/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product24.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 03:28:27,741 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 03:28:27,745 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 03:28:27,804 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-24 03:28:27,805 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-24 03:28:27,809 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-24 03:28:27,813 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-24 03:28:27,820 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-24 03:28:27,824 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-24 03:28:27,832 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-24 03:28:27,833 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-24 03:28:27,835 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-24 03:28:27,836 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 03:28:27,838 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 03:28:27,839 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 03:28:27,843 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 03:28:27,844 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 03:28:27,845 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 03:28:27,847 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 03:28:27,850 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 03:28:27,851 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 03:28:27,853 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 03:28:27,854 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 03:28:27,855 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 03:28:27,858 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-24 03:28:27,858 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-24 03:28:27,859 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-24 03:28:27,860 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-24 03:28:27,861 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-24 03:28:27,862 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-24 03:28:27,862 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-24 03:28:27,863 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-24 03:28:27,864 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-24 03:28:27,865 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-24 03:28:27,866 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-24 03:28:27,866 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-24 03:28:27,867 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-24 03:28:27,868 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-24 03:28:27,881 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 03:28:27,883 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 03:28:27,884 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 03:28:27,889 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-24 03:28:27,914 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 03:28:27,915 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 03:28:27,919 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 03:28:27,919 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 03:28:27,920 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 03:28:27,920 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 03:28:27,920 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 03:28:27,920 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 03:28:27,921 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 03:28:27,921 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 03:28:27,922 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 03:28:27,922 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 03:28:27,923 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 03:28:27,923 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 03:28:27,923 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 03:28:27,923 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 03:28:27,924 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 03:28:27,924 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 03:28:27,924 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 03:28:27,924 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 03:28:27,924 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 03:28:27,925 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 03:28:27,925 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-24 03:28:27,925 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-24 03:28:28,419 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 03:28:28,446 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 03:28:28,449 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 03:28:28,451 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 03:28:28,452 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 03:28:28,453 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product24.cil.c [2021-02-24 03:28:28,527 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0f823ec2/903420605d50448a94ecee07190a3afa/FLAG7e61c6cdb [2021-02-24 03:28:29,183 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 03:28:29,184 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product24.cil.c [2021-02-24 03:28:29,208 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0f823ec2/903420605d50448a94ecee07190a3afa/FLAG7e61c6cdb [2021-02-24 03:28:29,511 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0f823ec2/903420605d50448a94ecee07190a3afa [2021-02-24 03:28:29,515 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 03:28:29,530 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 03:28:29,533 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 03:28:29,533 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 03:28:29,538 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 03:28:29,539 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 03:28:29" (1/1) ... [2021-02-24 03:28:29,541 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44cc0f7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:28:29, skipping insertion in model container [2021-02-24 03:28:29,542 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 03:28:29" (1/1) ... [2021-02-24 03:28:29,552 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 03:28:29,631 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 03:28:29,841 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product24.cil.c[1281,1294] [2021-02-24 03:28:29,986 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 03:28:30,004 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 03:28:30,032 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product24.cil.c[1281,1294] [2021-02-24 03:28:30,185 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 03:28:30,230 INFO L208 MainTranslator]: Completed translation [2021-02-24 03:28:30,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:28:30 WrapperNode [2021-02-24 03:28:30,231 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 03:28:30,232 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 03:28:30,232 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 03:28:30,232 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 03:28:30,248 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:28:30" (1/1) ... [2021-02-24 03:28:30,249 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:28:30" (1/1) ... [2021-02-24 03:28:30,268 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:28:30" (1/1) ... [2021-02-24 03:28:30,268 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:28:30" (1/1) ... [2021-02-24 03:28:30,303 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:28:30" (1/1) ... [2021-02-24 03:28:30,316 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:28:30" (1/1) ... [2021-02-24 03:28:30,321 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:28:30" (1/1) ... [2021-02-24 03:28:30,329 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 03:28:30,330 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 03:28:30,330 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 03:28:30,331 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 03:28:30,332 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:28:30" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 03:28:30,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 03:28:30,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 03:28:30,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-24 03:28:30,481 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 03:28:30,482 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-24 03:28:30,482 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-24 03:28:30,482 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-24 03:28:30,483 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2021-02-24 03:28:30,484 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-24 03:28:30,484 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-24 03:28:30,488 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-24 03:28:30,488 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-24 03:28:30,489 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-24 03:28:30,489 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-24 03:28:30,489 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2021-02-24 03:28:30,490 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-24 03:28:30,490 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2021-02-24 03:28:30,491 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-24 03:28:30,491 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2021-02-24 03:28:30,494 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-24 03:28:30,495 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-24 03:28:30,495 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-24 03:28:30,495 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-24 03:28:30,495 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 03:28:30,495 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-24 03:28:30,496 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-24 03:28:30,496 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-24 03:28:30,496 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-24 03:28:30,505 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-24 03:28:30,506 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-24 03:28:30,506 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-24 03:28:30,506 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-24 03:28:30,506 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-24 03:28:30,507 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-24 03:28:30,507 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-24 03:28:30,507 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-24 03:28:30,507 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2021-02-24 03:28:30,507 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-24 03:28:30,507 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-24 03:28:30,508 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-24 03:28:30,508 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-24 03:28:30,508 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 03:28:30,508 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 03:28:30,508 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 03:28:30,508 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 03:28:30,509 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-24 03:28:30,509 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-24 03:28:30,509 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-24 03:28:30,514 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-24 03:28:30,514 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-24 03:28:30,515 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-24 03:28:30,515 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2021-02-24 03:28:30,515 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-24 03:28:30,515 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-24 03:28:30,515 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-24 03:28:30,515 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-24 03:28:30,516 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-24 03:28:30,516 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-24 03:28:30,516 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2021-02-24 03:28:30,519 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2021-02-24 03:28:30,519 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-24 03:28:30,519 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-24 03:28:30,520 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2021-02-24 03:28:30,520 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2021-02-24 03:28:30,520 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-24 03:28:30,520 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-24 03:28:30,520 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-24 03:28:30,520 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-24 03:28:30,521 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-24 03:28:30,521 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-24 03:28:30,521 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-24 03:28:30,522 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-24 03:28:30,522 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-24 03:28:30,522 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-24 03:28:30,522 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-24 03:28:30,522 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-24 03:28:30,523 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 03:28:30,524 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-24 03:28:30,524 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-24 03:28:30,525 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-24 03:28:30,525 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-24 03:28:30,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-24 03:28:30,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 03:28:30,527 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-24 03:28:30,527 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-24 03:28:30,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 03:28:30,529 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-24 03:28:30,529 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-24 03:28:30,532 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 03:28:30,532 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-24 03:28:30,533 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-24 03:28:30,533 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-24 03:28:30,533 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-24 03:28:30,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 03:28:30,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 03:28:30,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 03:28:32,428 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 03:28:32,428 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-24 03:28:32,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 03:28:32 BoogieIcfgContainer [2021-02-24 03:28:32,431 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 03:28:32,433 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 03:28:32,433 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 03:28:32,437 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 03:28:32,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 03:28:29" (1/3) ... [2021-02-24 03:28:32,438 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5060c25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 03:28:32, skipping insertion in model container [2021-02-24 03:28:32,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:28:30" (2/3) ... [2021-02-24 03:28:32,439 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5060c25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 03:28:32, skipping insertion in model container [2021-02-24 03:28:32,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 03:28:32" (3/3) ... [2021-02-24 03:28:32,440 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product24.cil.c [2021-02-24 03:28:32,448 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 03:28:32,454 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 03:28:32,475 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 03:28:32,500 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 03:28:32,500 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 03:28:32,501 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-24 03:28:32,501 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 03:28:32,501 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 03:28:32,501 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 03:28:32,501 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 03:28:32,501 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 03:28:32,526 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states. [2021-02-24 03:28:32,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-02-24 03:28:32,547 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:28:32,548 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 03:28:32,548 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:28:32,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:28:32,555 INFO L82 PathProgramCache]: Analyzing trace with hash -1944508064, now seen corresponding path program 1 times [2021-02-24 03:28:32,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:28:32,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [527862979] [2021-02-24 03:28:32,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:28:32,651 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:28:32,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:33,048 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:33,049 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:33,051 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:33,052 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:33,554 WARN L202 SmtUtils]: Spent 485.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:28:33,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:28:33,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:33,689 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:33,689 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:33,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:28:33,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:33,719 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:33,720 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:33,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:28:33,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:33,723 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:33,724 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:33,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:28:33,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:33,729 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:33,729 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:33,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:28:33,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:33,732 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:33,733 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:33,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-24 03:28:33,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:33,737 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:33,737 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:33,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-24 03:28:33,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:33,741 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:33,742 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:33,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-24 03:28:33,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:33,746 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:33,746 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:33,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:28:33,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [527862979] [2021-02-24 03:28:33,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:28:33,785 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-24 03:28:33,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085456224] [2021-02-24 03:28:33,791 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-24 03:28:33,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:28:33,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-24 03:28:33,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 03:28:33,809 INFO L87 Difference]: Start difference. First operand 322 states. Second operand 3 states. [2021-02-24 03:28:35,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:28:35,404 INFO L93 Difference]: Finished difference Result 506 states and 605 transitions. [2021-02-24 03:28:35,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-24 03:28:35,407 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2021-02-24 03:28:35,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:28:35,443 INFO L225 Difference]: With dead ends: 506 [2021-02-24 03:28:35,444 INFO L226 Difference]: Without dead ends: 314 [2021-02-24 03:28:35,454 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 03:28:35,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2021-02-24 03:28:35,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 270. [2021-02-24 03:28:35,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2021-02-24 03:28:35,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 295 transitions. [2021-02-24 03:28:35,681 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 295 transitions. Word has length 158 [2021-02-24 03:28:35,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:28:35,685 INFO L480 AbstractCegarLoop]: Abstraction has 270 states and 295 transitions. [2021-02-24 03:28:35,685 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-24 03:28:35,685 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 295 transitions. [2021-02-24 03:28:35,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-02-24 03:28:35,703 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:28:35,704 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 03:28:35,705 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 03:28:35,705 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:28:35,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:28:35,706 INFO L82 PathProgramCache]: Analyzing trace with hash -1109238629, now seen corresponding path program 1 times [2021-02-24 03:28:35,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:28:35,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1123630517] [2021-02-24 03:28:35,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:28:35,714 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:28:35,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:35,883 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:35,883 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:35,885 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:35,885 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:28:35,889 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:35,889 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:36,129 WARN L202 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:28:36,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:28:36,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:36,183 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:36,185 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:36,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:28:36,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:36,197 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:36,197 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:36,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:28:36,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:36,207 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:36,208 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:36,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:28:36,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:36,212 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:36,214 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:36,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:28:36,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:36,219 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:36,219 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:36,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-02-24 03:28:36,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:36,224 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:36,225 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:36,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-24 03:28:36,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:36,230 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:36,231 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:36,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-24 03:28:36,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:36,235 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:36,235 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:36,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:28:36,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1123630517] [2021-02-24 03:28:36,271 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:28:36,271 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-24 03:28:36,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688909620] [2021-02-24 03:28:36,274 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-24 03:28:36,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:28:36,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-24 03:28:36,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 03:28:36,275 INFO L87 Difference]: Start difference. First operand 270 states and 295 transitions. Second operand 4 states. [2021-02-24 03:28:36,958 WARN L202 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-24 03:28:38,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:28:38,011 INFO L93 Difference]: Finished difference Result 412 states and 467 transitions. [2021-02-24 03:28:38,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-24 03:28:38,012 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2021-02-24 03:28:38,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:28:38,018 INFO L225 Difference]: With dead ends: 412 [2021-02-24 03:28:38,018 INFO L226 Difference]: Without dead ends: 297 [2021-02-24 03:28:38,020 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-24 03:28:38,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2021-02-24 03:28:38,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 260. [2021-02-24 03:28:38,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2021-02-24 03:28:38,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 282 transitions. [2021-02-24 03:28:38,150 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 282 transitions. Word has length 159 [2021-02-24 03:28:38,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:28:38,151 INFO L480 AbstractCegarLoop]: Abstraction has 260 states and 282 transitions. [2021-02-24 03:28:38,151 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-24 03:28:38,151 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 282 transitions. [2021-02-24 03:28:38,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-02-24 03:28:38,154 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:28:38,155 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 03:28:38,155 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 03:28:38,155 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:28:38,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:28:38,156 INFO L82 PathProgramCache]: Analyzing trace with hash 33539817, now seen corresponding path program 1 times [2021-02-24 03:28:38,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:28:38,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [556727196] [2021-02-24 03:28:38,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:28:38,161 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:28:38,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:38,254 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:38,255 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:38,255 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:38,256 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:28:38,259 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:38,260 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:28:38,263 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:38,264 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:38,265 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:38,265 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 03:28:38,270 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:38,271 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:38,498 WARN L202 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:28:38,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:28:38,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:38,537 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:38,537 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:38,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:28:38,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:38,547 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:38,548 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:38,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:28:38,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:38,550 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:38,551 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:38,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:28:38,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:38,558 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:38,559 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:38,567 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:38,568 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 03:28:38,578 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:38,580 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 03:28:38,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:28:38,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:38,594 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:38,594 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:38,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-24 03:28:38,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:38,608 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:38,609 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:28:38,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-24 03:28:38,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:38,622 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:38,623 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:38,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-02-24 03:28:38,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:38,626 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:38,626 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:38,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-02-24 03:28:38,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:38,632 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:38,633 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:38,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:28:38,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [556727196] [2021-02-24 03:28:38,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:28:38,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-24 03:28:38,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104426845] [2021-02-24 03:28:38,692 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-24 03:28:38,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:28:38,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-24 03:28:38,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-24 03:28:38,693 INFO L87 Difference]: Start difference. First operand 260 states and 282 transitions. Second operand 10 states. [2021-02-24 03:28:39,320 WARN L202 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-24 03:28:39,656 WARN L202 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-24 03:28:39,903 WARN L202 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-24 03:28:40,160 WARN L202 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:28:40,440 WARN L202 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-24 03:28:40,713 WARN L202 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:28:41,705 WARN L202 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-24 03:28:44,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:28:44,156 INFO L93 Difference]: Finished difference Result 716 states and 838 transitions. [2021-02-24 03:28:44,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-24 03:28:44,157 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 172 [2021-02-24 03:28:44,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:28:44,166 INFO L225 Difference]: With dead ends: 716 [2021-02-24 03:28:44,166 INFO L226 Difference]: Without dead ends: 571 [2021-02-24 03:28:44,167 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2021-02-24 03:28:44,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2021-02-24 03:28:44,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 476. [2021-02-24 03:28:44,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 476 states. [2021-02-24 03:28:44,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 535 transitions. [2021-02-24 03:28:44,423 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 535 transitions. Word has length 172 [2021-02-24 03:28:44,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:28:44,424 INFO L480 AbstractCegarLoop]: Abstraction has 476 states and 535 transitions. [2021-02-24 03:28:44,424 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-24 03:28:44,424 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 535 transitions. [2021-02-24 03:28:44,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-02-24 03:28:44,428 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:28:44,429 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 03:28:44,429 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 03:28:44,429 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:28:44,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:28:44,430 INFO L82 PathProgramCache]: Analyzing trace with hash 43233474, now seen corresponding path program 1 times [2021-02-24 03:28:44,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:28:44,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [26013098] [2021-02-24 03:28:44,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:28:44,434 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:28:44,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:44,528 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:44,528 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:28:44,531 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:44,532 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:28:44,532 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:44,532 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:28:44,533 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:44,533 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:28:44,534 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:44,534 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:28:44,535 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:44,535 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:28:44,538 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:44,539 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:28:44,543 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:44,543 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:44,789 WARN L202 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:28:44,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:28:44,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:44,842 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:44,842 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:44,843 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:44,844 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 03:28:44,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:28:44,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:44,852 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:44,852 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:44,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:28:44,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:44,854 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:44,855 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:44,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:28:44,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:44,858 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:44,859 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:44,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:28:44,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:44,861 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:44,862 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:44,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-24 03:28:44,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:44,874 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:44,875 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:44,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-02-24 03:28:44,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:44,877 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:44,878 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:44,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-02-24 03:28:44,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:44,882 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:44,882 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:44,883 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:44,883 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:28:44,891 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:44,892 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:28:44,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-02-24 03:28:44,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:44,903 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:44,903 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:44,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:28:44,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [26013098] [2021-02-24 03:28:44,964 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:28:44,964 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-24 03:28:44,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071622012] [2021-02-24 03:28:44,965 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-24 03:28:44,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:28:44,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-24 03:28:44,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-24 03:28:44,971 INFO L87 Difference]: Start difference. First operand 476 states and 535 transitions. Second operand 9 states. [2021-02-24 03:28:45,439 WARN L202 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-24 03:28:47,289 WARN L202 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:28:47,575 WARN L202 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-24 03:28:47,964 WARN L202 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:28:48,324 WARN L202 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-24 03:28:48,602 WARN L202 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-24 03:28:48,871 WARN L202 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:28:49,168 WARN L202 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:28:50,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:28:50,111 INFO L93 Difference]: Finished difference Result 1284 states and 1548 transitions. [2021-02-24 03:28:50,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-24 03:28:50,111 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 177 [2021-02-24 03:28:50,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:28:50,119 INFO L225 Difference]: With dead ends: 1284 [2021-02-24 03:28:50,119 INFO L226 Difference]: Without dead ends: 923 [2021-02-24 03:28:50,121 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2021-02-24 03:28:50,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 923 states. [2021-02-24 03:28:50,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 923 to 820. [2021-02-24 03:28:50,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 820 states. [2021-02-24 03:28:50,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 948 transitions. [2021-02-24 03:28:50,456 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 948 transitions. Word has length 177 [2021-02-24 03:28:50,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:28:50,456 INFO L480 AbstractCegarLoop]: Abstraction has 820 states and 948 transitions. [2021-02-24 03:28:50,456 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-24 03:28:50,457 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 948 transitions. [2021-02-24 03:28:50,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-02-24 03:28:50,461 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:28:50,462 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 03:28:50,462 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-24 03:28:50,462 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:28:50,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:28:50,463 INFO L82 PathProgramCache]: Analyzing trace with hash -1241876197, now seen corresponding path program 1 times [2021-02-24 03:28:50,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:28:50,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1764687228] [2021-02-24 03:28:50,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:28:50,466 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:28:50,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:50,527 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:50,528 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:28:50,533 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:50,533 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:28:50,534 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:50,534 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:28:50,535 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:50,535 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:28:50,535 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:50,536 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:28:50,536 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:50,537 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:28:50,539 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:50,539 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:50,777 WARN L202 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:28:50,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:28:50,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:50,824 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:50,825 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:50,825 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:50,826 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:28:50,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:28:50,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:50,835 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:50,835 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:50,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:28:50,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:50,838 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:50,838 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:50,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:28:50,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:50,841 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:50,841 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:50,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:28:50,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:50,844 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:50,844 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:50,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-24 03:28:50,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:50,857 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:50,858 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:28:50,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-24 03:28:50,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:50,868 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:50,868 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:50,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-02-24 03:28:50,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:50,871 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:50,871 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:50,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-02-24 03:28:50,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:50,874 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:50,875 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:50,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-02-24 03:28:50,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:50,877 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:50,878 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:50,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:28:50,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1764687228] [2021-02-24 03:28:50,931 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:28:50,931 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-24 03:28:50,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547375794] [2021-02-24 03:28:50,931 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-24 03:28:50,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:28:50,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-24 03:28:50,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-24 03:28:50,932 INFO L87 Difference]: Start difference. First operand 820 states and 948 transitions. Second operand 6 states. [2021-02-24 03:28:51,437 WARN L202 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-24 03:28:52,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:28:52,587 INFO L93 Difference]: Finished difference Result 1357 states and 1630 transitions. [2021-02-24 03:28:52,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-24 03:28:52,588 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 182 [2021-02-24 03:28:52,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:28:52,593 INFO L225 Difference]: With dead ends: 1357 [2021-02-24 03:28:52,593 INFO L226 Difference]: Without dead ends: 652 [2021-02-24 03:28:52,597 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-02-24 03:28:52,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2021-02-24 03:28:52,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 575. [2021-02-24 03:28:52,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 575 states. [2021-02-24 03:28:52,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 626 transitions. [2021-02-24 03:28:52,861 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 626 transitions. Word has length 182 [2021-02-24 03:28:52,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:28:52,861 INFO L480 AbstractCegarLoop]: Abstraction has 575 states and 626 transitions. [2021-02-24 03:28:52,861 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-24 03:28:52,861 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 626 transitions. [2021-02-24 03:28:52,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-02-24 03:28:52,865 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:28:52,866 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 03:28:52,866 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-24 03:28:52,866 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:28:52,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:28:52,867 INFO L82 PathProgramCache]: Analyzing trace with hash -562945429, now seen corresponding path program 1 times [2021-02-24 03:28:52,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:28:52,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1480777799] [2021-02-24 03:28:52,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:28:52,870 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:28:52,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 03:28:52,944 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 03:28:53,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 03:28:53,011 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 03:28:53,223 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-24 03:28:53,223 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-24 03:28:53,224 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-24 03:28:53,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 03:28:53 BoogieIcfgContainer [2021-02-24 03:28:53,248 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 03:28:53,249 INFO L168 Benchmark]: Toolchain (without parser) took 23731.21 ms. Allocated memory was 160.4 MB in the beginning and 587.2 MB in the end (delta: 426.8 MB). Free memory was 136.1 MB in the beginning and 380.6 MB in the end (delta: -244.5 MB). Peak memory consumption was 184.5 MB. Max. memory is 8.0 GB. [2021-02-24 03:28:53,250 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 160.4 MB. Free memory is still 136.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 03:28:53,250 INFO L168 Benchmark]: CACSL2BoogieTranslator took 698.05 ms. Allocated memory is still 160.4 MB. Free memory was 135.0 MB in the beginning and 114.3 MB in the end (delta: 20.7 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2021-02-24 03:28:53,251 INFO L168 Benchmark]: Boogie Preprocessor took 97.33 ms. Allocated memory is still 160.4 MB. Free memory was 114.2 MB in the beginning and 110.4 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-02-24 03:28:53,251 INFO L168 Benchmark]: RCFGBuilder took 2100.97 ms. Allocated memory is still 160.4 MB. Free memory was 110.3 MB in the beginning and 126.9 MB in the end (delta: -16.6 MB). Peak memory consumption was 62.9 MB. Max. memory is 8.0 GB. [2021-02-24 03:28:53,251 INFO L168 Benchmark]: TraceAbstraction took 20815.15 ms. Allocated memory was 160.4 MB in the beginning and 587.2 MB in the end (delta: 426.8 MB). Free memory was 126.3 MB in the beginning and 380.6 MB in the end (delta: -254.3 MB). Peak memory consumption was 173.0 MB. Max. memory is 8.0 GB. [2021-02-24 03:28:53,254 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 160.4 MB. Free memory is still 136.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 698.05 ms. Allocated memory is still 160.4 MB. Free memory was 135.0 MB in the beginning and 114.3 MB in the end (delta: 20.7 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 97.33 ms. Allocated memory is still 160.4 MB. Free memory was 114.2 MB in the beginning and 110.4 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 2100.97 ms. Allocated memory is still 160.4 MB. Free memory was 110.3 MB in the beginning and 126.9 MB in the end (delta: -16.6 MB). Peak memory consumption was 62.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 20815.15 ms. Allocated memory was 160.4 MB in the beginning and 587.2 MB in the end (delta: 426.8 MB). Free memory was 126.3 MB in the beginning and 380.6 MB in the end (delta: -254.3 MB). Peak memory consumption was 173.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 46]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L62] int pumpRunning = 0; [L63] int systemActive = 1; [L371] int cleanupTimeShifts = 4; [L639] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L836] int waterLevel = 1; [L837] int methaneLevelCritical = 0; [L447] int retValue_acc ; [L448] int tmp ; [L452] FCALL select_helpers() [L453] FCALL select_features() [L454] CALL, EXPR valid_product() [L951] int retValue_acc ; [L954] retValue_acc = 1 [L955] return (retValue_acc); [L454] RET, EXPR valid_product() [L454] tmp = valid_product() [L456] COND TRUE \read(tmp) [L458] FCALL setup() [L459] CALL runTest() [L438] CALL test() [L268] int splverifierCounter ; [L269] int tmp ; [L270] int tmp___0 ; [L271] int tmp___1 ; [L272] int tmp___2 ; [L275] splverifierCounter = 0 [L277] COND TRUE 1 [L279] COND TRUE splverifierCounter < 4 [L285] tmp = __VERIFIER_nondet_int() [L287] COND TRUE \read(tmp) [L289] CALL waterRise() [L854] COND TRUE waterLevel < 2 [L855] waterLevel = waterLevel + 1 [L289] RET waterRise() [L295] tmp___0 = __VERIFIER_nondet_int() [L297] COND FALSE !(\read(tmp___0)) [L305] tmp___2 = __VERIFIER_nondet_int() [L307] COND FALSE !(\read(tmp___2)) [L313] tmp___1 = __VERIFIER_nondet_int() [L315] COND TRUE \read(tmp___1) [L317] CALL stopSystem() [L244] COND FALSE !(\read(pumpRunning)) [L251] systemActive = 0 [L317] RET stopSystem() [L324] CALL timeShift() [L70] COND FALSE !(\read(pumpRunning)) [L77] COND FALSE !(\read(systemActive)) [L85] CALL __utac_acc__Specification3_spec__1() [L338] int tmp ; [L339] int tmp___0 ; [L340] int tmp___1 ; [L344] CALL, EXPR isMethaneLevelCritical() [L875] int retValue_acc ; [L878] retValue_acc = methaneLevelCritical [L879] return (retValue_acc); [L344] RET, EXPR isMethaneLevelCritical() [L344] tmp = isMethaneLevelCritical() [L346] COND FALSE !(\read(tmp)) [L350] CALL, EXPR getWaterLevel() [L907] int retValue_acc ; [L910] retValue_acc = waterLevel [L911] return (retValue_acc); [L350] RET, EXPR getWaterLevel() [L350] tmp___0 = getWaterLevel() [L352] COND TRUE tmp___0 == 2 [L354] CALL, EXPR isPumpRunning() [L177] int retValue_acc ; [L180] retValue_acc = pumpRunning [L181] return (retValue_acc); [L354] RET, EXPR isPumpRunning() [L354] tmp___1 = isPumpRunning() [L356] COND FALSE !(\read(tmp___1)) [L360] CALL __automaton_fail() [L46] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 41 procedures, 640 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 20.7s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 15.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1241 SDtfs, 1971 SDslu, 1640 SDs, 0 SdLazy, 3509 SolverSat, 698 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 8.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 150 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 6.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=820occurred 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: 1.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 356 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! Received shutdown request...