/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_spec4_product24.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 20:05:43,879 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 20:05:43,882 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 20:05:43,933 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 20:05:43,934 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 20:05:43,939 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 20:05:43,943 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 20:05:43,953 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 20:05:43,957 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 20:05:43,965 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 20:05:43,966 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 20:05:43,968 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 20:05:43,968 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 20:05:43,971 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 20:05:43,973 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 20:05:43,975 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 20:05:43,977 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 20:05:43,982 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 20:05:43,990 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 20:05:43,995 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 20:05:43,997 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 20:05:44,002 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 20:05:44,003 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 20:05:44,005 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 20:05:44,013 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 20:05:44,013 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 20:05:44,014 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 20:05:44,015 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 20:05:44,016 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 20:05:44,017 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 20:05:44,019 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 20:05:44,020 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 20:05:44,022 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 20:05:44,023 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 20:05:44,035 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 20:05:44,036 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 20:05:44,037 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 20:05:44,037 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 20:05:44,037 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 20:05:44,038 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 20:05:44,039 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 20:05:44,040 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 20:05:44,065 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 20:05:44,065 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 20:05:44,071 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 20:05:44,071 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 20:05:44,071 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 20:05:44,072 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 20:05:44,072 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 20:05:44,072 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 20:05:44,073 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 20:05:44,073 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 20:05:44,074 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 20:05:44,074 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 20:05:44,075 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 20:05:44,075 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 20:05:44,075 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 20:05:44,075 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 20:05:44,075 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 20:05:44,076 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 20:05:44,076 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:05:44,076 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 20:05:44,076 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 20:05:44,076 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 20:05:44,077 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 20:05:44,474 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 20:05:44,509 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 20:05:44,512 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 20:05:44,515 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 20:05:44,516 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 20:05:44,517 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product24.cil.c [2020-10-23 20:05:44,600 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb3e3b669/4431b40ee20043319cd060456446c39c/FLAGbbc74a217 [2020-10-23 20:05:45,370 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 20:05:45,371 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product24.cil.c [2020-10-23 20:05:45,390 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb3e3b669/4431b40ee20043319cd060456446c39c/FLAGbbc74a217 [2020-10-23 20:05:45,609 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb3e3b669/4431b40ee20043319cd060456446c39c [2020-10-23 20:05:45,612 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 20:05:45,619 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 20:05:45,621 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 20:05:45,622 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 20:05:45,626 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 20:05:45,627 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:05:45" (1/1) ... [2020-10-23 20:05:45,634 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6710840e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:05:45, skipping insertion in model container [2020-10-23 20:05:45,634 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:05:45" (1/1) ... [2020-10-23 20:05:45,643 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 20:05:45,682 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 20:05:46,021 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:05:46,048 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 20:05:46,193 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:05:46,232 INFO L208 MainTranslator]: Completed translation [2020-10-23 20:05:46,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:05:46 WrapperNode [2020-10-23 20:05:46,232 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 20:05:46,234 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 20:05:46,234 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 20:05:46,234 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 20:05:46,247 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:05:46" (1/1) ... [2020-10-23 20:05:46,248 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:05:46" (1/1) ... [2020-10-23 20:05:46,267 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:05:46" (1/1) ... [2020-10-23 20:05:46,267 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:05:46" (1/1) ... [2020-10-23 20:05:46,320 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:05:46" (1/1) ... [2020-10-23 20:05:46,341 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:05:46" (1/1) ... [2020-10-23 20:05:46,355 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:05:46" (1/1) ... [2020-10-23 20:05:46,370 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 20:05:46,371 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 20:05:46,371 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 20:05:46,371 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 20:05:46,375 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:05:46" (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 [2020-10-23 20:05:46,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 20:05:46,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 20:05:46,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-10-23 20:05:46,452 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 20:05:46,452 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-10-23 20:05:46,452 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-10-23 20:05:46,453 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-10-23 20:05:46,453 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-10-23 20:05:46,453 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 20:05:46,453 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-10-23 20:05:46,453 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-10-23 20:05:46,453 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-10-23 20:05:46,454 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-10-23 20:05:46,454 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-10-23 20:05:46,454 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-10-23 20:05:46,454 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-10-23 20:05:46,454 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-10-23 20:05:46,455 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-10-23 20:05:46,455 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-10-23 20:05:46,455 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-10-23 20:05:46,455 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-10-23 20:05:46,455 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-10-23 20:05:46,455 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-10-23 20:05:46,456 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-10-23 20:05:46,456 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-10-23 20:05:46,456 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-10-23 20:05:46,456 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-10-23 20:05:46,456 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-10-23 20:05:46,456 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-10-23 20:05:46,457 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-10-23 20:05:46,457 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-10-23 20:05:46,457 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-10-23 20:05:46,457 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-10-23 20:05:46,457 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-10-23 20:05:46,457 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-10-23 20:05:46,458 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-10-23 20:05:46,458 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-10-23 20:05:46,458 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-10-23 20:05:46,458 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-10-23 20:05:46,458 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-10-23 20:05:46,458 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-10-23 20:05:46,459 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 20:05:46,459 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 20:05:46,459 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 20:05:46,459 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 20:05:46,459 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 20:05:46,459 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-10-23 20:05:46,460 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-10-23 20:05:46,460 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-10-23 20:05:46,460 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-10-23 20:05:46,460 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-10-23 20:05:46,460 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-10-23 20:05:46,460 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-10-23 20:05:46,460 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-10-23 20:05:46,461 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-10-23 20:05:46,461 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-10-23 20:05:46,461 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-10-23 20:05:46,461 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-10-23 20:05:46,461 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-10-23 20:05:46,461 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 20:05:46,462 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 20:05:46,462 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-23 20:05:46,462 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-10-23 20:05:46,462 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 20:05:46,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-23 20:05:46,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 20:05:46,462 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-23 20:05:46,463 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-10-23 20:05:46,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 20:05:46,463 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-10-23 20:05:46,463 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-10-23 20:05:46,463 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 20:05:46,463 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-10-23 20:05:46,463 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-10-23 20:05:46,464 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-10-23 20:05:46,464 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-10-23 20:05:46,464 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-10-23 20:05:46,464 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-10-23 20:05:46,464 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-10-23 20:05:46,464 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-10-23 20:05:46,465 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-10-23 20:05:46,465 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-10-23 20:05:46,465 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-10-23 20:05:46,465 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-10-23 20:05:46,465 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-10-23 20:05:46,465 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-10-23 20:05:46,465 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-10-23 20:05:46,466 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-10-23 20:05:46,466 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-10-23 20:05:46,466 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-10-23 20:05:46,466 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-10-23 20:05:46,466 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-10-23 20:05:46,466 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-10-23 20:05:46,467 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 20:05:46,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 20:05:46,467 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 20:05:47,865 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 20:05:47,866 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-23 20:05:47,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:05:47 BoogieIcfgContainer [2020-10-23 20:05:47,873 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 20:05:47,875 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 20:05:47,875 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 20:05:47,879 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 20:05:47,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:05:45" (1/3) ... [2020-10-23 20:05:47,880 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a8e0b1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:05:47, skipping insertion in model container [2020-10-23 20:05:47,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:05:46" (2/3) ... [2020-10-23 20:05:47,881 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a8e0b1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:05:47, skipping insertion in model container [2020-10-23 20:05:47,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:05:47" (3/3) ... [2020-10-23 20:05:47,883 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product24.cil.c [2020-10-23 20:05:47,896 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 20:05:47,903 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-10-23 20:05:47,919 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-23 20:05:47,946 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 20:05:47,946 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 20:05:47,946 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 20:05:47,947 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 20:05:47,947 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 20:05:47,947 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 20:05:47,947 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 20:05:47,947 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 20:05:47,972 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states. [2020-10-23 20:05:47,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-23 20:05:47,994 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:05:47,995 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] [2020-10-23 20:05:47,996 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:05:48,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:05:48,003 INFO L82 PathProgramCache]: Analyzing trace with hash -2025185378, now seen corresponding path program 1 times [2020-10-23 20:05:48,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:05:48,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [322489194] [2020-10-23 20:05:48,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:05:48,091 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:05:48,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:05:48,824 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 20:05:48,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:05:48,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:05:48,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 20:05:48,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:05:48,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 20:05:48,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:05:48,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 20:05:48,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:05:48,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 20:05:48,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:05:48,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-23 20:05:48,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:05:48,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-23 20:05:48,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:05:48,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:05:48,991 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [322489194] [2020-10-23 20:05:48,993 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:05:48,994 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 20:05:48,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094723981] [2020-10-23 20:05:49,000 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 20:05:49,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:05:49,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 20:05:49,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 20:05:49,017 INFO L87 Difference]: Start difference. First operand 319 states. Second operand 3 states. [2020-10-23 20:05:50,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:05:50,879 INFO L93 Difference]: Finished difference Result 498 states and 594 transitions. [2020-10-23 20:05:50,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 20:05:50,881 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 148 [2020-10-23 20:05:50,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:05:50,898 INFO L225 Difference]: With dead ends: 498 [2020-10-23 20:05:50,899 INFO L226 Difference]: Without dead ends: 309 [2020-10-23 20:05:50,904 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 20:05:50,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2020-10-23 20:05:51,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 265. [2020-10-23 20:05:51,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-10-23 20:05:51,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 288 transitions. [2020-10-23 20:05:51,097 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 288 transitions. Word has length 148 [2020-10-23 20:05:51,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:05:51,098 INFO L481 AbstractCegarLoop]: Abstraction has 265 states and 288 transitions. [2020-10-23 20:05:51,098 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 20:05:51,099 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 288 transitions. [2020-10-23 20:05:51,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-23 20:05:51,103 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:05:51,104 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] [2020-10-23 20:05:51,104 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 20:05:51,104 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:05:51,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:05:51,105 INFO L82 PathProgramCache]: Analyzing trace with hash 1346254024, now seen corresponding path program 1 times [2020-10-23 20:05:51,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:05:51,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [5140227] [2020-10-23 20:05:51,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:05:51,111 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:05:51,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:05:51,583 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 20:05:51,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:05:51,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:05:51,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 20:05:51,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:05:51,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 20:05:51,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:05:51,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 20:05:51,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:05:51,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 20:05:51,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:05:51,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-23 20:05:51,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:05:51,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-23 20:05:51,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:05:51,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:05:51,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [5140227] [2020-10-23 20:05:51,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:05:51,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 20:05:51,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890055212] [2020-10-23 20:05:51,766 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 20:05:51,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:05:51,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 20:05:51,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 20:05:51,768 INFO L87 Difference]: Start difference. First operand 265 states and 288 transitions. Second operand 4 states. [2020-10-23 20:05:52,599 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:05:53,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:05:53,836 INFO L93 Difference]: Finished difference Result 402 states and 453 transitions. [2020-10-23 20:05:53,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-23 20:05:53,837 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2020-10-23 20:05:53,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:05:53,842 INFO L225 Difference]: With dead ends: 402 [2020-10-23 20:05:53,843 INFO L226 Difference]: Without dead ends: 292 [2020-10-23 20:05:53,845 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-23 20:05:53,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2020-10-23 20:05:53,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 255. [2020-10-23 20:05:53,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2020-10-23 20:05:53,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 275 transitions. [2020-10-23 20:05:53,988 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 275 transitions. Word has length 149 [2020-10-23 20:05:53,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:05:53,989 INFO L481 AbstractCegarLoop]: Abstraction has 255 states and 275 transitions. [2020-10-23 20:05:53,989 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 20:05:53,989 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 275 transitions. [2020-10-23 20:05:53,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-23 20:05:53,991 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:05:53,992 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] [2020-10-23 20:05:53,992 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 20:05:53,992 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:05:53,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:05:53,993 INFO L82 PathProgramCache]: Analyzing trace with hash -1820109908, now seen corresponding path program 1 times [2020-10-23 20:05:53,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:05:53,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1086285723] [2020-10-23 20:05:53,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:05:53,997 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:05:54,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:05:54,616 WARN L193 SmtUtils]: Spent 414.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 20:05:54,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:05:54,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:05:54,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 20:05:54,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:05:54,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 20:05:54,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:05:54,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 20:05:54,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:05:54,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 20:05:54,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:05:54,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-23 20:05:54,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:05:54,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-23 20:05:54,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:05:54,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-23 20:05:54,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:05:54,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:05:54,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1086285723] [2020-10-23 20:05:54,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:05:54,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 20:05:54,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379938633] [2020-10-23 20:05:54,828 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 20:05:54,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:05:54,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 20:05:54,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-23 20:05:54,830 INFO L87 Difference]: Start difference. First operand 255 states and 275 transitions. Second operand 10 states. [2020-10-23 20:05:55,477 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 20:05:56,001 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:05:56,399 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:05:56,773 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 20:05:57,144 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:05:57,571 WARN L193 SmtUtils]: Spent 398.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 20:05:58,717 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:06:01,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:06:01,766 INFO L93 Difference]: Finished difference Result 691 states and 806 transitions. [2020-10-23 20:06:01,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-23 20:06:01,773 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 162 [2020-10-23 20:06:01,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:06:01,780 INFO L225 Difference]: With dead ends: 691 [2020-10-23 20:06:01,781 INFO L226 Difference]: Without dead ends: 551 [2020-10-23 20:06:01,782 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-10-23 20:06:01,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2020-10-23 20:06:02,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 454. [2020-10-23 20:06:02,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 454 states. [2020-10-23 20:06:02,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 508 transitions. [2020-10-23 20:06:02,034 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 508 transitions. Word has length 162 [2020-10-23 20:06:02,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:06:02,035 INFO L481 AbstractCegarLoop]: Abstraction has 454 states and 508 transitions. [2020-10-23 20:06:02,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 20:06:02,035 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 508 transitions. [2020-10-23 20:06:02,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-23 20:06:02,038 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:06:02,039 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] [2020-10-23 20:06:02,039 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 20:06:02,039 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:06:02,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:06:02,040 INFO L82 PathProgramCache]: Analyzing trace with hash -1344782456, now seen corresponding path program 1 times [2020-10-23 20:06:02,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:06:02,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [252068685] [2020-10-23 20:06:02,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:06:02,044 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:06:02,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:06:02,515 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 20:06:02,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:06:02,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:06:02,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 20:06:02,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:06:02,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 20:06:02,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:06:02,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 20:06:02,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:06:02,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 20:06:02,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:06:02,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-23 20:06:02,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:06:02,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-10-23 20:06:02,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:06:02,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-23 20:06:02,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:06:02,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:06:02,759 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [252068685] [2020-10-23 20:06:02,759 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:06:02,759 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-23 20:06:02,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738707691] [2020-10-23 20:06:02,760 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-23 20:06:02,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:06:02,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-23 20:06:02,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-10-23 20:06:02,762 INFO L87 Difference]: Start difference. First operand 454 states and 508 transitions. Second operand 14 states. [2020-10-23 20:06:03,430 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 20:06:03,970 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:06:04,387 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:06:04,802 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 20:06:05,201 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:06:05,552 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 20:06:06,477 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:06:07,875 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 20:06:08,338 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:06:08,915 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:06:09,555 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:06:09,920 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 20:06:10,381 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:06:10,822 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:06:11,210 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 20:06:11,635 WARN L193 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:06:12,243 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:06:12,872 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:06:13,404 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:06:13,814 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 20:06:16,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:06:16,323 INFO L93 Difference]: Finished difference Result 1557 states and 1902 transitions. [2020-10-23 20:06:16,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-23 20:06:16,325 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 167 [2020-10-23 20:06:16,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:06:16,338 INFO L225 Difference]: With dead ends: 1557 [2020-10-23 20:06:16,338 INFO L226 Difference]: Without dead ends: 1218 [2020-10-23 20:06:16,342 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=252, Invalid=1008, Unknown=0, NotChecked=0, Total=1260 [2020-10-23 20:06:16,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1218 states. [2020-10-23 20:06:16,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1218 to 1071. [2020-10-23 20:06:16,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1071 states. [2020-10-23 20:06:16,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 1239 transitions. [2020-10-23 20:06:16,830 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 1239 transitions. Word has length 167 [2020-10-23 20:06:16,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:06:16,831 INFO L481 AbstractCegarLoop]: Abstraction has 1071 states and 1239 transitions. [2020-10-23 20:06:16,831 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-23 20:06:16,831 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 1239 transitions. [2020-10-23 20:06:16,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-23 20:06:16,836 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:06:16,836 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] [2020-10-23 20:06:16,837 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 20:06:16,837 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:06:16,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:06:16,838 INFO L82 PathProgramCache]: Analyzing trace with hash -1828510290, now seen corresponding path program 1 times [2020-10-23 20:06:16,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:06:16,838 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [648627534] [2020-10-23 20:06:16,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:06:16,841 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:06:16,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:06:17,254 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 20:06:17,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:06:17,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:06:17,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 20:06:17,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:06:17,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 20:06:17,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:06:17,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 20:06:17,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:06:17,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 20:06:17,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:06:17,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-23 20:06:17,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:06:17,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-23 20:06:17,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:06:17,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-23 20:06:17,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:06:17,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-10-23 20:06:17,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:06:17,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:06:17,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [648627534] [2020-10-23 20:06:17,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:06:17,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-23 20:06:17,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973993248] [2020-10-23 20:06:17,434 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-23 20:06:17,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:06:17,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-23 20:06:17,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-23 20:06:17,435 INFO L87 Difference]: Start difference. First operand 1071 states and 1239 transitions. Second operand 6 states. [2020-10-23 20:06:18,119 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 20:06:19,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:06:19,653 INFO L93 Difference]: Finished difference Result 1745 states and 2104 transitions. [2020-10-23 20:06:19,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-23 20:06:19,654 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 172 [2020-10-23 20:06:19,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:06:19,660 INFO L225 Difference]: With dead ends: 1745 [2020-10-23 20:06:19,660 INFO L226 Difference]: Without dead ends: 789 [2020-10-23 20:06:19,664 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-10-23 20:06:19,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 789 states. [2020-10-23 20:06:19,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 789 to 686. [2020-10-23 20:06:19,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 686 states. [2020-10-23 20:06:19,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 745 transitions. [2020-10-23 20:06:19,952 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 745 transitions. Word has length 172 [2020-10-23 20:06:19,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:06:19,952 INFO L481 AbstractCegarLoop]: Abstraction has 686 states and 745 transitions. [2020-10-23 20:06:19,952 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-23 20:06:19,952 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 745 transitions. [2020-10-23 20:06:19,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-10-23 20:06:19,957 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:06:19,958 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:06:19,959 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-23 20:06:19,959 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:06:19,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:06:19,960 INFO L82 PathProgramCache]: Analyzing trace with hash -377645188, now seen corresponding path program 1 times [2020-10-23 20:06:19,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:06:19,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1793964857] [2020-10-23 20:06:19,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:06:20,135 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2020-10-23 20:06:20,405 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2020-10-23 20:06:20,650 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2020-10-23 20:06:20,872 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2020-10-23 20:06:21,129 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2020-10-23 20:06:21,389 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2020-10-23 20:06:21,644 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2020-10-23 20:06:21,890 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2020-10-23 20:06:22,149 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2020-10-23 20:06:22,403 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2020-10-23 20:06:22,644 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2020-10-23 20:06:22,894 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2020-10-23 20:06:23,150 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2020-10-23 20:06:23,428 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2020-10-23 20:06:23,686 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2020-10-23 20:06:23,935 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2020-10-23 20:06:24,173 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2020-10-23 20:06:24,431 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2020-10-23 20:06:27,403 WARN L193 SmtUtils]: Spent 684.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 171 [2020-10-23 20:06:29,959 WARN L193 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 171 [2020-10-23 20:06:31,460 WARN L193 SmtUtils]: Spent 540.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 173 [2020-10-23 20:06:34,000 WARN L193 SmtUtils]: Spent 431.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 173 [2020-10-23 20:06:34,014 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:06:36,553 WARN L193 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 173 [2020-10-23 20:06:39,053 WARN L193 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 171 [2020-10-23 20:06:39,058 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:06:40,317 WARN L193 SmtUtils]: Spent 435.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 173 [2020-10-23 20:06:40,323 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:06:42,803 WARN L193 SmtUtils]: Spent 393.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 171 [2020-10-23 20:06:42,810 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:06:42,820 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:06:45,438 WARN L193 SmtUtils]: Spent 481.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 173 [2020-10-23 20:06:45,442 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:06:47,936 WARN L193 SmtUtils]: Spent 414.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 171 [2020-10-23 20:06:47,940 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:06:50,479 WARN L193 SmtUtils]: Spent 448.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 173 [2020-10-23 20:06:50,485 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:06:53,030 WARN L193 SmtUtils]: Spent 452.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 171 [2020-10-23 20:06:55,552 WARN L193 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 171 [2020-10-23 20:06:58,042 WARN L193 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 171 [2020-10-23 20:06:58,045 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:07:00,573 WARN L193 SmtUtils]: Spent 444.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 173 [2020-10-23 20:07:00,578 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:07:01,730 WARN L193 SmtUtils]: Spent 467.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 173 [2020-10-23 20:07:01,736 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:07:01,746 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:07:02,125 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 114 [2020-10-23 20:07:02,479 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 114 [2020-10-23 20:07:02,828 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 114 [2020-10-23 20:07:03,165 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 113 [2020-10-23 20:07:03,531 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 114 [2020-10-23 20:07:03,887 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 114 [2020-10-23 20:07:04,240 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 113 [2020-10-23 20:07:04,628 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 113 [2020-10-23 20:07:04,631 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:07:04,995 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 114 [2020-10-23 20:07:05,343 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 114 [2020-10-23 20:07:05,699 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 113 [2020-10-23 20:07:06,059 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 114 [2020-10-23 20:07:06,418 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 113 [2020-10-23 20:07:06,800 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 114 [2020-10-23 20:07:07,151 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 113 [2020-10-23 20:07:07,495 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 114 [2020-10-23 20:07:07,498 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:07:07,833 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:07:08,200 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:07:08,576 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:07:08,965 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:07:09,339 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:07:09,710 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:07:10,054 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:07:10,409 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:07:10,413 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:07:12,967 WARN L193 SmtUtils]: Spent 479.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 170 [2020-10-23 20:07:12,971 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:07:15,496 WARN L193 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 168 [2020-10-23 20:07:15,501 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:07:16,685 WARN L193 SmtUtils]: Spent 476.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 170 [2020-10-23 20:07:16,689 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:07:19,256 WARN L193 SmtUtils]: Spent 478.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 170 [2020-10-23 20:07:19,260 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:07:21,771 WARN L193 SmtUtils]: Spent 445.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 168 [2020-10-23 20:07:21,776 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:07:24,325 WARN L193 SmtUtils]: Spent 440.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 168 [2020-10-23 20:07:24,329 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:07:25,779 WARN L193 SmtUtils]: Spent 515.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 170 [2020-10-23 20:07:28,313 WARN L193 SmtUtils]: Spent 470.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 168 [2020-10-23 20:07:28,319 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:07:28,323 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:07:29,584 WARN L193 SmtUtils]: Spent 476.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 165 [2020-10-23 20:07:29,589 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:07:32,112 WARN L193 SmtUtils]: Spent 457.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 163 [2020-10-23 20:07:32,115 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:07:33,353 WARN L193 SmtUtils]: Spent 476.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 165 [2020-10-23 20:07:35,889 WARN L193 SmtUtils]: Spent 470.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 165 [2020-10-23 20:07:38,381 WARN L193 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 163 [2020-10-23 20:07:38,385 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:07:40,892 WARN L193 SmtUtils]: Spent 454.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 163 [2020-10-23 20:07:40,896 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:07:43,517 WARN L193 SmtUtils]: Spent 517.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 162 [2020-10-23 20:07:46,173 WARN L193 SmtUtils]: Spent 524.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 164 [2020-10-23 20:07:46,178 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:07:46,182 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:07:48,751 WARN L193 SmtUtils]: Spent 511.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 168 [2020-10-23 20:07:48,755 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:07:51,291 WARN L193 SmtUtils]: Spent 443.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 168 [2020-10-23 20:07:51,294 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:07:53,961 WARN L193 SmtUtils]: Spent 587.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 170 [2020-10-23 20:07:53,965 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:07:56,527 WARN L193 SmtUtils]: Spent 500.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 168 [2020-10-23 20:07:56,530 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:07:59,165 WARN L193 SmtUtils]: Spent 555.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 170 [2020-10-23 20:07:59,171 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:08:01,729 WARN L193 SmtUtils]: Spent 498.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 168 [2020-10-23 20:08:04,433 WARN L193 SmtUtils]: Spent 602.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 170 [2020-10-23 20:08:04,436 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:08:07,069 WARN L193 SmtUtils]: Spent 570.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 170 [2020-10-23 20:08:07,075 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:08:09,678 WARN L193 SmtUtils]: Spent 530.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 166 [2020-10-23 20:08:09,681 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:08:12,262 WARN L193 SmtUtils]: Spent 498.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 165 [2020-10-23 20:08:12,265 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:08:14,281 WARN L193 SmtUtils]: Spent 501.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 167 [2020-10-23 20:08:16,905 WARN L193 SmtUtils]: Spent 568.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 167 [2020-10-23 20:08:16,909 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:08:19,505 WARN L193 SmtUtils]: Spent 497.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 164 [2020-10-23 20:08:19,509 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:08:22,097 WARN L193 SmtUtils]: Spent 528.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 167 [2020-10-23 20:08:22,101 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:08:24,686 WARN L193 SmtUtils]: Spent 504.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 165 [2020-10-23 20:08:24,690 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:08:27,268 WARN L193 SmtUtils]: Spent 521.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 165 [2020-10-23 20:08:27,271 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:08:27,274 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:08:27,653 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:08:28,057 WARN L193 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:08:28,467 WARN L193 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:08:28,875 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:08:29,248 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:08:29,662 WARN L193 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:08:30,067 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:08:30,473 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:08:30,475 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:08:33,078 WARN L193 SmtUtils]: Spent 546.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 170 [2020-10-23 20:08:35,726 WARN L193 SmtUtils]: Spent 585.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 172 [2020-10-23 20:08:35,730 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:08:38,344 WARN L193 SmtUtils]: Spent 552.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 170 [2020-10-23 20:08:38,348 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:08:41,018 WARN L193 SmtUtils]: Spent 612.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 172 [2020-10-23 20:08:43,076 WARN L193 SmtUtils]: Spent 629.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 172 [2020-10-23 20:08:43,080 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:08:45,774 WARN L193 SmtUtils]: Spent 599.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 170 [2020-10-23 20:08:48,493 WARN L193 SmtUtils]: Spent 651.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 172 [2020-10-23 20:08:51,140 WARN L193 SmtUtils]: Spent 586.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 170 [2020-10-23 20:08:51,144 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:08:51,148 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:08:51,563 WARN L193 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:08:51,955 WARN L193 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:08:52,356 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:08:52,765 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:08:53,188 WARN L193 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:08:53,603 WARN L193 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:08:54,008 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:08:54,404 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 117 [2020-10-23 20:08:54,405 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:08:57,065 WARN L193 SmtUtils]: Spent 562.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 172 [2020-10-23 20:08:57,069 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:08:59,681 WARN L193 SmtUtils]: Spent 553.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 170 [2020-10-23 20:08:59,684 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:09:01,531 WARN L193 SmtUtils]: Spent 586.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 172 [2020-10-23 20:09:04,170 WARN L193 SmtUtils]: Spent 577.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 172 [2020-10-23 20:09:06,767 WARN L193 SmtUtils]: Spent 531.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 170 [2020-10-23 20:09:06,769 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:09:09,413 WARN L193 SmtUtils]: Spent 585.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 172 [2020-10-23 20:09:09,417 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:09:11,983 WARN L193 SmtUtils]: Spent 506.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 170 [2020-10-23 20:09:11,987 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:09:14,591 WARN L193 SmtUtils]: Spent 550.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 170 [2020-10-23 20:09:14,597 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:09:14,600 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:09:17,191 WARN L193 SmtUtils]: Spent 533.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 172 [2020-10-23 20:09:17,195 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:09:19,756 WARN L193 SmtUtils]: Spent 505.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 172 [2020-10-23 20:09:19,760 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:09:22,350 WARN L193 SmtUtils]: Spent 535.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 172 [2020-10-23 20:09:22,354 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:09:24,320 WARN L193 SmtUtils]: Spent 545.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 174 [2020-10-23 20:09:24,323 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:09:26,233 WARN L193 SmtUtils]: Spent 552.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 174 [2020-10-23 20:09:26,236 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:09:28,447 WARN L193 SmtUtils]: Spent 528.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 174 [2020-10-23 20:09:28,451 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:09:31,002 WARN L193 SmtUtils]: Spent 502.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 172 [2020-10-23 20:09:31,006 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:09:33,631 WARN L193 SmtUtils]: Spent 546.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 174 [2020-10-23 20:09:33,635 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:09:33,638 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:09:36,214 WARN L193 SmtUtils]: Spent 524.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 165 [2020-10-23 20:09:38,825 WARN L193 SmtUtils]: Spent 548.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 167 [2020-10-23 20:09:41,364 WARN L193 SmtUtils]: Spent 549.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 167 [2020-10-23 20:09:43,923 WARN L193 SmtUtils]: Spent 506.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 165 [2020-10-23 20:09:43,925 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:09:46,486 WARN L193 SmtUtils]: Spent 487.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 165 [2020-10-23 20:09:49,022 WARN L193 SmtUtils]: Spent 489.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 165 [2020-10-23 20:09:49,025 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:09:51,163 WARN L193 SmtUtils]: Spent 536.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 167 [2020-10-23 20:09:51,166 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:09:53,770 WARN L193 SmtUtils]: Spent 537.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 167 [2020-10-23 20:09:53,773 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:09:53,775 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:09:56,341 WARN L193 SmtUtils]: Spent 514.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 172 [2020-10-23 20:09:56,343 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:09:58,701 WARN L193 SmtUtils]: Spent 605.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 174 [2020-10-23 20:09:58,703 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:10:01,300 WARN L193 SmtUtils]: Spent 536.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 172 [2020-10-23 20:10:01,305 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:10:03,987 WARN L193 SmtUtils]: Spent 619.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 174 [2020-10-23 20:10:03,991 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:10:06,683 WARN L193 SmtUtils]: Spent 601.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 174 [2020-10-23 20:10:06,687 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:10:09,288 WARN L193 SmtUtils]: Spent 549.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 172 [2020-10-23 20:10:09,291 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:10:11,962 WARN L193 SmtUtils]: Spent 604.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 174 [2020-10-23 20:10:11,966 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:10:14,586 WARN L193 SmtUtils]: Spent 558.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 172 [2020-10-23 20:10:14,591 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:10:14,593 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:10:14,981 WARN L193 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 114 [2020-10-23 20:10:15,368 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 113 [2020-10-23 20:10:15,734 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 114 [2020-10-23 20:10:16,096 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 113 [2020-10-23 20:10:16,488 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 114 [2020-10-23 20:10:16,870 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 114 [2020-10-23 20:10:17,239 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 114 [2020-10-23 20:10:17,602 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 113 [2020-10-23 20:10:17,604 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:10:20,164 WARN L193 SmtUtils]: Spent 510.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 162 [2020-10-23 20:10:20,167 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:10:22,797 WARN L193 SmtUtils]: Spent 546.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 164 [2020-10-23 20:10:22,800 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:10:25,366 WARN L193 SmtUtils]: Spent 493.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 163 [2020-10-23 20:10:25,379 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:10:27,928 WARN L193 SmtUtils]: Spent 488.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 163 [2020-10-23 20:10:30,550 WARN L193 SmtUtils]: Spent 547.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 165 [2020-10-23 20:10:33,186 WARN L193 SmtUtils]: Spent 585.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 165 [2020-10-23 20:10:33,189 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:10:35,783 WARN L193 SmtUtils]: Spent 542.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 163 [2020-10-23 20:10:38,427 WARN L193 SmtUtils]: Spent 577.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 165 [2020-10-23 20:10:38,430 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:10:38,432 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:10:38,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:10:38,711 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:10:38,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:10:38,938 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:10:39,145 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-23 20:10:39,146 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 20:10:39,148 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-23 20:10:39,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:10:39 BoogieIcfgContainer [2020-10-23 20:10:39,187 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 20:10:39,189 INFO L168 Benchmark]: Toolchain (without parser) took 293573.87 ms. Allocated memory was 153.1 MB in the beginning and 569.4 MB in the end (delta: 416.3 MB). Free memory was 129.3 MB in the beginning and 399.1 MB in the end (delta: -269.8 MB). Peak memory consumption was 147.3 MB. Max. memory is 8.0 GB. [2020-10-23 20:10:39,190 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 125.8 MB. Free memory was 102.4 MB in the beginning and 102.4 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 20:10:39,192 INFO L168 Benchmark]: CACSL2BoogieTranslator took 611.50 ms. Allocated memory is still 153.1 MB. Free memory was 128.6 MB in the beginning and 107.8 MB in the end (delta: 20.8 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2020-10-23 20:10:39,194 INFO L168 Benchmark]: Boogie Preprocessor took 136.23 ms. Allocated memory is still 153.1 MB. Free memory was 107.8 MB in the beginning and 134.9 MB in the end (delta: -27.1 MB). Peak memory consumption was 7.5 MB. Max. memory is 8.0 GB. [2020-10-23 20:10:39,194 INFO L168 Benchmark]: RCFGBuilder took 1502.85 ms. Allocated memory is still 153.1 MB. Free memory was 134.9 MB in the beginning and 130.5 MB in the end (delta: 4.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 8.0 GB. [2020-10-23 20:10:39,198 INFO L168 Benchmark]: TraceAbstraction took 291311.76 ms. Allocated memory was 153.1 MB in the beginning and 569.4 MB in the end (delta: 416.3 MB). Free memory was 130.0 MB in the beginning and 399.1 MB in the end (delta: -269.1 MB). Peak memory consumption was 147.7 MB. Max. memory is 8.0 GB. [2020-10-23 20:10:39,206 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 125.8 MB. Free memory was 102.4 MB in the beginning and 102.4 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 611.50 ms. Allocated memory is still 153.1 MB. Free memory was 128.6 MB in the beginning and 107.8 MB in the end (delta: 20.8 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 136.23 ms. Allocated memory is still 153.1 MB. Free memory was 107.8 MB in the beginning and 134.9 MB in the end (delta: -27.1 MB). Peak memory consumption was 7.5 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1502.85 ms. Allocated memory is still 153.1 MB. Free memory was 134.9 MB in the beginning and 130.5 MB in the end (delta: 4.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 291311.76 ms. Allocated memory was 153.1 MB in the beginning and 569.4 MB in the end (delta: 416.3 MB). Free memory was 130.0 MB in the beginning and 399.1 MB in the end (delta: -269.1 MB). Peak memory consumption was 147.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L42] int cleanupTimeShifts = 4; [L315] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L590] int pumpRunning = 0; [L591] int systemActive = 1; [L793] int waterLevel = 1; [L794] int methaneLevelCritical = 0; [L123] int retValue_acc ; [L124] int tmp ; [L128] FCALL select_helpers() [L129] FCALL select_features() [L130] CALL, EXPR valid_product() [L935] int retValue_acc ; [L938] retValue_acc = 1 [L939] return (retValue_acc); [L130] RET, EXPR valid_product() [L130] tmp = valid_product() [L132] COND TRUE \read(tmp) [L134] FCALL setup() [L135] CALL runTest() [L114] CALL test() [L515] int splverifierCounter ; [L516] int tmp ; [L517] int tmp___0 ; [L518] int tmp___1 ; [L519] int tmp___2 ; [L522] splverifierCounter = 0 [L524] COND TRUE 1 [L526] COND TRUE splverifierCounter < 4 [L532] tmp = __VERIFIER_nondet_int() [L534] COND TRUE \read(tmp) [L536] CALL waterRise() [L811] COND TRUE waterLevel < 2 [L812] waterLevel = waterLevel + 1 [L536] RET waterRise() [L542] tmp___0 = __VERIFIER_nondet_int() [L544] COND FALSE !(\read(tmp___0)) [L552] tmp___2 = __VERIFIER_nondet_int() [L554] COND FALSE !(\read(tmp___2)) [L560] tmp___1 = __VERIFIER_nondet_int() [L562] COND TRUE \read(tmp___1) [L564] CALL stopSystem() [L772] COND FALSE !(\read(pumpRunning)) [L779] systemActive = 0 [L564] RET stopSystem() [L571] CALL timeShift() [L598] COND FALSE !(\read(pumpRunning)) [L605] COND FALSE !(\read(systemActive)) [L613] CALL __utac_acc__Specification4_spec__1() [L884] int tmp ; [L885] int tmp___0 ; [L889] CALL, EXPR getWaterLevel() [L864] int retValue_acc ; [L867] retValue_acc = waterLevel [L868] return (retValue_acc); [L889] RET, EXPR getWaterLevel() [L889] tmp = getWaterLevel() [L891] COND FALSE !(tmp == 0) [L613] RET __utac_acc__Specification4_spec__1() [L571] RET timeShift() [L524] COND TRUE 1 [L526] COND TRUE splverifierCounter < 4 [L532] tmp = __VERIFIER_nondet_int() [L534] COND TRUE \read(tmp) [L536] CALL waterRise() [L811] COND TRUE waterLevel < 2 [L812] waterLevel = waterLevel + 1 [L536] RET waterRise() [L542] tmp___0 = __VERIFIER_nondet_int() [L544] COND FALSE !(\read(tmp___0)) [L552] tmp___2 = __VERIFIER_nondet_int() [L554] COND FALSE !(\read(tmp___2)) [L560] tmp___1 = __VERIFIER_nondet_int() [L562] COND FALSE !(\read(tmp___1)) [L571] CALL timeShift() [L598] COND FALSE !(\read(pumpRunning)) [L605] COND FALSE !(\read(systemActive)) [L613] CALL __utac_acc__Specification4_spec__1() [L884] int tmp ; [L885] int tmp___0 ; [L889] CALL, EXPR getWaterLevel() [L864] int retValue_acc ; [L867] retValue_acc = waterLevel [L868] return (retValue_acc); [L889] RET, EXPR getWaterLevel() [L889] tmp = getWaterLevel() [L891] COND TRUE tmp == 0 [L893] CALL, EXPR isPumpRunning() [L705] int retValue_acc ; [L708] retValue_acc = pumpRunning [L709] return (retValue_acc); [L893] RET, EXPR isPumpRunning() [L893] tmp___0 = isPumpRunning() [L895] COND TRUE \read(tmp___0) [L897] CALL __automaton_fail() [L948] CALL reach_error() [L3] __assert_fail("0", "minepump_spec4_product24.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 41 procedures, 638 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 291.2s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 26.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1199 SDtfs, 2037 SDslu, 2273 SDs, 0 SdLazy, 4630 SolverSat, 744 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 11.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 159 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 13.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1071occurred 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: 1.3s AutomataMinimizationTime, 5 MinimizatonAttempts, 428 StatesRemovedByMinimization, 5 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! [MP z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process Received shutdown request...