/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_product30.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 03:28:38,457 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 03:28:38,460 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 03:28:38,522 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-24 03:28:38,523 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-24 03:28:38,527 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-24 03:28:38,531 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-24 03:28:38,539 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-24 03:28:38,543 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-24 03:28:38,549 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-24 03:28:38,551 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-24 03:28:38,553 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-24 03:28:38,554 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 03:28:38,556 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 03:28:38,558 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 03:28:38,560 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 03:28:38,563 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 03:28:38,565 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 03:28:38,573 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 03:28:38,582 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 03:28:38,584 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 03:28:38,586 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 03:28:38,587 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 03:28:38,588 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 03:28:38,611 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-24 03:28:38,611 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-24 03:28:38,611 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-24 03:28:38,614 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-24 03:28:38,614 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-24 03:28:38,616 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-24 03:28:38,617 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-24 03:28:38,618 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-24 03:28:38,621 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-24 03:28:38,622 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-24 03:28:38,623 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-24 03:28:38,623 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-24 03:28:38,624 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-24 03:28:38,624 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-24 03:28:38,625 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 03:28:38,626 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 03:28:38,627 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 03:28:38,628 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 03:28:38,651 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 03:28:38,651 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 03:28:38,655 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 03:28:38,655 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 03:28:38,656 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 03:28:38,656 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 03:28:38,656 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 03:28:38,656 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 03:28:38,657 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 03:28:38,657 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 03:28:38,658 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 03:28:38,658 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 03:28:38,658 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 03:28:38,659 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 03:28:38,659 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 03:28:38,659 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 03:28:38,660 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 03:28:38,660 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 03:28:38,660 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 03:28:38,660 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 03:28:38,660 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 03:28:38,661 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 03:28:38,661 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-24 03:28:38,661 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-24 03:28:39,046 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 03:28:39,077 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 03:28:39,081 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 03:28:39,083 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 03:28:39,083 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 03:28:39,084 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product30.cil.c [2021-02-24 03:28:39,178 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9398c4381/4c9900fe94e545609b57776e53d59c7b/FLAGe42a7e654 [2021-02-24 03:28:39,957 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 03:28:39,957 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product30.cil.c [2021-02-24 03:28:39,986 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9398c4381/4c9900fe94e545609b57776e53d59c7b/FLAGe42a7e654 [2021-02-24 03:28:40,244 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9398c4381/4c9900fe94e545609b57776e53d59c7b [2021-02-24 03:28:40,248 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 03:28:40,264 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 03:28:40,271 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 03:28:40,272 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 03:28:40,276 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 03:28:40,277 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 03:28:40" (1/1) ... [2021-02-24 03:28:40,279 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29c1f90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:28:40, skipping insertion in model container [2021-02-24 03:28:40,279 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 03:28:40" (1/1) ... [2021-02-24 03:28:40,288 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 03:28:40,363 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 03:28:40,803 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_product30.cil.c[17117,17130] [2021-02-24 03:28:40,821 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 03:28:40,846 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 03:28:40,929 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_product30.cil.c[17117,17130] [2021-02-24 03:28:40,936 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 03:28:40,989 INFO L208 MainTranslator]: Completed translation [2021-02-24 03:28:40,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:28:40 WrapperNode [2021-02-24 03:28:40,990 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 03:28:40,992 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 03:28:40,992 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 03:28:40,993 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 03:28:41,011 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:28:40" (1/1) ... [2021-02-24 03:28:41,011 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:28:40" (1/1) ... [2021-02-24 03:28:41,055 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:28:40" (1/1) ... [2021-02-24 03:28:41,056 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:28:40" (1/1) ... [2021-02-24 03:28:41,120 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:28:40" (1/1) ... [2021-02-24 03:28:41,157 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:28:40" (1/1) ... [2021-02-24 03:28:41,166 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:28:40" (1/1) ... [2021-02-24 03:28:41,187 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 03:28:41,188 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 03:28:41,188 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 03:28:41,188 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 03:28:41,193 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:28:40" (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 03:28:41,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 03:28:41,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 03:28:41,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-24 03:28:41,316 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 03:28:41,317 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-24 03:28:41,317 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-24 03:28:41,317 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-24 03:28:41,318 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-24 03:28:41,318 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-24 03:28:41,319 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-24 03:28:41,319 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2021-02-24 03:28:41,319 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-24 03:28:41,320 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-24 03:28:41,320 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-24 03:28:41,320 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-24 03:28:41,321 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 03:28:41,321 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-24 03:28:41,322 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-24 03:28:41,322 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-24 03:28:41,325 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-24 03:28:41,325 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-24 03:28:41,325 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-24 03:28:41,325 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-24 03:28:41,325 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-24 03:28:41,326 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-24 03:28:41,326 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2021-02-24 03:28:41,326 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-24 03:28:41,326 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2021-02-24 03:28:41,326 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-24 03:28:41,326 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-24 03:28:41,327 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-24 03:28:41,327 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-24 03:28:41,327 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-24 03:28:41,327 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2021-02-24 03:28:41,327 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2021-02-24 03:28:41,327 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-24 03:28:41,328 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-24 03:28:41,328 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-24 03:28:41,328 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-24 03:28:41,328 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-24 03:28:41,328 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2021-02-24 03:28:41,328 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 03:28:41,329 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 03:28:41,329 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 03:28:41,329 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 03:28:41,329 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-24 03:28:41,329 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-24 03:28:41,329 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-24 03:28:41,329 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-24 03:28:41,330 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-24 03:28:41,330 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-24 03:28:41,330 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-24 03:28:41,330 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-24 03:28:41,330 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2021-02-24 03:28:41,330 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-24 03:28:41,330 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-24 03:28:41,331 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-24 03:28:41,331 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-24 03:28:41,331 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-24 03:28:41,331 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-24 03:28:41,331 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-24 03:28:41,331 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-24 03:28:41,332 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-24 03:28:41,332 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-24 03:28:41,332 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 03:28:41,332 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-24 03:28:41,332 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-24 03:28:41,332 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-24 03:28:41,333 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-24 03:28:41,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-24 03:28:41,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 03:28:41,333 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-24 03:28:41,334 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-24 03:28:41,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 03:28:41,334 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-24 03:28:41,335 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-24 03:28:41,335 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 03:28:41,336 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-24 03:28:41,336 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-24 03:28:41,336 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-24 03:28:41,336 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2021-02-24 03:28:41,336 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-24 03:28:41,337 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-24 03:28:41,337 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-24 03:28:41,338 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2021-02-24 03:28:41,339 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-24 03:28:41,339 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-24 03:28:41,339 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2021-02-24 03:28:41,339 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2021-02-24 03:28:41,340 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-24 03:28:41,340 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2021-02-24 03:28:41,341 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-24 03:28:41,341 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-24 03:28:41,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 03:28:41,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 03:28:41,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 03:28:42,800 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 03:28:42,800 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-24 03:28:42,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 03:28:42 BoogieIcfgContainer [2021-02-24 03:28:42,804 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 03:28:42,806 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 03:28:42,806 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 03:28:42,810 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 03:28:42,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 03:28:40" (1/3) ... [2021-02-24 03:28:42,812 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12e873cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 03:28:42, skipping insertion in model container [2021-02-24 03:28:42,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:28:40" (2/3) ... [2021-02-24 03:28:42,812 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12e873cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 03:28:42, skipping insertion in model container [2021-02-24 03:28:42,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 03:28:42" (3/3) ... [2021-02-24 03:28:42,814 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product30.cil.c [2021-02-24 03:28:42,822 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 03:28:42,828 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 03:28:42,850 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 03:28:42,876 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 03:28:42,877 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 03:28:42,877 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-24 03:28:42,877 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 03:28:42,877 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 03:28:42,877 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 03:28:42,878 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 03:28:42,878 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 03:28:42,904 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states. [2021-02-24 03:28:42,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-02-24 03:28:42,926 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:28:42,928 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 03:28:42,928 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:28:42,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:28:42,936 INFO L82 PathProgramCache]: Analyzing trace with hash 1591527055, now seen corresponding path program 1 times [2021-02-24 03:28:42,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:28:42,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [717474598] [2021-02-24 03:28:42,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:28:43,035 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:28:43,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:43,464 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:43,466 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:43,467 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:43,468 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:43,876 WARN L202 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:28:43,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:28:43,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:43,954 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:43,956 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:43,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:28:43,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:43,982 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:43,985 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:43,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:28:43,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:43,995 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:43,996 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:43,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:28:43,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:44,000 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:44,001 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:44,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:28:44,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:44,004 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:44,005 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:44,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-24 03:28:44,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:44,008 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:44,009 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:44,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-24 03:28:44,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:44,013 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:44,014 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:44,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-24 03:28:44,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:44,018 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:44,018 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:44,070 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 03:28:44,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [717474598] [2021-02-24 03:28:44,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:28:44,075 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-24 03:28:44,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810548701] [2021-02-24 03:28:44,081 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-24 03:28:44,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:28:44,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-24 03:28:44,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 03:28:44,100 INFO L87 Difference]: Start difference. First operand 326 states. Second operand 3 states. [2021-02-24 03:28:45,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:28:45,775 INFO L93 Difference]: Finished difference Result 492 states and 586 transitions. [2021-02-24 03:28:45,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-24 03:28:45,778 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2021-02-24 03:28:45,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:28:45,795 INFO L225 Difference]: With dead ends: 492 [2021-02-24 03:28:45,795 INFO L226 Difference]: Without dead ends: 306 [2021-02-24 03:28:45,824 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 03:28:45,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2021-02-24 03:28:46,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 264. [2021-02-24 03:28:46,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2021-02-24 03:28:46,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 287 transitions. [2021-02-24 03:28:46,083 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 287 transitions. Word has length 158 [2021-02-24 03:28:46,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:28:46,087 INFO L480 AbstractCegarLoop]: Abstraction has 264 states and 287 transitions. [2021-02-24 03:28:46,087 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-24 03:28:46,087 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 287 transitions. [2021-02-24 03:28:46,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-02-24 03:28:46,100 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:28:46,101 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 03:28:46,104 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 03:28:46,104 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:28:46,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:28:46,105 INFO L82 PathProgramCache]: Analyzing trace with hash -68019509, now seen corresponding path program 1 times [2021-02-24 03:28:46,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:28:46,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [133629096] [2021-02-24 03:28:46,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:28:46,111 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:28:46,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:46,296 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:46,297 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:46,297 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:46,300 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:28:46,309 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:46,310 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:46,623 WARN L202 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:28:46,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:28:46,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:46,666 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:46,667 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:46,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:28:46,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:46,705 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:46,706 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:46,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:28:46,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:46,708 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:46,709 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:46,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:28:46,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:46,711 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:46,712 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:46,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:28:46,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:46,715 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:46,715 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:46,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-02-24 03:28:46,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:46,718 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:46,719 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:46,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-24 03:28:46,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:46,721 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:46,722 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:46,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-24 03:28:46,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:46,725 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:46,725 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:46,759 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 03:28:46,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [133629096] [2021-02-24 03:28:46,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:28:46,760 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-24 03:28:46,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566948630] [2021-02-24 03:28:46,762 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-24 03:28:46,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:28:46,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-24 03:28:46,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 03:28:46,763 INFO L87 Difference]: Start difference. First operand 264 states and 287 transitions. Second operand 4 states. [2021-02-24 03:28:47,569 WARN L202 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-24 03:28:48,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:28:48,796 INFO L93 Difference]: Finished difference Result 404 states and 456 transitions. [2021-02-24 03:28:48,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-24 03:28:48,797 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2021-02-24 03:28:48,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:28:48,801 INFO L225 Difference]: With dead ends: 404 [2021-02-24 03:28:48,821 INFO L226 Difference]: Without dead ends: 289 [2021-02-24 03:28:48,833 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-24 03:28:48,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2021-02-24 03:28:48,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 254. [2021-02-24 03:28:48,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2021-02-24 03:28:48,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 274 transitions. [2021-02-24 03:28:48,959 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 274 transitions. Word has length 159 [2021-02-24 03:28:48,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:28:48,960 INFO L480 AbstractCegarLoop]: Abstraction has 254 states and 274 transitions. [2021-02-24 03:28:48,960 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-24 03:28:48,961 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 274 transitions. [2021-02-24 03:28:48,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-02-24 03:28:48,963 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:28:48,964 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 03:28:48,964 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 03:28:48,965 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:28:48,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:28:48,965 INFO L82 PathProgramCache]: Analyzing trace with hash -1238661572, now seen corresponding path program 1 times [2021-02-24 03:28:48,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:28:48,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1193364339] [2021-02-24 03:28:48,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:28:48,970 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:28:49,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:49,056 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:49,056 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:49,057 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:49,057 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:28:49,061 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:49,061 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:28:49,065 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:49,066 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:49,067 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:49,067 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 03:28:49,072 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:49,073 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:49,449 WARN L202 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:28:49,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:28:49,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:49,501 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:49,501 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:49,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:28:49,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:49,512 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:49,513 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:49,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:28:49,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:49,516 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:49,516 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:49,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:28:49,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:49,523 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:49,524 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:49,533 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:49,534 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 03:28:49,556 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:49,557 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 03:28:49,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:28:49,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:49,582 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:49,583 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:49,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-24 03:28:49,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:49,599 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:49,600 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:28:49,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-24 03:28:49,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:49,625 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:49,626 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:49,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-02-24 03:28:49,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:49,629 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:49,630 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:49,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-02-24 03:28:49,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:49,634 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:49,634 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:49,739 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 03:28:49,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1193364339] [2021-02-24 03:28:49,739 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:28:49,740 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-24 03:28:49,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17159042] [2021-02-24 03:28:49,741 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-24 03:28:49,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:28:49,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-24 03:28:49,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-24 03:28:49,742 INFO L87 Difference]: Start difference. First operand 254 states and 274 transitions. Second operand 10 states. [2021-02-24 03:28:50,353 WARN L202 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-24 03:28:50,822 WARN L202 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-24 03:28:51,216 WARN L202 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-24 03:28:51,620 WARN L202 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:28:52,012 WARN L202 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-24 03:28:52,442 WARN L202 SmtUtils]: Spent 400.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:28:54,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:28:54,350 INFO L93 Difference]: Finished difference Result 450 states and 518 transitions. [2021-02-24 03:28:54,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-24 03:28:54,351 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 172 [2021-02-24 03:28:54,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:28:54,356 INFO L225 Difference]: With dead ends: 450 [2021-02-24 03:28:54,356 INFO L226 Difference]: Without dead ends: 311 [2021-02-24 03:28:54,357 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2021-02-24 03:28:54,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2021-02-24 03:28:54,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 254. [2021-02-24 03:28:54,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2021-02-24 03:28:54,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 273 transitions. [2021-02-24 03:28:54,474 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 273 transitions. Word has length 172 [2021-02-24 03:28:54,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:28:54,474 INFO L480 AbstractCegarLoop]: Abstraction has 254 states and 273 transitions. [2021-02-24 03:28:54,475 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-24 03:28:54,475 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 273 transitions. [2021-02-24 03:28:54,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-02-24 03:28:54,478 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:28:54,478 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 03:28:54,478 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 03:28:54,479 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:28:54,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:28:54,479 INFO L82 PathProgramCache]: Analyzing trace with hash -974345890, now seen corresponding path program 1 times [2021-02-24 03:28:54,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:28:54,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2123667434] [2021-02-24 03:28:54,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:28:54,483 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:28:54,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:54,570 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:54,571 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:28:54,574 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:54,574 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:28:54,575 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:54,576 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:28:54,576 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:54,577 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:28:54,578 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:54,579 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:28:54,579 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:54,580 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:28:54,586 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:54,587 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:28:54,595 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:54,596 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:54,928 WARN L202 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:28:54,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:28:54,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:54,975 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:54,976 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:54,976 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:54,977 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 03:28:54,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:28:54,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:54,985 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:54,985 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:54,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:28:54,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:54,988 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:54,988 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:54,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:28:54,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:54,991 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:54,992 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:54,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:28:54,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:54,994 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:54,995 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:55,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-24 03:28:55,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:55,007 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:55,007 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:55,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-24 03:28:55,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:55,020 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:55,021 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:55,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 03:28:55,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:55,023 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:55,024 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:55,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 03:28:55,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:55,026 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:55,026 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:55,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-02-24 03:28:55,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:55,029 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:55,030 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:55,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-02-24 03:28:55,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:55,034 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:55,034 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:55,035 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:55,035 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:28:55,045 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:55,046 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:28:55,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2021-02-24 03:28:55,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:28:55,059 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:28:55,059 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:28:55,112 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 03:28:55,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2123667434] [2021-02-24 03:28:55,112 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:28:55,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-24 03:28:55,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382241520] [2021-02-24 03:28:55,113 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-24 03:28:55,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:28:55,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-24 03:28:55,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-24 03:28:55,115 INFO L87 Difference]: Start difference. First operand 254 states and 273 transitions. Second operand 10 states. [2021-02-24 03:28:55,974 WARN L202 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-24 03:28:58,555 WARN L202 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:28:58,973 WARN L202 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-24 03:28:59,336 WARN L202 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:28:59,660 WARN L202 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-24 03:29:00,035 WARN L202 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:29:00,665 WARN L202 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-24 03:29:01,171 WARN L202 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:29:01,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:29:01,908 INFO L93 Difference]: Finished difference Result 694 states and 853 transitions. [2021-02-24 03:29:01,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-02-24 03:29:01,909 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 185 [2021-02-24 03:29:01,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:29:01,915 INFO L225 Difference]: With dead ends: 694 [2021-02-24 03:29:01,915 INFO L226 Difference]: Without dead ends: 555 [2021-02-24 03:29:01,916 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=134, Invalid=328, Unknown=0, NotChecked=0, Total=462 [2021-02-24 03:29:01,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2021-02-24 03:29:02,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 387. [2021-02-24 03:29:02,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2021-02-24 03:29:02,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 429 transitions. [2021-02-24 03:29:02,096 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 429 transitions. Word has length 185 [2021-02-24 03:29:02,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:29:02,096 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 429 transitions. [2021-02-24 03:29:02,096 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-24 03:29:02,097 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 429 transitions. [2021-02-24 03:29:02,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-02-24 03:29:02,100 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:29:02,100 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 03:29:02,101 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-24 03:29:02,101 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:29:02,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:29:02,102 INFO L82 PathProgramCache]: Analyzing trace with hash -945997450, now seen corresponding path program 1 times [2021-02-24 03:29:02,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:29:02,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [541162434] [2021-02-24 03:29:02,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:29:02,105 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:29:02,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:02,170 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:02,171 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:29:02,174 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:02,174 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:29:02,175 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:02,175 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:29:02,176 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:02,177 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:29:02,177 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:02,178 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:29:02,178 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:02,179 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:02,463 WARN L202 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:29:02,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:29:02,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:02,509 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:02,509 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:02,510 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:02,511 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:29:02,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:29:02,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:02,519 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:02,519 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:02,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:29:02,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:02,522 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:02,522 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:02,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:29:02,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:02,525 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:02,526 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:02,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:29:02,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:02,528 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:02,529 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:02,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-24 03:29:02,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:02,540 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:02,540 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:02,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-24 03:29:02,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:02,552 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:02,552 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:02,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-02-24 03:29:02,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:02,565 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:02,565 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:02,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 03:29:02,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:02,568 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:02,569 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:02,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 03:29:02,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:02,571 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:02,571 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:02,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-02-24 03:29:02,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:02,574 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:02,575 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:02,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-02-24 03:29:02,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:02,577 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:02,578 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:02,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-02-24 03:29:02,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:02,581 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:02,581 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:02,642 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 03:29:02,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [541162434] [2021-02-24 03:29:02,643 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:29:02,643 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-24 03:29:02,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702282257] [2021-02-24 03:29:02,644 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-24 03:29:02,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:29:02,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-24 03:29:02,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-02-24 03:29:02,645 INFO L87 Difference]: Start difference. First operand 387 states and 429 transitions. Second operand 7 states. [2021-02-24 03:29:03,331 WARN L202 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-24 03:29:04,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:29:04,440 INFO L93 Difference]: Finished difference Result 619 states and 723 transitions. [2021-02-24 03:29:04,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-24 03:29:04,441 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 190 [2021-02-24 03:29:04,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:29:04,444 INFO L225 Difference]: With dead ends: 619 [2021-02-24 03:29:04,444 INFO L226 Difference]: Without dead ends: 347 [2021-02-24 03:29:04,446 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-02-24 03:29:04,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2021-02-24 03:29:04,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 281. [2021-02-24 03:29:04,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2021-02-24 03:29:04,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 296 transitions. [2021-02-24 03:29:04,545 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 296 transitions. Word has length 190 [2021-02-24 03:29:04,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:29:04,546 INFO L480 AbstractCegarLoop]: Abstraction has 281 states and 296 transitions. [2021-02-24 03:29:04,546 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-24 03:29:04,546 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 296 transitions. [2021-02-24 03:29:04,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-02-24 03:29:04,549 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:29:04,549 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 03:29:04,550 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-24 03:29:04,550 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:29:04,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:29:04,550 INFO L82 PathProgramCache]: Analyzing trace with hash 1472450222, now seen corresponding path program 1 times [2021-02-24 03:29:04,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:29:04,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2071198006] [2021-02-24 03:29:04,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:29:04,554 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:29:04,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 03:29:04,633 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 03:29:04,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 03:29:04,713 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 03:29:04,958 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-24 03:29:04,958 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-24 03:29:04,959 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-24 03:29:04,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 03:29:04 BoogieIcfgContainer [2021-02-24 03:29:04,985 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 03:29:04,986 INFO L168 Benchmark]: Toolchain (without parser) took 24736.33 ms. Allocated memory was 161.5 MB in the beginning and 426.8 MB in the end (delta: 265.3 MB). Free memory was 137.0 MB in the beginning and 386.4 MB in the end (delta: -249.4 MB). Peak memory consumption was 259.9 MB. Max. memory is 8.0 GB. [2021-02-24 03:29:04,987 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 161.5 MB. Free memory is still 136.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 03:29:04,987 INFO L168 Benchmark]: CACSL2BoogieTranslator took 719.28 ms. Allocated memory is still 161.5 MB. Free memory was 136.0 MB in the beginning and 115.4 MB in the end (delta: 20.6 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2021-02-24 03:29:04,988 INFO L168 Benchmark]: Boogie Preprocessor took 195.08 ms. Allocated memory is still 161.5 MB. Free memory was 115.4 MB in the beginning and 143.5 MB in the end (delta: -28.0 MB). Peak memory consumption was 7.8 MB. Max. memory is 8.0 GB. [2021-02-24 03:29:04,988 INFO L168 Benchmark]: RCFGBuilder took 1616.11 ms. Allocated memory is still 161.5 MB. Free memory was 143.0 MB in the beginning and 99.1 MB in the end (delta: 43.9 MB). Peak memory consumption was 65.4 MB. Max. memory is 8.0 GB. [2021-02-24 03:29:04,989 INFO L168 Benchmark]: TraceAbstraction took 22179.22 ms. Allocated memory was 161.5 MB in the beginning and 426.8 MB in the end (delta: 265.3 MB). Free memory was 98.6 MB in the beginning and 386.4 MB in the end (delta: -287.9 MB). Peak memory consumption was 220.2 MB. Max. memory is 8.0 GB. [2021-02-24 03:29:04,990 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 161.5 MB. Free memory is still 136.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 719.28 ms. Allocated memory is still 161.5 MB. Free memory was 136.0 MB in the beginning and 115.4 MB in the end (delta: 20.6 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 195.08 ms. Allocated memory is still 161.5 MB. Free memory was 115.4 MB in the beginning and 143.5 MB in the end (delta: -28.0 MB). Peak memory consumption was 7.8 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1616.11 ms. Allocated memory is still 161.5 MB. Free memory was 143.0 MB in the beginning and 99.1 MB in the end (delta: 43.9 MB). Peak memory consumption was 65.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 22179.22 ms. Allocated memory was 161.5 MB in the beginning and 426.8 MB in the end (delta: 265.3 MB). Free memory was 98.6 MB in the beginning and 386.4 MB in the end (delta: -287.9 MB). Peak memory consumption was 220.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 885]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L49] int waterLevel = 1; [L50] int methaneLevelCritical = 0; [L138] int cleanupTimeShifts = 4; [L409] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L677] int pumpRunning = 0; [L678] int systemActive = 1; [L217] int retValue_acc ; [L218] int tmp ; [L222] FCALL select_helpers() [L223] FCALL select_features() [L224] CALL, EXPR valid_product() [L916] int retValue_acc ; [L919] retValue_acc = 1 [L920] return (retValue_acc); [L224] RET, EXPR valid_product() [L224] tmp = valid_product() [L226] COND TRUE \read(tmp) [L228] FCALL setup() [L229] CALL runTest() [L208] CALL test() [L608] int splverifierCounter ; [L609] int tmp ; [L610] int tmp___0 ; [L611] int tmp___1 ; [L612] int tmp___2 ; [L615] splverifierCounter = 0 [L617] COND TRUE 1 [L619] COND TRUE splverifierCounter < 4 [L625] tmp = __VERIFIER_nondet_int() [L627] COND TRUE \read(tmp) [L629] CALL waterRise() [L67] COND TRUE waterLevel < 2 [L68] waterLevel = waterLevel + 1 [L629] RET waterRise() [L635] tmp___0 = __VERIFIER_nondet_int() [L637] COND FALSE !(\read(tmp___0)) [L645] tmp___2 = __VERIFIER_nondet_int() [L647] COND TRUE \read(tmp___2) [L649] CALL startSystem() [L876] systemActive = 1 [L649] RET startSystem() [L662] CALL timeShift() [L685] COND FALSE !(\read(pumpRunning)) [L692] COND TRUE \read(systemActive) [L694] CALL processEnvironment() [L740] int tmp ; [L743] COND FALSE !(\read(pumpRunning)) [L758] CALL processEnvironment__wrappee__methaneQuery() [L714] int tmp ; [L717] COND FALSE !(\read(pumpRunning)) [L732] FCALL processEnvironment__wrappee__base() [L758] RET processEnvironment__wrappee__methaneQuery() [L694] RET processEnvironment() [L700] CALL __utac_acc__Specification3_spec__1() [L926] int tmp ; [L927] int tmp___0 ; [L928] int tmp___1 ; [L932] CALL, EXPR isMethaneLevelCritical() [L88] int retValue_acc ; [L91] retValue_acc = methaneLevelCritical [L92] return (retValue_acc); [L932] RET, EXPR isMethaneLevelCritical() [L932] tmp = isMethaneLevelCritical() [L934] COND FALSE !(\read(tmp)) [L938] CALL, EXPR getWaterLevel() [L120] int retValue_acc ; [L123] retValue_acc = waterLevel [L124] return (retValue_acc); [L938] RET, EXPR getWaterLevel() [L938] tmp___0 = getWaterLevel() [L940] COND TRUE tmp___0 == 2 [L942] CALL, EXPR isPumpRunning() [L809] int retValue_acc ; [L812] retValue_acc = pumpRunning [L813] return (retValue_acc); [L942] RET, EXPR isPumpRunning() [L942] tmp___1 = isPumpRunning() [L944] COND FALSE !(\read(tmp___1)) [L948] CALL __automaton_fail() [L885] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 41 procedures, 643 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 22.0s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 17.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1155 SDtfs, 2122 SDslu, 1432 SDs, 0 SdLazy, 3022 SolverSat, 685 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 8.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 168 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 7.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=387occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 5 MinimizatonAttempts, 368 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...