/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_spec4_product33.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 17:12:21,216 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 17:12:21,219 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 17:12:21,243 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 17:12:21,243 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 17:12:21,244 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 17:12:21,245 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 17:12:21,247 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 17:12:21,249 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 17:12:21,250 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 17:12:21,251 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 17:12:21,252 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 17:12:21,252 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 17:12:21,253 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 17:12:21,254 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 17:12:21,255 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 17:12:21,256 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 17:12:21,257 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 17:12:21,259 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 17:12:21,261 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 17:12:21,262 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 17:12:21,263 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 17:12:21,265 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 17:12:21,265 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 17:12:21,268 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 17:12:21,268 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 17:12:21,268 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 17:12:21,272 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 17:12:21,273 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 17:12:21,273 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 17:12:21,277 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 17:12:21,278 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 17:12:21,278 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 17:12:21,279 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 17:12:21,280 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 17:12:21,280 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 17:12:21,281 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 17:12:21,281 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 17:12:21,281 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 17:12:21,282 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 17:12:21,283 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 17:12:21,283 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 17:12:21,306 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 17:12:21,306 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 17:12:21,307 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 17:12:21,307 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 17:12:21,308 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 17:12:21,308 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 17:12:21,308 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 17:12:21,308 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 17:12:21,308 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 17:12:21,308 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 17:12:21,309 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 17:12:21,309 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 17:12:21,309 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 17:12:21,309 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 17:12:21,309 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 17:12:21,310 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 17:12:21,310 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 17:12:21,310 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 17:12:21,310 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 17:12:21,310 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 17:12:21,311 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 17:12:21,311 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 17:12:21,311 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 17:12:21,311 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 17:12:21,311 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 17:12:21,312 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 17:12:21,312 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 17:12:21,312 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 17:12:21,312 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 17:12:21,312 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 17:12:21,649 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 17:12:21,661 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 17:12:21,666 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 17:12:21,669 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 17:12:21,670 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 17:12:21,670 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product33.cil.c [2020-08-21 17:12:21,731 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6ac5f6916/98e8c2d4f0b045edab1802d1a4f390e3/FLAG03c0d54b8 [2020-08-21 17:12:22,233 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 17:12:22,234 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product33.cil.c [2020-08-21 17:12:22,247 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6ac5f6916/98e8c2d4f0b045edab1802d1a4f390e3/FLAG03c0d54b8 [2020-08-21 17:12:22,579 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6ac5f6916/98e8c2d4f0b045edab1802d1a4f390e3 [2020-08-21 17:12:22,588 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 17:12:22,589 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 17:12:22,591 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 17:12:22,592 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 17:12:22,595 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 17:12:22,597 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:12:22" (1/1) ... [2020-08-21 17:12:22,600 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60cc7f1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:12:22, skipping insertion in model container [2020-08-21 17:12:22,600 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:12:22" (1/1) ... [2020-08-21 17:12:22,608 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 17:12:22,672 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 17:12:23,075 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 17:12:23,094 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 17:12:23,197 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 17:12:23,230 INFO L208 MainTranslator]: Completed translation [2020-08-21 17:12:23,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:12:23 WrapperNode [2020-08-21 17:12:23,231 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 17:12:23,232 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 17:12:23,232 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 17:12:23,232 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 17:12:23,244 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:12:23" (1/1) ... [2020-08-21 17:12:23,245 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:12:23" (1/1) ... [2020-08-21 17:12:23,264 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:12:23" (1/1) ... [2020-08-21 17:12:23,265 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:12:23" (1/1) ... [2020-08-21 17:12:23,297 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:12:23" (1/1) ... [2020-08-21 17:12:23,308 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:12:23" (1/1) ... [2020-08-21 17:12:23,313 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:12:23" (1/1) ... [2020-08-21 17:12:23,321 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 17:12:23,321 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 17:12:23,322 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 17:12:23,322 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 17:12:23,323 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:12:23" (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 17:12:23,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 17:12:23,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 17:12:23,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 17:12:23,390 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 17:12:23,391 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 17:12:23,391 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 17:12:23,391 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 17:12:23,392 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 17:12:23,392 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 17:12:23,392 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 17:12:23,392 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 17:12:23,393 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 17:12:23,393 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 17:12:23,393 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 17:12:23,393 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 17:12:23,393 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 17:12:23,394 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 17:12:23,394 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 17:12:23,394 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 17:12:23,394 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 17:12:23,395 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 17:12:23,395 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 17:12:23,395 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 17:12:23,395 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 17:12:23,396 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 17:12:23,396 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 17:12:23,397 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 17:12:23,397 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 17:12:23,397 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 17:12:23,397 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 17:12:23,397 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 17:12:23,397 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 17:12:23,397 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 17:12:23,398 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 17:12:23,398 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 17:12:23,398 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 17:12:23,398 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-21 17:12:23,398 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 17:12:23,398 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 17:12:23,398 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 17:12:23,398 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 17:12:23,398 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 17:12:23,398 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 17:12:23,399 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 17:12:23,399 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 17:12:23,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 17:12:23,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 17:12:23,399 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 17:12:23,399 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 17:12:23,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 17:12:23,399 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 17:12:23,399 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 17:12:23,400 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 17:12:23,400 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 17:12:23,400 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 17:12:23,400 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 17:12:23,400 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 17:12:23,401 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 17:12:23,401 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 17:12:23,401 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 17:12:23,401 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 17:12:23,401 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 17:12:23,401 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 17:12:23,401 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 17:12:23,401 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 17:12:23,401 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 17:12:23,402 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 17:12:23,402 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 17:12:23,402 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 17:12:23,402 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 17:12:23,402 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 17:12:23,403 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 17:12:23,403 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 17:12:23,403 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 17:12:23,403 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 17:12:23,404 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 17:12:23,404 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 17:12:23,404 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 17:12:23,405 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 17:12:23,405 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-21 17:12:23,405 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 17:12:23,405 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 17:12:23,405 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 17:12:23,405 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 17:12:23,405 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 17:12:23,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 17:12:23,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 17:12:23,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 17:12:24,553 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 17:12:24,553 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 17:12:24,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:12:24 BoogieIcfgContainer [2020-08-21 17:12:24,562 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 17:12:24,565 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 17:12:24,565 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 17:12:24,568 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 17:12:24,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 05:12:22" (1/3) ... [2020-08-21 17:12:24,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18589243 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:12:24, skipping insertion in model container [2020-08-21 17:12:24,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:12:23" (2/3) ... [2020-08-21 17:12:24,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18589243 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:12:24, skipping insertion in model container [2020-08-21 17:12:24,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:12:24" (3/3) ... [2020-08-21 17:12:24,573 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product33.cil.c [2020-08-21 17:12:24,583 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 17:12:24,594 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 17:12:24,606 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 17:12:24,629 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 17:12:24,630 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 17:12:24,630 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 17:12:24,630 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 17:12:24,631 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 17:12:24,631 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 17:12:24,631 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 17:12:24,631 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 17:12:24,653 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states. [2020-08-21 17:12:24,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-21 17:12:24,663 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:12:24,664 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:12:24,664 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:12:24,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:12:24,670 INFO L82 PathProgramCache]: Analyzing trace with hash 1120421974, now seen corresponding path program 1 times [2020-08-21 17:12:24,679 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:12:24,680 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [283054905] [2020-08-21 17:12:24,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:12:24,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:25,332 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:12:25,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:12:25,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:25,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:12:25,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:25,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:12:25,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:25,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:12:25,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:25,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:12:25,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:25,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 17:12:25,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:25,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 17:12:25,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:25,455 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 17:12:25,456 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [283054905] [2020-08-21 17:12:25,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:12:25,460 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 17:12:25,461 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335062500] [2020-08-21 17:12:25,471 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 17:12:25,471 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:12:25,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 17:12:25,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 17:12:25,494 INFO L87 Difference]: Start difference. First operand 148 states. Second operand 3 states. [2020-08-21 17:12:26,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:12:26,559 INFO L93 Difference]: Finished difference Result 249 states and 331 transitions. [2020-08-21 17:12:26,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 17:12:26,562 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-21 17:12:26,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:12:26,576 INFO L225 Difference]: With dead ends: 249 [2020-08-21 17:12:26,577 INFO L226 Difference]: Without dead ends: 135 [2020-08-21 17:12:26,581 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 17:12:26,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-08-21 17:12:26,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 105. [2020-08-21 17:12:26,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-08-21 17:12:26,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 123 transitions. [2020-08-21 17:12:26,666 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 123 transitions. Word has length 46 [2020-08-21 17:12:26,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:12:26,667 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 123 transitions. [2020-08-21 17:12:26,667 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 17:12:26,667 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 123 transitions. [2020-08-21 17:12:26,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-21 17:12:26,671 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:12:26,671 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:12:26,671 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 17:12:26,671 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:12:26,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:12:26,672 INFO L82 PathProgramCache]: Analyzing trace with hash 1195015831, now seen corresponding path program 1 times [2020-08-21 17:12:26,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:12:26,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [496493734] [2020-08-21 17:12:26,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:12:26,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:27,026 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:12:27,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:12:27,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:27,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:12:27,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:27,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:12:27,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:27,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:12:27,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:27,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:12:27,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:27,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 17:12:27,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:27,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 17:12:27,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:27,074 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 17:12:27,074 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [496493734] [2020-08-21 17:12:27,075 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:12:27,075 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 17:12:27,075 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504449294] [2020-08-21 17:12:27,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 17:12:27,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:12:27,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 17:12:27,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 17:12:27,078 INFO L87 Difference]: Start difference. First operand 105 states and 123 transitions. Second operand 4 states. [2020-08-21 17:12:27,547 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:12:28,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:12:28,232 INFO L93 Difference]: Finished difference Result 182 states and 222 transitions. [2020-08-21 17:12:28,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 17:12:28,233 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-21 17:12:28,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:12:28,236 INFO L225 Difference]: With dead ends: 182 [2020-08-21 17:12:28,236 INFO L226 Difference]: Without dead ends: 119 [2020-08-21 17:12:28,238 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 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 17:12:28,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-08-21 17:12:28,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 96. [2020-08-21 17:12:28,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-08-21 17:12:28,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 111 transitions. [2020-08-21 17:12:28,271 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 111 transitions. Word has length 47 [2020-08-21 17:12:28,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:12:28,272 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 111 transitions. [2020-08-21 17:12:28,272 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 17:12:28,272 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 111 transitions. [2020-08-21 17:12:28,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-21 17:12:28,274 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:12:28,274 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] [2020-08-21 17:12:28,274 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 17:12:28,274 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:12:28,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:12:28,275 INFO L82 PathProgramCache]: Analyzing trace with hash -234309885, now seen corresponding path program 1 times [2020-08-21 17:12:28,275 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:12:28,275 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1585313376] [2020-08-21 17:12:28,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:12:28,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:28,655 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:12:28,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:12:28,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:28,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:12:28,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:28,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:12:28,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:28,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:12:28,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:28,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:12:28,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:28,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 17:12:28,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:28,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 17:12:28,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:28,771 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 17:12:28,772 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1585313376] [2020-08-21 17:12:28,772 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:12:28,772 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 17:12:28,773 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221943781] [2020-08-21 17:12:28,774 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 17:12:28,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:12:28,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 17:12:28,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 17:12:28,776 INFO L87 Difference]: Start difference. First operand 96 states and 111 transitions. Second operand 8 states. [2020-08-21 17:12:29,161 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:12:29,499 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:12:29,750 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:12:29,999 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:12:30,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:12:30,905 INFO L93 Difference]: Finished difference Result 191 states and 236 transitions. [2020-08-21 17:12:30,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 17:12:30,906 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-21 17:12:30,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:12:30,908 INFO L225 Difference]: With dead ends: 191 [2020-08-21 17:12:30,909 INFO L226 Difference]: Without dead ends: 119 [2020-08-21 17:12:30,910 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-21 17:12:30,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-08-21 17:12:30,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 96. [2020-08-21 17:12:30,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-08-21 17:12:30,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 110 transitions. [2020-08-21 17:12:30,961 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 110 transitions. Word has length 51 [2020-08-21 17:12:30,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:12:30,961 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 110 transitions. [2020-08-21 17:12:30,961 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 17:12:30,962 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 110 transitions. [2020-08-21 17:12:30,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-21 17:12:30,965 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:12:30,965 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] [2020-08-21 17:12:30,965 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 17:12:30,965 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:12:30,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:12:30,966 INFO L82 PathProgramCache]: Analyzing trace with hash -962632878, now seen corresponding path program 1 times [2020-08-21 17:12:30,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:12:30,966 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1674096900] [2020-08-21 17:12:30,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:12:31,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:31,297 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:12:31,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:12:31,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:31,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:12:31,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:31,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:12:31,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:31,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:12:31,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:31,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:12:31,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:31,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 17:12:31,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:31,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:12:31,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:31,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 17:12:31,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:31,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-21 17:12:31,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:31,413 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 17:12:31,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1674096900] [2020-08-21 17:12:31,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:12:31,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 17:12:31,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295790821] [2020-08-21 17:12:31,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 17:12:31,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:12:31,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 17:12:31,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 17:12:31,416 INFO L87 Difference]: Start difference. First operand 96 states and 110 transitions. Second operand 6 states. [2020-08-21 17:12:31,780 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:12:32,905 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:12:33,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:12:33,324 INFO L93 Difference]: Finished difference Result 274 states and 340 transitions. [2020-08-21 17:12:33,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 17:12:33,324 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2020-08-21 17:12:33,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:12:33,329 INFO L225 Difference]: With dead ends: 274 [2020-08-21 17:12:33,329 INFO L226 Difference]: Without dead ends: 202 [2020-08-21 17:12:33,330 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-08-21 17:12:33,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-08-21 17:12:33,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 161. [2020-08-21 17:12:33,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-08-21 17:12:33,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 185 transitions. [2020-08-21 17:12:33,369 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 185 transitions. Word has length 59 [2020-08-21 17:12:33,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:12:33,369 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 185 transitions. [2020-08-21 17:12:33,370 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 17:12:33,370 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 185 transitions. [2020-08-21 17:12:33,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-08-21 17:12:33,371 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:12:33,371 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:12:33,372 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 17:12:33,372 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:12:33,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:12:33,372 INFO L82 PathProgramCache]: Analyzing trace with hash 869233952, now seen corresponding path program 1 times [2020-08-21 17:12:33,372 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:12:33,373 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1403701446] [2020-08-21 17:12:33,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:12:33,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:33,679 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:12:33,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:12:33,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:33,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:12:33,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:33,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:12:33,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:33,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:12:33,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:33,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:12:33,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:33,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 17:12:33,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:33,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:12:33,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:33,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:12:33,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:33,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:12:33,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:33,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-21 17:12:33,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:33,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-21 17:12:33,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:33,803 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 17:12:33,803 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1403701446] [2020-08-21 17:12:33,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:12:33,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 17:12:33,804 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288313922] [2020-08-21 17:12:33,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 17:12:33,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:12:33,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 17:12:33,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-21 17:12:33,806 INFO L87 Difference]: Start difference. First operand 161 states and 185 transitions. Second operand 12 states. [2020-08-21 17:12:34,402 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:12:34,720 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:12:34,967 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:12:35,198 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:12:35,751 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:12:36,484 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:12:36,772 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:12:37,046 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:12:37,272 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:12:37,548 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:12:37,812 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:12:38,692 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:12:38,978 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:12:39,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:12:39,615 INFO L93 Difference]: Finished difference Result 568 states and 750 transitions. [2020-08-21 17:12:39,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-21 17:12:39,617 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 73 [2020-08-21 17:12:39,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:12:39,625 INFO L225 Difference]: With dead ends: 568 [2020-08-21 17:12:39,626 INFO L226 Difference]: Without dead ends: 431 [2020-08-21 17:12:39,627 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-21 17:12:39,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2020-08-21 17:12:39,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 373. [2020-08-21 17:12:39,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 373 states. [2020-08-21 17:12:39,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 443 transitions. [2020-08-21 17:12:39,712 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 443 transitions. Word has length 73 [2020-08-21 17:12:39,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:12:39,712 INFO L479 AbstractCegarLoop]: Abstraction has 373 states and 443 transitions. [2020-08-21 17:12:39,712 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 17:12:39,713 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 443 transitions. [2020-08-21 17:12:39,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-08-21 17:12:39,716 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:12:39,717 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:12:39,717 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 17:12:39,717 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:12:39,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:12:39,718 INFO L82 PathProgramCache]: Analyzing trace with hash -1689893862, now seen corresponding path program 1 times [2020-08-21 17:12:39,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:12:39,718 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1092406526] [2020-08-21 17:12:39,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:12:39,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:39,981 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:12:39,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:12:39,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:40,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:12:40,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:40,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:12:40,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:40,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:12:40,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:40,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:12:40,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:40,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 17:12:40,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:40,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 17:12:40,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:40,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:12:40,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:40,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:12:40,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:40,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:12:40,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:40,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:12:40,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:40,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-21 17:12:40,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:40,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:12:40,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:40,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-21 17:12:40,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:40,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 17:12:40,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:40,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-21 17:12:40,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:40,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:12:40,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:40,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-21 17:12:40,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:40,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-21 17:12:40,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:40,270 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-08-21 17:12:40,270 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1092406526] [2020-08-21 17:12:40,272 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 17:12:40,272 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-21 17:12:40,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805658192] [2020-08-21 17:12:40,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 17:12:40,273 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:12:40,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 17:12:40,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-21 17:12:40,274 INFO L87 Difference]: Start difference. First operand 373 states and 443 transitions. Second operand 13 states. [2020-08-21 17:12:40,815 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:12:41,408 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:12:41,883 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:12:42,147 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 17:12:42,442 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:12:42,686 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:12:42,915 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:12:43,155 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 17:12:43,424 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:12:43,706 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:12:44,997 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:12:45,230 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 17:12:45,464 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:12:45,707 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:12:46,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:12:46,221 INFO L93 Difference]: Finished difference Result 778 states and 1000 transitions. [2020-08-21 17:12:46,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-21 17:12:46,222 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 117 [2020-08-21 17:12:46,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:12:46,227 INFO L225 Difference]: With dead ends: 778 [2020-08-21 17:12:46,227 INFO L226 Difference]: Without dead ends: 429 [2020-08-21 17:12:46,229 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=215, Invalid=907, Unknown=0, NotChecked=0, Total=1122 [2020-08-21 17:12:46,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2020-08-21 17:12:46,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 367. [2020-08-21 17:12:46,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 367 states. [2020-08-21 17:12:46,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 437 transitions. [2020-08-21 17:12:46,303 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 437 transitions. Word has length 117 [2020-08-21 17:12:46,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:12:46,304 INFO L479 AbstractCegarLoop]: Abstraction has 367 states and 437 transitions. [2020-08-21 17:12:46,304 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 17:12:46,304 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 437 transitions. [2020-08-21 17:12:46,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-08-21 17:12:46,306 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:12:46,307 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:12:46,307 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 17:12:46,307 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:12:46,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:12:46,308 INFO L82 PathProgramCache]: Analyzing trace with hash -2066212398, now seen corresponding path program 1 times [2020-08-21 17:12:46,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:12:46,308 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [581190717] [2020-08-21 17:12:46,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:12:46,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:46,568 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:12:46,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:12:46,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:46,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:12:46,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:46,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:12:46,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:46,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:12:46,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:46,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:12:46,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:46,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 17:12:46,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:46,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:12:46,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:46,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:12:46,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:46,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:12:46,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:46,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:12:46,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:46,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-21 17:12:46,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:46,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:12:46,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:46,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-21 17:12:46,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:46,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-21 17:12:46,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:46,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:12:46,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:46,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-21 17:12:46,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:46,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-21 17:12:46,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:46,739 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-21 17:12:46,739 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [581190717] [2020-08-21 17:12:46,740 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 17:12:46,740 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 17:12:46,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782037488] [2020-08-21 17:12:46,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 17:12:46,741 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:12:46,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 17:12:46,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-21 17:12:46,742 INFO L87 Difference]: Start difference. First operand 367 states and 437 transitions. Second operand 12 states. [2020-08-21 17:12:47,227 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:12:47,465 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:12:47,700 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:12:48,226 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:12:48,459 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:12:48,685 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:12:49,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:12:49,331 INFO L93 Difference]: Finished difference Result 663 states and 818 transitions. [2020-08-21 17:12:49,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 17:12:49,334 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 109 [2020-08-21 17:12:49,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:12:49,337 INFO L225 Difference]: With dead ends: 663 [2020-08-21 17:12:49,337 INFO L226 Difference]: Without dead ends: 320 [2020-08-21 17:12:49,339 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-21 17:12:49,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2020-08-21 17:12:49,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 296. [2020-08-21 17:12:49,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 296 states. [2020-08-21 17:12:49,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 350 transitions. [2020-08-21 17:12:49,396 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 350 transitions. Word has length 109 [2020-08-21 17:12:49,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:12:49,396 INFO L479 AbstractCegarLoop]: Abstraction has 296 states and 350 transitions. [2020-08-21 17:12:49,396 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 17:12:49,397 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 350 transitions. [2020-08-21 17:12:49,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-08-21 17:12:49,398 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:12:49,398 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:12:49,399 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 17:12:49,399 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:12:49,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:12:49,399 INFO L82 PathProgramCache]: Analyzing trace with hash 147640793, now seen corresponding path program 1 times [2020-08-21 17:12:49,400 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:12:49,400 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [905931872] [2020-08-21 17:12:49,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:12:49,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:49,745 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:12:49,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:12:49,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:49,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:12:49,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:49,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:12:49,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:49,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:12:49,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:49,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:12:49,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:49,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 17:12:49,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:49,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 17:12:49,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:49,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:12:49,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:49,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:12:49,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:49,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:12:49,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:49,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 17:12:49,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:49,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-21 17:12:49,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:49,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:12:49,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:49,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-21 17:12:49,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:49,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-21 17:12:49,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:49,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:12:49,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:49,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-21 17:12:49,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:49,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 17:12:49,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:12:49,915 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 17:12:49,916 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [905931872] [2020-08-21 17:12:49,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 17:12:49,916 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 17:12:49,916 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570176243] [2020-08-21 17:12:49,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 17:12:49,917 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:12:49,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 17:12:49,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-21 17:12:49,918 INFO L87 Difference]: Start difference. First operand 296 states and 350 transitions. Second operand 12 states. [2020-08-21 17:12:50,295 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:12:51,052 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:12:51,517 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 17:12:51,778 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:12:52,014 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:12:52,239 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:12:52,488 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:12:52,743 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 17:12:53,718 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:12:53,982 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:12:54,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:12:54,473 INFO L93 Difference]: Finished difference Result 687 states and 875 transitions. [2020-08-21 17:12:54,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-21 17:12:54,473 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 113 [2020-08-21 17:12:54,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:12:54,482 INFO L225 Difference]: With dead ends: 687 [2020-08-21 17:12:54,482 INFO L226 Difference]: Without dead ends: 469 [2020-08-21 17:12:54,484 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 41 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=235, Invalid=577, Unknown=0, NotChecked=0, Total=812 [2020-08-21 17:12:54,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2020-08-21 17:12:54,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 393. [2020-08-21 17:12:54,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 393 states. [2020-08-21 17:12:54,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 472 transitions. [2020-08-21 17:12:54,572 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 472 transitions. Word has length 113 [2020-08-21 17:12:54,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:12:54,572 INFO L479 AbstractCegarLoop]: Abstraction has 393 states and 472 transitions. [2020-08-21 17:12:54,572 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 17:12:54,573 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 472 transitions. [2020-08-21 17:12:54,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-08-21 17:12:54,575 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:12:54,576 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:12:54,576 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 17:12:54,576 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:12:54,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:12:54,576 INFO L82 PathProgramCache]: Analyzing trace with hash 1088865250, now seen corresponding path program 2 times [2020-08-21 17:12:54,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:12:54,577 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [295410325] [2020-08-21 17:12:54,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:12:54,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 17:12:54,655 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 17:12:54,655 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 17:12:54,660 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 17:12:54,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 05:12:54 BoogieIcfgContainer [2020-08-21 17:12:54,707 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 17:12:54,713 INFO L168 Benchmark]: Toolchain (without parser) took 32119.71 ms. Allocated memory was 138.9 MB in the beginning and 650.6 MB in the end (delta: 511.7 MB). Free memory was 101.3 MB in the beginning and 491.0 MB in the end (delta: -389.7 MB). Peak memory consumption was 122.0 MB. Max. memory is 7.1 GB. [2020-08-21 17:12:54,718 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 17:12:54,720 INFO L168 Benchmark]: CACSL2BoogieTranslator took 639.96 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 101.1 MB in the beginning and 168.4 MB in the end (delta: -67.3 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. [2020-08-21 17:12:54,721 INFO L168 Benchmark]: Boogie Preprocessor took 89.53 ms. Allocated memory is still 201.3 MB. Free memory was 168.4 MB in the beginning and 164.3 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-08-21 17:12:54,721 INFO L168 Benchmark]: RCFGBuilder took 1240.53 ms. Allocated memory was 201.3 MB in the beginning and 233.3 MB in the end (delta: 32.0 MB). Free memory was 164.3 MB in the beginning and 196.8 MB in the end (delta: -32.5 MB). Peak memory consumption was 84.0 MB. Max. memory is 7.1 GB. [2020-08-21 17:12:54,724 INFO L168 Benchmark]: TraceAbstraction took 30142.24 ms. Allocated memory was 233.3 MB in the beginning and 650.6 MB in the end (delta: 417.3 MB). Free memory was 195.3 MB in the beginning and 491.0 MB in the end (delta: -295.6 MB). Peak memory consumption was 121.7 MB. Max. memory is 7.1 GB. [2020-08-21 17:12:54,734 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 639.96 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 101.1 MB in the beginning and 168.4 MB in the end (delta: -67.3 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 89.53 ms. Allocated memory is still 201.3 MB. Free memory was 168.4 MB in the beginning and 164.3 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1240.53 ms. Allocated memory was 201.3 MB in the beginning and 233.3 MB in the end (delta: 32.0 MB). Free memory was 164.3 MB in the beginning and 196.8 MB in the end (delta: -32.5 MB). Peak memory consumption was 84.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 30142.24 ms. Allocated memory was 233.3 MB in the beginning and 650.6 MB in the end (delta: 417.3 MB). Free memory was 195.3 MB in the beginning and 491.0 MB in the end (delta: -295.6 MB). Peak memory consumption was 121.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 869]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L209] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L406] int cleanupTimeShifts = 4; [L615] int waterLevel = 1; [L616] int methaneLevelCritical = 0; [L712] int pumpRunning = 0; [L713] int systemActive = 1; [L487] int retValue_acc ; [L488] int tmp ; [L492] FCALL select_helpers() [L493] FCALL select_features() [L494] CALL, EXPR valid_product() [L536] int retValue_acc ; [L539] retValue_acc = 1 [L540] return (retValue_acc); [L494] RET, EXPR valid_product() [L494] tmp = valid_product() [L496] COND TRUE \read(tmp) [L498] FCALL setup() [L499] CALL runTest() [L478] CALL test() [L546] int splverifierCounter ; [L547] int tmp ; [L548] int tmp___0 ; [L549] int tmp___1 ; [L550] int tmp___2 ; [L553] splverifierCounter = 0 [L555] COND TRUE 1 [L557] COND TRUE splverifierCounter < 4 [L563] tmp = __VERIFIER_nondet_int() [L565] COND TRUE \read(tmp) [L567] CALL waterRise() [L633] COND TRUE waterLevel < 2 [L634] waterLevel = waterLevel + 1 [L567] RET waterRise() [L573] tmp___0 = __VERIFIER_nondet_int() [L575] COND FALSE !(\read(tmp___0)) [L583] tmp___2 = __VERIFIER_nondet_int() [L585] COND TRUE \read(tmp___2) [L598] CALL timeShift() [L720] COND FALSE !(\read(pumpRunning)) [L727] COND TRUE \read(systemActive) [L729] CALL processEnvironment() [L749] int tmp ; [L752] COND TRUE ! pumpRunning [L754] CALL, EXPR isHighWaterLevel() [L846] int retValue_acc ; [L847] int tmp ; [L848] int tmp___0 ; [L852] CALL, EXPR isHighWaterSensorDry() [L695] int retValue_acc ; [L698] COND FALSE !(waterLevel < 2) [L702] retValue_acc = 0 [L703] return (retValue_acc); [L852] RET, EXPR isHighWaterSensorDry() [L852] tmp = isHighWaterSensorDry() [L854] COND FALSE !(\read(tmp)) [L857] tmp___0 = 1 [L859] retValue_acc = tmp___0 [L860] return (retValue_acc); [L754] RET, EXPR isHighWaterLevel() [L754] tmp = isHighWaterLevel() [L756] COND TRUE \read(tmp) [L758] CALL activatePump() [L777] pumpRunning = 1 [L758] RET activatePump() [L729] RET processEnvironment() [L735] CALL __utac_acc__Specification4_spec__1() [L875] int tmp ; [L876] int tmp___0 ; [L880] CALL, EXPR getWaterLevel() [L686] int retValue_acc ; [L689] retValue_acc = waterLevel [L690] return (retValue_acc); [L880] RET, EXPR getWaterLevel() [L880] tmp = getWaterLevel() [L882] COND FALSE !(tmp == 0) [L735] RET __utac_acc__Specification4_spec__1() [L598] RET timeShift() [L555] COND TRUE 1 [L557] COND TRUE splverifierCounter < 4 [L563] tmp = __VERIFIER_nondet_int() [L565] COND FALSE !(\read(tmp)) [L573] tmp___0 = __VERIFIER_nondet_int() [L575] COND FALSE !(\read(tmp___0)) [L583] tmp___2 = __VERIFIER_nondet_int() [L585] COND TRUE \read(tmp___2) [L598] CALL timeShift() [L720] COND TRUE \read(pumpRunning) [L722] CALL lowerWaterLevel() [L621] COND TRUE waterLevel > 0 [L622] waterLevel = waterLevel - 1 [L722] RET lowerWaterLevel() [L727] COND TRUE \read(systemActive) [L729] CALL processEnvironment() [L749] int tmp ; [L752] COND FALSE !(! pumpRunning) [L767] FCALL processEnvironment__wrappee__base() [L729] RET processEnvironment() [L735] CALL __utac_acc__Specification4_spec__1() [L875] int tmp ; [L876] int tmp___0 ; [L880] CALL, EXPR getWaterLevel() [L686] int retValue_acc ; [L689] retValue_acc = waterLevel [L690] return (retValue_acc); [L880] RET, EXPR getWaterLevel() [L880] tmp = getWaterLevel() [L882] COND FALSE !(tmp == 0) [L735] RET __utac_acc__Specification4_spec__1() [L598] RET timeShift() [L555] COND TRUE 1 [L557] COND TRUE splverifierCounter < 4 [L563] tmp = __VERIFIER_nondet_int() [L565] COND FALSE !(\read(tmp)) [L573] tmp___0 = __VERIFIER_nondet_int() [L575] COND FALSE !(\read(tmp___0)) [L583] tmp___2 = __VERIFIER_nondet_int() [L585] COND TRUE \read(tmp___2) [L598] CALL timeShift() [L720] COND TRUE \read(pumpRunning) [L722] CALL lowerWaterLevel() [L621] COND TRUE waterLevel > 0 [L622] waterLevel = waterLevel - 1 [L722] RET lowerWaterLevel() [L727] COND TRUE \read(systemActive) [L729] CALL processEnvironment() [L749] int tmp ; [L752] COND FALSE !(! pumpRunning) [L767] FCALL processEnvironment__wrappee__base() [L729] RET processEnvironment() [L735] CALL __utac_acc__Specification4_spec__1() [L875] int tmp ; [L876] int tmp___0 ; [L880] CALL, EXPR getWaterLevel() [L686] int retValue_acc ; [L689] retValue_acc = waterLevel [L690] return (retValue_acc); [L880] RET, EXPR getWaterLevel() [L880] tmp = getWaterLevel() [L882] COND TRUE tmp == 0 [L884] CALL, EXPR isPumpRunning() [L801] int retValue_acc ; [L804] retValue_acc = pumpRunning [L805] return (retValue_acc); [L884] RET, EXPR isPumpRunning() [L884] tmp___0 = isPumpRunning() [L886] COND TRUE \read(tmp___0) [L888] CALL __automaton_fail() [L869] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 37 procedures, 215 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 30.0s, OverallIterations: 9, TraceHistogramMax: 3, AutomataDifference: 25.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 802 SDtfs, 1767 SDslu, 1077 SDs, 0 SdLazy, 5116 SolverSat, 1152 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 10.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 342 GetRequests, 215 SyntacticMatches, 5 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 522 ImplicationChecksByTransitivity, 13.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=393occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 8 MinimizatonAttempts, 337 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.4s InterpolantComputationTime, 763 NumberOfCodeBlocks, 763 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 607 ConstructedInterpolants, 0 QuantifiedInterpolants, 203130 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 66/76 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...