/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/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product06.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 03:26:55,949 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 03:26:55,952 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 03:26:56,012 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-24 03:26:56,012 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-24 03:26:56,017 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-24 03:26:56,020 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-24 03:26:56,028 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-24 03:26:56,032 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-24 03:26:56,034 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-24 03:26:56,038 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-24 03:26:56,040 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-24 03:26:56,042 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 03:26:56,044 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 03:26:56,047 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 03:26:56,049 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 03:26:56,060 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 03:26:56,062 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 03:26:56,064 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 03:26:56,066 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 03:26:56,068 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 03:26:56,070 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 03:26:56,071 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 03:26:56,072 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 03:26:56,080 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-24 03:26:56,080 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-24 03:26:56,080 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-24 03:26:56,081 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-24 03:26:56,082 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-24 03:26:56,084 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-24 03:26:56,084 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-24 03:26:56,085 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-24 03:26:56,086 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-24 03:26:56,088 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-24 03:26:56,089 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-24 03:26:56,089 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-24 03:26:56,090 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-24 03:26:56,090 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-24 03:26:56,090 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 03:26:56,091 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 03:26:56,093 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 03:26:56,094 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-24 03:26:56,119 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 03:26:56,119 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 03:26:56,124 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 03:26:56,125 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 03:26:56,125 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 03:26:56,125 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 03:26:56,125 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 03:26:56,125 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 03:26:56,126 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 03:26:56,126 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 03:26:56,127 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 03:26:56,127 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 03:26:56,128 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 03:26:56,128 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 03:26:56,128 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 03:26:56,129 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 03:26:56,129 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 03:26:56,129 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 03:26:56,129 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 03:26:56,129 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 03:26:56,130 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 03:26:56,130 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 03:26:56,130 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-24 03:26:56,130 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-24 03:26:56,583 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 03:26:56,609 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 03:26:56,613 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 03:26:56,614 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 03:26:56,615 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 03:26:56,616 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product06.cil.c [2021-02-24 03:26:56,694 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71a54e089/2afa959de1904173b2b23f583e67223d/FLAG1daf6db33 [2021-02-24 03:26:57,472 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 03:26:57,473 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product06.cil.c [2021-02-24 03:26:57,493 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71a54e089/2afa959de1904173b2b23f583e67223d/FLAG1daf6db33 [2021-02-24 03:26:57,718 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71a54e089/2afa959de1904173b2b23f583e67223d [2021-02-24 03:26:57,721 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 03:26:57,735 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 03:26:57,737 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 03:26:57,737 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 03:26:57,742 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 03:26:57,743 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 03:26:57" (1/1) ... [2021-02-24 03:26:57,744 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6308cecc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:26:57, skipping insertion in model container [2021-02-24 03:26:57,745 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 03:26:57" (1/1) ... [2021-02-24 03:26:57,755 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 03:26:57,827 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 03:26:57,999 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_product06.cil.c[1281,1294] [2021-02-24 03:26:58,129 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 03:26:58,145 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 03:26:58,159 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_product06.cil.c[1281,1294] [2021-02-24 03:26:58,252 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 03:26:58,295 INFO L208 MainTranslator]: Completed translation [2021-02-24 03:26:58,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:26:58 WrapperNode [2021-02-24 03:26:58,296 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 03:26:58,297 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 03:26:58,297 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 03:26:58,298 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 03:26:58,311 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:26:58" (1/1) ... [2021-02-24 03:26:58,311 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:26:58" (1/1) ... [2021-02-24 03:26:58,330 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:26:58" (1/1) ... [2021-02-24 03:26:58,331 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:26:58" (1/1) ... [2021-02-24 03:26:58,364 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:26:58" (1/1) ... [2021-02-24 03:26:58,375 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:26:58" (1/1) ... [2021-02-24 03:26:58,381 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:26:58" (1/1) ... [2021-02-24 03:26:58,390 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 03:26:58,392 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 03:26:58,392 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 03:26:58,392 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 03:26:58,393 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:26:58" (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 [2021-02-24 03:26:58,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 03:26:58,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 03:26:58,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-24 03:26:58,526 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 03:26:58,526 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-24 03:26:58,526 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-24 03:26:58,526 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-24 03:26:58,526 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-24 03:26:58,526 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-24 03:26:58,527 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-24 03:26:58,527 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-24 03:26:58,527 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-24 03:26:58,527 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-24 03:26:58,527 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-24 03:26:58,528 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-24 03:26:58,528 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-24 03:26:58,528 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-24 03:26:58,528 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2021-02-24 03:26:58,529 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-24 03:26:58,529 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-24 03:26:58,529 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-24 03:26:58,529 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-24 03:26:58,529 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-24 03:26:58,529 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-24 03:26:58,529 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-24 03:26:58,529 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-24 03:26:58,529 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-24 03:26:58,530 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-24 03:26:58,530 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-24 03:26:58,530 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 03:26:58,530 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-24 03:26:58,530 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-24 03:26:58,530 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-24 03:26:58,530 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-24 03:26:58,530 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-24 03:26:58,530 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-24 03:26:58,531 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2021-02-24 03:26:58,531 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 03:26:58,531 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 03:26:58,535 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 03:26:58,535 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 03:26:58,535 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-24 03:26:58,536 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-24 03:26:58,536 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-24 03:26:58,536 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-24 03:26:58,536 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-24 03:26:58,536 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-24 03:26:58,536 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-24 03:26:58,537 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-24 03:26:58,537 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-24 03:26:58,537 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-24 03:26:58,537 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-24 03:26:58,537 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-24 03:26:58,537 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-24 03:26:58,538 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-24 03:26:58,538 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-24 03:26:58,538 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2021-02-24 03:26:58,538 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2021-02-24 03:26:58,538 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-24 03:26:58,539 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-24 03:26:58,541 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-24 03:26:58,541 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-24 03:26:58,541 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-24 03:26:58,541 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-24 03:26:58,541 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-24 03:26:58,541 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-24 03:26:58,542 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-24 03:26:58,542 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-24 03:26:58,542 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-24 03:26:58,542 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 03:26:58,542 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-24 03:26:58,543 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-24 03:26:58,543 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-24 03:26:58,543 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-24 03:26:58,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-24 03:26:58,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 03:26:58,544 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-24 03:26:58,545 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-24 03:26:58,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 03:26:58,545 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-24 03:26:58,545 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-24 03:26:58,545 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 03:26:58,545 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-24 03:26:58,546 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-24 03:26:58,546 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-24 03:26:58,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 03:26:58,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 03:26:58,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 03:26:59,724 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 03:26:59,724 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-24 03:26:59,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 03:26:59 BoogieIcfgContainer [2021-02-24 03:26:59,727 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 03:26:59,729 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 03:26:59,730 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 03:26:59,733 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 03:26:59,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 03:26:57" (1/3) ... [2021-02-24 03:26:59,734 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b961430 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 03:26:59, skipping insertion in model container [2021-02-24 03:26:59,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:26:58" (2/3) ... [2021-02-24 03:26:59,735 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b961430 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 03:26:59, skipping insertion in model container [2021-02-24 03:26:59,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 03:26:59" (3/3) ... [2021-02-24 03:26:59,737 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product06.cil.c [2021-02-24 03:26:59,745 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 03:26:59,751 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 03:26:59,775 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 03:26:59,801 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 03:26:59,801 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 03:26:59,801 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-24 03:26:59,801 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 03:26:59,801 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 03:26:59,802 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 03:26:59,802 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 03:26:59,802 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 03:26:59,827 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states. [2021-02-24 03:26:59,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-02-24 03:26:59,850 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:26:59,852 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] [2021-02-24 03:26:59,852 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:26:59,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:26:59,860 INFO L82 PathProgramCache]: Analyzing trace with hash -1003955035, now seen corresponding path program 1 times [2021-02-24 03:26:59,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:26:59,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [672027706] [2021-02-24 03:26:59,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:26:59,963 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:27:00,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:27:00,296 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:00,298 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:27:00,299 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:00,300 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:27:00,640 WARN L202 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:27:00,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:27:00,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:27:00,719 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:00,719 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:27:00,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:27:00,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:27:00,739 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:00,740 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:27:00,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:27:00,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:27:00,747 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:00,747 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:27:00,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:27:00,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:27:00,756 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:00,760 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:27:00,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:27:00,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:27:00,768 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:00,773 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:27:00,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-24 03:27:00,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:27:00,777 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:00,780 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:27:00,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-24 03:27:00,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:27:00,784 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:00,787 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:27:00,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-24 03:27:00,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:27:00,797 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:00,798 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:27:00,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:27:00,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [672027706] [2021-02-24 03:27:00,848 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:27:00,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-24 03:27:00,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303405715] [2021-02-24 03:27:00,854 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-24 03:27:00,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:27:00,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-24 03:27:00,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 03:27:00,871 INFO L87 Difference]: Start difference. First operand 285 states. Second operand 3 states. [2021-02-24 03:27:02,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:27:02,529 INFO L93 Difference]: Finished difference Result 428 states and 511 transitions. [2021-02-24 03:27:02,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-24 03:27:02,531 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2021-02-24 03:27:02,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:27:02,548 INFO L225 Difference]: With dead ends: 428 [2021-02-24 03:27:02,549 INFO L226 Difference]: Without dead ends: 273 [2021-02-24 03:27:02,554 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 [2021-02-24 03:27:02,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2021-02-24 03:27:02,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 233. [2021-02-24 03:27:02,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2021-02-24 03:27:02,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 251 transitions. [2021-02-24 03:27:02,740 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 251 transitions. Word has length 158 [2021-02-24 03:27:02,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:27:02,741 INFO L480 AbstractCegarLoop]: Abstraction has 233 states and 251 transitions. [2021-02-24 03:27:02,741 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-24 03:27:02,742 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 251 transitions. [2021-02-24 03:27:02,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-02-24 03:27:02,746 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:27:02,747 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] [2021-02-24 03:27:02,747 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 03:27:02,747 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:27:02,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:27:02,748 INFO L82 PathProgramCache]: Analyzing trace with hash 1445699213, now seen corresponding path program 1 times [2021-02-24 03:27:02,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:27:02,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2094976204] [2021-02-24 03:27:02,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:27:02,753 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:27:02,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:27:02,916 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:02,917 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:27:02,918 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:02,918 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:27:02,922 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:02,923 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:27:03,252 WARN L202 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:27:03,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:27:03,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:27:03,298 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:03,299 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:27:03,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:27:03,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:27:03,307 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:03,308 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:27:03,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:27:03,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:27:03,310 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:03,311 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:27:03,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:27:03,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:27:03,314 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:03,315 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:27:03,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:27:03,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:27:03,317 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:03,318 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:27:03,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-02-24 03:27:03,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:27:03,321 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:03,322 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:27:03,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-24 03:27:03,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:27:03,325 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:03,325 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:27:03,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-24 03:27:03,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:27:03,328 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:03,329 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:27:03,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:27:03,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2094976204] [2021-02-24 03:27:03,380 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:27:03,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-24 03:27:03,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361933352] [2021-02-24 03:27:03,381 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-24 03:27:03,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:27:03,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-24 03:27:03,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 03:27:03,382 INFO L87 Difference]: Start difference. First operand 233 states and 251 transitions. Second operand 4 states. [2021-02-24 03:27:04,162 WARN L202 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-24 03:27:05,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:27:05,058 INFO L93 Difference]: Finished difference Result 340 states and 381 transitions. [2021-02-24 03:27:05,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-24 03:27:05,059 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2021-02-24 03:27:05,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:27:05,072 INFO L225 Difference]: With dead ends: 340 [2021-02-24 03:27:05,073 INFO L226 Difference]: Without dead ends: 256 [2021-02-24 03:27:05,077 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 [2021-02-24 03:27:05,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2021-02-24 03:27:05,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 223. [2021-02-24 03:27:05,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2021-02-24 03:27:05,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 238 transitions. [2021-02-24 03:27:05,201 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 238 transitions. Word has length 159 [2021-02-24 03:27:05,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:27:05,203 INFO L480 AbstractCegarLoop]: Abstraction has 223 states and 238 transitions. [2021-02-24 03:27:05,203 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-24 03:27:05,204 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 238 transitions. [2021-02-24 03:27:05,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-02-24 03:27:05,209 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:27:05,209 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] [2021-02-24 03:27:05,210 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 03:27:05,214 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:27:05,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:27:05,214 INFO L82 PathProgramCache]: Analyzing trace with hash -989437074, now seen corresponding path program 1 times [2021-02-24 03:27:05,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:27:05,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [876118559] [2021-02-24 03:27:05,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:27:05,228 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:27:05,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:27:05,405 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:05,411 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:27:05,412 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:05,412 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:27:05,416 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:05,417 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:27:05,421 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:05,421 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:27:05,422 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:05,423 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 03:27:05,430 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:05,430 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:27:05,839 WARN L202 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:27:05,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:27:05,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:27:05,917 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:05,918 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:27:05,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:27:05,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:27:05,969 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:05,970 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:27:05,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:27:05,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:27:05,974 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:05,975 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:27:05,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:27:05,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:27:05,996 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:05,997 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:27:06,008 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:06,010 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 03:27:06,034 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:06,037 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 03:27:06,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:27:06,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:27:06,059 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:06,059 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:27:06,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-24 03:27:06,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:27:06,083 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:06,084 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:27:06,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-24 03:27:06,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:27:06,105 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:06,106 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:27:06,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-02-24 03:27:06,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:27:06,117 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:06,117 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:27:06,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-02-24 03:27:06,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:27:06,124 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:06,125 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:27:06,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:27:06,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [876118559] [2021-02-24 03:27:06,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:27:06,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-24 03:27:06,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756638152] [2021-02-24 03:27:06,190 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-24 03:27:06,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:27:06,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-24 03:27:06,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-24 03:27:06,196 INFO L87 Difference]: Start difference. First operand 223 states and 238 transitions. Second operand 10 states. [2021-02-24 03:27:06,815 WARN L202 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-24 03:27:07,237 WARN L202 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-24 03:27:07,628 WARN L202 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-24 03:27:08,033 WARN L202 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:27:08,387 WARN L202 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-24 03:27:08,755 WARN L202 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:27:10,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:27:10,300 INFO L93 Difference]: Finished difference Result 386 states and 443 transitions. [2021-02-24 03:27:10,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-24 03:27:10,301 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 172 [2021-02-24 03:27:10,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:27:10,305 INFO L225 Difference]: With dead ends: 386 [2021-02-24 03:27:10,306 INFO L226 Difference]: Without dead ends: 278 [2021-02-24 03:27:10,307 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2021-02-24 03:27:10,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2021-02-24 03:27:10,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 223. [2021-02-24 03:27:10,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2021-02-24 03:27:10,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 237 transitions. [2021-02-24 03:27:10,389 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 237 transitions. Word has length 172 [2021-02-24 03:27:10,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:27:10,389 INFO L480 AbstractCegarLoop]: Abstraction has 223 states and 237 transitions. [2021-02-24 03:27:10,389 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-24 03:27:10,390 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 237 transitions. [2021-02-24 03:27:10,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-02-24 03:27:10,392 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:27:10,392 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] [2021-02-24 03:27:10,393 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 03:27:10,393 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:27:10,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:27:10,393 INFO L82 PathProgramCache]: Analyzing trace with hash 1496509043, now seen corresponding path program 1 times [2021-02-24 03:27:10,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:27:10,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1215632571] [2021-02-24 03:27:10,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:27:10,397 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:27:10,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:27:10,476 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:10,477 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:27:10,480 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:10,481 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:27:10,482 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:10,482 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:27:10,483 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:10,483 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:27:10,484 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:10,484 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:27:10,485 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:10,485 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:27:10,489 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:10,490 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:27:10,495 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:10,496 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:27:10,814 WARN L202 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:27:10,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:27:10,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:27:10,896 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:10,897 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:27:10,899 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:10,900 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 03:27:10,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:27:10,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:27:10,909 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:10,909 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:27:10,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:27:10,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:27:10,912 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:10,912 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:27:10,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:27:10,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:27:10,916 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:10,917 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:27:10,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:27:10,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:27:10,920 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:10,920 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:27:10,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-24 03:27:10,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:27:10,932 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:10,933 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:27:10,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-24 03:27:10,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:27:10,947 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:10,948 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:27:10,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 03:27:10,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:27:10,951 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:10,951 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:27:10,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-02-24 03:27:10,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:27:10,955 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:10,955 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:27:10,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-02-24 03:27:10,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:27:10,960 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:10,960 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:27:10,961 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:10,961 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:27:10,972 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:10,973 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:27:10,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-02-24 03:27:10,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:27:10,987 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:27:10,989 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:27:11,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:27:11,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1215632571] [2021-02-24 03:27:11,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:27:11,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-24 03:27:11,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434210181] [2021-02-24 03:27:11,039 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-24 03:27:11,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:27:11,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-24 03:27:11,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-24 03:27:11,040 INFO L87 Difference]: Start difference. First operand 223 states and 237 transitions. Second operand 10 states. [2021-02-24 03:27:11,742 WARN L202 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-24 03:27:13,845 WARN L202 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:27:14,319 WARN L202 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-24 03:27:14,785 WARN L202 SmtUtils]: Spent 409.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:27:15,189 WARN L202 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-24 03:27:15,578 WARN L202 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:27:16,213 WARN L202 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-24 03:27:16,709 WARN L202 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:27:17,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:27:17,412 INFO L93 Difference]: Finished difference Result 597 states and 739 transitions. [2021-02-24 03:27:17,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-02-24 03:27:17,413 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 180 [2021-02-24 03:27:17,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:27:17,418 INFO L225 Difference]: With dead ends: 597 [2021-02-24 03:27:17,418 INFO L226 Difference]: Without dead ends: 489 [2021-02-24 03:27:17,420 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=134, Invalid=328, Unknown=0, NotChecked=0, Total=462 [2021-02-24 03:27:17,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2021-02-24 03:27:17,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 323. [2021-02-24 03:27:17,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2021-02-24 03:27:17,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 354 transitions. [2021-02-24 03:27:17,562 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 354 transitions. Word has length 180 [2021-02-24 03:27:17,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:27:17,563 INFO L480 AbstractCegarLoop]: Abstraction has 323 states and 354 transitions. [2021-02-24 03:27:17,563 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-24 03:27:17,563 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 354 transitions. [2021-02-24 03:27:17,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-02-24 03:27:17,566 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:27:17,566 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] [2021-02-24 03:27:17,567 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-24 03:27:17,567 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:27:17,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:27:17,567 INFO L82 PathProgramCache]: Analyzing trace with hash 227586222, now seen corresponding path program 1 times [2021-02-24 03:27:17,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:27:17,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1134722244] [2021-02-24 03:27:17,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:27:17,571 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:27:17,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 03:27:17,647 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 03:27:17,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 03:27:17,720 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 03:27:17,915 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-24 03:27:17,916 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-24 03:27:17,917 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-24 03:27:17,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 03:27:17 BoogieIcfgContainer [2021-02-24 03:27:17,942 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 03:27:17,943 INFO L168 Benchmark]: Toolchain (without parser) took 20220.36 ms. Allocated memory was 177.2 MB in the beginning and 459.3 MB in the end (delta: 282.1 MB). Free memory was 152.0 MB in the beginning and 287.3 MB in the end (delta: -135.3 MB). Peak memory consumption was 147.5 MB. Max. memory is 8.0 GB. [2021-02-24 03:27:17,944 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 177.2 MB. Free memory is still 150.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 03:27:17,944 INFO L168 Benchmark]: CACSL2BoogieTranslator took 559.21 ms. Allocated memory is still 177.2 MB. Free memory was 150.9 MB in the beginning and 130.9 MB in the end (delta: 20.0 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2021-02-24 03:27:17,945 INFO L168 Benchmark]: Boogie Preprocessor took 93.46 ms. Allocated memory is still 177.2 MB. Free memory was 130.9 MB in the beginning and 127.2 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-02-24 03:27:17,946 INFO L168 Benchmark]: RCFGBuilder took 1335.87 ms. Allocated memory was 177.2 MB in the beginning and 212.9 MB in the end (delta: 35.7 MB). Free memory was 127.0 MB in the beginning and 160.6 MB in the end (delta: -33.5 MB). Peak memory consumption was 38.7 MB. Max. memory is 8.0 GB. [2021-02-24 03:27:17,946 INFO L168 Benchmark]: TraceAbstraction took 18212.95 ms. Allocated memory was 212.9 MB in the beginning and 459.3 MB in the end (delta: 246.4 MB). Free memory was 160.0 MB in the beginning and 287.3 MB in the end (delta: -127.2 MB). Peak memory consumption was 119.2 MB. Max. memory is 8.0 GB. [2021-02-24 03:27:17,948 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 177.2 MB. Free memory is still 150.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 559.21 ms. Allocated memory is still 177.2 MB. Free memory was 150.9 MB in the beginning and 130.9 MB in the end (delta: 20.0 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 93.46 ms. Allocated memory is still 177.2 MB. Free memory was 130.9 MB in the beginning and 127.2 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1335.87 ms. Allocated memory was 177.2 MB in the beginning and 212.9 MB in the end (delta: 35.7 MB). Free memory was 127.0 MB in the beginning and 160.6 MB in the end (delta: -33.5 MB). Peak memory consumption was 38.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 18212.95 ms. Allocated memory was 212.9 MB in the beginning and 459.3 MB in the end (delta: 246.4 MB). Free memory was 160.0 MB in the beginning and 287.3 MB in the end (delta: -127.2 MB). Peak memory consumption was 119.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 46]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L98] int pumpRunning = 0; [L99] int systemActive = 1; [L311] int waterLevel = 1; [L312] int methaneLevelCritical = 0; [L391] int cleanupTimeShifts = 4; [L656] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L464] int retValue_acc ; [L465] int tmp ; [L469] FCALL select_helpers() [L470] FCALL select_features() [L471] CALL, EXPR valid_product() [L80] int retValue_acc ; [L83] retValue_acc = 1 [L84] return (retValue_acc); [L471] RET, EXPR valid_product() [L471] tmp = valid_product() [L473] COND TRUE \read(tmp) [L475] FCALL setup() [L476] CALL runTest() [L458] CALL test() [L244] int splverifierCounter ; [L245] int tmp ; [L246] int tmp___0 ; [L247] int tmp___1 ; [L248] int tmp___2 ; [L251] splverifierCounter = 0 [L253] COND TRUE 1 [L255] COND TRUE splverifierCounter < 4 [L261] tmp = __VERIFIER_nondet_int() [L263] COND TRUE \read(tmp) [L265] CALL waterRise() [L329] COND TRUE waterLevel < 2 [L330] waterLevel = waterLevel + 1 [L265] RET waterRise() [L271] tmp___0 = __VERIFIER_nondet_int() [L273] COND FALSE !(\read(tmp___0)) [L281] tmp___2 = __VERIFIER_nondet_int() [L283] COND TRUE \read(tmp___2) [L285] CALL startSystem() [L235] systemActive = 1 [L285] RET startSystem() [L298] CALL timeShift() [L106] COND FALSE !(\read(pumpRunning)) [L113] COND TRUE \read(systemActive) [L115] CALL processEnvironment() [L135] int tmp ; [L138] COND FALSE !(\read(pumpRunning)) [L153] FCALL processEnvironment__wrappee__base() [L115] RET processEnvironment() [L121] CALL __utac_acc__Specification3_spec__1() [L854] int tmp ; [L855] int tmp___0 ; [L856] int tmp___1 ; [L860] CALL, EXPR isMethaneLevelCritical() [L350] int retValue_acc ; [L353] retValue_acc = methaneLevelCritical [L354] return (retValue_acc); [L860] RET, EXPR isMethaneLevelCritical() [L860] tmp = isMethaneLevelCritical() [L862] COND FALSE !(\read(tmp)) [L866] CALL, EXPR getWaterLevel() [L382] int retValue_acc ; [L385] retValue_acc = waterLevel [L386] return (retValue_acc); [L866] RET, EXPR getWaterLevel() [L866] tmp___0 = getWaterLevel() [L868] COND TRUE tmp___0 == 2 [L870] CALL, EXPR isPumpRunning() [L187] int retValue_acc ; [L190] retValue_acc = pumpRunning [L191] return (retValue_acc); [L870] RET, EXPR isPumpRunning() [L870] tmp___1 = isPumpRunning() [L872] COND FALSE !(\read(tmp___1)) [L876] CALL __automaton_fail() [L46] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 37 procedures, 603 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 18.1s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 13.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 857 SDtfs, 1365 SDslu, 1280 SDs, 0 SdLazy, 2401 SolverSat, 459 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 123 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 6.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=323occurred 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: 0.5s AutomataMinimizationTime, 4 MinimizatonAttempts, 294 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...