/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product64.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 11:59:09,969 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 11:59:09,972 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 11:59:10,013 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 11:59:10,013 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 11:59:10,023 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 11:59:10,025 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 11:59:10,029 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 11:59:10,031 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 11:59:10,034 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 11:59:10,035 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 11:59:10,036 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 11:59:10,036 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 11:59:10,039 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 11:59:10,041 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 11:59:10,043 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 11:59:10,044 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 11:59:10,045 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 11:59:10,047 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 11:59:10,055 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 11:59:10,057 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 11:59:10,058 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 11:59:10,060 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 11:59:10,061 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 11:59:10,073 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 11:59:10,073 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 11:59:10,073 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 11:59:10,074 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 11:59:10,075 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 11:59:10,084 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 11:59:10,084 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 11:59:10,085 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 11:59:10,086 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 11:59:10,088 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 11:59:10,089 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 11:59:10,089 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 11:59:10,090 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 11:59:10,091 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 11:59:10,091 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 11:59:10,092 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 11:59:10,093 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 11:59:10,094 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 11:59:10,129 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 11:59:10,129 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 11:59:10,131 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 11:59:10,131 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 11:59:10,131 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 11:59:10,131 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 11:59:10,132 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 11:59:10,132 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 11:59:10,132 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 11:59:10,132 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 11:59:10,132 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 11:59:10,132 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 11:59:10,133 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 11:59:10,133 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 11:59:10,133 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 11:59:10,133 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 11:59:10,133 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 11:59:10,134 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 11:59:10,134 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 11:59:10,134 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 11:59:10,134 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 11:59:10,134 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 11:59:10,135 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 11:59:10,135 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 11:59:10,135 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 11:59:10,135 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 11:59:10,135 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 11:59:10,135 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 11:59:10,136 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 11:59:10,136 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; [2020-08-18 11:59:10,472 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 11:59:10,487 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 11:59:10,490 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 11:59:10,492 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 11:59:10,493 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 11:59:10,494 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product64.cil.c [2020-08-18 11:59:10,572 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fb16b031f/744a31f1f5ce4696884a255fd52e1d68/FLAG483afcc05 [2020-08-18 11:59:11,087 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 11:59:11,087 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product64.cil.c [2020-08-18 11:59:11,101 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fb16b031f/744a31f1f5ce4696884a255fd52e1d68/FLAG483afcc05 [2020-08-18 11:59:11,392 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fb16b031f/744a31f1f5ce4696884a255fd52e1d68 [2020-08-18 11:59:11,403 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 11:59:11,405 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 11:59:11,409 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 11:59:11,409 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 11:59:11,413 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 11:59:11,413 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:59:11" (1/1) ... [2020-08-18 11:59:11,417 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11967da3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:59:11, skipping insertion in model container [2020-08-18 11:59:11,417 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:59:11" (1/1) ... [2020-08-18 11:59:11,426 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 11:59:11,489 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 11:59:11,879 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 11:59:11,893 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 11:59:12,085 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 11:59:12,125 INFO L208 MainTranslator]: Completed translation [2020-08-18 11:59:12,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:59:12 WrapperNode [2020-08-18 11:59:12,126 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 11:59:12,127 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 11:59:12,127 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 11:59:12,127 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 11:59:12,140 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:59:12" (1/1) ... [2020-08-18 11:59:12,140 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:59:12" (1/1) ... [2020-08-18 11:59:12,161 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:59:12" (1/1) ... [2020-08-18 11:59:12,161 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:59:12" (1/1) ... [2020-08-18 11:59:12,192 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:59:12" (1/1) ... [2020-08-18 11:59:12,206 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:59:12" (1/1) ... [2020-08-18 11:59:12,211 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:59:12" (1/1) ... [2020-08-18 11:59:12,219 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 11:59:12,220 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 11:59:12,220 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 11:59:12,220 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 11:59:12,221 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:59:12" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 11:59:12,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 11:59:12,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 11:59:12,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 11:59:12,279 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 11:59:12,279 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 11:59:12,279 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 11:59:12,280 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 11:59:12,280 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 11:59:12,280 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 11:59:12,280 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 11:59:12,280 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-18 11:59:12,281 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 11:59:12,281 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-18 11:59:12,281 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 11:59:12,281 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 11:59:12,281 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 11:59:12,282 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 11:59:12,282 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 11:59:12,282 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 11:59:12,282 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-18 11:59:12,282 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-18 11:59:12,282 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 11:59:12,283 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 11:59:12,283 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 11:59:12,283 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 11:59:12,283 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 11:59:12,283 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 11:59:12,284 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 11:59:12,284 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 11:59:12,284 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 11:59:12,284 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-18 11:59:12,285 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 11:59:12,285 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 11:59:12,285 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 11:59:12,285 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 11:59:12,285 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 11:59:12,285 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 11:59:12,285 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 11:59:12,286 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 11:59:12,286 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 11:59:12,286 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 11:59:12,286 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 11:59:12,286 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 11:59:12,286 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-18 11:59:12,287 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 11:59:12,287 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 11:59:12,287 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 11:59:12,287 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 11:59:12,287 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 11:59:12,287 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 11:59:12,287 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 11:59:12,288 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 11:59:12,288 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 11:59:12,288 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 11:59:12,288 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 11:59:12,288 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-18 11:59:12,288 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 11:59:12,288 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 11:59:12,289 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 11:59:12,289 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 11:59:12,289 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 11:59:12,289 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-18 11:59:12,289 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 11:59:12,289 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-18 11:59:12,289 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 11:59:12,290 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 11:59:12,290 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 11:59:12,290 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 11:59:12,290 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-18 11:59:12,290 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-18 11:59:12,290 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 11:59:12,291 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-18 11:59:12,291 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 11:59:12,291 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 11:59:12,291 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 11:59:12,291 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 11:59:12,291 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 11:59:12,292 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 11:59:12,292 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 11:59:12,292 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 11:59:12,292 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 11:59:12,292 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 11:59:12,292 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 11:59:12,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 11:59:12,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 11:59:12,293 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 11:59:12,293 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 11:59:12,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 11:59:12,293 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 11:59:12,293 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 11:59:12,294 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 11:59:12,294 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 11:59:12,294 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 11:59:12,294 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 11:59:12,294 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 11:59:12,294 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 11:59:12,294 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 11:59:12,294 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 11:59:12,295 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 11:59:12,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 11:59:12,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 11:59:12,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 11:59:13,401 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 11:59:13,401 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 11:59:13,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:59:13 BoogieIcfgContainer [2020-08-18 11:59:13,407 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 11:59:13,408 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 11:59:13,408 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 11:59:13,411 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 11:59:13,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 11:59:11" (1/3) ... [2020-08-18 11:59:13,413 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eb68920 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:59:13, skipping insertion in model container [2020-08-18 11:59:13,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:59:12" (2/3) ... [2020-08-18 11:59:13,413 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eb68920 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:59:13, skipping insertion in model container [2020-08-18 11:59:13,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:59:13" (3/3) ... [2020-08-18 11:59:13,415 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product64.cil.c [2020-08-18 11:59:13,425 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 11:59:13,433 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 11:59:13,448 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 11:59:13,473 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 11:59:13,473 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 11:59:13,473 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 11:59:13,473 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 11:59:13,474 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 11:59:13,474 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 11:59:13,474 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 11:59:13,474 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 11:59:13,497 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states. [2020-08-18 11:59:13,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 11:59:13,509 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:59:13,510 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:59:13,511 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:59:13,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:59:13,517 INFO L82 PathProgramCache]: Analyzing trace with hash 1153750625, now seen corresponding path program 1 times [2020-08-18 11:59:13,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:59:13,525 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [60604256] [2020-08-18 11:59:13,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:59:13,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:14,214 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:59:14,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:59:14,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:14,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:59:14,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:14,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:59:14,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:14,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:59:14,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:14,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:59:14,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:14,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 11:59:14,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:14,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 11:59:14,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:14,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 11:59:14,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:14,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 11:59:14,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [60604256] [2020-08-18 11:59:14,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:59:14,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 11:59:14,311 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108604885] [2020-08-18 11:59:14,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 11:59:14,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:59:14,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 11:59:14,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 11:59:14,334 INFO L87 Difference]: Start difference. First operand 209 states. Second operand 3 states. [2020-08-18 11:59:15,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:59:15,863 INFO L93 Difference]: Finished difference Result 380 states and 494 transitions. [2020-08-18 11:59:15,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 11:59:15,866 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-18 11:59:15,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:59:15,893 INFO L225 Difference]: With dead ends: 380 [2020-08-18 11:59:15,893 INFO L226 Difference]: Without dead ends: 205 [2020-08-18 11:59:15,903 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 11:59:15,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-08-18 11:59:15,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 166. [2020-08-18 11:59:16,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-08-18 11:59:16,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 198 transitions. [2020-08-18 11:59:16,005 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 198 transitions. Word has length 52 [2020-08-18 11:59:16,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:59:16,006 INFO L479 AbstractCegarLoop]: Abstraction has 166 states and 198 transitions. [2020-08-18 11:59:16,006 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 11:59:16,006 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 198 transitions. [2020-08-18 11:59:16,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-18 11:59:16,010 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:59:16,010 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:59:16,011 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 11:59:16,011 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:59:16,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:59:16,011 INFO L82 PathProgramCache]: Analyzing trace with hash -2119837363, now seen corresponding path program 1 times [2020-08-18 11:59:16,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:59:16,012 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2015487445] [2020-08-18 11:59:16,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:59:16,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:16,407 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:59:16,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:59:16,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:16,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:59:16,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:16,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:59:16,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:16,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:59:16,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:16,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:59:16,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:16,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 11:59:16,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:16,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 11:59:16,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:16,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 11:59:16,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:16,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 11:59:16,480 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2015487445] [2020-08-18 11:59:16,481 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:59:16,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 11:59:16,481 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904694520] [2020-08-18 11:59:16,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 11:59:16,484 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:59:16,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 11:59:16,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 11:59:16,485 INFO L87 Difference]: Start difference. First operand 166 states and 198 transitions. Second operand 4 states. [2020-08-18 11:59:16,944 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:59:18,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:59:18,053 INFO L93 Difference]: Finished difference Result 303 states and 373 transitions. [2020-08-18 11:59:18,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 11:59:18,055 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-18 11:59:18,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:59:18,058 INFO L225 Difference]: With dead ends: 303 [2020-08-18 11:59:18,059 INFO L226 Difference]: Without dead ends: 189 [2020-08-18 11:59:18,060 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 11:59:18,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-08-18 11:59:18,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 157. [2020-08-18 11:59:18,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-08-18 11:59:18,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 186 transitions. [2020-08-18 11:59:18,106 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 186 transitions. Word has length 53 [2020-08-18 11:59:18,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:59:18,106 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 186 transitions. [2020-08-18 11:59:18,106 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 11:59:18,106 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 186 transitions. [2020-08-18 11:59:18,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-18 11:59:18,109 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:59:18,109 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:59:18,110 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 11:59:18,110 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:59:18,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:59:18,110 INFO L82 PathProgramCache]: Analyzing trace with hash -1174645714, now seen corresponding path program 1 times [2020-08-18 11:59:18,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:59:18,111 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [577052074] [2020-08-18 11:59:18,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:59:18,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:18,448 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:59:18,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:59:18,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:18,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:59:18,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:18,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:59:18,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:18,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:59:18,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:18,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:59:18,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:18,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 11:59:18,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:18,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 11:59:18,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:18,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 11:59:18,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:18,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 11:59:18,571 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [577052074] [2020-08-18 11:59:18,571 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:59:18,571 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 11:59:18,572 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060174456] [2020-08-18 11:59:18,572 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 11:59:18,581 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:59:18,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 11:59:18,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 11:59:18,583 INFO L87 Difference]: Start difference. First operand 157 states and 186 transitions. Second operand 8 states. [2020-08-18 11:59:18,941 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:59:19,229 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:59:19,494 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:59:19,720 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:59:20,420 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:59:22,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:59:22,923 INFO L93 Difference]: Finished difference Result 540 states and 672 transitions. [2020-08-18 11:59:22,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 11:59:22,924 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-08-18 11:59:22,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:59:22,936 INFO L225 Difference]: With dead ends: 540 [2020-08-18 11:59:22,936 INFO L226 Difference]: Without dead ends: 407 [2020-08-18 11:59:22,939 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-18 11:59:22,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2020-08-18 11:59:23,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 334. [2020-08-18 11:59:23,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 334 states. [2020-08-18 11:59:23,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 407 transitions. [2020-08-18 11:59:23,091 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 407 transitions. Word has length 58 [2020-08-18 11:59:23,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:59:23,092 INFO L479 AbstractCegarLoop]: Abstraction has 334 states and 407 transitions. [2020-08-18 11:59:23,092 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 11:59:23,092 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 407 transitions. [2020-08-18 11:59:23,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-08-18 11:59:23,100 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:59:23,100 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:59:23,100 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 11:59:23,101 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:59:23,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:59:23,101 INFO L82 PathProgramCache]: Analyzing trace with hash 1545438199, now seen corresponding path program 1 times [2020-08-18 11:59:23,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:59:23,102 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2121083805] [2020-08-18 11:59:23,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:59:23,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:23,492 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:59:23,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:59:23,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:23,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:59:23,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:23,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:59:23,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:23,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:59:23,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:23,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:59:23,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:23,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 11:59:23,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:23,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 11:59:23,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:23,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 11:59:23,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:23,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 11:59:23,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:59:23,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 11:59:23,573 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2121083805] [2020-08-18 11:59:23,573 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:59:23,573 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 11:59:23,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067156299] [2020-08-18 11:59:23,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 11:59:23,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:59:23,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 11:59:23,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 11:59:23,575 INFO L87 Difference]: Start difference. First operand 334 states and 407 transitions. Second operand 8 states. [2020-08-18 11:59:24,007 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:59:25,447 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:59:25,847 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:59:26,195 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:59:26,489 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:59:27,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:59:27,752 INFO L93 Difference]: Finished difference Result 1041 states and 1365 transitions. [2020-08-18 11:59:27,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 11:59:27,753 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-08-18 11:59:27,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:59:27,759 INFO L225 Difference]: With dead ends: 1041 [2020-08-18 11:59:27,759 INFO L226 Difference]: Without dead ends: 731 [2020-08-18 11:59:27,761 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-18 11:59:27,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2020-08-18 11:59:27,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 653. [2020-08-18 11:59:27,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 653 states. [2020-08-18 11:59:27,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 809 transitions. [2020-08-18 11:59:27,929 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 809 transitions. Word has length 63 [2020-08-18 11:59:27,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:59:27,930 INFO L479 AbstractCegarLoop]: Abstraction has 653 states and 809 transitions. [2020-08-18 11:59:27,930 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 11:59:27,930 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 809 transitions. [2020-08-18 11:59:27,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-18 11:59:27,934 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:59:27,934 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:59:27,934 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 11:59:27,935 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:59:27,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:59:27,935 INFO L82 PathProgramCache]: Analyzing trace with hash -1461698211, now seen corresponding path program 1 times [2020-08-18 11:59:27,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:59:27,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1031449281] [2020-08-18 11:59:27,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:59:27,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 11:59:27,991 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 11:59:27,992 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 11:59:27,996 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 11:59:28,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 11:59:28 BoogieIcfgContainer [2020-08-18 11:59:28,018 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 11:59:28,020 INFO L168 Benchmark]: Toolchain (without parser) took 16615.39 ms. Allocated memory was 147.8 MB in the beginning and 524.8 MB in the end (delta: 377.0 MB). Free memory was 102.5 MB in the beginning and 434.5 MB in the end (delta: -332.0 MB). Peak memory consumption was 45.0 MB. Max. memory is 7.1 GB. [2020-08-18 11:59:28,021 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 147.8 MB. Free memory was 122.3 MB in the beginning and 122.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 11:59:28,022 INFO L168 Benchmark]: CACSL2BoogieTranslator took 717.70 ms. Allocated memory was 147.8 MB in the beginning and 205.0 MB in the end (delta: 57.1 MB). Free memory was 102.3 MB in the beginning and 171.9 MB in the end (delta: -69.7 MB). Peak memory consumption was 26.6 MB. Max. memory is 7.1 GB. [2020-08-18 11:59:28,023 INFO L168 Benchmark]: Boogie Preprocessor took 92.50 ms. Allocated memory is still 205.0 MB. Free memory was 171.9 MB in the beginning and 167.2 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB. [2020-08-18 11:59:28,024 INFO L168 Benchmark]: RCFGBuilder took 1187.23 ms. Allocated memory was 205.0 MB in the beginning and 234.9 MB in the end (delta: 29.9 MB). Free memory was 167.2 MB in the beginning and 187.8 MB in the end (delta: -20.5 MB). Peak memory consumption was 79.3 MB. Max. memory is 7.1 GB. [2020-08-18 11:59:28,025 INFO L168 Benchmark]: TraceAbstraction took 14610.35 ms. Allocated memory was 234.9 MB in the beginning and 524.8 MB in the end (delta: 289.9 MB). Free memory was 187.8 MB in the beginning and 434.5 MB in the end (delta: -246.7 MB). Peak memory consumption was 43.2 MB. Max. memory is 7.1 GB. [2020-08-18 11:59:28,028 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 147.8 MB. Free memory was 122.3 MB in the beginning and 122.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 717.70 ms. Allocated memory was 147.8 MB in the beginning and 205.0 MB in the end (delta: 57.1 MB). Free memory was 102.3 MB in the beginning and 171.9 MB in the end (delta: -69.7 MB). Peak memory consumption was 26.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 92.50 ms. Allocated memory is still 205.0 MB. Free memory was 171.9 MB in the beginning and 167.2 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1187.23 ms. Allocated memory was 205.0 MB in the beginning and 234.9 MB in the end (delta: 29.9 MB). Free memory was 167.2 MB in the beginning and 187.8 MB in the end (delta: -20.5 MB). Peak memory consumption was 79.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 14610.35 ms. Allocated memory was 234.9 MB in the beginning and 524.8 MB in the end (delta: 289.9 MB). Free memory was 187.8 MB in the beginning and 434.5 MB in the end (delta: -246.7 MB). Peak memory consumption was 43.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 996]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L90] int pumpRunning = 0; [L91] int systemActive = 1; [L427] int waterLevel = 1; [L428] int methaneLevelCritical = 0; [L699] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L896] int cleanupTimeShifts = 4; [L969] int retValue_acc ; [L970] int tmp ; [L974] FCALL select_helpers() [L975] FCALL select_features() [L976] CALL, EXPR valid_product() [L69] int retValue_acc ; [L72] retValue_acc = 1 [L73] return (retValue_acc); [L976] RET, EXPR valid_product() [L976] tmp = valid_product() [L978] COND TRUE \read(tmp) [L980] FCALL setup() [L981] CALL runTest() [L963] CALL test() [L358] int splverifierCounter ; [L359] int tmp ; [L360] int tmp___0 ; [L361] int tmp___1 ; [L362] int tmp___2 ; [L365] splverifierCounter = 0 [L367] COND TRUE 1 [L369] COND TRUE splverifierCounter < 4 [L375] tmp = __VERIFIER_nondet_int() [L377] COND TRUE \read(tmp) [L379] CALL waterRise() [L445] COND TRUE waterLevel < 2 [L446] waterLevel = waterLevel + 1 [L379] RET waterRise() [L385] tmp___0 = __VERIFIER_nondet_int() [L387] COND FALSE !(\read(tmp___0)) [L395] tmp___2 = __VERIFIER_nondet_int() [L397] COND FALSE !(\read(tmp___2)) [L403] tmp___1 = __VERIFIER_nondet_int() [L405] COND TRUE \read(tmp___1) [L407] CALL stopSystem() [L334] COND FALSE !(\read(pumpRunning)) [L341] systemActive = 0 [L407] RET stopSystem() [L414] CALL timeShift() [L98] COND FALSE !(\read(pumpRunning)) [L105] COND FALSE !(\read(systemActive)) [L113] CALL __utac_acc__Specification3_spec__1() [L1002] int tmp ; [L1003] int tmp___0 ; [L1004] int tmp___1 ; [L1008] CALL, EXPR isMethaneLevelCritical() [L466] int retValue_acc ; [L469] retValue_acc = methaneLevelCritical [L470] return (retValue_acc); [L1008] RET, EXPR isMethaneLevelCritical() [L1008] tmp = isMethaneLevelCritical() [L1010] COND FALSE !(\read(tmp)) [L1014] CALL, EXPR getWaterLevel() [L498] int retValue_acc ; [L501] retValue_acc = waterLevel [L502] return (retValue_acc); [L1014] RET, EXPR getWaterLevel() [L1014] tmp___0 = getWaterLevel() [L1016] COND TRUE tmp___0 == 2 [L1018] CALL, EXPR isPumpRunning() [L248] int retValue_acc ; [L251] retValue_acc = pumpRunning [L252] return (retValue_acc); [L1018] RET, EXPR isPumpRunning() [L1018] tmp___1 = isPumpRunning() [L1020] COND FALSE !(\read(tmp___1)) [L1024] CALL __automaton_fail() [L996] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 44 procedures, 265 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 14.5s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 11.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 629 SDtfs, 1054 SDslu, 414 SDs, 0 SdLazy, 2432 SolverSat, 646 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 102 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 3.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=653occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 4 MinimizatonAttempts, 222 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 293 NumberOfCodeBlocks, 293 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 222 ConstructedInterpolants, 0 QuantifiedInterpolants, 62058 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...