/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product05.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 11:57:55,274 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 11:57:55,277 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 11:57:55,317 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 11:57:55,318 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 11:57:55,327 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 11:57:55,329 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 11:57:55,332 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 11:57:55,335 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 11:57:55,338 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 11:57:55,338 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 11:57:55,339 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 11:57:55,340 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 11:57:55,343 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 11:57:55,345 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 11:57:55,347 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 11:57:55,348 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 11:57:55,349 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 11:57:55,351 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 11:57:55,359 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 11:57:55,361 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 11:57:55,362 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 11:57:55,363 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 11:57:55,363 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 11:57:55,376 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 11:57:55,379 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 11:57:55,379 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 11:57:55,380 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 11:57:55,380 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 11:57:55,381 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 11:57:55,381 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 11:57:55,382 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 11:57:55,383 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 11:57:55,383 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 11:57:55,387 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 11:57:55,388 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 11:57:55,388 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 11:57:55,389 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 11:57:55,392 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 11:57:55,393 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 11:57:55,393 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 11:57:55,394 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 11:57:55,430 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 11:57:55,431 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 11:57:55,433 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 11:57:55,433 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 11:57:55,433 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 11:57:55,433 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 11:57:55,434 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 11:57:55,434 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 11:57:55,434 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 11:57:55,434 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 11:57:55,435 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 11:57:55,435 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 11:57:55,436 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 11:57:55,436 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 11:57:55,436 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 11:57:55,436 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 11:57:55,437 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 11:57:55,437 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 11:57:55,437 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 11:57:55,437 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 11:57:55,438 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 11:57:55,438 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 11:57:55,438 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 11:57:55,438 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 11:57:55,438 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 11:57:55,438 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 11:57:55,439 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 11:57:55,439 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 11:57:55,439 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 11:57:55,439 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; [2020-08-18 11:57:55,760 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 11:57:55,774 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 11:57:55,777 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 11:57:55,779 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 11:57:55,779 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 11:57:55,780 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product05.cil.c [2020-08-18 11:57:55,842 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/48215d262/262933f8846240bfaa1fea5d855f9ccc/FLAGc68bc0257 [2020-08-18 11:57:56,326 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 11:57:56,327 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product05.cil.c [2020-08-18 11:57:56,340 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/48215d262/262933f8846240bfaa1fea5d855f9ccc/FLAGc68bc0257 [2020-08-18 11:57:56,641 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/48215d262/262933f8846240bfaa1fea5d855f9ccc [2020-08-18 11:57:56,652 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 11:57:56,654 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 11:57:56,658 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 11:57:56,658 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 11:57:56,661 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 11:57:56,663 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:57:56" (1/1) ... [2020-08-18 11:57:56,667 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7503bbdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:57:56, skipping insertion in model container [2020-08-18 11:57:56,667 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:57:56" (1/1) ... [2020-08-18 11:57:56,676 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 11:57:56,741 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 11:57:57,127 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 11:57:57,242 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 11:57:57,330 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 11:57:57,359 INFO L208 MainTranslator]: Completed translation [2020-08-18 11:57:57,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:57:57 WrapperNode [2020-08-18 11:57:57,359 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 11:57:57,360 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 11:57:57,360 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 11:57:57,360 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 11:57:57,372 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:57:57" (1/1) ... [2020-08-18 11:57:57,373 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:57:57" (1/1) ... [2020-08-18 11:57:57,392 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:57:57" (1/1) ... [2020-08-18 11:57:57,393 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:57:57" (1/1) ... [2020-08-18 11:57:57,431 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:57:57" (1/1) ... [2020-08-18 11:57:57,440 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:57:57" (1/1) ... [2020-08-18 11:57:57,445 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:57:57" (1/1) ... [2020-08-18 11:57:57,452 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 11:57:57,453 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 11:57:57,453 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 11:57:57,453 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 11:57:57,454 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:57:57" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 11:57:57,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 11:57:57,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 11:57:57,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 11:57:57,527 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 11:57:57,528 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 11:57:57,528 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 11:57:57,528 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 11:57:57,529 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 11:57:57,529 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 11:57:57,529 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 11:57:57,530 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 11:57:57,530 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 11:57:57,530 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 11:57:57,530 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 11:57:57,530 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 11:57:57,531 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 11:57:57,532 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 11:57:57,532 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 11:57:57,532 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 11:57:57,532 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 11:57:57,532 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 11:57:57,532 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 11:57:57,532 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 11:57:57,533 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 11:57:57,533 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 11:57:57,534 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 11:57:57,534 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 11:57:57,534 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 11:57:57,534 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 11:57:57,535 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 11:57:57,535 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 11:57:57,535 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 11:57:57,535 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 11:57:57,535 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 11:57:57,535 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-18 11:57:57,535 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 11:57:57,536 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 11:57:57,536 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 11:57:57,536 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 11:57:57,536 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 11:57:57,536 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 11:57:57,536 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 11:57:57,536 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 11:57:57,537 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 11:57:57,537 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 11:57:57,540 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 11:57:57,541 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 11:57:57,541 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 11:57:57,541 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 11:57:57,542 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 11:57:57,542 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 11:57:57,542 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-18 11:57:57,542 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 11:57:57,542 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 11:57:57,542 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 11:57:57,543 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 11:57:57,543 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 11:57:57,543 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 11:57:57,543 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 11:57:57,543 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 11:57:57,544 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 11:57:57,544 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 11:57:57,544 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 11:57:57,544 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 11:57:57,544 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 11:57:57,544 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 11:57:57,545 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 11:57:57,545 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 11:57:57,545 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 11:57:57,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 11:57:57,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 11:57:57,545 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 11:57:57,547 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 11:57:57,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 11:57:57,548 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 11:57:57,548 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 11:57:57,548 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 11:57:57,549 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 11:57:57,549 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 11:57:57,549 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 11:57:57,549 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 11:57:57,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 11:57:57,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 11:57:57,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 11:57:58,631 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 11:57:58,631 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 11:57:58,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:57:58 BoogieIcfgContainer [2020-08-18 11:57:58,636 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 11:57:58,638 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 11:57:58,638 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 11:57:58,641 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 11:57:58,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 11:57:56" (1/3) ... [2020-08-18 11:57:58,643 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ceafb81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:57:58, skipping insertion in model container [2020-08-18 11:57:58,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:57:57" (2/3) ... [2020-08-18 11:57:58,643 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ceafb81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:57:58, skipping insertion in model container [2020-08-18 11:57:58,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:57:58" (3/3) ... [2020-08-18 11:57:58,646 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product05.cil.c [2020-08-18 11:57:58,656 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 11:57:58,665 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 11:57:58,680 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 11:57:58,706 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 11:57:58,706 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 11:57:58,707 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 11:57:58,707 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 11:57:58,707 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 11:57:58,707 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 11:57:58,708 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 11:57:58,708 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 11:57:58,743 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states. [2020-08-18 11:57:58,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 11:57:58,754 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:57:58,755 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:57:58,756 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:57:58,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:57:58,762 INFO L82 PathProgramCache]: Analyzing trace with hash 385551815, now seen corresponding path program 1 times [2020-08-18 11:57:58,769 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:57:58,769 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1822742533] [2020-08-18 11:57:58,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:57:59,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:59,404 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:57:59,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:57:59,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:59,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:57:59,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:59,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:57:59,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:59,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:57:59,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:59,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:57:59,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:59,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 11:57:59,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:59,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 11:57:59,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:59,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 11:57:59,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:59,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 11:57:59,520 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1822742533] [2020-08-18 11:57:59,522 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:57:59,522 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 11:57:59,523 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771699266] [2020-08-18 11:57:59,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 11:57:59,530 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:57:59,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 11:57:59,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 11:57:59,548 INFO L87 Difference]: Start difference. First operand 148 states. Second operand 3 states. [2020-08-18 11:58:00,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:58:00,545 INFO L93 Difference]: Finished difference Result 249 states and 331 transitions. [2020-08-18 11:58:00,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 11:58:00,548 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-18 11:58:00,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:58:00,563 INFO L225 Difference]: With dead ends: 249 [2020-08-18 11:58:00,563 INFO L226 Difference]: Without dead ends: 135 [2020-08-18 11:58:00,568 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 11:58:00,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-08-18 11:58:00,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 105. [2020-08-18 11:58:00,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-08-18 11:58:00,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 123 transitions. [2020-08-18 11:58:00,656 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 123 transitions. Word has length 52 [2020-08-18 11:58:00,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:58:00,657 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 123 transitions. [2020-08-18 11:58:00,657 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 11:58:00,657 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 123 transitions. [2020-08-18 11:58:00,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-18 11:58:00,661 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:58:00,661 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:58:00,661 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 11:58:00,662 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:58:00,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:58:00,662 INFO L82 PathProgramCache]: Analyzing trace with hash 881400109, now seen corresponding path program 1 times [2020-08-18 11:58:00,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:58:00,663 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [590121768] [2020-08-18 11:58:00,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:58:00,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:00,989 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:58:00,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:58:00,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:01,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:58:01,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:01,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:58:01,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:01,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:58:01,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:01,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:58:01,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:01,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 11:58:01,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:01,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 11:58:01,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:01,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 11:58:01,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:01,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 11:58:01,038 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [590121768] [2020-08-18 11:58:01,038 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:58:01,038 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 11:58:01,038 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619962484] [2020-08-18 11:58:01,040 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 11:58:01,040 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:58:01,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 11:58:01,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 11:58:01,041 INFO L87 Difference]: Start difference. First operand 105 states and 123 transitions. Second operand 4 states. [2020-08-18 11:58:01,464 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:58:02,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:58:02,084 INFO L93 Difference]: Finished difference Result 182 states and 222 transitions. [2020-08-18 11:58:02,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 11:58:02,085 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-18 11:58:02,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:58:02,087 INFO L225 Difference]: With dead ends: 182 [2020-08-18 11:58:02,087 INFO L226 Difference]: Without dead ends: 119 [2020-08-18 11:58:02,089 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 11:58:02,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-08-18 11:58:02,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 96. [2020-08-18 11:58:02,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-08-18 11:58:02,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 111 transitions. [2020-08-18 11:58:02,132 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 111 transitions. Word has length 53 [2020-08-18 11:58:02,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:58:02,133 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 111 transitions. [2020-08-18 11:58:02,133 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 11:58:02,133 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 111 transitions. [2020-08-18 11:58:02,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-18 11:58:02,142 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:58:02,142 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:58:02,143 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 11:58:02,143 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:58:02,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:58:02,143 INFO L82 PathProgramCache]: Analyzing trace with hash 633168041, now seen corresponding path program 1 times [2020-08-18 11:58:02,144 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:58:02,144 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2028908876] [2020-08-18 11:58:02,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:58:02,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:02,523 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:58:02,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:58:02,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:02,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:58:02,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:02,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:58:02,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:02,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:58:02,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:02,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:58:02,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:02,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 11:58:02,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:02,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 11:58:02,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:02,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 11:58:02,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:02,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 11:58:02,664 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2028908876] [2020-08-18 11:58:02,665 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:58:02,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 11:58:02,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318323476] [2020-08-18 11:58:02,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 11:58:02,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:58:02,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 11:58:02,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 11:58:02,669 INFO L87 Difference]: Start difference. First operand 96 states and 111 transitions. Second operand 8 states. [2020-08-18 11:58:03,022 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:58:03,330 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:58:03,601 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:58:03,851 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:58:04,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:58:04,775 INFO L93 Difference]: Finished difference Result 191 states and 236 transitions. [2020-08-18 11:58:04,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 11:58:04,775 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-18 11:58:04,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:58:04,778 INFO L225 Difference]: With dead ends: 191 [2020-08-18 11:58:04,778 INFO L226 Difference]: Without dead ends: 119 [2020-08-18 11:58:04,779 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-18 11:58:04,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-08-18 11:58:04,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 96. [2020-08-18 11:58:04,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-08-18 11:58:04,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 110 transitions. [2020-08-18 11:58:04,807 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 110 transitions. Word has length 57 [2020-08-18 11:58:04,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:58:04,808 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 110 transitions. [2020-08-18 11:58:04,808 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 11:58:04,808 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 110 transitions. [2020-08-18 11:58:04,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-18 11:58:04,809 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:58:04,809 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] [2020-08-18 11:58:04,810 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 11:58:04,810 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:58:04,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:58:04,810 INFO L82 PathProgramCache]: Analyzing trace with hash 119188522, now seen corresponding path program 1 times [2020-08-18 11:58:04,811 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:58:04,811 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1274313397] [2020-08-18 11:58:04,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:58:04,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:05,079 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:58:05,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:58:05,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:05,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:58:05,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:05,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:58:05,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:05,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:58:05,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:05,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:58:05,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:05,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 11:58:05,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:05,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:58:05,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:05,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 11:58:05,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:05,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 11:58:05,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:05,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-18 11:58:05,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:05,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 11:58:05,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1274313397] [2020-08-18 11:58:05,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:58:05,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 11:58:05,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801889847] [2020-08-18 11:58:05,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 11:58:05,170 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:58:05,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 11:58:05,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 11:58:05,171 INFO L87 Difference]: Start difference. First operand 96 states and 110 transitions. Second operand 8 states. [2020-08-18 11:58:05,538 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:58:06,807 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:58:07,110 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:58:07,365 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:58:07,733 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:58:08,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:58:08,036 INFO L93 Difference]: Finished difference Result 284 states and 375 transitions. [2020-08-18 11:58:08,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 11:58:08,037 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 65 [2020-08-18 11:58:08,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:58:08,041 INFO L225 Difference]: With dead ends: 284 [2020-08-18 11:58:08,041 INFO L226 Difference]: Without dead ends: 212 [2020-08-18 11:58:08,044 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-18 11:58:08,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-08-18 11:58:08,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 166. [2020-08-18 11:58:08,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-08-18 11:58:08,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 197 transitions. [2020-08-18 11:58:08,092 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 197 transitions. Word has length 65 [2020-08-18 11:58:08,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:58:08,093 INFO L479 AbstractCegarLoop]: Abstraction has 166 states and 197 transitions. [2020-08-18 11:58:08,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 11:58:08,093 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 197 transitions. [2020-08-18 11:58:08,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-08-18 11:58:08,095 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:58:08,095 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] [2020-08-18 11:58:08,096 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 11:58:08,096 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:58:08,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:58:08,096 INFO L82 PathProgramCache]: Analyzing trace with hash 2068866518, now seen corresponding path program 1 times [2020-08-18 11:58:08,096 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:58:08,097 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1615370058] [2020-08-18 11:58:08,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:58:08,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:08,386 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:58:08,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:58:08,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:08,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:58:08,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:08,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:58:08,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:08,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:58:08,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:08,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:58:08,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:08,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 11:58:08,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:08,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 11:58:08,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:08,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 11:58:08,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:08,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:58:08,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:08,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-18 11:58:08,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:08,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-18 11:58:08,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:08,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-18 11:58:08,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:08,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 11:58:08,503 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1615370058] [2020-08-18 11:58:08,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:58:08,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 11:58:08,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415352172] [2020-08-18 11:58:08,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 11:58:08,506 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:58:08,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 11:58:08,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 11:58:08,507 INFO L87 Difference]: Start difference. First operand 166 states and 197 transitions. Second operand 6 states. [2020-08-18 11:58:08,831 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:58:09,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:58:09,296 INFO L93 Difference]: Finished difference Result 279 states and 345 transitions. [2020-08-18 11:58:09,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 11:58:09,297 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 73 [2020-08-18 11:58:09,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:58:09,299 INFO L225 Difference]: With dead ends: 279 [2020-08-18 11:58:09,300 INFO L226 Difference]: Without dead ends: 137 [2020-08-18 11:58:09,301 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-08-18 11:58:09,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-08-18 11:58:09,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 125. [2020-08-18 11:58:09,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-08-18 11:58:09,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 140 transitions. [2020-08-18 11:58:09,329 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 140 transitions. Word has length 73 [2020-08-18 11:58:09,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:58:09,330 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 140 transitions. [2020-08-18 11:58:09,330 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 11:58:09,330 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 140 transitions. [2020-08-18 11:58:09,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-08-18 11:58:09,331 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:58:09,331 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] [2020-08-18 11:58:09,331 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 11:58:09,332 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:58:09,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:58:09,332 INFO L82 PathProgramCache]: Analyzing trace with hash -760855184, now seen corresponding path program 1 times [2020-08-18 11:58:09,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:58:09,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2022946061] [2020-08-18 11:58:09,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:58:09,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 11:58:09,390 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 11:58:09,390 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 11:58:09,394 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 11:58:09,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 11:58:09 BoogieIcfgContainer [2020-08-18 11:58:09,417 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 11:58:09,419 INFO L168 Benchmark]: Toolchain (without parser) took 12765.49 ms. Allocated memory was 148.4 MB in the beginning and 440.9 MB in the end (delta: 292.6 MB). Free memory was 103.3 MB in the beginning and 324.1 MB in the end (delta: -220.8 MB). Peak memory consumption was 71.7 MB. Max. memory is 7.1 GB. [2020-08-18 11:58:09,420 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 148.4 MB. Free memory was 122.9 MB in the beginning and 122.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 11:58:09,421 INFO L168 Benchmark]: CACSL2BoogieTranslator took 702.12 ms. Allocated memory was 148.4 MB in the beginning and 205.0 MB in the end (delta: 56.6 MB). Free memory was 103.0 MB in the beginning and 175.2 MB in the end (delta: -72.2 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. [2020-08-18 11:58:09,422 INFO L168 Benchmark]: Boogie Preprocessor took 92.24 ms. Allocated memory is still 205.0 MB. Free memory was 175.2 MB in the beginning and 171.2 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-08-18 11:58:09,423 INFO L168 Benchmark]: RCFGBuilder took 1183.94 ms. Allocated memory was 205.0 MB in the beginning and 233.8 MB in the end (delta: 28.8 MB). Free memory was 171.2 MB in the beginning and 198.0 MB in the end (delta: -26.8 MB). Peak memory consumption was 81.9 MB. Max. memory is 7.1 GB. [2020-08-18 11:58:09,424 INFO L168 Benchmark]: TraceAbstraction took 10779.51 ms. Allocated memory was 233.8 MB in the beginning and 440.9 MB in the end (delta: 207.1 MB). Free memory was 196.7 MB in the beginning and 324.1 MB in the end (delta: -127.4 MB). Peak memory consumption was 79.7 MB. Max. memory is 7.1 GB. [2020-08-18 11:58:09,428 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 148.4 MB. Free memory was 122.9 MB in the beginning and 122.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 702.12 ms. Allocated memory was 148.4 MB in the beginning and 205.0 MB in the end (delta: 56.6 MB). Free memory was 103.0 MB in the beginning and 175.2 MB in the end (delta: -72.2 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 92.24 ms. Allocated memory is still 205.0 MB. Free memory was 175.2 MB in the beginning and 171.2 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1183.94 ms. Allocated memory was 205.0 MB in the beginning and 233.8 MB in the end (delta: 28.8 MB). Free memory was 171.2 MB in the beginning and 198.0 MB in the end (delta: -26.8 MB). Peak memory consumption was 81.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 10779.51 ms. Allocated memory was 233.8 MB in the beginning and 440.9 MB in the end (delta: 207.1 MB). Free memory was 196.7 MB in the beginning and 324.1 MB in the end (delta: -127.4 MB). Peak memory consumption was 79.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 82]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L95] int pumpRunning = 0; [L96] int systemActive = 1; [L297] int cleanupTimeShifts = 4; [L562] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L760] int waterLevel = 1; [L761] int methaneLevelCritical = 0; [L370] int retValue_acc ; [L371] int tmp ; [L375] FCALL select_helpers() [L376] FCALL select_features() [L377] CALL, EXPR valid_product() [L69] int retValue_acc ; [L72] retValue_acc = 1 [L73] return (retValue_acc); [L377] RET, EXPR valid_product() [L377] tmp = valid_product() [L379] COND TRUE \read(tmp) [L381] FCALL setup() [L382] CALL runTest() [L364] CALL test() [L233] int splverifierCounter ; [L234] int tmp ; [L235] int tmp___0 ; [L236] int tmp___1 ; [L237] int tmp___2 ; [L240] splverifierCounter = 0 [L242] COND TRUE 1 [L244] COND TRUE splverifierCounter < 4 [L250] tmp = __VERIFIER_nondet_int() [L252] COND TRUE \read(tmp) [L254] CALL waterRise() [L778] COND TRUE waterLevel < 2 [L779] waterLevel = waterLevel + 1 [L254] RET waterRise() [L260] tmp___0 = __VERIFIER_nondet_int() [L262] COND FALSE !(\read(tmp___0)) [L270] tmp___2 = __VERIFIER_nondet_int() [L272] COND TRUE \read(tmp___2) [L285] CALL timeShift() [L103] COND FALSE !(\read(pumpRunning)) [L110] COND TRUE \read(systemActive) [L112] CALL processEnvironment() [L132] int tmp ; [L135] COND FALSE !(\read(pumpRunning)) [L150] FCALL processEnvironment__wrappee__base() [L112] RET processEnvironment() [L118] CALL __utac_acc__Specification3_spec__1() [L841] int tmp ; [L842] int tmp___0 ; [L843] int tmp___1 ; [L847] CALL, EXPR isMethaneLevelCritical() [L799] int retValue_acc ; [L802] retValue_acc = methaneLevelCritical [L803] return (retValue_acc); [L847] RET, EXPR isMethaneLevelCritical() [L847] tmp = isMethaneLevelCritical() [L849] COND FALSE !(\read(tmp)) [L853] CALL, EXPR getWaterLevel() [L831] int retValue_acc ; [L834] retValue_acc = waterLevel [L835] return (retValue_acc); [L853] RET, EXPR getWaterLevel() [L853] tmp___0 = getWaterLevel() [L855] COND TRUE tmp___0 == 2 [L857] CALL, EXPR isPumpRunning() [L184] int retValue_acc ; [L187] retValue_acc = pumpRunning [L188] return (retValue_acc); [L857] RET, EXPR isPumpRunning() [L857] tmp___1 = isPumpRunning() [L859] COND FALSE !(\read(tmp___1)) [L863] CALL __automaton_fail() [L82] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 35 procedures, 207 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 10.6s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 7.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 431 SDtfs, 689 SDslu, 236 SDs, 0 SdLazy, 1251 SolverSat, 420 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 134 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 3.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=166occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 5 MinimizatonAttempts, 134 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 369 NumberOfCodeBlocks, 369 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 295 ConstructedInterpolants, 0 QuantifiedInterpolants, 84162 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...