/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=NARROWEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product55.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 21:45:24,217 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 21:45:24,220 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 21:45:24,244 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 21:45:24,244 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 21:45:24,246 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 21:45:24,247 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 21:45:24,249 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 21:45:24,250 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 21:45:24,251 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 21:45:24,252 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 21:45:24,254 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 21:45:24,254 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 21:45:24,255 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 21:45:24,256 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 21:45:24,257 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 21:45:24,258 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 21:45:24,259 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 21:45:24,260 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 21:45:24,262 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 21:45:24,264 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 21:45:24,265 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 21:45:24,267 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 21:45:24,268 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 21:45:24,270 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 21:45:24,270 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 21:45:24,270 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 21:45:24,271 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 21:45:24,272 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 21:45:24,273 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 21:45:24,273 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 21:45:24,274 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 21:45:24,274 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 21:45:24,275 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 21:45:24,276 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 21:45:24,276 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 21:45:24,277 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 21:45:24,277 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 21:45:24,278 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 21:45:24,279 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 21:45:24,279 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 21:45:24,280 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 21:45:24,316 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 21:45:24,316 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 21:45:24,318 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 21:45:24,318 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 21:45:24,318 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 21:45:24,318 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 21:45:24,319 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 21:45:24,321 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 21:45:24,321 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 21:45:24,321 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 21:45:24,321 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 21:45:24,322 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 21:45:24,322 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 21:45:24,322 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 21:45:24,322 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 21:45:24,322 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 21:45:24,323 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 21:45:24,323 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 21:45:24,323 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 21:45:24,323 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 21:45:24,323 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 21:45:24,324 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 21:45:24,326 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 21:45:24,327 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 21:45:24,327 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 21:45:24,327 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 21:45:24,327 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 21:45:24,327 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 21:45:24,328 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 21:45:24,328 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=NARROWEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=NARROWEST; [2020-08-18 21:45:24,645 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 21:45:24,657 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 21:45:24,660 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 21:45:24,662 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 21:45:24,662 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 21:45:24,663 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product55.cil.c [2020-08-18 21:45:24,727 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/088be5eb9/f58c35fc702c46139d4c4ec69d5c95d4/FLAG677943edf [2020-08-18 21:45:25,267 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 21:45:25,270 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product55.cil.c [2020-08-18 21:45:25,289 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/088be5eb9/f58c35fc702c46139d4c4ec69d5c95d4/FLAG677943edf [2020-08-18 21:45:25,520 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/088be5eb9/f58c35fc702c46139d4c4ec69d5c95d4 [2020-08-18 21:45:25,533 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 21:45:25,535 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 21:45:25,537 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 21:45:25,537 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 21:45:25,541 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 21:45:25,542 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 09:45:25" (1/1) ... [2020-08-18 21:45:25,546 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69168dbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:45:25, skipping insertion in model container [2020-08-18 21:45:25,546 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 09:45:25" (1/1) ... [2020-08-18 21:45:25,555 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 21:45:25,618 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 21:45:25,954 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 21:45:26,058 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 21:45:26,180 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 21:45:26,219 INFO L208 MainTranslator]: Completed translation [2020-08-18 21:45:26,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:45:26 WrapperNode [2020-08-18 21:45:26,220 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 21:45:26,220 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 21:45:26,221 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 21:45:26,221 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 21:45:26,235 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:45:26" (1/1) ... [2020-08-18 21:45:26,236 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:45:26" (1/1) ... [2020-08-18 21:45:26,255 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:45:26" (1/1) ... [2020-08-18 21:45:26,256 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:45:26" (1/1) ... [2020-08-18 21:45:26,289 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:45:26" (1/1) ... [2020-08-18 21:45:26,299 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:45:26" (1/1) ... [2020-08-18 21:45:26,304 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:45:26" (1/1) ... [2020-08-18 21:45:26,311 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 21:45:26,311 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 21:45:26,312 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 21:45:26,312 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 21:45:26,313 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:45:26" (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 21:45:26,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 21:45:26,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 21:45:26,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 21:45:26,392 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 21:45:26,392 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 21:45:26,392 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 21:45:26,393 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 21:45:26,393 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 21:45:26,393 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 21:45:26,394 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 21:45:26,394 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 21:45:26,395 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 21:45:26,395 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 21:45:26,395 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 21:45:26,395 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-18 21:45:26,396 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 21:45:26,396 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 21:45:26,397 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 21:45:26,397 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 21:45:26,397 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 21:45:26,397 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 21:45:26,397 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 21:45:26,397 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 21:45:26,397 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 21:45:26,398 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 21:45:26,398 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 21:45:26,398 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 21:45:26,399 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 21:45:26,399 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 21:45:26,399 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 21:45:26,399 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-18 21:45:26,400 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 21:45:26,400 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 21:45:26,400 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 21:45:26,400 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 21:45:26,400 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 21:45:26,400 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 21:45:26,400 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 21:45:26,401 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-18 21:45:26,401 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-18 21:45:26,401 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-18 21:45:26,401 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 21:45:26,401 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 21:45:26,401 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 21:45:26,401 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 21:45:26,403 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 21:45:26,404 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 21:45:26,404 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 21:45:26,404 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 21:45:26,404 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 21:45:26,404 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 21:45:26,405 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 21:45:26,405 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 21:45:26,405 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 21:45:26,405 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 21:45:26,405 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 21:45:26,406 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-18 21:45:26,406 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 21:45:26,406 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 21:45:26,406 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 21:45:26,407 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 21:45:26,407 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 21:45:26,407 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 21:45:26,407 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 21:45:26,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 21:45:26,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 21:45:26,407 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 21:45:26,408 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 21:45:26,408 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 21:45:26,408 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 21:45:26,408 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 21:45:26,408 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 21:45:26,409 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 21:45:26,409 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 21:45:26,410 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 21:45:26,410 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 21:45:26,410 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 21:45:26,411 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 21:45:26,411 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 21:45:26,411 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 21:45:26,411 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 21:45:26,412 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 21:45:26,412 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 21:45:26,412 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 21:45:26,412 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 21:45:26,412 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 21:45:26,412 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-18 21:45:26,413 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-18 21:45:26,413 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 21:45:26,413 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 21:45:26,413 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 21:45:26,413 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 21:45:26,413 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-18 21:45:26,413 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-18 21:45:26,414 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 21:45:26,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 21:45:26,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 21:45:26,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 21:45:27,608 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 21:45:27,608 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 21:45:27,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 09:45:27 BoogieIcfgContainer [2020-08-18 21:45:27,620 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 21:45:27,622 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 21:45:27,622 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 21:45:27,625 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 21:45:27,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 09:45:25" (1/3) ... [2020-08-18 21:45:27,627 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bd31818 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 09:45:27, skipping insertion in model container [2020-08-18 21:45:27,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:45:26" (2/3) ... [2020-08-18 21:45:27,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bd31818 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 09:45:27, skipping insertion in model container [2020-08-18 21:45:27,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 09:45:27" (3/3) ... [2020-08-18 21:45:27,630 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product55.cil.c [2020-08-18 21:45:27,642 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 21:45:27,652 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 21:45:27,667 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 21:45:27,699 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 21:45:27,699 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 21:45:27,699 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 21:45:27,699 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 21:45:27,700 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 21:45:27,700 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 21:45:27,700 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 21:45:27,701 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 21:45:27,723 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states. [2020-08-18 21:45:27,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 21:45:27,735 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:45:27,737 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 21:45:27,737 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:45:27,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:45:27,744 INFO L82 PathProgramCache]: Analyzing trace with hash -1378211837, now seen corresponding path program 1 times [2020-08-18 21:45:27,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:45:27,751 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1599156725] [2020-08-18 21:45:27,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:45:28,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:45:28,517 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 21:45:28,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:45:28,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:45:28,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:45:28,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:45:28,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:45:28,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:45:28,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:45:28,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:45:28,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:45:28,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:45:28,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 21:45:28,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:45:28,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 21:45:28,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:45:28,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 21:45:28,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:45:28,623 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 21:45:28,625 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1599156725] [2020-08-18 21:45:28,627 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:45:28,627 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 21:45:28,628 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119783840] [2020-08-18 21:45:28,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 21:45:28,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:45:28,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 21:45:28,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 21:45:28,655 INFO L87 Difference]: Start difference. First operand 198 states. Second operand 3 states. [2020-08-18 21:45:29,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:45:29,969 INFO L93 Difference]: Finished difference Result 355 states and 464 transitions. [2020-08-18 21:45:29,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 21:45:29,971 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-18 21:45:29,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:45:29,986 INFO L225 Difference]: With dead ends: 355 [2020-08-18 21:45:29,986 INFO L226 Difference]: Without dead ends: 191 [2020-08-18 21:45:29,991 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 21:45:30,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-08-18 21:45:30,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 155. [2020-08-18 21:45:30,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-08-18 21:45:30,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 185 transitions. [2020-08-18 21:45:30,124 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 185 transitions. Word has length 52 [2020-08-18 21:45:30,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:45:30,124 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 185 transitions. [2020-08-18 21:45:30,124 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 21:45:30,125 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 185 transitions. [2020-08-18 21:45:30,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-18 21:45:30,129 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:45:30,129 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 21:45:30,129 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 21:45:30,130 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:45:30,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:45:30,130 INFO L82 PathProgramCache]: Analyzing trace with hash 866991252, now seen corresponding path program 1 times [2020-08-18 21:45:30,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:45:30,131 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [602709216] [2020-08-18 21:45:30,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:45:30,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:45:30,435 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 21:45:30,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:45:30,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:45:30,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:45:30,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:45:30,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:45:30,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:45:30,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:45:30,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:45:30,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:45:30,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:45:30,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 21:45:30,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:45:30,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 21:45:30,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:45:30,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 21:45:30,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:45:30,480 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 21:45:30,481 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [602709216] [2020-08-18 21:45:30,481 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:45:30,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 21:45:30,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12167209] [2020-08-18 21:45:30,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 21:45:30,484 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:45:30,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 21:45:30,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 21:45:30,484 INFO L87 Difference]: Start difference. First operand 155 states and 185 transitions. Second operand 4 states. [2020-08-18 21:45:30,881 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:45:31,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:45:31,943 INFO L93 Difference]: Finished difference Result 282 states and 347 transitions. [2020-08-18 21:45:31,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 21:45:31,944 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-18 21:45:31,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:45:31,947 INFO L225 Difference]: With dead ends: 282 [2020-08-18 21:45:31,947 INFO L226 Difference]: Without dead ends: 175 [2020-08-18 21:45:31,949 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 21:45:31,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-08-18 21:45:31,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 146. [2020-08-18 21:45:31,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-08-18 21:45:32,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 173 transitions. [2020-08-18 21:45:32,002 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 173 transitions. Word has length 53 [2020-08-18 21:45:32,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:45:32,003 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 173 transitions. [2020-08-18 21:45:32,003 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 21:45:32,003 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 173 transitions. [2020-08-18 21:45:32,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-18 21:45:32,006 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:45:32,006 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] [2020-08-18 21:45:32,006 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 21:45:32,006 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:45:32,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:45:32,007 INFO L82 PathProgramCache]: Analyzing trace with hash 295047202, now seen corresponding path program 1 times [2020-08-18 21:45:32,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:45:32,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [786552279] [2020-08-18 21:45:32,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:45:32,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:45:32,323 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 21:45:32,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:45:32,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:45:32,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:45:32,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:45:32,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:45:32,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:45:32,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:45:32,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:45:32,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:45:32,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:45:32,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 21:45:32,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:45:32,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 21:45:32,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:45:32,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 21:45:32,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:45:32,417 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 21:45:32,418 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [786552279] [2020-08-18 21:45:32,418 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:45:32,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 21:45:32,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365047215] [2020-08-18 21:45:32,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 21:45:32,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:45:32,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 21:45:32,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 21:45:32,420 INFO L87 Difference]: Start difference. First operand 146 states and 173 transitions. Second operand 8 states. [2020-08-18 21:45:32,782 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 21:45:33,111 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:45:33,363 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:45:33,605 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:45:34,343 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:45:36,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:45:36,670 INFO L93 Difference]: Finished difference Result 500 states and 624 transitions. [2020-08-18 21:45:36,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 21:45:36,672 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-18 21:45:36,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:45:36,677 INFO L225 Difference]: With dead ends: 500 [2020-08-18 21:45:36,678 INFO L226 Difference]: Without dead ends: 378 [2020-08-18 21:45:36,679 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 21:45:36,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2020-08-18 21:45:36,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 316. [2020-08-18 21:45:36,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2020-08-18 21:45:36,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 385 transitions. [2020-08-18 21:45:36,769 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 385 transitions. Word has length 57 [2020-08-18 21:45:36,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:45:36,770 INFO L479 AbstractCegarLoop]: Abstraction has 316 states and 385 transitions. [2020-08-18 21:45:36,770 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 21:45:36,770 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 385 transitions. [2020-08-18 21:45:36,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-08-18 21:45:36,773 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:45:36,773 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:45:36,774 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 21:45:36,774 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:45:36,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:45:36,774 INFO L82 PathProgramCache]: Analyzing trace with hash 557384966, now seen corresponding path program 1 times [2020-08-18 21:45:36,775 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:45:36,775 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [982223052] [2020-08-18 21:45:36,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:45:36,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:45:37,051 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 21:45:37,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:45:37,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:45:37,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:45:37,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:45:37,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:45:37,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:45:37,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:45:37,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:45:37,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:45:37,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:45:37,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 21:45:37,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:45:37,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 21:45:37,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:45:37,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 21:45:37,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:45:37,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 21:45:37,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:45:37,128 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 21:45:37,128 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [982223052] [2020-08-18 21:45:37,128 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:45:37,129 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 21:45:37,129 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478601188] [2020-08-18 21:45:37,129 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 21:45:37,130 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:45:37,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 21:45:37,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 21:45:37,130 INFO L87 Difference]: Start difference. First operand 316 states and 385 transitions. Second operand 8 states. [2020-08-18 21:45:37,470 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 21:45:38,882 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:45:39,278 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:45:39,556 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:45:39,827 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 21:45:40,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:45:40,819 INFO L93 Difference]: Finished difference Result 976 states and 1285 transitions. [2020-08-18 21:45:40,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 21:45:40,819 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-08-18 21:45:40,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:45:40,825 INFO L225 Difference]: With dead ends: 976 [2020-08-18 21:45:40,826 INFO L226 Difference]: Without dead ends: 684 [2020-08-18 21:45:40,828 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-18 21:45:40,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2020-08-18 21:45:40,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 613. [2020-08-18 21:45:40,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 613 states. [2020-08-18 21:45:40,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 761 transitions. [2020-08-18 21:45:40,977 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 761 transitions. Word has length 63 [2020-08-18 21:45:40,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:45:40,978 INFO L479 AbstractCegarLoop]: Abstraction has 613 states and 761 transitions. [2020-08-18 21:45:40,978 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 21:45:40,978 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 761 transitions. [2020-08-18 21:45:40,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-18 21:45:40,981 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:45:40,982 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 21:45:40,982 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 21:45:40,982 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:45:40,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:45:40,982 INFO L82 PathProgramCache]: Analyzing trace with hash 2018489452, now seen corresponding path program 1 times [2020-08-18 21:45:40,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:45:40,983 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1889755531] [2020-08-18 21:45:40,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:45:41,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 21:45:41,049 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 21:45:41,050 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 21:45:41,054 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 21:45:41,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 09:45:41 BoogieIcfgContainer [2020-08-18 21:45:41,076 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 21:45:41,078 INFO L168 Benchmark]: Toolchain (without parser) took 15543.23 ms. Allocated memory was 140.0 MB in the beginning and 470.8 MB in the end (delta: 330.8 MB). Free memory was 100.9 MB in the beginning and 243.1 MB in the end (delta: -142.2 MB). Peak memory consumption was 188.6 MB. Max. memory is 7.1 GB. [2020-08-18 21:45:41,079 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 140.0 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 21:45:41,080 INFO L168 Benchmark]: CACSL2BoogieTranslator took 682.98 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 100.7 MB in the beginning and 172.5 MB in the end (delta: -71.8 MB). Peak memory consumption was 28.4 MB. Max. memory is 7.1 GB. [2020-08-18 21:45:41,080 INFO L168 Benchmark]: Boogie Preprocessor took 90.62 ms. Allocated memory is still 203.9 MB. Free memory was 172.5 MB in the beginning and 168.5 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-08-18 21:45:41,081 INFO L168 Benchmark]: RCFGBuilder took 1308.32 ms. Allocated memory was 203.9 MB in the beginning and 237.5 MB in the end (delta: 33.6 MB). Free memory was 167.8 MB in the beginning and 195.1 MB in the end (delta: -27.3 MB). Peak memory consumption was 83.5 MB. Max. memory is 7.1 GB. [2020-08-18 21:45:41,082 INFO L168 Benchmark]: TraceAbstraction took 13454.48 ms. Allocated memory was 237.5 MB in the beginning and 470.8 MB in the end (delta: 233.3 MB). Free memory was 193.7 MB in the beginning and 243.1 MB in the end (delta: -49.5 MB). Peak memory consumption was 183.8 MB. Max. memory is 7.1 GB. [2020-08-18 21:45:41,086 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 140.0 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 682.98 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 100.7 MB in the beginning and 172.5 MB in the end (delta: -71.8 MB). Peak memory consumption was 28.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 90.62 ms. Allocated memory is still 203.9 MB. Free memory was 172.5 MB in the beginning and 168.5 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1308.32 ms. Allocated memory was 203.9 MB in the beginning and 237.5 MB in the end (delta: 33.6 MB). Free memory was 167.8 MB in the beginning and 195.1 MB in the end (delta: -27.3 MB). Peak memory consumption was 83.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 13454.48 ms. Allocated memory was 237.5 MB in the beginning and 470.8 MB in the end (delta: 233.3 MB). Free memory was 193.7 MB in the beginning and 243.1 MB in the end (delta: -49.5 MB). Peak memory consumption was 183.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 193]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L86] int waterLevel = 1; [L87] int methaneLevelCritical = 0; [L367] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L564] int cleanupTimeShifts = 4; [L667] int pumpRunning = 0; [L668] int systemActive = 1; [L640] int retValue_acc ; [L641] int tmp ; [L645] FCALL select_helpers() [L646] FCALL select_features() [L647] CALL, EXPR valid_product() [L69] int retValue_acc ; [L72] retValue_acc = 1 [L73] return (retValue_acc); [L647] RET, EXPR valid_product() [L647] tmp = valid_product() [L649] COND TRUE \read(tmp) [L651] FCALL setup() [L652] CALL runTest() [L634] CALL test() [L941] int splverifierCounter ; [L942] int tmp ; [L943] int tmp___0 ; [L944] int tmp___1 ; [L945] int tmp___2 ; [L948] splverifierCounter = 0 [L950] COND TRUE 1 [L952] COND TRUE splverifierCounter < 4 [L958] tmp = __VERIFIER_nondet_int() [L960] COND TRUE \read(tmp) [L962] CALL waterRise() [L104] COND TRUE waterLevel < 2 [L105] waterLevel = waterLevel + 1 [L962] RET waterRise() [L968] tmp___0 = __VERIFIER_nondet_int() [L970] COND FALSE !(\read(tmp___0)) [L978] tmp___2 = __VERIFIER_nondet_int() [L980] COND FALSE !(\read(tmp___2)) [L984] tmp___1 = __VERIFIER_nondet_int() [L986] COND TRUE \read(tmp___1) [L988] CALL stopSystem() [L894] COND FALSE !(\read(pumpRunning)) [L901] systemActive = 0 [L988] RET stopSystem() [L995] CALL timeShift() [L675] COND FALSE !(\read(pumpRunning)) [L682] COND FALSE !(\read(systemActive)) [L690] CALL __utac_acc__Specification3_spec__1() [L907] int tmp ; [L908] int tmp___0 ; [L909] int tmp___1 ; [L913] CALL, EXPR isMethaneLevelCritical() [L125] int retValue_acc ; [L128] retValue_acc = methaneLevelCritical [L129] return (retValue_acc); [L913] RET, EXPR isMethaneLevelCritical() [L913] tmp = isMethaneLevelCritical() [L915] COND FALSE !(\read(tmp)) [L919] CALL, EXPR getWaterLevel() [L157] int retValue_acc ; [L160] retValue_acc = waterLevel [L161] return (retValue_acc); [L919] RET, EXPR getWaterLevel() [L919] tmp___0 = getWaterLevel() [L921] COND TRUE tmp___0 == 2 [L923] CALL, EXPR isPumpRunning() [L808] int retValue_acc ; [L811] retValue_acc = pumpRunning [L812] return (retValue_acc); [L923] RET, EXPR isPumpRunning() [L923] tmp___1 = isPumpRunning() [L925] COND FALSE !(\read(tmp___1)) [L929] CALL __automaton_fail() [L193] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 42 procedures, 254 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 13.3s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 10.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 588 SDtfs, 983 SDslu, 397 SDs, 0 SdLazy, 2286 SolverSat, 570 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 102 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 3.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=613occurred 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, 198 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 292 NumberOfCodeBlocks, 292 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 221 ConstructedInterpolants, 0 QuantifiedInterpolants, 61524 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...