/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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product48.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 17:10:43,133 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 17:10:43,136 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 17:10:43,175 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 17:10:43,175 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 17:10:43,188 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 17:10:43,189 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 17:10:43,192 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 17:10:43,197 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 17:10:43,198 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 17:10:43,200 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 17:10:43,202 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 17:10:43,203 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 17:10:43,207 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 17:10:43,209 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 17:10:43,211 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 17:10:43,213 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 17:10:43,214 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 17:10:43,216 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 17:10:43,223 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 17:10:43,226 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 17:10:43,228 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 17:10:43,229 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 17:10:43,230 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 17:10:43,233 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 17:10:43,234 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 17:10:43,234 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 17:10:43,237 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 17:10:43,238 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 17:10:43,239 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 17:10:43,240 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 17:10:43,241 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 17:10:43,241 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 17:10:43,242 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 17:10:43,243 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 17:10:43,244 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 17:10:43,244 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 17:10:43,245 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 17:10:43,245 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 17:10:43,246 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 17:10:43,247 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 17:10:43,248 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 [2020-08-21 17:10:43,289 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 17:10:43,289 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 17:10:43,291 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 17:10:43,292 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 17:10:43,292 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 17:10:43,292 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 17:10:43,292 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 17:10:43,293 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 17:10:43,293 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 17:10:43,293 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 17:10:43,294 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 17:10:43,294 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 17:10:43,295 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 17:10:43,295 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 17:10:43,295 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 17:10:43,295 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 17:10:43,296 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 17:10:43,296 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 17:10:43,296 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 17:10:43,296 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 17:10:43,296 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 17:10:43,297 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 17:10:43,297 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 17:10:43,297 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 17:10:43,297 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 17:10:43,297 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 17:10:43,298 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 17:10:43,298 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 17:10:43,298 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 17:10:43,298 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=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; [2020-08-21 17:10:43,587 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 17:10:43,600 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 17:10:43,604 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 17:10:43,605 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 17:10:43,606 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 17:10:43,606 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product48.cil.c [2020-08-21 17:10:43,683 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ecad0712d/cd220116fa0a4c62b621c2d864dd1721/FLAG3f9b4bfb6 [2020-08-21 17:10:44,299 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 17:10:44,299 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product48.cil.c [2020-08-21 17:10:44,313 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ecad0712d/cd220116fa0a4c62b621c2d864dd1721/FLAG3f9b4bfb6 [2020-08-21 17:10:44,596 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ecad0712d/cd220116fa0a4c62b621c2d864dd1721 [2020-08-21 17:10:44,605 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 17:10:44,606 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 17:10:44,607 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 17:10:44,607 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 17:10:44,611 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 17:10:44,612 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:10:44" (1/1) ... [2020-08-21 17:10:44,615 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@351123c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:10:44, skipping insertion in model container [2020-08-21 17:10:44,616 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:10:44" (1/1) ... [2020-08-21 17:10:44,624 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 17:10:44,679 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 17:10:45,132 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 17:10:45,145 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 17:10:45,248 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 17:10:45,312 INFO L208 MainTranslator]: Completed translation [2020-08-21 17:10:45,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:10:45 WrapperNode [2020-08-21 17:10:45,313 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 17:10:45,314 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 17:10:45,314 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 17:10:45,314 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 17:10:45,325 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:10:45" (1/1) ... [2020-08-21 17:10:45,325 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:10:45" (1/1) ... [2020-08-21 17:10:45,344 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:10:45" (1/1) ... [2020-08-21 17:10:45,345 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:10:45" (1/1) ... [2020-08-21 17:10:45,381 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:10:45" (1/1) ... [2020-08-21 17:10:45,401 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:10:45" (1/1) ... [2020-08-21 17:10:45,406 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:10:45" (1/1) ... [2020-08-21 17:10:45,430 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 17:10:45,430 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 17:10:45,430 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 17:10:45,430 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 17:10:45,434 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:10:45" (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 [2020-08-21 17:10:45,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 17:10:45,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 17:10:45,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 17:10:45,510 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 17:10:45,510 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 17:10:45,510 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 17:10:45,510 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 17:10:45,510 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 17:10:45,511 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-21 17:10:45,511 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 17:10:45,511 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 17:10:45,511 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 17:10:45,511 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 17:10:45,512 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 17:10:45,512 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 17:10:45,512 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 17:10:45,512 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 17:10:45,512 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 17:10:45,513 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-21 17:10:45,513 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 17:10:45,513 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-21 17:10:45,513 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 17:10:45,514 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 17:10:45,514 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 17:10:45,514 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 17:10:45,514 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 17:10:45,514 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 17:10:45,515 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-21 17:10:45,515 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 17:10:45,515 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 17:10:45,515 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 17:10:45,515 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 17:10:45,515 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 17:10:45,516 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 17:10:45,516 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 17:10:45,516 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 17:10:45,516 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 17:10:45,516 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 17:10:45,517 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 17:10:45,517 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 17:10:45,517 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 17:10:45,517 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 17:10:45,517 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 17:10:45,517 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 17:10:45,518 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 17:10:45,518 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 17:10:45,518 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 17:10:45,518 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 17:10:45,518 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 17:10:45,518 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 17:10:45,519 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 17:10:45,519 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 17:10:45,519 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-21 17:10:45,519 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 17:10:45,519 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 17:10:45,519 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 17:10:45,520 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 17:10:45,520 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 17:10:45,520 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 17:10:45,520 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 17:10:45,520 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 17:10:45,520 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 17:10:45,520 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 17:10:45,521 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-21 17:10:45,521 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 17:10:45,521 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 17:10:45,521 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 17:10:45,521 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 17:10:45,521 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-21 17:10:45,521 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 17:10:45,522 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-21 17:10:45,522 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 17:10:45,522 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 17:10:45,522 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 17:10:45,522 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 17:10:45,522 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 17:10:45,523 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 17:10:45,523 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 17:10:45,523 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 17:10:45,523 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 17:10:45,523 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 17:10:45,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 17:10:45,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 17:10:45,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 17:10:45,524 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 17:10:45,524 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 17:10:45,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 17:10:45,524 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 17:10:45,524 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 17:10:45,525 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 17:10:45,525 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 17:10:45,525 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 17:10:45,525 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 17:10:45,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 17:10:45,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 17:10:45,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 17:10:46,676 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 17:10:46,677 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 17:10:46,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:10:46 BoogieIcfgContainer [2020-08-21 17:10:46,687 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 17:10:46,689 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 17:10:46,689 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 17:10:46,692 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 17:10:46,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 05:10:44" (1/3) ... [2020-08-21 17:10:46,694 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5beb2819 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:10:46, skipping insertion in model container [2020-08-21 17:10:46,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:10:45" (2/3) ... [2020-08-21 17:10:46,695 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5beb2819 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:10:46, skipping insertion in model container [2020-08-21 17:10:46,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:10:46" (3/3) ... [2020-08-21 17:10:46,697 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product48.cil.c [2020-08-21 17:10:46,708 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 17:10:46,718 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 17:10:46,734 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 17:10:46,767 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 17:10:46,768 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 17:10:46,768 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 17:10:46,768 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 17:10:46,768 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 17:10:46,769 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 17:10:46,769 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 17:10:46,770 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 17:10:46,802 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states. [2020-08-21 17:10:46,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 17:10:46,821 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:10:46,824 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] [2020-08-21 17:10:46,825 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:10:46,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:10:46,832 INFO L82 PathProgramCache]: Analyzing trace with hash -1986683117, now seen corresponding path program 1 times [2020-08-21 17:10:46,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:10:46,841 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [647878372] [2020-08-21 17:10:46,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:10:47,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:47,597 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:10:47,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:10:47,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:47,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:10:47,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:47,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:10:47,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:47,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:10:47,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:47,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:10:47,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:47,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 17:10:47,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:47,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 17:10:47,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:47,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 17:10:47,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:47,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:10:47,739 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [647878372] [2020-08-21 17:10:47,742 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:10:47,742 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 17:10:47,743 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22712469] [2020-08-21 17:10:47,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 17:10:47,751 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:10:47,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 17:10:47,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 17:10:47,770 INFO L87 Difference]: Start difference. First operand 189 states. Second operand 3 states. [2020-08-21 17:10:49,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:10:49,068 INFO L93 Difference]: Finished difference Result 338 states and 441 transitions. [2020-08-21 17:10:49,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 17:10:49,071 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-21 17:10:49,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:10:49,087 INFO L225 Difference]: With dead ends: 338 [2020-08-21 17:10:49,088 INFO L226 Difference]: Without dead ends: 183 [2020-08-21 17:10:49,093 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 17:10:49,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-08-21 17:10:49,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 146. [2020-08-21 17:10:49,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-08-21 17:10:49,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 173 transitions. [2020-08-21 17:10:49,211 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 173 transitions. Word has length 52 [2020-08-21 17:10:49,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:10:49,211 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 173 transitions. [2020-08-21 17:10:49,212 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 17:10:49,212 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 173 transitions. [2020-08-21 17:10:49,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-21 17:10:49,216 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:10:49,217 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] [2020-08-21 17:10:49,217 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 17:10:49,217 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:10:49,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:10:49,218 INFO L82 PathProgramCache]: Analyzing trace with hash 1294331280, now seen corresponding path program 1 times [2020-08-21 17:10:49,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:10:49,218 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1372713315] [2020-08-21 17:10:49,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:10:49,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:49,549 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:10:49,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:10:49,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:49,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:10:49,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:49,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:10:49,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:49,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:10:49,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:49,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:10:49,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:49,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 17:10:49,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:49,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 17:10:49,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:49,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 17:10:49,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:49,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:10:49,598 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1372713315] [2020-08-21 17:10:49,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:10:49,599 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 17:10:49,599 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355833136] [2020-08-21 17:10:49,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 17:10:49,601 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:10:49,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 17:10:49,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 17:10:49,602 INFO L87 Difference]: Start difference. First operand 146 states and 173 transitions. Second operand 4 states. [2020-08-21 17:10:50,027 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:10:50,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:10:50,962 INFO L93 Difference]: Finished difference Result 261 states and 320 transitions. [2020-08-21 17:10:50,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 17:10:50,963 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-21 17:10:50,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:10:50,966 INFO L225 Difference]: With dead ends: 261 [2020-08-21 17:10:50,966 INFO L226 Difference]: Without dead ends: 167 [2020-08-21 17:10:50,968 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 [2020-08-21 17:10:50,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-08-21 17:10:51,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 137. [2020-08-21 17:10:51,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-08-21 17:10:51,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 161 transitions. [2020-08-21 17:10:51,009 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 161 transitions. Word has length 53 [2020-08-21 17:10:51,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:10:51,009 INFO L479 AbstractCegarLoop]: Abstraction has 137 states and 161 transitions. [2020-08-21 17:10:51,010 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 17:10:51,010 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 161 transitions. [2020-08-21 17:10:51,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-21 17:10:51,012 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:10:51,013 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] [2020-08-21 17:10:51,013 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 17:10:51,013 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:10:51,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:10:51,014 INFO L82 PathProgramCache]: Analyzing trace with hash 89991443, now seen corresponding path program 1 times [2020-08-21 17:10:51,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:10:51,014 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [314316224] [2020-08-21 17:10:51,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:10:51,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:51,362 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:10:51,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:10:51,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:51,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:10:51,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:51,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:10:51,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:51,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:10:51,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:51,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:10:51,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:51,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 17:10:51,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:51,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 17:10:51,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:51,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 17:10:51,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:51,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:10:51,486 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [314316224] [2020-08-21 17:10:51,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:10:51,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 17:10:51,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203818654] [2020-08-21 17:10:51,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 17:10:51,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:10:51,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 17:10:51,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 17:10:51,488 INFO L87 Difference]: Start difference. First operand 137 states and 161 transitions. Second operand 8 states. [2020-08-21 17:10:51,847 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:10:52,147 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:10:52,383 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:10:52,634 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:10:53,323 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:10:55,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:10:55,382 INFO L93 Difference]: Finished difference Result 476 states and 591 transitions. [2020-08-21 17:10:55,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 17:10:55,383 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-08-21 17:10:55,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:10:55,387 INFO L225 Difference]: With dead ends: 476 [2020-08-21 17:10:55,387 INFO L226 Difference]: Without dead ends: 363 [2020-08-21 17:10:55,389 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-21 17:10:55,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2020-08-21 17:10:55,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 294. [2020-08-21 17:10:55,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-08-21 17:10:55,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 357 transitions. [2020-08-21 17:10:55,481 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 357 transitions. Word has length 58 [2020-08-21 17:10:55,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:10:55,482 INFO L479 AbstractCegarLoop]: Abstraction has 294 states and 357 transitions. [2020-08-21 17:10:55,482 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 17:10:55,482 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 357 transitions. [2020-08-21 17:10:55,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-08-21 17:10:55,485 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:10:55,485 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] [2020-08-21 17:10:55,486 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 17:10:55,486 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:10:55,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:10:55,486 INFO L82 PathProgramCache]: Analyzing trace with hash -1771452602, now seen corresponding path program 1 times [2020-08-21 17:10:55,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:10:55,487 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [342243490] [2020-08-21 17:10:55,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:10:55,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:55,775 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:10:55,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:10:55,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:55,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:10:55,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:55,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:10:55,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:55,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:10:55,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:55,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:10:55,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:55,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 17:10:55,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:55,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 17:10:55,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:55,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 17:10:55,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:55,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-21 17:10:55,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:55,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:10:55,855 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [342243490] [2020-08-21 17:10:55,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:10:55,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 17:10:55,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603529440] [2020-08-21 17:10:55,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 17:10:55,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:10:55,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 17:10:55,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 17:10:55,857 INFO L87 Difference]: Start difference. First operand 294 states and 357 transitions. Second operand 8 states. [2020-08-21 17:10:56,303 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:10:57,656 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:10:57,997 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:10:58,256 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:10:58,487 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:10:59,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:10:59,471 INFO L93 Difference]: Finished difference Result 913 states and 1199 transitions. [2020-08-21 17:10:59,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 17:10:59,472 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-08-21 17:10:59,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:10:59,478 INFO L225 Difference]: With dead ends: 913 [2020-08-21 17:10:59,478 INFO L226 Difference]: Without dead ends: 643 [2020-08-21 17:10:59,480 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 [2020-08-21 17:10:59,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2020-08-21 17:10:59,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 569. [2020-08-21 17:10:59,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 569 states. [2020-08-21 17:10:59,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 703 transitions. [2020-08-21 17:10:59,604 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 703 transitions. Word has length 63 [2020-08-21 17:10:59,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:10:59,604 INFO L479 AbstractCegarLoop]: Abstraction has 569 states and 703 transitions. [2020-08-21 17:10:59,604 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 17:10:59,605 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 703 transitions. [2020-08-21 17:10:59,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-21 17:10:59,609 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:10:59,609 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] [2020-08-21 17:10:59,609 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 17:10:59,609 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:10:59,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:10:59,610 INFO L82 PathProgramCache]: Analyzing trace with hash 1282483756, now seen corresponding path program 1 times [2020-08-21 17:10:59,610 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:10:59,611 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [454724927] [2020-08-21 17:10:59,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:10:59,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 17:10:59,682 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 17:10:59,682 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 17:10:59,687 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 17:10:59,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 05:10:59 BoogieIcfgContainer [2020-08-21 17:10:59,710 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 17:10:59,712 INFO L168 Benchmark]: Toolchain (without parser) took 15106.16 ms. Allocated memory was 140.5 MB in the beginning and 470.8 MB in the end (delta: 330.3 MB). Free memory was 102.7 MB in the beginning and 223.6 MB in the end (delta: -121.0 MB). Peak memory consumption was 209.3 MB. Max. memory is 7.1 GB. [2020-08-21 17:10:59,713 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 17:10:59,714 INFO L168 Benchmark]: CACSL2BoogieTranslator took 706.52 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 102.5 MB in the beginning and 169.5 MB in the end (delta: -67.1 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. [2020-08-21 17:10:59,715 INFO L168 Benchmark]: Boogie Preprocessor took 115.77 ms. Allocated memory is still 203.4 MB. Free memory was 169.5 MB in the beginning and 165.6 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. [2020-08-21 17:10:59,716 INFO L168 Benchmark]: RCFGBuilder took 1256.62 ms. Allocated memory was 203.4 MB in the beginning and 234.9 MB in the end (delta: 31.5 MB). Free memory was 165.6 MB in the beginning and 190.4 MB in the end (delta: -24.8 MB). Peak memory consumption was 79.6 MB. Max. memory is 7.1 GB. [2020-08-21 17:10:59,717 INFO L168 Benchmark]: TraceAbstraction took 13021.65 ms. Allocated memory was 234.9 MB in the beginning and 470.8 MB in the end (delta: 235.9 MB). Free memory was 190.4 MB in the beginning and 223.6 MB in the end (delta: -33.2 MB). Peak memory consumption was 202.7 MB. Max. memory is 7.1 GB. [2020-08-21 17:10:59,720 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 706.52 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 102.5 MB in the beginning and 169.5 MB in the end (delta: -67.1 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 115.77 ms. Allocated memory is still 203.4 MB. Free memory was 169.5 MB in the beginning and 165.6 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1256.62 ms. Allocated memory was 203.4 MB in the beginning and 234.9 MB in the end (delta: 31.5 MB). Free memory was 165.6 MB in the beginning and 190.4 MB in the end (delta: -24.8 MB). Peak memory consumption was 79.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 13021.65 ms. Allocated memory was 234.9 MB in the beginning and 470.8 MB in the end (delta: 235.9 MB). Free memory was 190.4 MB in the beginning and 223.6 MB in the end (delta: -33.2 MB). Peak memory consumption was 202.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 44]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L129] int waterLevel = 1; [L130] int methaneLevelCritical = 0; [L229] int pumpRunning = 0; [L230] int systemActive = 1; [L447] int cleanupTimeShifts = 4; [L782] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L521] int retValue_acc ; [L522] int tmp ; [L526] FCALL select_helpers() [L527] FCALL select_features() [L528] CALL, EXPR valid_product() [L78] int retValue_acc ; [L81] retValue_acc = 1 [L82] return (retValue_acc); [L528] RET, EXPR valid_product() [L528] tmp = valid_product() [L530] COND TRUE \read(tmp) [L532] FCALL setup() [L533] CALL runTest() [L515] CALL test() [L545] int splverifierCounter ; [L546] int tmp ; [L547] int tmp___0 ; [L548] int tmp___1 ; [L549] int tmp___2 ; [L552] splverifierCounter = 0 [L554] COND TRUE 1 [L556] COND TRUE splverifierCounter < 4 [L562] tmp = __VERIFIER_nondet_int() [L564] COND TRUE \read(tmp) [L566] CALL waterRise() [L147] COND TRUE waterLevel < 2 [L148] waterLevel = waterLevel + 1 [L566] RET waterRise() [L572] tmp___0 = __VERIFIER_nondet_int() [L574] COND FALSE !(\read(tmp___0)) [L582] tmp___2 = __VERIFIER_nondet_int() [L584] COND FALSE !(\read(tmp___2)) [L590] tmp___1 = __VERIFIER_nondet_int() [L592] COND TRUE \read(tmp___1) [L594] CALL stopSystem() [L427] COND FALSE !(\read(pumpRunning)) [L434] systemActive = 0 [L594] RET stopSystem() [L601] CALL timeShift() [L236] COND FALSE !(\read(pumpRunning)) [L243] COND FALSE !(\read(systemActive)) [L251] CALL __utac_acc__Specification3_spec__1() [L91] int tmp ; [L92] int tmp___0 ; [L93] int tmp___1 ; [L97] CALL, EXPR isMethaneLevelCritical() [L168] int retValue_acc ; [L171] retValue_acc = methaneLevelCritical [L172] return (retValue_acc); [L97] RET, EXPR isMethaneLevelCritical() [L97] tmp = isMethaneLevelCritical() [L99] COND FALSE !(\read(tmp)) [L103] CALL, EXPR getWaterLevel() [L200] int retValue_acc ; [L203] retValue_acc = waterLevel [L204] return (retValue_acc); [L103] RET, EXPR getWaterLevel() [L103] tmp___0 = getWaterLevel() [L105] COND TRUE tmp___0 == 2 [L107] CALL, EXPR isPumpRunning() [L360] int retValue_acc ; [L363] retValue_acc = pumpRunning [L364] return (retValue_acc); [L107] RET, EXPR isPumpRunning() [L107] tmp___1 = isPumpRunning() [L109] COND FALSE !(\read(tmp___1)) [L113] CALL __automaton_fail() [L44] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 41 procedures, 245 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 12.9s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 10.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 557 SDtfs, 890 SDslu, 392 SDs, 0 SdLazy, 2132 SolverSat, 558 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 102 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=569occurred 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: 0.3s AutomataMinimizationTime, 4 MinimizatonAttempts, 210 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.6s 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...