/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product21.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 18:57:13,959 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 18:57:13,963 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 18:57:14,020 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 18:57:14,020 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 18:57:14,024 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 18:57:14,028 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 18:57:14,035 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 18:57:14,039 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 18:57:14,045 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 18:57:14,046 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 18:57:14,048 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 18:57:14,048 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 18:57:14,051 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 18:57:14,053 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 18:57:14,055 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 18:57:14,058 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 18:57:14,059 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 18:57:14,074 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 18:57:14,081 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 18:57:14,083 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 18:57:14,085 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 18:57:14,087 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 18:57:14,089 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 18:57:14,097 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 18:57:14,097 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 18:57:14,098 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 18:57:14,100 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 18:57:14,100 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 18:57:14,101 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 18:57:14,102 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 18:57:14,102 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 18:57:14,104 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 18:57:14,105 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 18:57:14,106 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 18:57:14,106 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 18:57:14,107 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 18:57:14,107 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 18:57:14,108 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 18:57:14,108 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 18:57:14,109 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 18:57:14,110 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 18:57:14,134 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 18:57:14,135 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 18:57:14,139 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 18:57:14,139 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 18:57:14,139 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 18:57:14,140 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 18:57:14,140 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 18:57:14,140 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 18:57:14,140 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 18:57:14,140 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 18:57:14,142 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 18:57:14,142 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 18:57:14,142 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 18:57:14,143 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 18:57:14,143 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 18:57:14,143 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 18:57:14,143 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 18:57:14,144 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 18:57:14,144 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 18:57:14,144 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 18:57:14,144 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 18:57:14,144 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 18:57:14,145 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 18:57:14,553 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 18:57:14,586 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 18:57:14,589 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 18:57:14,591 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 18:57:14,591 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 18:57:14,592 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product21.cil.c [2021-02-21 18:57:14,670 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a423324a3/86d1bd3438b041e2aa42719472a2e692/FLAGd966ccefa [2021-02-21 18:57:15,305 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 18:57:15,306 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product21.cil.c [2021-02-21 18:57:15,324 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a423324a3/86d1bd3438b041e2aa42719472a2e692/FLAGd966ccefa [2021-02-21 18:57:15,619 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a423324a3/86d1bd3438b041e2aa42719472a2e692 [2021-02-21 18:57:15,622 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 18:57:15,636 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 18:57:15,640 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 18:57:15,640 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 18:57:15,644 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 18:57:15,645 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 06:57:15" (1/1) ... [2021-02-21 18:57:15,646 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71f70c03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:57:15, skipping insertion in model container [2021-02-21 18:57:15,647 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 06:57:15" (1/1) ... [2021-02-21 18:57:15,655 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 18:57:15,726 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 18:57:16,021 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product21.cil.c[13493,13506] [2021-02-21 18:57:16,049 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 18:57:16,061 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 18:57:16,179 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product21.cil.c[13493,13506] [2021-02-21 18:57:16,213 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 18:57:16,274 INFO L208 MainTranslator]: Completed translation [2021-02-21 18:57:16,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:57:16 WrapperNode [2021-02-21 18:57:16,274 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 18:57:16,276 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 18:57:16,276 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 18:57:16,276 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 18:57:16,290 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:57:16" (1/1) ... [2021-02-21 18:57:16,291 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:57:16" (1/1) ... [2021-02-21 18:57:16,310 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:57:16" (1/1) ... [2021-02-21 18:57:16,310 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:57:16" (1/1) ... [2021-02-21 18:57:16,344 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:57:16" (1/1) ... [2021-02-21 18:57:16,363 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:57:16" (1/1) ... [2021-02-21 18:57:16,377 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:57:16" (1/1) ... [2021-02-21 18:57:16,391 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 18:57:16,392 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 18:57:16,392 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 18:57:16,395 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 18:57:16,396 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:57:16" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2021-02-21 18:57:16,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 18:57:16,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 18:57:16,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-21 18:57:16,538 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 18:57:16,538 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-21 18:57:16,538 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-21 18:57:16,538 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-21 18:57:16,538 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-21 18:57:16,538 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-21 18:57:16,539 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-21 18:57:16,539 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-21 18:57:16,539 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-21 18:57:16,539 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2021-02-21 18:57:16,539 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-21 18:57:16,539 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-21 18:57:16,540 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-21 18:57:16,540 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-21 18:57:16,540 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-21 18:57:16,540 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-21 18:57:16,540 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2021-02-21 18:57:16,540 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-21 18:57:16,541 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-21 18:57:16,541 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-21 18:57:16,541 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-21 18:57:16,541 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-21 18:57:16,541 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-21 18:57:16,541 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-21 18:57:16,542 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-21 18:57:16,542 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2021-02-21 18:57:16,542 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-21 18:57:16,542 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-21 18:57:16,542 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-21 18:57:16,542 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-21 18:57:16,542 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 18:57:16,543 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2021-02-21 18:57:16,543 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-21 18:57:16,543 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-21 18:57:16,543 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-21 18:57:16,543 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-21 18:57:16,543 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 18:57:16,544 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 18:57:16,544 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 18:57:16,544 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 18:57:16,544 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 18:57:16,544 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-21 18:57:16,544 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 18:57:16,544 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 18:57:16,545 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-21 18:57:16,545 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 18:57:16,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 18:57:16,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 18:57:16,545 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 18:57:16,545 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-21 18:57:16,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 18:57:16,545 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-21 18:57:16,546 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-21 18:57:16,546 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 18:57:16,546 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-21 18:57:16,546 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-21 18:57:16,546 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-21 18:57:16,546 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-21 18:57:16,546 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-21 18:57:16,547 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-21 18:57:16,547 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2021-02-21 18:57:16,547 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-21 18:57:16,547 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-21 18:57:16,547 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-21 18:57:16,547 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-21 18:57:16,547 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-21 18:57:16,548 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2021-02-21 18:57:16,548 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-21 18:57:16,548 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-21 18:57:16,548 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2021-02-21 18:57:16,548 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2021-02-21 18:57:16,548 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-21 18:57:16,548 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-21 18:57:16,549 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-21 18:57:16,549 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-21 18:57:16,549 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-21 18:57:16,549 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-21 18:57:16,549 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-21 18:57:16,549 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-21 18:57:16,549 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-21 18:57:16,550 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-21 18:57:16,550 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-21 18:57:16,550 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-21 18:57:16,550 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-21 18:57:16,550 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 18:57:16,550 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-21 18:57:16,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 18:57:16,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 18:57:16,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 18:57:17,852 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 18:57:17,852 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-21 18:57:17,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 06:57:17 BoogieIcfgContainer [2021-02-21 18:57:17,855 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 18:57:17,857 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 18:57:17,857 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 18:57:17,861 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 18:57:17,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 06:57:15" (1/3) ... [2021-02-21 18:57:17,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@afaa6e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 06:57:17, skipping insertion in model container [2021-02-21 18:57:17,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:57:16" (2/3) ... [2021-02-21 18:57:17,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@afaa6e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 06:57:17, skipping insertion in model container [2021-02-21 18:57:17,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 06:57:17" (3/3) ... [2021-02-21 18:57:17,864 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product21.cil.c [2021-02-21 18:57:17,871 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 18:57:17,877 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 18:57:17,896 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 18:57:17,920 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 18:57:17,920 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 18:57:17,921 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 18:57:17,921 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 18:57:17,921 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 18:57:17,921 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 18:57:17,921 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 18:57:17,921 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 18:57:17,947 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2021-02-21 18:57:17,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-02-21 18:57:17,968 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:57:17,969 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 18:57:17,969 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:57:17,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:57:17,975 INFO L82 PathProgramCache]: Analyzing trace with hash -843989000, now seen corresponding path program 1 times [2021-02-21 18:57:17,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:57:17,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1787511299] [2021-02-21 18:57:17,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:57:18,060 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:57:18,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:18,471 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:18,473 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:18,474 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:18,474 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:18,799 WARN L202 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:57:18,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:57:18,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:18,918 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:18,918 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:18,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:57:18,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:18,937 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:18,938 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:18,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:57:18,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:18,941 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:18,941 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:18,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:57:18,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:18,945 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:18,945 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:18,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:57:18,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:18,948 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:18,949 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:18,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-21 18:57:18,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:18,952 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:18,953 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:18,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 18:57:18,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:18,956 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:18,957 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:18,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-21 18:57:18,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:18,960 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:18,961 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:19,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:57:19,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1787511299] [2021-02-21 18:57:19,036 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:57:19,036 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 18:57:19,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087535822] [2021-02-21 18:57:19,042 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 18:57:19,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:57:19,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 18:57:19,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 18:57:19,060 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 3 states. [2021-02-21 18:57:20,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:57:20,886 INFO L93 Difference]: Finished difference Result 483 states and 576 transitions. [2021-02-21 18:57:20,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 18:57:20,889 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2021-02-21 18:57:20,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:57:20,906 INFO L225 Difference]: With dead ends: 483 [2021-02-21 18:57:20,906 INFO L226 Difference]: Without dead ends: 301 [2021-02-21 18:57:20,917 INFO L677 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 [2021-02-21 18:57:20,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2021-02-21 18:57:21,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 260. [2021-02-21 18:57:21,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2021-02-21 18:57:21,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 283 transitions. [2021-02-21 18:57:21,148 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 283 transitions. Word has length 158 [2021-02-21 18:57:21,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:57:21,151 INFO L480 AbstractCegarLoop]: Abstraction has 260 states and 283 transitions. [2021-02-21 18:57:21,151 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 18:57:21,151 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 283 transitions. [2021-02-21 18:57:21,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-02-21 18:57:21,168 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:57:21,169 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 18:57:21,170 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 18:57:21,170 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:57:21,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:57:21,171 INFO L82 PathProgramCache]: Analyzing trace with hash 32784274, now seen corresponding path program 1 times [2021-02-21 18:57:21,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:57:21,173 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [340095931] [2021-02-21 18:57:21,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:57:21,178 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:57:21,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:21,296 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:21,297 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:21,298 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:21,298 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:57:21,302 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:21,302 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:21,618 WARN L202 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:57:21,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:57:21,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:21,661 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:21,661 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:21,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:57:21,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:21,670 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:21,671 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:21,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:57:21,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:21,673 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:21,674 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:21,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:57:21,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:21,676 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:21,677 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:21,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:57:21,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:21,679 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:21,680 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:21,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-02-21 18:57:21,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:21,682 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:21,684 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:21,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-21 18:57:21,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:21,687 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:21,688 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:21,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-21 18:57:21,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:21,692 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:21,693 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:21,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:57:21,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [340095931] [2021-02-21 18:57:21,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:57:21,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 18:57:21,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960715161] [2021-02-21 18:57:21,752 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 18:57:21,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:57:21,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 18:57:21,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 18:57:21,753 INFO L87 Difference]: Start difference. First operand 260 states and 283 transitions. Second operand 4 states. [2021-02-21 18:57:22,466 WARN L202 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:57:23,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:57:23,578 INFO L93 Difference]: Finished difference Result 399 states and 450 transitions. [2021-02-21 18:57:23,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 18:57:23,578 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2021-02-21 18:57:23,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:57:23,583 INFO L225 Difference]: With dead ends: 399 [2021-02-21 18:57:23,583 INFO L226 Difference]: Without dead ends: 284 [2021-02-21 18:57:23,586 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-21 18:57:23,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2021-02-21 18:57:23,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 250. [2021-02-21 18:57:23,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2021-02-21 18:57:23,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 270 transitions. [2021-02-21 18:57:23,718 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 270 transitions. Word has length 159 [2021-02-21 18:57:23,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:57:23,721 INFO L480 AbstractCegarLoop]: Abstraction has 250 states and 270 transitions. [2021-02-21 18:57:23,721 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 18:57:23,721 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 270 transitions. [2021-02-21 18:57:23,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-02-21 18:57:23,746 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:57:23,746 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 18:57:23,746 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 18:57:23,747 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:57:23,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:57:23,753 INFO L82 PathProgramCache]: Analyzing trace with hash 98733047, now seen corresponding path program 1 times [2021-02-21 18:57:23,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:57:23,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1312606856] [2021-02-21 18:57:23,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:57:23,759 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:57:23,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:23,903 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:23,904 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:57:23,908 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:23,908 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:57:23,914 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:23,915 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:57:23,920 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:23,921 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 18:57:23,928 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:23,929 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:24,232 WARN L202 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:57:24,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:57:24,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:24,282 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:24,283 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:24,284 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:24,284 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 18:57:24,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:57:24,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:24,302 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:24,303 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:24,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:57:24,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:24,305 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:24,306 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:24,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:57:24,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:24,317 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:24,318 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:24,325 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:24,326 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:57:24,344 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-21 18:57:24,346 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-21 18:57:24,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:57:24,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:24,364 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:24,365 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:24,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 18:57:24,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:24,375 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:24,376 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:24,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-21 18:57:24,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:24,379 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:24,380 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:24,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-02-21 18:57:24,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:24,390 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:24,390 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:24,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:57:24,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1312606856] [2021-02-21 18:57:24,435 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:57:24,436 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-21 18:57:24,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598801535] [2021-02-21 18:57:24,438 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-21 18:57:24,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:57:24,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-21 18:57:24,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-21 18:57:24,445 INFO L87 Difference]: Start difference. First operand 250 states and 270 transitions. Second operand 9 states. [2021-02-21 18:57:25,135 WARN L202 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:57:25,551 WARN L202 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:57:25,924 WARN L202 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:57:26,274 WARN L202 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:57:26,637 WARN L202 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:57:26,999 WARN L202 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:57:28,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:57:28,621 INFO L93 Difference]: Finished difference Result 419 states and 475 transitions. [2021-02-21 18:57:28,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-21 18:57:28,622 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 168 [2021-02-21 18:57:28,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:57:28,626 INFO L225 Difference]: With dead ends: 419 [2021-02-21 18:57:28,626 INFO L226 Difference]: Without dead ends: 284 [2021-02-21 18:57:28,628 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-02-21 18:57:28,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2021-02-21 18:57:28,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 250. [2021-02-21 18:57:28,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2021-02-21 18:57:28,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 269 transitions. [2021-02-21 18:57:28,730 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 269 transitions. Word has length 168 [2021-02-21 18:57:28,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:57:28,731 INFO L480 AbstractCegarLoop]: Abstraction has 250 states and 269 transitions. [2021-02-21 18:57:28,731 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-21 18:57:28,731 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 269 transitions. [2021-02-21 18:57:28,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-02-21 18:57:28,734 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:57:28,734 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 18:57:28,735 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 18:57:28,735 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:57:28,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:57:28,735 INFO L82 PathProgramCache]: Analyzing trace with hash 345662228, now seen corresponding path program 1 times [2021-02-21 18:57:28,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:57:28,736 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1593391776] [2021-02-21 18:57:28,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:57:28,739 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:57:28,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:28,806 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:28,807 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:57:28,810 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:28,810 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:57:28,811 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:28,811 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:57:28,812 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:28,812 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:57:28,813 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:28,814 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:57:28,814 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:28,815 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:57:28,820 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:28,821 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:57:28,826 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:28,826 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:29,113 WARN L202 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:57:29,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:57:29,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:29,169 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:29,170 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:29,195 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:29,198 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 18:57:29,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:57:29,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:29,209 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:29,210 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:29,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:57:29,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:29,214 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:29,214 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:29,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:57:29,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:29,218 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:29,218 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:29,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:57:29,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:29,222 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:29,223 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:29,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-02-21 18:57:29,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:29,235 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:29,236 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:29,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:57:29,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:29,239 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:29,240 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:29,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:57:29,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:29,242 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:29,243 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:29,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-21 18:57:29,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:29,246 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:29,247 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:29,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-02-21 18:57:29,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:29,253 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:29,253 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:29,254 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:29,254 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:57:29,265 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:29,266 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:57:29,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-02-21 18:57:29,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:29,282 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:29,282 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:29,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:57:29,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1593391776] [2021-02-21 18:57:29,362 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:57:29,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-21 18:57:29,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947285828] [2021-02-21 18:57:29,363 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-21 18:57:29,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:57:29,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-21 18:57:29,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-21 18:57:29,369 INFO L87 Difference]: Start difference. First operand 250 states and 269 transitions. Second operand 9 states. [2021-02-21 18:57:29,995 WARN L202 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:57:32,415 WARN L202 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:57:32,809 WARN L202 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:57:33,175 WARN L202 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:57:33,538 WARN L202 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:57:33,905 WARN L202 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:57:34,452 WARN L202 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:57:34,844 WARN L202 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:57:35,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:57:35,256 INFO L93 Difference]: Finished difference Result 591 states and 699 transitions. [2021-02-21 18:57:35,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-21 18:57:35,257 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 181 [2021-02-21 18:57:35,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:57:35,266 INFO L225 Difference]: With dead ends: 591 [2021-02-21 18:57:35,266 INFO L226 Difference]: Without dead ends: 456 [2021-02-21 18:57:35,267 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2021-02-21 18:57:35,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2021-02-21 18:57:35,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 379. [2021-02-21 18:57:35,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2021-02-21 18:57:35,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 421 transitions. [2021-02-21 18:57:35,422 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 421 transitions. Word has length 181 [2021-02-21 18:57:35,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:57:35,423 INFO L480 AbstractCegarLoop]: Abstraction has 379 states and 421 transitions. [2021-02-21 18:57:35,423 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-21 18:57:35,423 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 421 transitions. [2021-02-21 18:57:35,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-02-21 18:57:35,426 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:57:35,427 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 18:57:35,427 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 18:57:35,427 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:57:35,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:57:35,428 INFO L82 PathProgramCache]: Analyzing trace with hash -88277322, now seen corresponding path program 1 times [2021-02-21 18:57:35,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:57:35,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [77007538] [2021-02-21 18:57:35,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:57:35,431 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:57:35,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 18:57:35,513 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 18:57:35,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 18:57:35,598 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 18:57:35,886 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-21 18:57:35,886 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 18:57:35,887 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 18:57:35,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 06:57:35 BoogieIcfgContainer [2021-02-21 18:57:35,911 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 18:57:35,912 INFO L168 Benchmark]: Toolchain (without parser) took 20288.38 ms. Allocated memory was 154.1 MB in the beginning and 412.1 MB in the end (delta: 257.9 MB). Free memory was 129.3 MB in the beginning and 209.2 MB in the end (delta: -79.9 MB). Peak memory consumption was 179.4 MB. Max. memory is 8.0 GB. [2021-02-21 18:57:35,913 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 154.1 MB. Free memory is still 127.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 18:57:35,913 INFO L168 Benchmark]: CACSL2BoogieTranslator took 635.19 ms. Allocated memory is still 154.1 MB. Free memory was 128.2 MB in the beginning and 107.7 MB in the end (delta: 20.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2021-02-21 18:57:35,914 INFO L168 Benchmark]: Boogie Preprocessor took 115.25 ms. Allocated memory is still 154.1 MB. Free memory was 107.7 MB in the beginning and 103.8 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-02-21 18:57:35,914 INFO L168 Benchmark]: RCFGBuilder took 1463.73 ms. Allocated memory was 154.1 MB in the beginning and 185.6 MB in the end (delta: 31.5 MB). Free memory was 103.7 MB in the beginning and 118.0 MB in the end (delta: -14.3 MB). Peak memory consumption was 26.3 MB. Max. memory is 8.0 GB. [2021-02-21 18:57:35,915 INFO L168 Benchmark]: TraceAbstraction took 18054.02 ms. Allocated memory was 185.6 MB in the beginning and 412.1 MB in the end (delta: 226.5 MB). Free memory was 117.5 MB in the beginning and 209.2 MB in the end (delta: -91.7 MB). Peak memory consumption was 135.3 MB. Max. memory is 8.0 GB. [2021-02-21 18:57:35,917 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 154.1 MB. Free memory is still 127.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 635.19 ms. Allocated memory is still 154.1 MB. Free memory was 128.2 MB in the beginning and 107.7 MB in the end (delta: 20.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 115.25 ms. Allocated memory is still 154.1 MB. Free memory was 107.7 MB in the beginning and 103.8 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1463.73 ms. Allocated memory was 154.1 MB in the beginning and 185.6 MB in the end (delta: 31.5 MB). Free memory was 103.7 MB in the beginning and 118.0 MB in the end (delta: -14.3 MB). Peak memory consumption was 26.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 18054.02 ms. Allocated memory was 185.6 MB in the beginning and 412.1 MB in the end (delta: 226.5 MB). Free memory was 117.5 MB in the beginning and 209.2 MB in the end (delta: -91.7 MB). Peak memory consumption was 135.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 600]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L211] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L417] int pumpRunning = 0; [L418] int systemActive = 1; [L674] int waterLevel = 1; [L675] int methaneLevelCritical = 0; [L763] int cleanupTimeShifts = 4; [L839] int retValue_acc ; [L840] int tmp ; [L844] FCALL select_helpers() [L845] FCALL select_features() [L846] CALL, EXPR valid_product() [L922] int retValue_acc ; [L925] retValue_acc = 1 [L926] return (retValue_acc); [L846] RET, EXPR valid_product() [L846] tmp = valid_product() [L848] COND TRUE \read(tmp) [L850] FCALL setup() [L851] CALL runTest() [L830] CALL test() [L609] int splverifierCounter ; [L610] int tmp ; [L611] int tmp___0 ; [L612] int tmp___1 ; [L613] int tmp___2 ; [L616] splverifierCounter = 0 [L618] COND TRUE 1 [L620] COND TRUE splverifierCounter < 4 [L626] tmp = __VERIFIER_nondet_int() [L628] COND TRUE \read(tmp) [L630] CALL waterRise() [L692] COND TRUE waterLevel < 2 [L693] waterLevel = waterLevel + 1 [L630] RET waterRise() [L636] tmp___0 = __VERIFIER_nondet_int() [L638] COND FALSE !(\read(tmp___0)) [L646] tmp___2 = __VERIFIER_nondet_int() [L648] COND TRUE \read(tmp___2) [L661] CALL timeShift() [L425] COND FALSE !(\read(pumpRunning)) [L432] COND TRUE \read(systemActive) [L434] CALL processEnvironment() [L480] int tmp ; [L483] COND FALSE !(\read(pumpRunning)) [L498] CALL processEnvironment__wrappee__lowWaterSensor() [L454] int tmp ; [L457] COND FALSE !(\read(pumpRunning)) [L472] FCALL processEnvironment__wrappee__base() [L498] RET processEnvironment__wrappee__lowWaterSensor() [L434] RET processEnvironment() [L440] CALL __utac_acc__Specification3_spec__1() [L863] int tmp ; [L864] int tmp___0 ; [L865] int tmp___1 ; [L869] CALL, EXPR isMethaneLevelCritical() [L713] int retValue_acc ; [L716] retValue_acc = methaneLevelCritical [L717] return (retValue_acc); [L869] RET, EXPR isMethaneLevelCritical() [L869] tmp = isMethaneLevelCritical() [L871] COND FALSE !(\read(tmp)) [L875] CALL, EXPR getWaterLevel() [L745] int retValue_acc ; [L748] retValue_acc = waterLevel [L749] return (retValue_acc); [L875] RET, EXPR getWaterLevel() [L875] tmp___0 = getWaterLevel() [L877] COND TRUE tmp___0 == 2 [L879] CALL, EXPR isPumpRunning() [L532] int retValue_acc ; [L535] retValue_acc = pumpRunning [L536] return (retValue_acc); [L879] RET, EXPR isPumpRunning() [L879] tmp___1 = isPumpRunning() [L881] COND FALSE !(\read(tmp___1)) [L885] CALL __automaton_fail() [L600] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 630 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 17.9s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 13.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 954 SDtfs, 1178 SDslu, 1183 SDs, 0 SdLazy, 2573 SolverSat, 387 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 112 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 6.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=379occurred 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: 0.6s AutomataMinimizationTime, 4 MinimizatonAttempts, 186 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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...