685 conjuncts, 31 conjunts are in the unsatisfiable core [2020-07-20 10:43:04,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:43:04,100 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 10:43:04,100 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:43:04,100 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [928329550] [2020-07-20 10:43:04,101 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:43:04,101 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-20 10:43:04,101 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561094160] [2020-07-20 10:43:04,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-20 10:43:04,102 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:43:04,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-20 10:43:04,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-07-20 10:43:04,103 INFO L87 Difference]: Start difference. First operand 195 states and 230 transitions. Second operand 7 states. [2020-07-20 10:43:04,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:43:04,794 INFO L93 Difference]: Finished difference Result 477 states and 598 transitions. [2020-07-20 10:43:04,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-20 10:43:04,795 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 64 [2020-07-20 10:43:04,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:43:04,804 INFO L225 Difference]: With dead ends: 477 [2020-07-20 10:43:04,805 INFO L226 Difference]: Without dead ends: 306 [2020-07-20 10:43:04,808 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2020-07-20 10:43:04,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-07-20 10:43:04,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 289. [2020-07-20 10:43:04,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289 states. [2020-07-20 10:43:04,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 350 transitions. [2020-07-20 10:43:04,869 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 350 transitions. Word has length 64 [2020-07-20 10:43:04,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:43:04,869 INFO L479 AbstractCegarLoop]: Abstraction has 289 states and 350 transitions. [2020-07-20 10:43:04,869 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-20 10:43:04,870 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 350 transitions. [2020-07-20 10:43:04,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-07-20 10:43:04,873 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:43:04,874 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:43:05,086 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:43:05,087 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:43:05,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:43:05,088 INFO L82 PathProgramCache]: Analyzing trace with hash -846876321, now seen corresponding path program 1 times [2020-07-20 10:43:05,089 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:43:05,089 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [474073417] [2020-07-20 10:43:05,090 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 10:43:05,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:43:05,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 837 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 10:43:05,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:43:05,303 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-07-20 10:43:05,303 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:43:05,304 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [474073417] [2020-07-20 10:43:05,304 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:43:05,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 10:43:05,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663147221] [2020-07-20 10:43:05,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 10:43:05,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:43:05,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 10:43:05,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 10:43:05,306 INFO L87 Difference]: Start difference. First operand 289 states and 350 transitions. Second operand 5 states. [2020-07-20 10:43:05,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:43:05,334 INFO L93 Difference]: Finished difference Result 561 states and 702 transitions. [2020-07-20 10:43:05,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 10:43:05,335 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2020-07-20 10:43:05,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:43:05,337 INFO L225 Difference]: With dead ends: 561 [2020-07-20 10:43:05,338 INFO L226 Difference]: Without dead ends: 296 [2020-07-20 10:43:05,339 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 122 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 10:43:05,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2020-07-20 10:43:05,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 296. [2020-07-20 10:43:05,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 296 states. [2020-07-20 10:43:05,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 356 transitions. [2020-07-20 10:43:05,363 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 356 transitions. Word has length 126 [2020-07-20 10:43:05,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:43:05,364 INFO L479 AbstractCegarLoop]: Abstraction has 296 states and 356 transitions. [2020-07-20 10:43:05,364 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 10:43:05,364 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 356 transitions. [2020-07-20 10:43:05,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-07-20 10:43:05,366 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:43:05,367 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:43:05,580 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:43:05,581 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:43:05,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:43:05,582 INFO L82 PathProgramCache]: Analyzing trace with hash -1087116067, now seen corresponding path program 1 times [2020-07-20 10:43:05,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:43:05,583 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [818655004] [2020-07-20 10:43:05,584 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 10:43:05,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:43:05,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 836 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-20 10:43:05,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:43:05,805 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-07-20 10:43:05,806 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:43:05,806 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [818655004] [2020-07-20 10:43:05,806 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:43:05,807 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 10:43:05,807 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899305739] [2020-07-20 10:43:05,808 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 10:43:05,808 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:43:05,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 10:43:05,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-20 10:43:05,809 INFO L87 Difference]: Start difference. First operand 296 states and 356 transitions. Second operand 6 states. [2020-07-20 10:43:05,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:43:05,849 INFO L93 Difference]: Finished difference Result 549 states and 692 transitions. [2020-07-20 10:43:05,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 10:43:05,849 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 126 [2020-07-20 10:43:05,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:43:05,852 INFO L225 Difference]: With dead ends: 549 [2020-07-20 10:43:05,852 INFO L226 Difference]: Without dead ends: 277 [2020-07-20 10:43:05,854 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 121 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 10:43:05,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2020-07-20 10:43:05,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 275. [2020-07-20 10:43:05,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2020-07-20 10:43:05,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 330 transitions. [2020-07-20 10:43:05,876 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 330 transitions. Word has length 126 [2020-07-20 10:43:05,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:43:05,876 INFO L479 AbstractCegarLoop]: Abstraction has 275 states and 330 transitions. [2020-07-20 10:43:05,877 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 10:43:05,877 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 330 transitions. [2020-07-20 10:43:05,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-07-20 10:43:05,898 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:43:05,898 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:43:06,110 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:43:06,111 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:43:06,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:43:06,112 INFO L82 PathProgramCache]: Analyzing trace with hash 1963035424, now seen corresponding path program 1 times [2020-07-20 10:43:06,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:43:06,114 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [800514956] [2020-07-20 10:43:06,114 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 10:43:06,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:43:06,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 837 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-20 10:43:06,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:43:06,361 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 10:43:06,362 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:43:06,362 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [800514956] [2020-07-20 10:43:06,362 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:43:06,362 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 10:43:06,363 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032609522] [2020-07-20 10:43:06,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 10:43:06,363 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:43:06,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 10:43:06,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 10:43:06,364 INFO L87 Difference]: Start difference. First operand 275 states and 330 transitions. Second operand 6 states. [2020-07-20 10:43:07,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:43:07,066 INFO L93 Difference]: Finished difference Result 693 states and 890 transitions. [2020-07-20 10:43:07,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 10:43:07,067 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 126 [2020-07-20 10:43:07,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:43:07,070 INFO L225 Difference]: With dead ends: 693 [2020-07-20 10:43:07,071 INFO L226 Difference]: Without dead ends: 442 [2020-07-20 10:43:07,072 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-07-20 10:43:07,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2020-07-20 10:43:07,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 426. [2020-07-20 10:43:07,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 426 states. [2020-07-20 10:43:07,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 520 transitions. [2020-07-20 10:43:07,110 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 520 transitions. Word has length 126 [2020-07-20 10:43:07,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:43:07,111 INFO L479 AbstractCegarLoop]: Abstraction has 426 states and 520 transitions. [2020-07-20 10:43:07,111 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 10:43:07,111 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 520 transitions. [2020-07-20 10:43:07,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-07-20 10:43:07,117 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:43:07,117 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:43:07,332 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:43:07,333 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:43:07,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:43:07,334 INFO L82 PathProgramCache]: Analyzing trace with hash 942189914, now seen corresponding path program 1 times [2020-07-20 10:43:07,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:43:07,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [296883761] [2020-07-20 10:43:07,335 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 10:43:07,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:43:07,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 846 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-20 10:43:07,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:43:07,602 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 10:43:07,603 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 10:43:07,932 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-20 10:43:07,933 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [296883761] [2020-07-20 10:43:07,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 10:43:07,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2020-07-20 10:43:07,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821626397] [2020-07-20 10:43:07,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-20 10:43:07,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:43:07,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-20 10:43:07,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-07-20 10:43:07,935 INFO L87 Difference]: Start difference. First operand 426 states and 520 transitions. Second operand 12 states. [2020-07-20 10:43:09,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:43:09,444 INFO L93 Difference]: Finished difference Result 1097 states and 1467 transitions. [2020-07-20 10:43:09,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-07-20 10:43:09,445 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 130 [2020-07-20 10:43:09,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:43:09,454 INFO L225 Difference]: With dead ends: 1097 [2020-07-20 10:43:09,455 INFO L226 Difference]: Without dead ends: 695 [2020-07-20 10:43:09,458 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 248 SyntacticMatches, 6 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=148, Invalid=358, Unknown=0, NotChecked=0, Total=506 [2020-07-20 10:43:09,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2020-07-20 10:43:09,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 532. [2020-07-20 10:43:09,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 532 states. [2020-07-20 10:43:09,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 651 transitions. [2020-07-20 10:43:09,523 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 651 transitions. Word has length 130 [2020-07-20 10:43:09,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:43:09,525 INFO L479 AbstractCegarLoop]: Abstraction has 532 states and 651 transitions. [2020-07-20 10:43:09,525 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-20 10:43:09,525 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 651 transitions. [2020-07-20 10:43:09,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-07-20 10:43:09,531 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:43:09,531 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:43:09,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:43:09,745 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:43:09,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:43:09,745 INFO L82 PathProgramCache]: Analyzing trace with hash 223073758, now seen corresponding path program 2 times [2020-07-20 10:43:09,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:43:09,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [392250222] [2020-07-20 10:43:09,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:43:10,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 10:43:10,055 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 10:43:10,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 10:43:10,159 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 10:43:10,500 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-20 10:43:10,501 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 10:43:10,716 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:43:10,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 10:43:10 BoogieIcfgContainer [2020-07-20 10:43:10,923 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 10:43:10,926 INFO L168 Benchmark]: Toolchain (without parser) took 11747.64 ms. Allocated memory was 142.6 MB in the beginning and 373.8 MB in the end (delta: 231.2 MB). Free memory was 100.0 MB in the beginning and 319.4 MB in the end (delta: -219.4 MB). Peak memory consumption was 215.3 MB. Max. memory is 7.1 GB. [2020-07-20 10:43:10,927 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 142.6 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 10:43:10,928 INFO L168 Benchmark]: CACSL2BoogieTranslator took 692.90 ms. Allocated memory was 142.6 MB in the beginning and 199.8 MB in the end (delta: 57.1 MB). Free memory was 99.6 MB in the beginning and 168.3 MB in the end (delta: -68.7 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. [2020-07-20 10:43:10,929 INFO L168 Benchmark]: Boogie Preprocessor took 83.80 ms. Allocated memory is still 199.8 MB. Free memory was 168.3 MB in the beginning and 163.9 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. [2020-07-20 10:43:10,930 INFO L168 Benchmark]: RCFGBuilder took 1215.81 ms. Allocated memory was 199.8 MB in the beginning and 228.1 MB in the end (delta: 28.3 MB). Free memory was 163.9 MB in the beginning and 194.6 MB in the end (delta: -30.7 MB). Peak memory consumption was 88.7 MB. Max. memory is 7.1 GB. [2020-07-20 10:43:10,930 INFO L168 Benchmark]: TraceAbstraction took 9748.37 ms. Allocated memory was 228.1 MB in the beginning and 373.8 MB in the end (delta: 145.8 MB). Free memory was 193.1 MB in the beginning and 319.4 MB in the end (delta: -126.3 MB). Peak memory consumption was 223.0 MB. Max. memory is 7.1 GB. [2020-07-20 10:43:10,934 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 142.6 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 692.90 ms. Allocated memory was 142.6 MB in the beginning and 199.8 MB in the end (delta: 57.1 MB). Free memory was 99.6 MB in the beginning and 168.3 MB in the end (delta: -68.7 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 83.80 ms. Allocated memory is still 199.8 MB. Free memory was 168.3 MB in the beginning and 163.9 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1215.81 ms. Allocated memory was 199.8 MB in the beginning and 228.1 MB in the end (delta: 28.3 MB). Free memory was 163.9 MB in the beginning and 194.6 MB in the end (delta: -30.7 MB). Peak memory consumption was 88.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 9748.37 ms. Allocated memory was 228.1 MB in the beginning and 373.8 MB in the end (delta: 145.8 MB). Free memory was 193.1 MB in the beginning and 319.4 MB in the end (delta: -126.3 MB). Peak memory consumption was 223.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 924]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L47] int waterLevel = 1; [L48] int methaneLevelCritical = 0; [L310] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L573] int cleanupTimeShifts = 4; [L742] int pumpRunning = 0; [L743] int systemActive = 1; VAL [\old(cleanupTimeShifts)=29, \old(head)=45, \old(head)=31, \old(methaneLevelCritical)=61, \old(pumpRunning)=64, \old(systemActive)=46, \old(waterLevel)=86, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L649] int retValue_acc ; [L650] 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] [L654] 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] [L655] 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] [L656] 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] [L536] int retValue_acc ; [L539] retValue_acc = 1 [L540] 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] [L656] 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] [L656] tmp = valid_product() [L658] 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] [L660] 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] [L661] 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] [L643] 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] [L674] int splverifierCounter ; [L675] int tmp ; [L676] int tmp___0 ; [L677] int tmp___1 ; [L678] int tmp___2 ; [L681] 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] [L683] 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] [L685] 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] [L691] tmp = __VERIFIER_nondet_int() [L693] 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] [L695] 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] [L65] COND TRUE waterLevel < 2 [L66] 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] [L695] 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] [L701] tmp___0 = __VERIFIER_nondet_int() [L703] COND FALSE !(\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=0, waterLevel=2] [L711] tmp___2 = __VERIFIER_nondet_int() [L713] COND FALSE !(\read(tmp___2)) [L719] tmp___1 = __VERIFIER_nondet_int() [L721] COND TRUE \read(tmp___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, tmp=-1, tmp___0=0, tmp___1=-1, tmp___2=0, waterLevel=2] [L728] CALL timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L749] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L756] COND TRUE \read(systemActive) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L758] CALL processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L778] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L781] COND TRUE ! pumpRunning VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L783] CALL, EXPR isHighWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L893] int retValue_acc ; [L894] int tmp ; [L895] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L899] CALL, EXPR isHighWaterSensorDry() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L127] int retValue_acc ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L130] COND FALSE !(waterLevel < 2) [L134] retValue_acc = 0 [L135] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L899] RET, EXPR isHighWaterSensorDry() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterSensorDry()=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L899] tmp = isHighWaterSensorDry() [L901] COND FALSE !(\read(tmp)) [L904] tmp___0 = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L906] retValue_acc = tmp___0 [L907] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L783] RET, EXPR isHighWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterLevel()=1, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L783] tmp = isHighWaterLevel() [L785] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=2] [L787] CALL activatePump() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L812] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L816] CALL, EXPR isMethaneAlarm() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L837] int retValue_acc ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L841] CALL, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L841] RET, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L841] retValue_acc = isMethaneLevelCritical() [L843] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L816] RET, EXPR isMethaneAlarm() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneAlarm()=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L816] tmp = isMethaneAlarm() [L818] COND FALSE !(\read(tmp)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=0, waterLevel=2] [L822] CALL activatePump__wrappee__highWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L806] pumpRunning = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L822] RET activatePump__wrappee__highWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=2] [L787] RET activatePump() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L758] RET processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L764] CALL __utac_acc__Specification4_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L548] int tmp ; [L549] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L553] CALL, EXPR getWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L118] int retValue_acc ; [L121] retValue_acc = waterLevel [L122] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=2, systemActive=1, waterLevel=2] [L553] RET, EXPR getWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, getWaterLevel()=2, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L553] tmp = getWaterLevel() [L555] COND FALSE !(tmp == 0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=2, waterLevel=2] [L764] RET __utac_acc__Specification4_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L728] RET timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=0, tmp___1=-1, tmp___2=0, waterLevel=2] [L683] COND TRUE 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=0, tmp___1=-1, tmp___2=0, waterLevel=2] [L685] 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=1, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=0, tmp___1=-1, tmp___2=0, waterLevel=2] [L691] tmp = __VERIFIER_nondet_int() [L693] COND FALSE !(\read(tmp)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=-1, tmp___2=0, waterLevel=2] [L701] tmp___0 = __VERIFIER_nondet_int() [L703] COND FALSE !(\read(tmp___0)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=-1, tmp___2=0, waterLevel=2] [L711] tmp___2 = __VERIFIER_nondet_int() [L713] COND FALSE !(\read(tmp___2)) [L719] tmp___1 = __VERIFIER_nondet_int() [L721] COND TRUE \read(tmp___1) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=-1, tmp___2=0, waterLevel=2] [L728] CALL timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L749] COND TRUE \read(pumpRunning) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L751] CALL lowerWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L53] COND TRUE waterLevel > 0 [L54] waterLevel = waterLevel - 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L751] RET lowerWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L756] COND TRUE \read(systemActive) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L758] CALL processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L778] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L781] COND FALSE !(! pumpRunning) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L796] FCALL processEnvironment__wrappee__base() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L758] RET processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L764] CALL __utac_acc__Specification4_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L548] int tmp ; [L549] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L553] CALL, EXPR getWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L118] int retValue_acc ; [L121] retValue_acc = waterLevel [L122] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=1] [L553] RET, EXPR getWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, getWaterLevel()=1, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L553] tmp = getWaterLevel() [L555] COND FALSE !(tmp == 0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=1, waterLevel=1] [L764] RET __utac_acc__Specification4_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L728] RET timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=-1, tmp___2=0, waterLevel=1] [L683] COND TRUE 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=-1, tmp___2=0, waterLevel=1] [L685] 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=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=-1, tmp___2=0, waterLevel=1] [L691] tmp = __VERIFIER_nondet_int() [L693] COND FALSE !(\read(tmp)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=-1, tmp___2=0, waterLevel=1] [L701] tmp___0 = __VERIFIER_nondet_int() [L703] COND FALSE !(\read(tmp___0)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=-1, tmp___2=0, waterLevel=1] [L711] tmp___2 = __VERIFIER_nondet_int() [L713] COND FALSE !(\read(tmp___2)) [L719] tmp___1 = __VERIFIER_nondet_int() [L721] COND TRUE \read(tmp___1) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=1, tmp___2=0, waterLevel=1] [L728] CALL timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L749] COND TRUE \read(pumpRunning) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L751] CALL lowerWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L53] COND TRUE waterLevel > 0 [L54] waterLevel = waterLevel - 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L751] RET lowerWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L756] COND TRUE \read(systemActive) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L758] CALL processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L778] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L781] COND FALSE !(! pumpRunning) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L796] FCALL processEnvironment__wrappee__base() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L758] RET processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L764] CALL __utac_acc__Specification4_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L548] int tmp ; [L549] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L553] CALL, EXPR getWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L118] int retValue_acc ; [L121] retValue_acc = waterLevel [L122] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=0, systemActive=1, waterLevel=0] [L553] RET, EXPR getWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, getWaterLevel()=0, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L553] tmp = getWaterLevel() [L555] COND TRUE tmp == 0 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=0] [L557] CALL, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L848] int retValue_acc ; [L851] retValue_acc = pumpRunning [L852] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=0] [L557] RET, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, isPumpRunning()=1, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=0] [L557] tmp___0 = isPumpRunning() [L559] COND TRUE \read(tmp___0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, tmp___0=1, waterLevel=0] [L561] CALL __automaton_fail() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L924] __VERIFIER_error() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 226 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 9.4s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 3.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1258 SDtfs, 874 SDslu, 2203 SDs, 0 SdLazy, 1854 SolverSat, 441 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 925 GetRequests, 867 SyntacticMatches, 6 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=532occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 198 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 943 NumberOfCodeBlocks, 943 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 897 ConstructedInterpolants, 0 QuantifiedInterpolants, 168467 SizeOfPredicates, 34 NumberOfNonLiveVariables, 6679 ConjunctsInSsa, 93 ConjunctsInUnsatCore, 10 InterpolantComputations, 8 PerfectInterpolantSequences, 112/125 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...