/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product24.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 06:06:37,273 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 06:06:37,277 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 06:06:37,316 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 06:06:37,318 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 06:06:37,326 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 06:06:37,328 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 06:06:37,331 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 06:06:37,334 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 06:06:37,336 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 06:06:37,338 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 06:06:37,339 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 06:06:37,339 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 06:06:37,342 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 06:06:37,344 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 06:06:37,346 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 06:06:37,347 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 06:06:37,348 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 06:06:37,349 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 06:06:37,358 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 06:06:37,360 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 06:06:37,361 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 06:06:37,362 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 06:06:37,363 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 06:06:37,379 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 06:06:37,379 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 06:06:37,379 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 06:06:37,380 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 06:06:37,383 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 06:06:37,384 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 06:06:37,384 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 06:06:37,385 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 06:06:37,385 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 06:06:37,386 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 06:06:37,392 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 06:06:37,392 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 06:06:37,393 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 06:06:37,393 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 06:06:37,393 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 06:06:37,394 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 06:06:37,394 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 06:06:37,396 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 [2020-08-22 06:06:37,437 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 06:06:37,437 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 06:06:37,439 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 06:06:37,439 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 06:06:37,439 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 06:06:37,439 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 06:06:37,440 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 06:06:37,440 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 06:06:37,440 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 06:06:37,441 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 06:06:37,442 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 06:06:37,442 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 06:06:37,442 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 06:06:37,442 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 06:06:37,443 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 06:06:37,443 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 06:06:37,443 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 06:06:37,443 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 06:06:37,443 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 06:06:37,444 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 06:06:37,444 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 06:06:37,444 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 06:06:37,444 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 06:06:37,444 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 06:06:37,445 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 06:06:37,445 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 06:06:37,445 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 06:06:37,445 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 06:06:37,445 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 06:06:37,445 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=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-08-22 06:06:37,731 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 06:06:37,747 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 06:06:37,751 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 06:06:37,752 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 06:06:37,753 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 06:06:37,754 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product24.cil.c [2020-08-22 06:06:37,815 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/740da59f2/ed82a43865b54b408208687e4999e364/FLAGc3d25918a [2020-08-22 06:06:38,376 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 06:06:38,377 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product24.cil.c [2020-08-22 06:06:38,392 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/740da59f2/ed82a43865b54b408208687e4999e364/FLAGc3d25918a [2020-08-22 06:06:38,687 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/740da59f2/ed82a43865b54b408208687e4999e364 [2020-08-22 06:06:38,695 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 06:06:38,696 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 06:06:38,697 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 06:06:38,698 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 06:06:38,701 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 06:06:38,702 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:06:38" (1/1) ... [2020-08-22 06:06:38,706 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3210105d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:06:38, skipping insertion in model container [2020-08-22 06:06:38,706 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:06:38" (1/1) ... [2020-08-22 06:06:38,714 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 06:06:38,759 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 06:06:39,197 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 06:06:39,214 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 06:06:39,294 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 06:06:39,328 INFO L208 MainTranslator]: Completed translation [2020-08-22 06:06:39,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:06:39 WrapperNode [2020-08-22 06:06:39,329 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 06:06:39,329 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 06:06:39,329 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 06:06:39,330 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 06:06:39,341 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:06:39" (1/1) ... [2020-08-22 06:06:39,342 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:06:39" (1/1) ... [2020-08-22 06:06:39,361 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:06:39" (1/1) ... [2020-08-22 06:06:39,362 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:06:39" (1/1) ... [2020-08-22 06:06:39,416 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:06:39" (1/1) ... [2020-08-22 06:06:39,425 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:06:39" (1/1) ... [2020-08-22 06:06:39,430 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:06:39" (1/1) ... [2020-08-22 06:06:39,438 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 06:06:39,439 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 06:06:39,439 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 06:06:39,439 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 06:06:39,440 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:06:39" (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 [2020-08-22 06:06:39,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 06:06:39,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 06:06:39,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 06:06:39,514 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 06:06:39,515 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 06:06:39,515 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 06:06:39,515 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-22 06:06:39,515 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 06:06:39,515 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 06:06:39,516 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 06:06:39,516 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 06:06:39,516 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 06:06:39,517 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 06:06:39,517 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-22 06:06:39,517 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-22 06:06:39,518 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-22 06:06:39,518 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 06:06:39,518 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-22 06:06:39,518 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 06:06:39,518 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 06:06:39,519 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 06:06:39,519 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 06:06:39,519 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 06:06:39,519 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 06:06:39,519 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 06:06:39,520 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 06:06:39,520 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 06:06:39,520 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 06:06:39,521 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 06:06:39,521 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 06:06:39,521 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 06:06:39,521 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 06:06:39,521 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 06:06:39,521 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 06:06:39,522 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 06:06:39,522 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-22 06:06:39,522 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 06:06:39,522 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 06:06:39,522 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 06:06:39,522 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 06:06:39,522 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 06:06:39,523 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 06:06:39,523 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 06:06:39,523 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 06:06:39,523 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 06:06:39,523 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 06:06:39,523 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 06:06:39,524 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-22 06:06:39,524 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 06:06:39,524 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 06:06:39,524 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 06:06:39,524 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 06:06:39,525 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 06:06:39,525 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-22 06:06:39,525 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-22 06:06:39,525 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-22 06:06:39,525 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 06:06:39,526 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 06:06:39,526 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-22 06:06:39,526 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-22 06:06:39,526 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 06:06:39,526 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 06:06:39,526 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 06:06:39,526 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 06:06:39,527 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 06:06:39,527 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 06:06:39,527 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 06:06:39,527 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 06:06:39,527 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 06:06:39,527 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 06:06:39,527 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 06:06:39,528 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 06:06:39,529 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 06:06:39,529 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 06:06:39,530 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 06:06:39,530 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 06:06:39,530 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 06:06:39,530 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 06:06:39,531 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 06:06:39,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 06:06:39,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 06:06:39,532 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 06:06:39,532 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 06:06:39,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 06:06:39,533 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 06:06:39,533 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 06:06:39,533 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 06:06:39,533 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 06:06:39,534 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 06:06:39,534 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 06:06:39,535 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 06:06:39,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 06:06:39,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 06:06:39,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 06:06:40,570 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 06:06:40,571 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 06:06:40,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:06:40 BoogieIcfgContainer [2020-08-22 06:06:40,576 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 06:06:40,578 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 06:06:40,578 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 06:06:40,581 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 06:06:40,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 06:06:38" (1/3) ... [2020-08-22 06:06:40,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7487a44b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:06:40, skipping insertion in model container [2020-08-22 06:06:40,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:06:39" (2/3) ... [2020-08-22 06:06:40,583 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7487a44b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:06:40, skipping insertion in model container [2020-08-22 06:06:40,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:06:40" (3/3) ... [2020-08-22 06:06:40,585 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product24.cil.c [2020-08-22 06:06:40,596 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 06:06:40,607 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 06:06:40,621 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 06:06:40,654 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 06:06:40,654 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 06:06:40,654 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 06:06:40,655 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 06:06:40,655 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 06:06:40,655 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 06:06:40,655 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 06:06:40,656 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 06:06:40,686 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states. [2020-08-22 06:06:40,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-22 06:06:40,697 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:06:40,698 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] [2020-08-22 06:06:40,698 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:06:40,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:06:40,705 INFO L82 PathProgramCache]: Analyzing trace with hash -586231627, now seen corresponding path program 1 times [2020-08-22 06:06:40,714 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:06:40,715 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1284299124] [2020-08-22 06:06:40,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:06:40,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:41,406 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 06:06:41,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:06:41,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:41,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:06:41,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:41,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 06:06:41,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:41,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:06:41,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:41,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 06:06:41,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:41,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 06:06:41,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:41,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 06:06:41,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:41,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 06:06:41,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:41,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 06:06:41,523 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1284299124] [2020-08-22 06:06:41,525 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:06:41,525 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 06:06:41,526 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324692973] [2020-08-22 06:06:41,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 06:06:41,533 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:06:41,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 06:06:41,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 06:06:41,551 INFO L87 Difference]: Start difference. First operand 178 states. Second operand 3 states. [2020-08-22 06:06:42,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:06:42,833 INFO L93 Difference]: Finished difference Result 314 states and 413 transitions. [2020-08-22 06:06:42,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 06:06:42,836 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-22 06:06:42,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:06:42,865 INFO L225 Difference]: With dead ends: 314 [2020-08-22 06:06:42,866 INFO L226 Difference]: Without dead ends: 170 [2020-08-22 06:06:42,873 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 [2020-08-22 06:06:42,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-08-22 06:06:43,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 135. [2020-08-22 06:06:43,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-08-22 06:06:43,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 160 transitions. [2020-08-22 06:06:43,025 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 160 transitions. Word has length 52 [2020-08-22 06:06:43,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:06:43,026 INFO L479 AbstractCegarLoop]: Abstraction has 135 states and 160 transitions. [2020-08-22 06:06:43,026 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 06:06:43,027 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 160 transitions. [2020-08-22 06:06:43,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-22 06:06:43,040 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:06:43,040 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] [2020-08-22 06:06:43,040 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 06:06:43,041 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:06:43,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:06:43,041 INFO L82 PathProgramCache]: Analyzing trace with hash 1405243585, now seen corresponding path program 1 times [2020-08-22 06:06:43,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:06:43,042 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1004773739] [2020-08-22 06:06:43,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:06:43,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:43,410 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 06:06:43,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:06:43,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:43,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:06:43,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:43,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 06:06:43,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:43,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:06:43,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:43,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 06:06:43,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:43,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 06:06:43,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:43,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 06:06:43,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:43,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 06:06:43,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:43,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 06:06:43,457 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1004773739] [2020-08-22 06:06:43,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:06:43,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 06:06:43,458 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678009294] [2020-08-22 06:06:43,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 06:06:43,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:06:43,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 06:06:43,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 06:06:43,461 INFO L87 Difference]: Start difference. First operand 135 states and 160 transitions. Second operand 4 states. [2020-08-22 06:06:43,871 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 06:06:44,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:06:44,740 INFO L93 Difference]: Finished difference Result 237 states and 292 transitions. [2020-08-22 06:06:44,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 06:06:44,741 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-22 06:06:44,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:06:44,746 INFO L225 Difference]: With dead ends: 237 [2020-08-22 06:06:44,746 INFO L226 Difference]: Without dead ends: 154 [2020-08-22 06:06:44,748 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 [2020-08-22 06:06:44,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-08-22 06:06:44,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 126. [2020-08-22 06:06:44,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-08-22 06:06:44,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 148 transitions. [2020-08-22 06:06:44,788 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 148 transitions. Word has length 53 [2020-08-22 06:06:44,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:06:44,788 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 148 transitions. [2020-08-22 06:06:44,788 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 06:06:44,788 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 148 transitions. [2020-08-22 06:06:44,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-22 06:06:44,791 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:06:44,791 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:06:44,791 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 06:06:44,791 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:06:44,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:06:44,792 INFO L82 PathProgramCache]: Analyzing trace with hash 340068721, now seen corresponding path program 1 times [2020-08-22 06:06:44,792 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:06:44,792 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2090387415] [2020-08-22 06:06:44,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:06:44,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:45,176 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 06:06:45,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:06:45,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:45,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:06:45,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:45,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 06:06:45,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:45,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:06:45,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:45,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 06:06:45,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:45,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 06:06:45,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:45,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 06:06:45,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:45,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 06:06:45,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:45,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 06:06:45,247 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2090387415] [2020-08-22 06:06:45,248 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:06:45,248 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 06:06:45,248 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032601622] [2020-08-22 06:06:45,249 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 06:06:45,249 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:06:45,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 06:06:45,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 06:06:45,250 INFO L87 Difference]: Start difference. First operand 126 states and 148 transitions. Second operand 8 states. [2020-08-22 06:06:45,576 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 06:06:45,882 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 06:06:46,130 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 06:06:46,362 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 06:06:47,095 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 06:06:49,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:06:49,040 INFO L93 Difference]: Finished difference Result 439 states and 548 transitions. [2020-08-22 06:06:49,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 06:06:49,041 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-08-22 06:06:49,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:06:49,048 INFO L225 Difference]: With dead ends: 439 [2020-08-22 06:06:49,048 INFO L226 Difference]: Without dead ends: 337 [2020-08-22 06:06:49,051 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-22 06:06:49,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2020-08-22 06:06:49,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 272. [2020-08-22 06:06:49,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2020-08-22 06:06:49,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 331 transitions. [2020-08-22 06:06:49,129 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 331 transitions. Word has length 58 [2020-08-22 06:06:49,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:06:49,130 INFO L479 AbstractCegarLoop]: Abstraction has 272 states and 331 transitions. [2020-08-22 06:06:49,130 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 06:06:49,130 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 331 transitions. [2020-08-22 06:06:49,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-08-22 06:06:49,132 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:06:49,132 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:06:49,132 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 06:06:49,133 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:06:49,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:06:49,133 INFO L82 PathProgramCache]: Analyzing trace with hash -805179876, now seen corresponding path program 1 times [2020-08-22 06:06:49,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:06:49,133 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1319459424] [2020-08-22 06:06:49,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:06:49,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:49,459 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 06:06:49,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:06:49,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:49,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:06:49,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:49,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 06:06:49,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:49,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:06:49,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:49,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 06:06:49,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:49,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 06:06:49,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:49,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 06:06:49,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:49,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 06:06:49,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:49,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 06:06:49,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:49,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 06:06:49,534 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1319459424] [2020-08-22 06:06:49,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:06:49,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 06:06:49,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073816939] [2020-08-22 06:06:49,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 06:06:49,536 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:06:49,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 06:06:49,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 06:06:49,536 INFO L87 Difference]: Start difference. First operand 272 states and 331 transitions. Second operand 8 states. [2020-08-22 06:06:49,885 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 06:06:51,217 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 06:06:51,553 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 06:06:51,839 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 06:06:52,092 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 06:06:52,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:06:52,868 INFO L93 Difference]: Finished difference Result 839 states and 1103 transitions. [2020-08-22 06:06:52,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 06:06:52,869 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-08-22 06:06:52,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:06:52,876 INFO L225 Difference]: With dead ends: 839 [2020-08-22 06:06:52,876 INFO L226 Difference]: Without dead ends: 591 [2020-08-22 06:06:52,878 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-22 06:06:52,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2020-08-22 06:06:52,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 521. [2020-08-22 06:06:52,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 521 states. [2020-08-22 06:06:53,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 649 transitions. [2020-08-22 06:06:53,003 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 649 transitions. Word has length 63 [2020-08-22 06:06:53,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:06:53,003 INFO L479 AbstractCegarLoop]: Abstraction has 521 states and 649 transitions. [2020-08-22 06:06:53,004 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 06:06:53,004 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 649 transitions. [2020-08-22 06:06:53,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-22 06:06:53,006 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:06:53,007 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:06:53,007 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 06:06:53,007 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:06:53,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:06:53,008 INFO L82 PathProgramCache]: Analyzing trace with hash 1401738146, now seen corresponding path program 1 times [2020-08-22 06:06:53,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:06:53,008 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [586592028] [2020-08-22 06:06:53,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:06:53,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:53,269 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 06:06:53,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:06:53,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:53,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:06:53,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:53,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 06:06:53,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:53,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:06:53,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:53,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 06:06:53,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:53,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 06:06:53,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:53,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 06:06:53,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:53,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 06:06:53,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:53,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-22 06:06:53,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:53,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-22 06:06:53,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:53,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 06:06:53,356 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [586592028] [2020-08-22 06:06:53,356 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:06:53,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 06:06:53,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846040660] [2020-08-22 06:06:53,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 06:06:53,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:06:53,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 06:06:53,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 06:06:53,362 INFO L87 Difference]: Start difference. First operand 521 states and 649 transitions. Second operand 6 states. [2020-08-22 06:06:53,710 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 06:06:54,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:06:54,612 INFO L93 Difference]: Finished difference Result 890 states and 1163 transitions. [2020-08-22 06:06:54,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 06:06:54,612 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-08-22 06:06:54,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:06:54,616 INFO L225 Difference]: With dead ends: 890 [2020-08-22 06:06:54,616 INFO L226 Difference]: Without dead ends: 393 [2020-08-22 06:06:54,619 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-08-22 06:06:54,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2020-08-22 06:06:54,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 343. [2020-08-22 06:06:54,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2020-08-22 06:06:54,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 394 transitions. [2020-08-22 06:06:54,695 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 394 transitions. Word has length 67 [2020-08-22 06:06:54,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:06:54,695 INFO L479 AbstractCegarLoop]: Abstraction has 343 states and 394 transitions. [2020-08-22 06:06:54,695 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 06:06:54,696 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 394 transitions. [2020-08-22 06:06:54,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-22 06:06:54,697 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:06:54,697 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:06:54,698 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 06:06:54,698 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:06:54,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:06:54,698 INFO L82 PathProgramCache]: Analyzing trace with hash -1293290686, now seen corresponding path program 1 times [2020-08-22 06:06:54,699 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:06:54,699 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2024683768] [2020-08-22 06:06:54,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:06:54,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 06:06:54,758 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 06:06:54,759 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 06:06:54,763 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 06:06:54,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 06:06:54 BoogieIcfgContainer [2020-08-22 06:06:54,786 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 06:06:54,788 INFO L168 Benchmark]: Toolchain (without parser) took 16091.87 ms. Allocated memory was 140.5 MB in the beginning and 511.2 MB in the end (delta: 370.7 MB). Free memory was 103.1 MB in the beginning and 240.0 MB in the end (delta: -137.0 MB). Peak memory consumption was 233.7 MB. Max. memory is 7.1 GB. [2020-08-22 06:06:54,789 INFO L168 Benchmark]: CDTParser took 0.75 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 06:06:54,790 INFO L168 Benchmark]: CACSL2BoogieTranslator took 631.50 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 102.9 MB in the beginning and 168.0 MB in the end (delta: -65.2 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. [2020-08-22 06:06:54,791 INFO L168 Benchmark]: Boogie Preprocessor took 109.21 ms. Allocated memory is still 203.4 MB. Free memory was 168.0 MB in the beginning and 163.4 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB. [2020-08-22 06:06:54,792 INFO L168 Benchmark]: RCFGBuilder took 1137.76 ms. Allocated memory was 203.4 MB in the beginning and 237.0 MB in the end (delta: 33.6 MB). Free memory was 163.4 MB in the beginning and 192.2 MB in the end (delta: -28.9 MB). Peak memory consumption was 78.3 MB. Max. memory is 7.1 GB. [2020-08-22 06:06:54,793 INFO L168 Benchmark]: TraceAbstraction took 14208.48 ms. Allocated memory was 237.0 MB in the beginning and 511.2 MB in the end (delta: 274.2 MB). Free memory was 192.2 MB in the beginning and 240.0 MB in the end (delta: -47.8 MB). Peak memory consumption was 226.4 MB. Max. memory is 7.1 GB. [2020-08-22 06:06:54,797 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.75 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 631.50 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 102.9 MB in the beginning and 168.0 MB in the end (delta: -65.2 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 109.21 ms. Allocated memory is still 203.4 MB. Free memory was 168.0 MB in the beginning and 163.4 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1137.76 ms. Allocated memory was 203.4 MB in the beginning and 237.0 MB in the end (delta: 33.6 MB). Free memory was 163.4 MB in the beginning and 192.2 MB in the end (delta: -28.9 MB). Peak memory consumption was 78.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 14208.48 ms. Allocated memory was 237.0 MB in the beginning and 511.2 MB in the end (delta: 274.2 MB). Free memory was 192.2 MB in the beginning and 240.0 MB in the end (delta: -47.8 MB). Peak memory consumption was 226.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 44]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L60] int pumpRunning = 0; [L61] int systemActive = 1; [L369] int cleanupTimeShifts = 4; [L637] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L834] int waterLevel = 1; [L835] int methaneLevelCritical = 0; [L445] int retValue_acc ; [L446] int tmp ; [L450] FCALL select_helpers() [L451] FCALL select_features() [L452] CALL, EXPR valid_product() [L949] int retValue_acc ; [L952] retValue_acc = 1 [L953] return (retValue_acc); [L452] RET, EXPR valid_product() [L452] tmp = valid_product() [L454] COND TRUE \read(tmp) [L456] FCALL setup() [L457] CALL runTest() [L436] CALL test() [L266] int splverifierCounter ; [L267] int tmp ; [L268] int tmp___0 ; [L269] int tmp___1 ; [L270] int tmp___2 ; [L273] splverifierCounter = 0 [L275] COND TRUE 1 [L277] COND TRUE splverifierCounter < 4 [L283] tmp = __VERIFIER_nondet_int() [L285] COND TRUE \read(tmp) [L287] CALL waterRise() [L852] COND TRUE waterLevel < 2 [L853] waterLevel = waterLevel + 1 [L287] RET waterRise() [L293] tmp___0 = __VERIFIER_nondet_int() [L295] COND FALSE !(\read(tmp___0)) [L303] tmp___2 = __VERIFIER_nondet_int() [L305] COND FALSE !(\read(tmp___2)) [L311] tmp___1 = __VERIFIER_nondet_int() [L313] COND TRUE \read(tmp___1) [L315] CALL stopSystem() [L242] COND FALSE !(\read(pumpRunning)) [L249] systemActive = 0 [L315] RET stopSystem() [L322] CALL timeShift() [L68] COND FALSE !(\read(pumpRunning)) [L75] COND FALSE !(\read(systemActive)) [L83] CALL __utac_acc__Specification3_spec__1() [L336] int tmp ; [L337] int tmp___0 ; [L338] int tmp___1 ; [L342] CALL, EXPR isMethaneLevelCritical() [L873] int retValue_acc ; [L876] retValue_acc = methaneLevelCritical [L877] return (retValue_acc); [L342] RET, EXPR isMethaneLevelCritical() [L342] tmp = isMethaneLevelCritical() [L344] COND FALSE !(\read(tmp)) [L348] CALL, EXPR getWaterLevel() [L905] int retValue_acc ; [L908] retValue_acc = waterLevel [L909] return (retValue_acc); [L348] RET, EXPR getWaterLevel() [L348] tmp___0 = getWaterLevel() [L350] COND TRUE tmp___0 == 2 [L352] CALL, EXPR isPumpRunning() [L175] int retValue_acc ; [L178] retValue_acc = pumpRunning [L179] return (retValue_acc); [L352] RET, EXPR isPumpRunning() [L352] tmp___1 = isPumpRunning() [L354] COND FALSE !(\read(tmp___1)) [L358] CALL __automaton_fail() [L44] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 237 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 14.1s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 11.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 593 SDtfs, 897 SDslu, 441 SDs, 0 SdLazy, 2178 SolverSat, 577 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 134 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 3.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=521occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 5 MinimizatonAttempts, 248 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 360 NumberOfCodeBlocks, 360 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 288 ConstructedInterpolants, 0 QuantifiedInterpolants, 82716 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...