/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_spec1_product56.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 03:10:56,607 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 03:10:56,609 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 03:10:56,644 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-24 03:10:56,645 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-24 03:10:56,646 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-24 03:10:56,648 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-24 03:10:56,650 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-24 03:10:56,652 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-24 03:10:56,653 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-24 03:10:56,654 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-24 03:10:56,656 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-24 03:10:56,656 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 03:10:56,657 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 03:10:56,659 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 03:10:56,660 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 03:10:56,661 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 03:10:56,671 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 03:10:56,675 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 03:10:56,677 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 03:10:56,679 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 03:10:56,681 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 03:10:56,682 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 03:10:56,683 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 03:10:56,686 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-24 03:10:56,686 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-24 03:10:56,687 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-24 03:10:56,688 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-24 03:10:56,688 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-24 03:10:56,689 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-24 03:10:56,690 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-24 03:10:56,690 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-24 03:10:56,691 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-24 03:10:56,692 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-24 03:10:56,693 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-24 03:10:56,694 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-24 03:10:56,695 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-24 03:10:56,695 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-24 03:10:56,695 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 03:10:56,696 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 03:10:56,697 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 03:10:56,698 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-24 03:10:56,711 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 03:10:56,711 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 03:10:56,713 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 03:10:56,713 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 03:10:56,713 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 03:10:56,713 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 03:10:56,714 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 03:10:56,714 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 03:10:56,714 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 03:10:56,714 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 03:10:56,715 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 03:10:56,715 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 03:10:56,715 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 03:10:56,716 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 03:10:56,716 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 03:10:56,716 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 03:10:56,716 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 03:10:56,716 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 03:10:56,717 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 03:10:56,717 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 03:10:56,717 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 03:10:56,717 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 03:10:56,718 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-24 03:10:56,718 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-24 03:10:57,049 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 03:10:57,075 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 03:10:57,080 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 03:10:57,081 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 03:10:57,082 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 03:10:57,084 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product56.cil.c [2021-02-24 03:10:57,162 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0bc222cd8/e13b3eeceeaa4caaab74e91db298b007/FLAG9f85d4b08 [2021-02-24 03:10:57,833 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 03:10:57,834 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product56.cil.c [2021-02-24 03:10:57,860 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0bc222cd8/e13b3eeceeaa4caaab74e91db298b007/FLAG9f85d4b08 [2021-02-24 03:10:58,160 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0bc222cd8/e13b3eeceeaa4caaab74e91db298b007 [2021-02-24 03:10:58,166 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 03:10:58,185 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 03:10:58,190 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 03:10:58,190 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 03:10:58,194 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 03:10:58,195 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 03:10:58" (1/1) ... [2021-02-24 03:10:58,196 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c9e1358 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:10:58, skipping insertion in model container [2021-02-24 03:10:58,196 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 03:10:58" (1/1) ... [2021-02-24 03:10:58,206 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 03:10:58,284 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 03:10:58,664 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_spec1_product56.cil.c[16355,16368] [2021-02-24 03:10:58,682 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 03:10:58,693 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 03:10:58,786 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_spec1_product56.cil.c[16355,16368] [2021-02-24 03:10:58,803 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 03:10:58,842 INFO L208 MainTranslator]: Completed translation [2021-02-24 03:10:58,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:10:58 WrapperNode [2021-02-24 03:10:58,843 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 03:10:58,844 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 03:10:58,844 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 03:10:58,844 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 03:10:58,861 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:10:58" (1/1) ... [2021-02-24 03:10:58,861 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:10:58" (1/1) ... [2021-02-24 03:10:58,879 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:10:58" (1/1) ... [2021-02-24 03:10:58,879 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:10:58" (1/1) ... [2021-02-24 03:10:58,912 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:10:58" (1/1) ... [2021-02-24 03:10:58,926 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:10:58" (1/1) ... [2021-02-24 03:10:58,934 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:10:58" (1/1) ... [2021-02-24 03:10:58,978 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 03:10:58,979 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 03:10:58,979 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 03:10:58,979 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 03:10:58,980 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:10:58" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 03:10:59,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 03:10:59,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 03:10:59,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-24 03:10:59,095 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 03:10:59,095 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-24 03:10:59,095 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-24 03:10:59,095 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-24 03:10:59,096 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-24 03:10:59,096 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-24 03:10:59,096 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-24 03:10:59,096 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-24 03:10:59,096 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-24 03:10:59,096 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-24 03:10:59,097 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2021-02-24 03:10:59,097 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2021-02-24 03:10:59,097 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-24 03:10:59,097 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-24 03:10:59,097 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-24 03:10:59,097 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-24 03:10:59,098 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-24 03:10:59,098 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-24 03:10:59,098 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-24 03:10:59,098 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2021-02-24 03:10:59,098 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-24 03:10:59,099 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2021-02-24 03:10:59,099 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-24 03:10:59,099 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-24 03:10:59,099 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-24 03:10:59,099 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-24 03:10:59,099 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2021-02-24 03:10:59,100 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-24 03:10:59,100 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-24 03:10:59,100 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-24 03:10:59,100 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-24 03:10:59,100 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-24 03:10:59,100 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 03:10:59,100 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-24 03:10:59,101 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-24 03:10:59,101 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-24 03:10:59,101 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-24 03:10:59,101 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-24 03:10:59,101 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-24 03:10:59,101 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-24 03:10:59,101 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2021-02-24 03:10:59,102 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 03:10:59,102 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 03:10:59,102 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 03:10:59,102 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 03:10:59,102 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-24 03:10:59,102 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-24 03:10:59,103 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-24 03:10:59,103 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-24 03:10:59,103 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-24 03:10:59,103 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-24 03:10:59,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-24 03:10:59,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 03:10:59,103 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-24 03:10:59,104 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-24 03:10:59,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 03:10:59,104 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-24 03:10:59,104 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-24 03:10:59,104 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 03:10:59,104 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-24 03:10:59,105 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-24 03:10:59,105 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-24 03:10:59,105 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-24 03:10:59,105 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-24 03:10:59,105 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2021-02-24 03:10:59,105 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-24 03:10:59,105 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-24 03:10:59,106 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-24 03:10:59,106 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-24 03:10:59,106 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-24 03:10:59,106 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-24 03:10:59,106 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-24 03:10:59,106 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-24 03:10:59,107 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2021-02-24 03:10:59,107 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-24 03:10:59,107 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-24 03:10:59,107 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-24 03:10:59,107 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-24 03:10:59,107 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2021-02-24 03:10:59,107 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-24 03:10:59,108 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-24 03:10:59,108 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-24 03:10:59,108 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2021-02-24 03:10:59,108 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2021-02-24 03:10:59,108 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2021-02-24 03:10:59,108 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-24 03:10:59,109 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-24 03:10:59,109 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-24 03:10:59,109 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-24 03:10:59,109 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-24 03:10:59,109 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-24 03:10:59,109 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-24 03:10:59,109 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-24 03:10:59,110 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-24 03:10:59,110 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 03:10:59,110 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-24 03:10:59,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 03:10:59,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 03:10:59,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 03:11:00,801 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 03:11:00,801 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-24 03:11:00,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 03:11:00 BoogieIcfgContainer [2021-02-24 03:11:00,804 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 03:11:00,807 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 03:11:00,807 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 03:11:00,810 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 03:11:00,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 03:10:58" (1/3) ... [2021-02-24 03:11:00,812 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16420dce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 03:11:00, skipping insertion in model container [2021-02-24 03:11:00,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:10:58" (2/3) ... [2021-02-24 03:11:00,812 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16420dce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 03:11:00, skipping insertion in model container [2021-02-24 03:11:00,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 03:11:00" (3/3) ... [2021-02-24 03:11:00,814 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product56.cil.c [2021-02-24 03:11:00,821 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 03:11:00,827 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 03:11:00,846 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 03:11:00,871 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 03:11:00,871 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 03:11:00,872 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-24 03:11:00,872 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 03:11:00,872 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 03:11:00,872 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 03:11:00,872 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 03:11:00,873 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 03:11:00,897 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states. [2021-02-24 03:11:00,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-24 03:11:00,918 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:11:00,919 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] [2021-02-24 03:11:00,920 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:11:00,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:11:00,927 INFO L82 PathProgramCache]: Analyzing trace with hash -761542394, now seen corresponding path program 1 times [2021-02-24 03:11:00,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:11:00,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [344326293] [2021-02-24 03:11:00,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:11:01,020 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:11:01,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:01,412 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:01,414 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:01,415 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:01,417 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:01,939 WARN L202 SmtUtils]: Spent 505.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:11:01,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:11:01,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:02,016 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:02,017 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:02,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:11:02,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:02,045 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:02,047 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:02,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:11:02,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:02,054 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:02,054 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:02,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:11:02,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:02,063 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:02,064 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:02,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:11:02,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:02,071 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:02,072 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:02,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-24 03:11:02,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:02,079 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:02,081 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:02,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-24 03:11:02,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:02,086 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:02,087 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:02,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:11:02,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [344326293] [2021-02-24 03:11:02,128 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:11:02,128 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-24 03:11:02,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225375444] [2021-02-24 03:11:02,134 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-24 03:11:02,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:11:02,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-24 03:11:02,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 03:11:02,152 INFO L87 Difference]: Start difference. First operand 348 states. Second operand 3 states. [2021-02-24 03:11:03,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:11:03,810 INFO L93 Difference]: Finished difference Result 560 states and 668 transitions. [2021-02-24 03:11:03,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-24 03:11:03,812 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-24 03:11:03,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:11:03,829 INFO L225 Difference]: With dead ends: 560 [2021-02-24 03:11:03,829 INFO L226 Difference]: Without dead ends: 342 [2021-02-24 03:11:03,835 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 03:11:03,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2021-02-24 03:11:04,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 296. [2021-02-24 03:11:04,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 296 states. [2021-02-24 03:11:04,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 325 transitions. [2021-02-24 03:11:04,012 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 325 transitions. Word has length 147 [2021-02-24 03:11:04,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:11:04,013 INFO L480 AbstractCegarLoop]: Abstraction has 296 states and 325 transitions. [2021-02-24 03:11:04,014 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-24 03:11:04,014 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 325 transitions. [2021-02-24 03:11:04,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-24 03:11:04,018 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:11:04,018 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] [2021-02-24 03:11:04,019 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 03:11:04,019 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:11:04,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:11:04,020 INFO L82 PathProgramCache]: Analyzing trace with hash -249455000, now seen corresponding path program 1 times [2021-02-24 03:11:04,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:11:04,020 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1535670827] [2021-02-24 03:11:04,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:11:04,024 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:11:04,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:04,184 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:04,185 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:04,185 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:04,186 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:04,189 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:04,190 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:04,404 WARN L202 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:11:04,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:11:04,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:04,447 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:04,448 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:04,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:11:04,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:04,456 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:04,456 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:04,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:11:04,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:04,458 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:04,459 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:04,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:11:04,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:04,464 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:04,465 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:04,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:11:04,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:04,467 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:04,468 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:04,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-24 03:11:04,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:04,470 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:04,470 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:04,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-24 03:11:04,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:04,473 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:04,473 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:04,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:11:04,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1535670827] [2021-02-24 03:11:04,503 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:11:04,503 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-24 03:11:04,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417001873] [2021-02-24 03:11:04,505 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-24 03:11:04,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:11:04,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-24 03:11:04,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 03:11:04,506 INFO L87 Difference]: Start difference. First operand 296 states and 325 transitions. Second operand 4 states. [2021-02-24 03:11:05,089 WARN L202 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-24 03:11:06,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:11:06,220 INFO L93 Difference]: Finished difference Result 466 states and 530 transitions. [2021-02-24 03:11:06,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-24 03:11:06,221 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-24 03:11:06,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:11:06,226 INFO L225 Difference]: With dead ends: 466 [2021-02-24 03:11:06,227 INFO L226 Difference]: Without dead ends: 325 [2021-02-24 03:11:06,229 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-24 03:11:06,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2021-02-24 03:11:06,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 286. [2021-02-24 03:11:06,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2021-02-24 03:11:06,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 312 transitions. [2021-02-24 03:11:06,360 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 312 transitions. Word has length 148 [2021-02-24 03:11:06,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:11:06,360 INFO L480 AbstractCegarLoop]: Abstraction has 286 states and 312 transitions. [2021-02-24 03:11:06,360 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-24 03:11:06,361 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 312 transitions. [2021-02-24 03:11:06,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-02-24 03:11:06,363 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:11:06,363 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] [2021-02-24 03:11:06,364 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 03:11:06,364 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:11:06,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:11:06,365 INFO L82 PathProgramCache]: Analyzing trace with hash 1117022005, now seen corresponding path program 1 times [2021-02-24 03:11:06,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:11:06,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [915761696] [2021-02-24 03:11:06,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:11:06,369 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:11:06,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:06,447 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:06,448 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:06,449 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:06,449 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:06,452 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:06,452 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:06,455 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:06,456 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:06,457 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:06,458 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 03:11:06,462 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:06,462 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:06,665 WARN L202 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:11:06,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:11:06,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:06,702 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:06,703 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:06,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:11:06,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:06,710 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:06,710 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:06,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:11:06,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:06,712 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:06,713 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:06,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:11:06,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:06,720 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:06,720 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:06,728 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:06,728 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 03:11:06,740 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:06,740 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 03:11:06,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:11:06,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:06,754 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:06,755 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:06,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-24 03:11:06,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:06,768 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:06,769 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:06,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-02-24 03:11:06,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:06,782 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:06,782 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:06,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-24 03:11:06,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:06,785 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:06,786 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:06,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:11:06,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [915761696] [2021-02-24 03:11:06,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:11:06,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-24 03:11:06,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321450022] [2021-02-24 03:11:06,850 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-24 03:11:06,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:11:06,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-24 03:11:06,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-24 03:11:06,851 INFO L87 Difference]: Start difference. First operand 286 states and 312 transitions. Second operand 10 states. [2021-02-24 03:11:07,437 WARN L202 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-24 03:11:07,769 WARN L202 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-24 03:11:08,043 WARN L202 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-24 03:11:08,346 WARN L202 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:11:08,638 WARN L202 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-24 03:11:08,888 WARN L202 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:11:09,740 WARN L202 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-24 03:11:12,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:11:12,438 INFO L93 Difference]: Finished difference Result 787 states and 922 transitions. [2021-02-24 03:11:12,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-24 03:11:12,440 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 161 [2021-02-24 03:11:12,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:11:12,453 INFO L225 Difference]: With dead ends: 787 [2021-02-24 03:11:12,453 INFO L226 Difference]: Without dead ends: 616 [2021-02-24 03:11:12,458 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2021-02-24 03:11:12,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2021-02-24 03:11:12,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 517. [2021-02-24 03:11:12,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 517 states. [2021-02-24 03:11:12,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 583 transitions. [2021-02-24 03:11:12,743 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 583 transitions. Word has length 161 [2021-02-24 03:11:12,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:11:12,744 INFO L480 AbstractCegarLoop]: Abstraction has 517 states and 583 transitions. [2021-02-24 03:11:12,744 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-24 03:11:12,744 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 583 transitions. [2021-02-24 03:11:12,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-02-24 03:11:12,747 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:11:12,747 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 03:11:12,747 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 03:11:12,747 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:11:12,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:11:12,748 INFO L82 PathProgramCache]: Analyzing trace with hash 716668618, now seen corresponding path program 1 times [2021-02-24 03:11:12,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:11:12,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [814405028] [2021-02-24 03:11:12,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:11:12,752 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:11:12,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:12,855 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:12,855 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:12,858 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:12,858 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:12,859 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:12,859 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:12,860 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:12,860 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:12,861 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:12,861 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:12,865 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:12,866 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:12,869 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:12,870 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:13,087 WARN L202 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:11:13,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:11:13,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:13,136 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:13,137 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:13,138 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:13,138 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:13,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:11:13,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:13,149 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:13,151 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:13,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:11:13,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:13,155 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:13,155 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:13,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:11:13,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:13,162 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:13,163 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:13,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:11:13,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:13,165 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:13,166 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:13,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-24 03:11:13,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:13,180 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:13,181 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:13,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-02-24 03:11:13,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:13,184 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:13,185 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:13,185 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:13,186 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:13,194 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:13,194 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:13,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-02-24 03:11:13,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:13,205 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:13,205 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:13,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:11:13,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [814405028] [2021-02-24 03:11:13,247 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:11:13,247 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-24 03:11:13,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209964826] [2021-02-24 03:11:13,248 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-24 03:11:13,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:11:13,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-24 03:11:13,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-24 03:11:13,249 INFO L87 Difference]: Start difference. First operand 517 states and 583 transitions. Second operand 9 states. [2021-02-24 03:11:13,733 WARN L202 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-24 03:11:14,808 WARN L202 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:11:15,100 WARN L202 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-24 03:11:15,503 WARN L202 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-24 03:11:15,791 WARN L202 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:11:16,144 WARN L202 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:11:16,531 WARN L202 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-24 03:11:16,819 WARN L202 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:11:17,447 WARN L202 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-24 03:11:18,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:11:18,793 INFO L93 Difference]: Finished difference Result 1447 states and 1739 transitions. [2021-02-24 03:11:18,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-24 03:11:18,793 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 166 [2021-02-24 03:11:18,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:11:18,801 INFO L225 Difference]: With dead ends: 1447 [2021-02-24 03:11:18,801 INFO L226 Difference]: Without dead ends: 1045 [2021-02-24 03:11:18,803 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2021-02-24 03:11:18,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2021-02-24 03:11:19,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 880. [2021-02-24 03:11:19,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 880 states. [2021-02-24 03:11:19,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 1007 transitions. [2021-02-24 03:11:19,320 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 1007 transitions. Word has length 166 [2021-02-24 03:11:19,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:11:19,321 INFO L480 AbstractCegarLoop]: Abstraction has 880 states and 1007 transitions. [2021-02-24 03:11:19,321 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-24 03:11:19,321 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 1007 transitions. [2021-02-24 03:11:19,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-02-24 03:11:19,327 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:11:19,327 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] [2021-02-24 03:11:19,327 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-24 03:11:19,328 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:11:19,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:11:19,328 INFO L82 PathProgramCache]: Analyzing trace with hash -795426880, now seen corresponding path program 1 times [2021-02-24 03:11:19,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:11:19,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1461764671] [2021-02-24 03:11:19,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:11:19,332 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:11:19,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:19,402 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:19,403 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:19,405 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:19,405 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:19,406 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:19,406 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:19,406 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:19,407 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:19,407 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:19,408 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:19,408 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:19,413 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:19,414 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:19,414 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:19,417 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:19,418 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:19,422 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:19,423 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:19,649 WARN L202 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:11:19,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:11:19,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:19,693 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:19,693 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:19,694 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:19,694 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:19,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:11:19,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:19,702 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:19,702 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:19,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:11:19,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:19,705 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:19,705 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:19,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:11:19,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:19,708 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:19,709 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:19,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:11:19,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:19,711 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:19,712 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:19,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-24 03:11:19,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:19,723 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:19,724 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:19,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-02-24 03:11:19,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:19,741 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:19,741 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:19,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-24 03:11:19,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:19,745 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:19,745 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:19,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-02-24 03:11:19,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:19,749 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:19,749 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:19,750 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:19,750 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:19,758 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:19,759 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:19,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:11:19,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1461764671] [2021-02-24 03:11:19,812 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:11:19,812 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-24 03:11:19,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98637232] [2021-02-24 03:11:19,812 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-24 03:11:19,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:11:19,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-24 03:11:19,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-24 03:11:19,814 INFO L87 Difference]: Start difference. First operand 880 states and 1007 transitions. Second operand 10 states. [2021-02-24 03:11:20,337 WARN L202 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-24 03:11:21,524 WARN L202 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:11:21,804 WARN L202 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-24 03:11:22,110 WARN L202 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:11:22,407 WARN L202 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-24 03:11:22,668 WARN L202 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:11:23,428 WARN L202 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-24 03:11:23,665 WARN L202 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:11:24,029 WARN L202 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-24 03:11:25,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:11:25,452 INFO L93 Difference]: Finished difference Result 2255 states and 2786 transitions. [2021-02-24 03:11:25,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-24 03:11:25,453 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 171 [2021-02-24 03:11:25,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:11:25,463 INFO L225 Difference]: With dead ends: 2255 [2021-02-24 03:11:25,463 INFO L226 Difference]: Without dead ends: 1490 [2021-02-24 03:11:25,467 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2021-02-24 03:11:25,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1490 states. [2021-02-24 03:11:26,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1490 to 1222. [2021-02-24 03:11:26,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1222 states. [2021-02-24 03:11:26,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1222 states to 1222 states and 1414 transitions. [2021-02-24 03:11:26,130 INFO L78 Accepts]: Start accepts. Automaton has 1222 states and 1414 transitions. Word has length 171 [2021-02-24 03:11:26,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:11:26,130 INFO L480 AbstractCegarLoop]: Abstraction has 1222 states and 1414 transitions. [2021-02-24 03:11:26,130 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-24 03:11:26,131 INFO L276 IsEmpty]: Start isEmpty. Operand 1222 states and 1414 transitions. [2021-02-24 03:11:26,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-02-24 03:11:26,135 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:11:26,135 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 03:11:26,135 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-24 03:11:26,135 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:11:26,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:11:26,136 INFO L82 PathProgramCache]: Analyzing trace with hash 1832190563, now seen corresponding path program 1 times [2021-02-24 03:11:26,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:11:26,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1700910685] [2021-02-24 03:11:26,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:11:26,139 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:11:26,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:26,192 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:26,192 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:26,193 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:26,193 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:26,406 WARN L202 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:11:26,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:11:26,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:26,433 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:26,433 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:26,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:11:26,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:26,440 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:26,441 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:26,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:11:26,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:26,442 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:26,445 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:26,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:11:26,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:26,449 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:26,451 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:26,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:11:26,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:26,454 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:26,455 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:26,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-24 03:11:26,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:26,463 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:26,463 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:26,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-02-24 03:11:26,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:26,471 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:26,472 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:26,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-02-24 03:11:26,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:26,487 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:26,533 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:26,533 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:26,534 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:26,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 03:11:26,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:26,540 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:26,540 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:26,541 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:26,541 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:26,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 03:11:26,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:26,549 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:26,549 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:26,550 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:26,550 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:26,557 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:26,557 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:26,564 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:26,565 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:26,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 03:11:26,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:26,573 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:26,573 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:26,574 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:26,575 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 03:11:26,585 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:26,586 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 03:11:26,597 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:26,598 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 03:11:26,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 03:11:26,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:26,612 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:26,613 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:26,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-24 03:11:26,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:26,615 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:26,616 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:26,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-02-24 03:11:26,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:26,622 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:26,622 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:26,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-02-24 03:11:26,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:26,624 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:26,625 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:26,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:11:26,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1700910685] [2021-02-24 03:11:26,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:11:26,681 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-24 03:11:26,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881293876] [2021-02-24 03:11:26,682 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-24 03:11:26,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:11:26,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-24 03:11:26,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-02-24 03:11:26,683 INFO L87 Difference]: Start difference. First operand 1222 states and 1414 transitions. Second operand 11 states. [2021-02-24 03:11:28,109 WARN L202 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:11:28,418 WARN L202 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-24 03:11:28,718 WARN L202 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2021-02-24 03:11:29,007 WARN L202 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-24 03:11:29,278 WARN L202 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-24 03:11:29,535 WARN L202 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-24 03:11:31,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:11:31,397 INFO L93 Difference]: Finished difference Result 2946 states and 3688 transitions. [2021-02-24 03:11:31,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-24 03:11:31,398 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 209 [2021-02-24 03:11:31,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:11:31,410 INFO L225 Difference]: With dead ends: 2946 [2021-02-24 03:11:31,410 INFO L226 Difference]: Without dead ends: 1839 [2021-02-24 03:11:31,414 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-02-24 03:11:31,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1839 states. [2021-02-24 03:11:31,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1839 to 1260. [2021-02-24 03:11:31,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1260 states. [2021-02-24 03:11:31,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1260 states to 1260 states and 1454 transitions. [2021-02-24 03:11:31,959 INFO L78 Accepts]: Start accepts. Automaton has 1260 states and 1454 transitions. Word has length 209 [2021-02-24 03:11:31,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:11:31,960 INFO L480 AbstractCegarLoop]: Abstraction has 1260 states and 1454 transitions. [2021-02-24 03:11:31,960 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-24 03:11:31,960 INFO L276 IsEmpty]: Start isEmpty. Operand 1260 states and 1454 transitions. [2021-02-24 03:11:31,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-02-24 03:11:31,964 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:11:31,964 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 03:11:31,964 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-24 03:11:31,965 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:11:31,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:11:31,965 INFO L82 PathProgramCache]: Analyzing trace with hash -2049145341, now seen corresponding path program 1 times [2021-02-24 03:11:31,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:11:31,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1322801873] [2021-02-24 03:11:31,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:11:31,968 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:11:31,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:32,025 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:32,028 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:32,029 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:32,029 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:32,031 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:32,031 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:32,034 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:32,034 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:32,034 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:32,035 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:32,263 WARN L202 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:11:32,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:11:32,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:32,291 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:32,291 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:32,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:11:32,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:32,297 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:32,301 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:32,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:11:32,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:32,303 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:32,304 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:32,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:11:32,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:32,308 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:32,308 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:32,309 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:32,310 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 03:11:32,322 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:32,323 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 03:11:32,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:11:32,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:32,334 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:32,334 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:32,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-24 03:11:32,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:32,345 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:32,345 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:32,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-02-24 03:11:32,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:32,356 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:32,356 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:32,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-02-24 03:11:32,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:32,372 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:32,372 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:32,373 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:32,373 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:32,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 03:11:32,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:32,380 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:32,380 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:32,381 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:32,381 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:32,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 03:11:32,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:32,387 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:32,387 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:32,388 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:32,388 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:32,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 03:11:32,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:32,393 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:32,394 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:32,394 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:32,394 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:32,404 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:32,404 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:32,414 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:32,415 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:32,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 03:11:32,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:32,419 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:32,419 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:32,420 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:32,420 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:32,431 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:32,432 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:32,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-24 03:11:32,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:32,447 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:32,447 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:32,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-02-24 03:11:32,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:32,453 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:32,454 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:32,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-02-24 03:11:32,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:32,456 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:32,457 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:32,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:11:32,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1322801873] [2021-02-24 03:11:32,503 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:11:32,503 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-24 03:11:32,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735888376] [2021-02-24 03:11:32,504 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-24 03:11:32,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:11:32,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-24 03:11:32,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-02-24 03:11:32,505 INFO L87 Difference]: Start difference. First operand 1260 states and 1454 transitions. Second operand 14 states. [2021-02-24 03:11:33,069 WARN L202 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:11:33,340 WARN L202 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-24 03:11:33,648 WARN L202 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-24 03:11:33,954 WARN L202 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-24 03:11:34,235 WARN L202 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-24 03:11:35,232 WARN L202 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-24 03:11:35,499 WARN L202 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-24 03:11:35,808 WARN L202 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-24 03:11:36,114 WARN L202 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-24 03:11:36,396 WARN L202 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-24 03:11:38,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:11:38,723 INFO L93 Difference]: Finished difference Result 3028 states and 3847 transitions. [2021-02-24 03:11:38,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-02-24 03:11:38,724 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 209 [2021-02-24 03:11:38,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:11:38,736 INFO L225 Difference]: With dead ends: 3028 [2021-02-24 03:11:38,736 INFO L226 Difference]: Without dead ends: 1883 [2021-02-24 03:11:38,741 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2021-02-24 03:11:38,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1883 states. [2021-02-24 03:11:39,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1883 to 1284. [2021-02-24 03:11:39,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1284 states. [2021-02-24 03:11:39,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1284 states to 1284 states and 1478 transitions. [2021-02-24 03:11:39,446 INFO L78 Accepts]: Start accepts. Automaton has 1284 states and 1478 transitions. Word has length 209 [2021-02-24 03:11:39,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:11:39,449 INFO L480 AbstractCegarLoop]: Abstraction has 1284 states and 1478 transitions. [2021-02-24 03:11:39,450 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-24 03:11:39,450 INFO L276 IsEmpty]: Start isEmpty. Operand 1284 states and 1478 transitions. [2021-02-24 03:11:39,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-02-24 03:11:39,454 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:11:39,454 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 03:11:39,454 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-24 03:11:39,455 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:11:39,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:11:39,455 INFO L82 PathProgramCache]: Analyzing trace with hash -2118663450, now seen corresponding path program 1 times [2021-02-24 03:11:39,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:11:39,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [214613514] [2021-02-24 03:11:39,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:11:39,458 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:11:39,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:39,515 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:39,516 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:39,518 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:39,519 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:39,519 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:39,519 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:39,520 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:39,520 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:39,520 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:39,521 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 03:11:39,521 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:39,522 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:39,717 WARN L202 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:11:39,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:11:39,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:39,754 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:39,754 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:39,755 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:39,755 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 03:11:39,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:11:39,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:39,761 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:39,762 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:39,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:11:39,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:39,764 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:39,764 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:39,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:11:39,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:39,766 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:39,766 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:39,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:11:39,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:39,768 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:39,769 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:39,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-24 03:11:39,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:39,777 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:39,777 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:39,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-02-24 03:11:39,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:39,786 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:39,787 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:39,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-02-24 03:11:39,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:39,800 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:39,801 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:39,801 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:39,802 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:11:39,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 03:11:39,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:39,814 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:39,815 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:39,815 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:39,816 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 03:11:39,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 03:11:39,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:39,828 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:39,828 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:39,829 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:39,829 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 03:11:39,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 03:11:39,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:39,840 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:39,841 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:39,841 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:39,842 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 03:11:39,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 03:11:39,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:39,852 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:39,852 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:39,853 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:39,853 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 03:11:39,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-02-24 03:11:39,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:39,863 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:39,864 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:39,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-02-24 03:11:39,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:39,870 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:39,871 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:39,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-02-24 03:11:39,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:11:39,873 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:11:39,873 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:11:39,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:11:39,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [214613514] [2021-02-24 03:11:39,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:11:39,925 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-24 03:11:39,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801566688] [2021-02-24 03:11:39,926 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-24 03:11:39,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:11:39,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-24 03:11:39,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-02-24 03:11:39,927 INFO L87 Difference]: Start difference. First operand 1284 states and 1478 transitions. Second operand 8 states. [2021-02-24 03:11:40,432 WARN L202 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-24 03:11:41,009 WARN L202 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-24 03:11:45,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:11:45,480 INFO L93 Difference]: Finished difference Result 4598 states and 5888 transitions. [2021-02-24 03:11:45,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-02-24 03:11:45,480 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 209 [2021-02-24 03:11:45,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:11:45,502 INFO L225 Difference]: With dead ends: 4598 [2021-02-24 03:11:45,503 INFO L226 Difference]: Without dead ends: 3429 [2021-02-24 03:11:45,508 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 43 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2021-02-24 03:11:45,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3429 states. [2021-02-24 03:11:46,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3429 to 2504. [2021-02-24 03:11:46,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2504 states. [2021-02-24 03:11:46,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2504 states to 2504 states and 2910 transitions. [2021-02-24 03:11:46,611 INFO L78 Accepts]: Start accepts. Automaton has 2504 states and 2910 transitions. Word has length 209 [2021-02-24 03:11:46,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:11:46,611 INFO L480 AbstractCegarLoop]: Abstraction has 2504 states and 2910 transitions. [2021-02-24 03:11:46,612 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-24 03:11:46,612 INFO L276 IsEmpty]: Start isEmpty. Operand 2504 states and 2910 transitions. [2021-02-24 03:11:46,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2021-02-24 03:11:46,618 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:11:46,618 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 03:11:46,618 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-24 03:11:46,618 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:11:46,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:11:46,619 INFO L82 PathProgramCache]: Analyzing trace with hash 142007820, now seen corresponding path program 1 times [2021-02-24 03:11:46,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:11:46,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [357571934] [2021-02-24 03:11:46,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:11:46,622 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:11:46,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 03:11:46,682 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 03:11:46,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 03:11:46,802 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 03:11:47,089 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-24 03:11:47,089 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-24 03:11:47,090 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-24 03:11:47,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 03:11:47 BoogieIcfgContainer [2021-02-24 03:11:47,116 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 03:11:47,117 INFO L168 Benchmark]: Toolchain (without parser) took 48948.89 ms. Allocated memory was 152.0 MB in the beginning and 1.2 GB in the end (delta: 1.0 GB). Free memory was 127.2 MB in the beginning and 1.1 GB in the end (delta: -954.4 MB). Peak memory consumption was 588.9 MB. Max. memory is 8.0 GB. [2021-02-24 03:11:47,117 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 152.0 MB. Free memory is still 125.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 03:11:47,117 INFO L168 Benchmark]: CACSL2BoogieTranslator took 653.75 ms. Allocated memory is still 152.0 MB. Free memory was 126.1 MB in the beginning and 104.0 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2021-02-24 03:11:47,118 INFO L168 Benchmark]: Boogie Preprocessor took 133.85 ms. Allocated memory is still 152.0 MB. Free memory was 104.0 MB in the beginning and 134.0 MB in the end (delta: -30.0 MB). Peak memory consumption was 9.3 MB. Max. memory is 8.0 GB. [2021-02-24 03:11:47,118 INFO L168 Benchmark]: RCFGBuilder took 1825.89 ms. Allocated memory was 152.0 MB in the beginning and 197.1 MB in the end (delta: 45.1 MB). Free memory was 134.0 MB in the beginning and 147.0 MB in the end (delta: -13.0 MB). Peak memory consumption was 82.4 MB. Max. memory is 8.0 GB. [2021-02-24 03:11:47,118 INFO L168 Benchmark]: TraceAbstraction took 46309.31 ms. Allocated memory was 197.1 MB in the beginning and 1.2 GB in the end (delta: 963.6 MB). Free memory was 147.0 MB in the beginning and 1.1 GB in the end (delta: -934.6 MB). Peak memory consumption was 563.2 MB. Max. memory is 8.0 GB. [2021-02-24 03:11:47,120 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 152.0 MB. Free memory is still 125.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 653.75 ms. Allocated memory is still 152.0 MB. Free memory was 126.1 MB in the beginning and 104.0 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 133.85 ms. Allocated memory is still 152.0 MB. Free memory was 104.0 MB in the beginning and 134.0 MB in the end (delta: -30.0 MB). Peak memory consumption was 9.3 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1825.89 ms. Allocated memory was 152.0 MB in the beginning and 197.1 MB in the end (delta: 45.1 MB). Free memory was 134.0 MB in the beginning and 147.0 MB in the end (delta: -13.0 MB). Peak memory consumption was 82.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 46309.31 ms. Allocated memory was 197.1 MB in the beginning and 1.2 GB in the end (delta: 963.6 MB). Free memory was 147.0 MB in the beginning and 1.1 GB in the end (delta: -934.6 MB). Peak memory consumption was 563.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 808]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L211] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L492] int pumpRunning = 0; [L493] int systemActive = 1; [L813] int cleanupTimeShifts = 4; [L910] int waterLevel = 1; [L911] int methaneLevelCritical = 0; [L886] int retValue_acc ; [L887] int tmp ; [L891] FCALL select_helpers() [L892] FCALL select_features() [L893] CALL, EXPR valid_product() [L768] int retValue_acc ; [L771] retValue_acc = 1 [L772] return (retValue_acc); [L893] RET, EXPR valid_product() [L893] tmp = valid_product() [L895] COND TRUE \read(tmp) [L897] FCALL setup() [L898] CALL runTest() [L880] CALL test() [L415] int splverifierCounter ; [L416] int tmp ; [L417] int tmp___0 ; [L418] int tmp___1 ; [L419] int tmp___2 ; [L422] splverifierCounter = 0 [L424] COND TRUE 1 [L426] COND TRUE splverifierCounter < 4 [L432] tmp = __VERIFIER_nondet_int() [L434] COND TRUE \read(tmp) [L436] CALL waterRise() [L928] COND TRUE waterLevel < 2 [L929] waterLevel = waterLevel + 1 [L436] RET waterRise() [L442] tmp___0 = __VERIFIER_nondet_int() [L444] COND TRUE \read(tmp___0) [L446] CALL changeMethaneLevel() [L940] COND FALSE !(\read(methaneLevelCritical)) [L943] methaneLevelCritical = 1 [L446] RET changeMethaneLevel() [L452] tmp___2 = __VERIFIER_nondet_int() [L454] COND TRUE \read(tmp___2) [L456] CALL startSystem() [L734] systemActive = 1 [L456] RET startSystem() [L471] CALL timeShift() [L500] COND FALSE !(\read(pumpRunning)) [L507] COND TRUE \read(systemActive) [L509] CALL processEnvironment() [L581] int tmp ; [L584] COND FALSE !(\read(pumpRunning)) [L599] CALL processEnvironment__wrappee__lowWaterSensor() [L555] int tmp ; [L558] COND FALSE !(\read(pumpRunning)) [L573] CALL processEnvironment__wrappee__highWaterSensor() [L529] int tmp ; [L532] COND TRUE ! pumpRunning [L534] CALL, EXPR isHighWaterLevel() [L678] int retValue_acc ; [L679] int tmp ; [L680] int tmp___0 ; [L684] CALL, EXPR isHighWaterSensorDry() [L990] int retValue_acc ; [L993] COND FALSE !(waterLevel < 2) [L997] retValue_acc = 0 [L998] return (retValue_acc); [L684] RET, EXPR isHighWaterSensorDry() [L684] tmp = isHighWaterSensorDry() [L686] COND FALSE !(\read(tmp)) [L689] tmp___0 = 1 [L691] retValue_acc = tmp___0 [L692] return (retValue_acc); [L534] RET, EXPR isHighWaterLevel() [L534] tmp = isHighWaterLevel() [L536] COND TRUE \read(tmp) [L538] CALL activatePump() [L609] pumpRunning = 1 [L538] RET activatePump() [L573] RET processEnvironment__wrappee__highWaterSensor() [L599] RET processEnvironment__wrappee__lowWaterSensor() [L509] RET processEnvironment() [L515] CALL __utac_acc__Specification1_spec__1() [L779] int tmp ; [L780] int tmp___0 ; [L784] CALL, EXPR isMethaneLevelCritical() [L949] int retValue_acc ; [L952] retValue_acc = methaneLevelCritical [L953] return (retValue_acc); [L784] RET, EXPR isMethaneLevelCritical() [L784] tmp = isMethaneLevelCritical() [L786] COND TRUE \read(tmp) [L788] CALL, EXPR isPumpRunning() [L633] int retValue_acc ; [L636] retValue_acc = pumpRunning [L637] return (retValue_acc); [L788] RET, EXPR isPumpRunning() [L788] tmp___0 = isPumpRunning() [L790] COND TRUE \read(tmp___0) [L792] CALL __automaton_fail() [L808] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 44 procedures, 668 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 46.2s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 36.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2289 SDtfs, 5091 SDslu, 4475 SDs, 0 SdLazy, 10225 SolverSat, 1770 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 17.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 342 GetRequests, 211 SyntacticMatches, 4 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 13.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2504occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 4.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 2720 StatesRemovedByMinimization, 8 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...