/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-b7b32d2 [2021-02-22 01:03:27,661 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 01:03:27,666 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 01:03:27,720 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-22 01:03:27,721 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-22 01:03:27,724 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-22 01:03:27,728 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-22 01:03:27,736 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-22 01:03:27,739 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-22 01:03:27,747 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-22 01:03:27,748 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-22 01:03:27,750 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-22 01:03:27,751 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-22 01:03:27,754 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-22 01:03:27,756 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-22 01:03:27,757 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-22 01:03:27,762 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-22 01:03:27,775 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-22 01:03:27,781 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-22 01:03:27,783 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-22 01:03:27,790 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-22 01:03:27,792 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-22 01:03:27,793 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-22 01:03:27,794 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-22 01:03:27,797 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-22 01:03:27,797 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-22 01:03:27,797 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-22 01:03:27,798 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-22 01:03:27,799 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-22 01:03:27,800 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-22 01:03:27,801 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-22 01:03:27,801 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-22 01:03:27,802 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-22 01:03:27,803 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-22 01:03:27,804 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-22 01:03:27,805 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-22 01:03:27,806 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-22 01:03:27,806 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-22 01:03:27,806 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-22 01:03:27,808 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-22 01:03:27,808 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-22 01:03:27,809 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-22 01:03:27,823 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 01:03:27,823 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 01:03:27,825 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 01:03:27,825 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 01:03:27,825 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 01:03:27,826 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 01:03:27,826 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 01:03:27,826 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 01:03:27,827 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 01:03:27,827 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 01:03:27,827 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 01:03:27,827 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 01:03:27,828 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 01:03:27,828 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 01:03:27,828 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 01:03:27,829 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 01:03:27,829 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 01:03:27,829 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 01:03:27,829 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 01:03:27,830 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 01:03:27,830 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 01:03:27,830 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 01:03:27,830 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 01:03:27,831 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 01:03:28,229 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 01:03:28,271 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 01:03:28,274 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 01:03:28,276 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 01:03:28,277 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 01:03:28,278 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product30.cil.c [2021-02-22 01:03:28,354 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b135e3b95/d90c6f2a569c43748ba427906bc64b8e/FLAG562060c77 [2021-02-22 01:03:29,087 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 01:03:29,092 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product30.cil.c [2021-02-22 01:03:29,117 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b135e3b95/d90c6f2a569c43748ba427906bc64b8e/FLAG562060c77 [2021-02-22 01:03:29,316 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b135e3b95/d90c6f2a569c43748ba427906bc64b8e [2021-02-22 01:03:29,319 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 01:03:29,334 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 01:03:29,336 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 01:03:29,337 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 01:03:29,341 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 01:03:29,342 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:03:29" (1/1) ... [2021-02-22 01:03:29,343 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6020b13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:03:29, skipping insertion in model container [2021-02-22 01:03:29,344 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:03:29" (1/1) ... [2021-02-22 01:03:29,354 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 01:03:29,422 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 01:03:29,814 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] [2021-02-22 01:03:29,823 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:03:29,835 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 01:03:29,944 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] [2021-02-22 01:03:29,947 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:03:29,992 INFO L208 MainTranslator]: Completed translation [2021-02-22 01:03:29,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:03:29 WrapperNode [2021-02-22 01:03:29,993 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 01:03:29,994 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 01:03:29,994 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 01:03:29,994 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 01:03:30,010 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:03:29" (1/1) ... [2021-02-22 01:03:30,011 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:03:29" (1/1) ... [2021-02-22 01:03:30,029 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:03:29" (1/1) ... [2021-02-22 01:03:30,030 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:03:29" (1/1) ... [2021-02-22 01:03:30,113 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:03:29" (1/1) ... [2021-02-22 01:03:30,144 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:03:29" (1/1) ... [2021-02-22 01:03:30,153 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:03:29" (1/1) ... [2021-02-22 01:03:30,161 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 01:03:30,162 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 01:03:30,162 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 01:03:30,162 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 01:03:30,163 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:03:29" (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 [2021-02-22 01:03:30,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 01:03:30,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 01:03:30,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-22 01:03:30,265 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 01:03:30,265 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-22 01:03:30,265 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-22 01:03:30,265 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-22 01:03:30,265 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-22 01:03:30,266 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-22 01:03:30,266 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-22 01:03:30,266 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2021-02-22 01:03:30,266 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-22 01:03:30,266 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-22 01:03:30,267 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-22 01:03:30,267 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-22 01:03:30,267 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 01:03:30,267 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-22 01:03:30,267 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-22 01:03:30,268 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-22 01:03:30,268 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-22 01:03:30,268 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-22 01:03:30,268 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-22 01:03:30,268 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-22 01:03:30,268 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-22 01:03:30,269 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-22 01:03:30,269 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2021-02-22 01:03:30,269 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-22 01:03:30,269 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2021-02-22 01:03:30,269 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-22 01:03:30,270 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-22 01:03:30,270 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-22 01:03:30,270 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-22 01:03:30,270 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-22 01:03:30,270 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2021-02-22 01:03:30,270 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2021-02-22 01:03:30,271 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-22 01:03:30,271 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-22 01:03:30,271 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-22 01:03:30,271 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-22 01:03:30,271 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-22 01:03:30,271 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2021-02-22 01:03:30,272 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 01:03:30,272 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 01:03:30,272 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 01:03:30,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 01:03:30,272 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-22 01:03:30,273 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-22 01:03:30,273 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-22 01:03:30,273 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-22 01:03:30,273 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-22 01:03:30,273 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-22 01:03:30,273 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-22 01:03:30,273 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-22 01:03:30,274 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2021-02-22 01:03:30,274 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-22 01:03:30,274 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-22 01:03:30,274 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-22 01:03:30,274 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-22 01:03:30,274 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-22 01:03:30,274 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-22 01:03:30,275 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-22 01:03:30,275 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-22 01:03:30,275 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-22 01:03:30,275 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-22 01:03:30,275 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 01:03:30,275 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-22 01:03:30,276 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-22 01:03:30,276 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-22 01:03:30,276 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-22 01:03:30,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-22 01:03:30,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 01:03:30,276 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-22 01:03:30,277 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-22 01:03:30,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 01:03:30,277 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-22 01:03:30,277 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-22 01:03:30,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 01:03:30,277 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-22 01:03:30,278 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-22 01:03:30,278 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-22 01:03:30,278 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2021-02-22 01:03:30,278 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-22 01:03:30,278 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-22 01:03:30,278 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-22 01:03:30,279 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2021-02-22 01:03:30,279 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-22 01:03:30,279 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-22 01:03:30,279 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2021-02-22 01:03:30,279 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2021-02-22 01:03:30,279 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-22 01:03:30,279 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2021-02-22 01:03:30,280 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-22 01:03:30,280 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-22 01:03:30,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 01:03:30,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 01:03:30,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 01:03:31,561 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 01:03:31,562 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-22 01:03:31,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:03:31 BoogieIcfgContainer [2021-02-22 01:03:31,565 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 01:03:31,567 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 01:03:31,567 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 01:03:31,571 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 01:03:31,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 01:03:29" (1/3) ... [2021-02-22 01:03:31,572 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c8a28ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:03:31, skipping insertion in model container [2021-02-22 01:03:31,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:03:29" (2/3) ... [2021-02-22 01:03:31,572 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c8a28ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:03:31, skipping insertion in model container [2021-02-22 01:03:31,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:03:31" (3/3) ... [2021-02-22 01:03:31,574 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product30.cil.c [2021-02-22 01:03:31,581 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 01:03:31,587 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-22 01:03:31,606 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-22 01:03:31,631 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 01:03:31,631 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 01:03:31,631 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 01:03:31,631 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 01:03:31,631 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 01:03:31,632 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 01:03:31,632 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 01:03:31,632 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 01:03:31,656 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states. [2021-02-22 01:03:31,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-02-22 01:03:31,677 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:03:31,678 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] [2021-02-22 01:03:31,678 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:03:31,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:03:31,685 INFO L82 PathProgramCache]: Analyzing trace with hash 1591527055, now seen corresponding path program 1 times [2021-02-22 01:03:31,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:03:31,695 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1692013509] [2021-02-22 01:03:31,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:03:31,772 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:03:31,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:32,211 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:32,213 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:32,214 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:32,215 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:32,588 WARN L202 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 01:03:32,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:03:32,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:32,676 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:32,680 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:32,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 01:03:32,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:32,699 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:32,699 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:32,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 01:03:32,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:32,703 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:32,703 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:32,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 01:03:32,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:32,708 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:32,708 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:32,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 01:03:32,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:32,712 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:32,712 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:32,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-22 01:03:32,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:32,716 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:32,717 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:32,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-22 01:03:32,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:32,721 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:32,722 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:32,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-22 01:03:32,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:32,727 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:32,727 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:32,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:03:32,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1692013509] [2021-02-22 01:03:32,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:03:32,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-22 01:03:32,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721104019] [2021-02-22 01:03:32,776 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-22 01:03:32,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:03:32,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-22 01:03:32,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-22 01:03:32,795 INFO L87 Difference]: Start difference. First operand 326 states. Second operand 3 states. [2021-02-22 01:03:34,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:03:34,497 INFO L93 Difference]: Finished difference Result 492 states and 586 transitions. [2021-02-22 01:03:34,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-22 01:03:34,500 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2021-02-22 01:03:34,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:03:34,517 INFO L225 Difference]: With dead ends: 492 [2021-02-22 01:03:34,517 INFO L226 Difference]: Without dead ends: 306 [2021-02-22 01:03:34,523 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-22 01:03:34,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2021-02-22 01:03:34,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 264. [2021-02-22 01:03:34,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2021-02-22 01:03:34,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 287 transitions. [2021-02-22 01:03:34,685 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 287 transitions. Word has length 158 [2021-02-22 01:03:34,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:03:34,686 INFO L480 AbstractCegarLoop]: Abstraction has 264 states and 287 transitions. [2021-02-22 01:03:34,686 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-22 01:03:34,687 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 287 transitions. [2021-02-22 01:03:34,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-02-22 01:03:34,691 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:03:34,692 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] [2021-02-22 01:03:34,692 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 01:03:34,692 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:03:34,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:03:34,693 INFO L82 PathProgramCache]: Analyzing trace with hash -68019509, now seen corresponding path program 1 times [2021-02-22 01:03:34,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:03:34,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1885887289] [2021-02-22 01:03:34,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:03:34,698 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:03:34,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:34,880 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:34,882 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:34,883 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:34,885 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:03:34,894 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:34,895 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:35,264 WARN L202 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 01:03:35,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:03:35,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:35,339 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:35,340 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:35,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 01:03:35,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:35,352 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:35,352 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:35,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 01:03:35,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:35,365 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:35,366 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:35,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 01:03:35,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:35,369 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:35,371 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:35,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 01:03:35,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:35,374 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:35,375 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:35,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-02-22 01:03:35,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:35,378 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:35,378 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:35,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-22 01:03:35,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:35,382 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:35,384 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:35,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-22 01:03:35,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:35,389 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:35,390 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:35,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:03:35,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1885887289] [2021-02-22 01:03:35,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:03:35,431 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-22 01:03:35,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565238158] [2021-02-22 01:03:35,433 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-22 01:03:35,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:03:35,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-22 01:03:35,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-22 01:03:35,435 INFO L87 Difference]: Start difference. First operand 264 states and 287 transitions. Second operand 4 states. [2021-02-22 01:03:36,156 WARN L202 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-22 01:03:37,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:03:37,314 INFO L93 Difference]: Finished difference Result 404 states and 456 transitions. [2021-02-22 01:03:37,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-22 01:03:37,315 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2021-02-22 01:03:37,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:03:37,322 INFO L225 Difference]: With dead ends: 404 [2021-02-22 01:03:37,322 INFO L226 Difference]: Without dead ends: 289 [2021-02-22 01:03:37,326 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 [2021-02-22 01:03:37,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2021-02-22 01:03:37,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 254. [2021-02-22 01:03:37,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2021-02-22 01:03:37,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 274 transitions. [2021-02-22 01:03:37,455 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 274 transitions. Word has length 159 [2021-02-22 01:03:37,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:03:37,458 INFO L480 AbstractCegarLoop]: Abstraction has 254 states and 274 transitions. [2021-02-22 01:03:37,458 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-22 01:03:37,459 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 274 transitions. [2021-02-22 01:03:37,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-02-22 01:03:37,471 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:03:37,471 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] [2021-02-22 01:03:37,472 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-22 01:03:37,472 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:03:37,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:03:37,473 INFO L82 PathProgramCache]: Analyzing trace with hash -1238661572, now seen corresponding path program 1 times [2021-02-22 01:03:37,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:03:37,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1630305931] [2021-02-22 01:03:37,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:03:37,478 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:03:37,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:37,580 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:37,580 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:37,581 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:37,581 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:03:37,585 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:37,585 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:03:37,589 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:37,590 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:37,590 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:37,591 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 01:03:37,596 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:37,597 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:37,895 WARN L202 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 01:03:37,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:03:37,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:37,949 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:37,949 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:37,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 01:03:37,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:37,962 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:37,963 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:37,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 01:03:37,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:37,965 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:37,965 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:37,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 01:03:37,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:37,972 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:37,973 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:37,981 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:37,982 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:03:37,996 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:37,997 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:03:38,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 01:03:38,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:38,015 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:38,016 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:38,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-22 01:03:38,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:38,032 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:38,032 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:03:38,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-22 01:03:38,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:38,049 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:38,049 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:38,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-02-22 01:03:38,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:38,052 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:38,053 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:38,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-02-22 01:03:38,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:38,056 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:38,057 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:38,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:03:38,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1630305931] [2021-02-22 01:03:38,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:03:38,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-22 01:03:38,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954222826] [2021-02-22 01:03:38,109 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-22 01:03:38,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:03:38,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-22 01:03:38,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-22 01:03:38,110 INFO L87 Difference]: Start difference. First operand 254 states and 274 transitions. Second operand 10 states. [2021-02-22 01:03:38,850 WARN L202 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-22 01:03:39,291 WARN L202 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-22 01:03:39,667 WARN L202 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-22 01:03:40,052 WARN L202 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 01:03:40,406 WARN L202 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-22 01:03:40,760 WARN L202 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 01:03:42,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:03:42,537 INFO L93 Difference]: Finished difference Result 450 states and 518 transitions. [2021-02-22 01:03:42,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-22 01:03:42,537 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 172 [2021-02-22 01:03:42,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:03:42,542 INFO L225 Difference]: With dead ends: 450 [2021-02-22 01:03:42,542 INFO L226 Difference]: Without dead ends: 311 [2021-02-22 01:03:42,544 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2021-02-22 01:03:42,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2021-02-22 01:03:42,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 254. [2021-02-22 01:03:42,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2021-02-22 01:03:42,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 273 transitions. [2021-02-22 01:03:42,633 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 273 transitions. Word has length 172 [2021-02-22 01:03:42,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:03:42,634 INFO L480 AbstractCegarLoop]: Abstraction has 254 states and 273 transitions. [2021-02-22 01:03:42,634 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-22 01:03:42,634 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 273 transitions. [2021-02-22 01:03:42,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-02-22 01:03:42,637 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:03:42,637 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] [2021-02-22 01:03:42,637 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-22 01:03:42,638 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:03:42,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:03:42,638 INFO L82 PathProgramCache]: Analyzing trace with hash -974345890, now seen corresponding path program 1 times [2021-02-22 01:03:42,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:03:42,639 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2040338662] [2021-02-22 01:03:42,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:03:42,642 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:03:42,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:42,739 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:42,739 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:03:42,743 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:42,743 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:03:42,744 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:42,745 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:03:42,746 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:42,746 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:03:42,747 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:42,749 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:03:42,749 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:42,750 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:03:42,755 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:42,759 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:03:42,768 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:42,769 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:43,070 WARN L202 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 01:03:43,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:03:43,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:43,121 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:43,121 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:43,122 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:43,122 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 01:03:43,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 01:03:43,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:43,130 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:43,131 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:43,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 01:03:43,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:43,133 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:43,134 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:43,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 01:03:43,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:43,143 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:43,144 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:43,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 01:03:43,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:43,147 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:43,148 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:43,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-22 01:03:43,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:43,160 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:43,161 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:43,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-22 01:03:43,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:43,174 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:43,175 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:43,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 01:03:43,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:43,178 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:43,178 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:43,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 01:03:43,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:43,180 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:43,181 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:43,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-02-22 01:03:43,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:43,184 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:43,184 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:43,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-02-22 01:03:43,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:43,189 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:43,189 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:43,190 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:43,190 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:03:43,201 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:43,201 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:03:43,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2021-02-22 01:03:43,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:43,215 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:43,215 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:43,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:03:43,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2040338662] [2021-02-22 01:03:43,258 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:03:43,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-22 01:03:43,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708277027] [2021-02-22 01:03:43,259 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-22 01:03:43,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:03:43,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-22 01:03:43,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-22 01:03:43,260 INFO L87 Difference]: Start difference. First operand 254 states and 273 transitions. Second operand 10 states. [2021-02-22 01:03:43,990 WARN L202 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-22 01:03:46,530 WARN L202 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 01:03:46,978 WARN L202 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-22 01:03:47,361 WARN L202 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 01:03:47,747 WARN L202 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-22 01:03:48,103 WARN L202 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 01:03:48,703 WARN L202 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-22 01:03:49,172 WARN L202 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 01:03:49,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:03:49,921 INFO L93 Difference]: Finished difference Result 694 states and 853 transitions. [2021-02-22 01:03:49,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-02-22 01:03:49,922 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 185 [2021-02-22 01:03:49,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:03:49,928 INFO L225 Difference]: With dead ends: 694 [2021-02-22 01:03:49,928 INFO L226 Difference]: Without dead ends: 555 [2021-02-22 01:03:49,930 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 [2021-02-22 01:03:49,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2021-02-22 01:03:50,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 387. [2021-02-22 01:03:50,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2021-02-22 01:03:50,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 429 transitions. [2021-02-22 01:03:50,108 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 429 transitions. Word has length 185 [2021-02-22 01:03:50,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:03:50,109 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 429 transitions. [2021-02-22 01:03:50,109 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-22 01:03:50,109 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 429 transitions. [2021-02-22 01:03:50,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-02-22 01:03:50,113 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:03:50,113 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] [2021-02-22 01:03:50,113 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-22 01:03:50,113 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:03:50,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:03:50,114 INFO L82 PathProgramCache]: Analyzing trace with hash -945997450, now seen corresponding path program 1 times [2021-02-22 01:03:50,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:03:50,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1481123155] [2021-02-22 01:03:50,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:03:50,118 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:03:50,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:50,176 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:50,177 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:03:50,180 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:50,180 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:03:50,181 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:50,181 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:03:50,182 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:50,183 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:03:50,183 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:50,184 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:03:50,184 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:50,186 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:50,469 WARN L202 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 01:03:50,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:03:50,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:50,554 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:50,555 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:50,556 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:50,556 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:03:50,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 01:03:50,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:50,568 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:50,570 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:50,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 01:03:50,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:50,573 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:50,574 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:50,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 01:03:50,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:50,578 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:50,578 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:50,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 01:03:50,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:50,585 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:50,586 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:50,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-22 01:03:50,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:50,597 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:50,597 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:50,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-22 01:03:50,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:50,608 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:50,608 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:50,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-02-22 01:03:50,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:50,622 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:50,623 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:50,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 01:03:50,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:50,626 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:50,626 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:50,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 01:03:50,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:50,629 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:50,629 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:50,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-02-22 01:03:50,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:50,632 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:50,632 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:50,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-02-22 01:03:50,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:50,635 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:50,635 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:50,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-02-22 01:03:50,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:03:50,637 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:03:50,638 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:03:50,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:03:50,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1481123155] [2021-02-22 01:03:50,684 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:03:50,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-22 01:03:50,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880129654] [2021-02-22 01:03:50,686 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-22 01:03:50,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:03:50,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-22 01:03:50,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-02-22 01:03:50,689 INFO L87 Difference]: Start difference. First operand 387 states and 429 transitions. Second operand 7 states. [2021-02-22 01:03:51,367 WARN L202 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-22 01:03:52,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:03:52,476 INFO L93 Difference]: Finished difference Result 619 states and 723 transitions. [2021-02-22 01:03:52,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-22 01:03:52,477 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 190 [2021-02-22 01:03:52,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:03:52,480 INFO L225 Difference]: With dead ends: 619 [2021-02-22 01:03:52,480 INFO L226 Difference]: Without dead ends: 347 [2021-02-22 01:03:52,481 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 [2021-02-22 01:03:52,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2021-02-22 01:03:52,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 281. [2021-02-22 01:03:52,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2021-02-22 01:03:52,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 296 transitions. [2021-02-22 01:03:52,576 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 296 transitions. Word has length 190 [2021-02-22 01:03:52,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:03:52,578 INFO L480 AbstractCegarLoop]: Abstraction has 281 states and 296 transitions. [2021-02-22 01:03:52,578 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-22 01:03:52,578 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 296 transitions. [2021-02-22 01:03:52,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-02-22 01:03:52,581 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:03:52,581 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] [2021-02-22 01:03:52,582 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-22 01:03:52,582 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:03:52,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:03:52,582 INFO L82 PathProgramCache]: Analyzing trace with hash 1472450222, now seen corresponding path program 1 times [2021-02-22 01:03:52,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:03:52,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [671672184] [2021-02-22 01:03:52,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:03:52,586 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:03:52,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 01:03:52,658 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 01:03:52,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 01:03:52,731 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 01:03:52,934 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-22 01:03:52,935 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-22 01:03:52,936 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-22 01:03:52,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.02 01:03:52 BoogieIcfgContainer [2021-02-22 01:03:52,960 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-22 01:03:52,961 INFO L168 Benchmark]: Toolchain (without parser) took 23639.58 ms. Allocated memory was 151.0 MB in the beginning and 459.3 MB in the end (delta: 308.3 MB). Free memory was 126.0 MB in the beginning and 304.2 MB in the end (delta: -178.2 MB). Peak memory consumption was 132.1 MB. Max. memory is 8.0 GB. [2021-02-22 01:03:52,962 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 124.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 01:03:52,962 INFO L168 Benchmark]: CACSL2BoogieTranslator took 656.98 ms. Allocated memory is still 151.0 MB. Free memory was 124.9 MB in the beginning and 103.5 MB in the end (delta: 21.4 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2021-02-22 01:03:52,963 INFO L168 Benchmark]: Boogie Preprocessor took 166.84 ms. Allocated memory is still 151.0 MB. Free memory was 103.5 MB in the beginning and 131.8 MB in the end (delta: -28.4 MB). Peak memory consumption was 6.1 MB. Max. memory is 8.0 GB. [2021-02-22 01:03:52,963 INFO L168 Benchmark]: RCFGBuilder took 1403.27 ms. Allocated memory is still 151.0 MB. Free memory was 131.8 MB in the beginning and 87.2 MB in the end (delta: 44.6 MB). Peak memory consumption was 66.1 MB. Max. memory is 8.0 GB. [2021-02-22 01:03:52,963 INFO L168 Benchmark]: TraceAbstraction took 21393.36 ms. Allocated memory was 151.0 MB in the beginning and 459.3 MB in the end (delta: 308.3 MB). Free memory was 86.7 MB in the beginning and 304.2 MB in the end (delta: -217.5 MB). Peak memory consumption was 90.2 MB. Max. memory is 8.0 GB. [2021-02-22 01:03:52,965 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 124.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 656.98 ms. Allocated memory is still 151.0 MB. Free memory was 124.9 MB in the beginning and 103.5 MB in the end (delta: 21.4 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 166.84 ms. Allocated memory is still 151.0 MB. Free memory was 103.5 MB in the beginning and 131.8 MB in the end (delta: -28.4 MB). Peak memory consumption was 6.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1403.27 ms. Allocated memory is still 151.0 MB. Free memory was 131.8 MB in the beginning and 87.2 MB in the end (delta: 44.6 MB). Peak memory consumption was 66.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 21393.36 ms. Allocated memory was 151.0 MB in the beginning and 459.3 MB in the end (delta: 308.3 MB). Free memory was 86.7 MB in the beginning and 304.2 MB in the end (delta: -217.5 MB). Peak memory consumption was 90.2 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: 21.3s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 16.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1156 SDtfs, 2122 SDslu, 1435 SDs, 0 SdLazy, 3033 SolverSat, 682 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 8.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 168 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 7.4s 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: 0.6s 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...