/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product30.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 16:55:40,808 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 16:55:40,822 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 16:55:40,865 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 16:55:40,867 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 16:55:40,870 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 16:55:40,872 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 16:55:40,875 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 16:55:40,877 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 16:55:40,879 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 16:55:40,880 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 16:55:40,882 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 16:55:40,882 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 16:55:40,884 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 16:55:40,887 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 16:55:40,889 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 16:55:40,909 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 16:55:40,915 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 16:55:40,917 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 16:55:40,920 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 16:55:40,923 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 16:55:40,925 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 16:55:40,926 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 16:55:40,927 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 16:55:40,931 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 16:55:40,932 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 16:55:40,932 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 16:55:40,933 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 16:55:40,934 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 16:55:40,935 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 16:55:40,936 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 16:55:40,938 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 16:55:40,940 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 16:55:40,940 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 16:55:40,942 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 16:55:40,942 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 16:55:40,943 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 16:55:40,943 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 16:55:40,944 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 16:55:40,946 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 16:55:40,948 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 16:55:40,949 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 16:55:40,972 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 16:55:40,973 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 16:55:40,979 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 16:55:40,981 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 16:55:40,983 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 16:55:40,984 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 16:55:40,984 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 16:55:40,984 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 16:55:40,984 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 16:55:40,985 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 16:55:40,985 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 16:55:40,985 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 16:55:40,985 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 16:55:40,985 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 16:55:40,986 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 16:55:40,986 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 16:55:40,986 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 16:55:40,986 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 16:55:40,987 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 16:55:40,989 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 16:55:40,990 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 16:55:40,990 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 16:55:40,990 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 16:55:41,509 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 16:55:41,546 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 16:55:41,552 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 16:55:41,553 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 16:55:41,554 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 16:55:41,555 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product30.cil.c [2021-02-23 16:55:41,674 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f77260b2/a6697bdba4bc4068a829cab958bade10/FLAGa9f7884bd [2021-02-23 16:55:42,593 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 16:55:42,595 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product30.cil.c [2021-02-23 16:55:42,617 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f77260b2/a6697bdba4bc4068a829cab958bade10/FLAGa9f7884bd [2021-02-23 16:55:42,793 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f77260b2/a6697bdba4bc4068a829cab958bade10 [2021-02-23 16:55:42,798 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 16:55:42,816 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 16:55:42,823 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 16:55:42,823 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 16:55:42,828 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 16:55:42,830 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:55:42" (1/1) ... [2021-02-23 16:55:42,834 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@420374cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:55:42, skipping insertion in model container [2021-02-23 16:55:42,834 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:55:42" (1/1) ... [2021-02-23 16:55:42,846 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 16:55:42,935 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 16:55:43,291 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_spec4_product30.cil.c[17899,17912] [2021-02-23 16:55:43,295 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:55:43,322 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 16:55:43,516 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_spec4_product30.cil.c[17899,17912] [2021-02-23 16:55:43,517 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:55:43,572 INFO L208 MainTranslator]: Completed translation [2021-02-23 16:55:43,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:55:43 WrapperNode [2021-02-23 16:55:43,573 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 16:55:43,575 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 16:55:43,575 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 16:55:43,575 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 16:55:43,591 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:55:43" (1/1) ... [2021-02-23 16:55:43,592 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:55:43" (1/1) ... [2021-02-23 16:55:43,615 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:55:43" (1/1) ... [2021-02-23 16:55:43,616 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:55:43" (1/1) ... [2021-02-23 16:55:43,737 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:55:43" (1/1) ... [2021-02-23 16:55:43,763 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:55:43" (1/1) ... [2021-02-23 16:55:43,775 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:55:43" (1/1) ... [2021-02-23 16:55:43,794 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 16:55:43,796 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 16:55:43,797 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 16:55:43,797 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 16:55:43,802 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:55:43" (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 [2021-02-23 16:55:43,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 16:55:43,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 16:55:43,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-23 16:55:43,953 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 16:55:43,953 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-23 16:55:43,953 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-23 16:55:43,953 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-23 16:55:43,953 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-23 16:55:43,954 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-23 16:55:43,954 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-23 16:55:43,957 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2021-02-23 16:55:43,957 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2021-02-23 16:55:43,957 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-23 16:55:43,957 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-23 16:55:43,958 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2021-02-23 16:55:43,958 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-23 16:55:43,958 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2021-02-23 16:55:43,958 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-23 16:55:43,959 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-23 16:55:43,960 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-23 16:55:43,963 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-23 16:55:43,964 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-23 16:55:43,964 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2021-02-23 16:55:43,966 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2021-02-23 16:55:43,966 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-23 16:55:43,966 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-23 16:55:43,967 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-23 16:55:43,967 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-23 16:55:43,967 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-23 16:55:43,967 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-23 16:55:43,967 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-23 16:55:43,968 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-23 16:55:43,968 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-23 16:55:43,968 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-23 16:55:43,968 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-23 16:55:43,968 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 16:55:43,969 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-23 16:55:43,969 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-23 16:55:43,969 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-23 16:55:43,969 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-23 16:55:43,969 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-23 16:55:43,969 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 16:55:43,970 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 16:55:43,970 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 16:55:43,970 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 16:55:43,970 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 16:55:43,970 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-23 16:55:43,970 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-23 16:55:43,970 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-23 16:55:43,971 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-23 16:55:43,971 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-23 16:55:43,971 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-23 16:55:43,971 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-23 16:55:43,971 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2021-02-23 16:55:43,971 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-23 16:55:43,972 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-23 16:55:43,972 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2021-02-23 16:55:43,972 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-23 16:55:43,972 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-23 16:55:43,972 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-23 16:55:43,972 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-23 16:55:43,972 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2021-02-23 16:55:43,973 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-23 16:55:43,973 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-23 16:55:43,973 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2021-02-23 16:55:43,973 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2021-02-23 16:55:43,973 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-23 16:55:43,973 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2021-02-23 16:55:43,974 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-23 16:55:43,975 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-23 16:55:43,975 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 16:55:43,975 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-23 16:55:43,975 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-23 16:55:43,976 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 16:55:43,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-23 16:55:43,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 16:55:43,976 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-23 16:55:43,976 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-23 16:55:43,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 16:55:43,977 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-23 16:55:43,977 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-23 16:55:43,977 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 16:55:43,978 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-23 16:55:43,978 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-23 16:55:43,980 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-23 16:55:43,981 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-23 16:55:43,981 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-23 16:55:43,981 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-23 16:55:43,981 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-23 16:55:43,982 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-23 16:55:43,983 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-23 16:55:43,983 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 16:55:43,984 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-23 16:55:43,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 16:55:43,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 16:55:43,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 16:55:45,761 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 16:55:45,762 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-23 16:55:45,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:55:45 BoogieIcfgContainer [2021-02-23 16:55:45,768 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 16:55:45,773 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 16:55:45,773 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 16:55:45,777 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 16:55:45,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 04:55:42" (1/3) ... [2021-02-23 16:55:45,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@335819b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:55:45, skipping insertion in model container [2021-02-23 16:55:45,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:55:43" (2/3) ... [2021-02-23 16:55:45,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@335819b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:55:45, skipping insertion in model container [2021-02-23 16:55:45,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:55:45" (3/3) ... [2021-02-23 16:55:45,782 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product30.cil.c [2021-02-23 16:55:45,792 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 16:55:45,801 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 16:55:45,821 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 16:55:45,849 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 16:55:45,850 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 16:55:45,850 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 16:55:45,850 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 16:55:45,850 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 16:55:45,850 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 16:55:45,851 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 16:55:45,851 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 16:55:45,882 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states. [2021-02-23 16:55:45,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-23 16:55:45,913 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:55:45,915 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] [2021-02-23 16:55:45,916 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:55:45,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:55:45,926 INFO L82 PathProgramCache]: Analyzing trace with hash -25854172, now seen corresponding path program 1 times [2021-02-23 16:55:45,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:55:45,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [176841240] [2021-02-23 16:55:45,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:55:46,055 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:55:46,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:55:46,590 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:46,592 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:55:46,594 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:46,595 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:55:47,042 WARN L202 SmtUtils]: Spent 421.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:55:47,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:55:47,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:55:47,210 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:47,212 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:55:47,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:55:47,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:55:47,248 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:47,252 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:55:47,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:55:47,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:55:47,263 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:47,270 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:55:47,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:55:47,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:55:47,283 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:47,285 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:55:47,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:55:47,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:55:47,288 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:47,289 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:55:47,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-23 16:55:47,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:55:47,294 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:47,295 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:55:47,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-23 16:55:47,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:55:47,306 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:47,308 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:55:47,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:55:47,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [176841240] [2021-02-23 16:55:47,374 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:55:47,374 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 16:55:47,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261152797] [2021-02-23 16:55:47,385 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 16:55:47,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:55:47,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 16:55:47,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 16:55:47,410 INFO L87 Difference]: Start difference. First operand 320 states. Second operand 3 states. [2021-02-23 16:55:49,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:55:49,230 INFO L93 Difference]: Finished difference Result 480 states and 570 transitions. [2021-02-23 16:55:49,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 16:55:49,233 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-23 16:55:49,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:55:49,249 INFO L225 Difference]: With dead ends: 480 [2021-02-23 16:55:49,250 INFO L226 Difference]: Without dead ends: 300 [2021-02-23 16:55:49,255 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 16:55:49,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2021-02-23 16:55:49,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 258. [2021-02-23 16:55:49,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2021-02-23 16:55:49,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 279 transitions. [2021-02-23 16:55:49,463 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 279 transitions. Word has length 147 [2021-02-23 16:55:49,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:55:49,464 INFO L480 AbstractCegarLoop]: Abstraction has 258 states and 279 transitions. [2021-02-23 16:55:49,464 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 16:55:49,464 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 279 transitions. [2021-02-23 16:55:49,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-23 16:55:49,470 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:55:49,470 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] [2021-02-23 16:55:49,470 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 16:55:49,471 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:55:49,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:55:49,472 INFO L82 PathProgramCache]: Analyzing trace with hash -1378358268, now seen corresponding path program 1 times [2021-02-23 16:55:49,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:55:49,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1054729196] [2021-02-23 16:55:49,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:55:49,477 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:55:49,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:55:49,573 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:49,574 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:55:49,575 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:49,576 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:55:49,580 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:49,581 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:55:49,956 WARN L202 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:55:49,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:55:49,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:55:50,004 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:50,005 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:55:50,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:55:50,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:55:50,013 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:50,014 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:55:50,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:55:50,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:55:50,018 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:50,019 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:55:50,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:55:50,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:55:50,024 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:50,025 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:55:50,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:55:50,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:55:50,028 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:50,029 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:55:50,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-23 16:55:50,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:55:50,032 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:50,033 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:55:50,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-23 16:55:50,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:55:50,036 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:50,037 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:55:50,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:55:50,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1054729196] [2021-02-23 16:55:50,092 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:55:50,092 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 16:55:50,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104574448] [2021-02-23 16:55:50,094 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 16:55:50,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:55:50,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 16:55:50,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 16:55:50,095 INFO L87 Difference]: Start difference. First operand 258 states and 279 transitions. Second operand 4 states. [2021-02-23 16:55:50,941 WARN L202 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:55:52,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:55:52,125 INFO L93 Difference]: Finished difference Result 392 states and 440 transitions. [2021-02-23 16:55:52,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 16:55:52,126 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-23 16:55:52,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:55:52,132 INFO L225 Difference]: With dead ends: 392 [2021-02-23 16:55:52,132 INFO L226 Difference]: Without dead ends: 283 [2021-02-23 16:55:52,135 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 16:55:52,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2021-02-23 16:55:52,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 248. [2021-02-23 16:55:52,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2021-02-23 16:55:52,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 266 transitions. [2021-02-23 16:55:52,232 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 266 transitions. Word has length 148 [2021-02-23 16:55:52,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:55:52,232 INFO L480 AbstractCegarLoop]: Abstraction has 248 states and 266 transitions. [2021-02-23 16:55:52,233 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 16:55:52,233 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 266 transitions. [2021-02-23 16:55:52,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-02-23 16:55:52,235 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:55:52,236 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] [2021-02-23 16:55:52,236 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 16:55:52,236 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:55:52,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:55:52,237 INFO L82 PathProgramCache]: Analyzing trace with hash -47677773, now seen corresponding path program 1 times [2021-02-23 16:55:52,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:55:52,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2106439970] [2021-02-23 16:55:52,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:55:52,241 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:55:52,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:55:52,378 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:52,379 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:55:52,380 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:52,381 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:55:52,385 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:52,386 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:55:52,390 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:52,391 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:55:52,392 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:52,392 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:55:52,399 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:52,399 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:55:52,884 WARN L202 SmtUtils]: Spent 462.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:55:52,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:55:52,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:55:52,954 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:52,955 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:55:52,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:55:52,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:55:52,966 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:52,967 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:55:52,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:55:52,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:55:52,970 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:52,971 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:55:52,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:55:52,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:55:53,001 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:53,002 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:55:53,012 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:53,013 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:55:53,033 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:53,034 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:55:53,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:55:53,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:55:53,052 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:53,053 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:55:53,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-23 16:55:53,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:55:53,072 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:53,072 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:55:53,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-02-23 16:55:53,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:55:53,094 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:53,095 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:55:53,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-23 16:55:53,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:55:53,099 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:53,100 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:55:53,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:55:53,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2106439970] [2021-02-23 16:55:53,146 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:55:53,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-23 16:55:53,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951197804] [2021-02-23 16:55:53,149 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-23 16:55:53,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:55:53,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-23 16:55:53,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-23 16:55:53,151 INFO L87 Difference]: Start difference. First operand 248 states and 266 transitions. Second operand 10 states. [2021-02-23 16:55:53,848 WARN L202 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:55:54,348 WARN L202 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:55:54,786 WARN L202 SmtUtils]: Spent 416.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-23 16:55:55,228 WARN L202 SmtUtils]: Spent 388.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:55:55,658 WARN L202 SmtUtils]: Spent 397.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:55:56,063 WARN L202 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:55:58,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:55:58,022 INFO L93 Difference]: Finished difference Result 438 states and 502 transitions. [2021-02-23 16:55:58,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-23 16:55:58,023 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 161 [2021-02-23 16:55:58,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:55:58,027 INFO L225 Difference]: With dead ends: 438 [2021-02-23 16:55:58,027 INFO L226 Difference]: Without dead ends: 305 [2021-02-23 16:55:58,029 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2021-02-23 16:55:58,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2021-02-23 16:55:58,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 248. [2021-02-23 16:55:58,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2021-02-23 16:55:58,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 265 transitions. [2021-02-23 16:55:58,125 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 265 transitions. Word has length 161 [2021-02-23 16:55:58,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:55:58,125 INFO L480 AbstractCegarLoop]: Abstraction has 248 states and 265 transitions. [2021-02-23 16:55:58,126 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-23 16:55:58,126 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 265 transitions. [2021-02-23 16:55:58,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-02-23 16:55:58,128 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:55:58,129 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] [2021-02-23 16:55:58,129 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 16:55:58,129 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:55:58,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:55:58,130 INFO L82 PathProgramCache]: Analyzing trace with hash 1462892453, now seen corresponding path program 1 times [2021-02-23 16:55:58,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:55:58,130 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1053042377] [2021-02-23 16:55:58,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:55:58,134 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:55:58,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:55:58,217 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:58,218 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:55:58,222 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:58,223 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:55:58,224 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:58,224 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:55:58,229 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:58,229 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:55:58,234 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:58,235 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:55:58,241 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:58,242 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:55:58,243 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:58,244 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:55:58,244 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:58,245 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:55:58,246 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:58,247 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:55:58,253 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:58,254 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:55:58,262 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:58,263 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:55:58,586 WARN L202 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:55:58,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:55:58,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:55:58,643 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:58,643 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:55:58,644 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:58,645 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:55:58,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:55:58,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:55:58,655 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:58,656 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:55:58,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:55:58,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:55:58,659 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:58,660 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:55:58,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:55:58,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:55:58,668 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:58,669 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:55:58,670 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:58,671 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:55:58,693 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-23 16:55:58,694 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-23 16:55:58,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:55:58,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:55:58,718 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:58,719 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:55:58,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-23 16:55:58,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:55:58,738 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:58,738 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:55:58,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-23 16:55:58,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:55:58,763 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:58,764 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:55:58,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:55:58,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:55:58,773 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:58,774 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:55:58,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:55:58,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:55:58,778 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:58,779 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:55:58,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-02-23 16:55:58,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:55:58,785 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:58,786 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:55:58,787 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:58,787 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:55:58,822 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:58,822 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:55:58,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-02-23 16:55:58,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:55:58,843 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:55:58,844 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:55:58,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:55:58,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1053042377] [2021-02-23 16:55:58,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:55:58,905 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-23 16:55:58,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066653752] [2021-02-23 16:55:58,906 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-23 16:55:58,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:55:58,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-23 16:55:58,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-02-23 16:55:58,907 INFO L87 Difference]: Start difference. First operand 248 states and 265 transitions. Second operand 15 states. [2021-02-23 16:55:59,679 WARN L202 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:56:00,188 WARN L202 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:56:00,590 WARN L202 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:56:01,014 WARN L202 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:56:01,487 WARN L202 SmtUtils]: Spent 420.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:56:01,853 WARN L202 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:56:02,713 WARN L202 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:56:04,437 WARN L202 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:56:04,863 WARN L202 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:56:05,481 WARN L202 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:56:05,961 WARN L202 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:56:06,347 WARN L202 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:56:06,762 WARN L202 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 16:56:07,176 WARN L202 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:56:07,574 WARN L202 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:56:07,989 WARN L202 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:56:08,513 WARN L202 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:56:09,053 WARN L202 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 16:56:09,492 WARN L202 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:56:10,065 WARN L202 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:56:12,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:56:12,525 INFO L93 Difference]: Finished difference Result 868 states and 1087 transitions. [2021-02-23 16:56:12,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-02-23 16:56:12,525 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 174 [2021-02-23 16:56:12,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:56:12,533 INFO L225 Difference]: With dead ends: 868 [2021-02-23 16:56:12,534 INFO L226 Difference]: Without dead ends: 735 [2021-02-23 16:56:12,536 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=386, Invalid=1336, Unknown=0, NotChecked=0, Total=1722 [2021-02-23 16:56:12,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2021-02-23 16:56:12,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 492. [2021-02-23 16:56:12,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 492 states. [2021-02-23 16:56:12,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 546 transitions. [2021-02-23 16:56:12,786 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 546 transitions. Word has length 174 [2021-02-23 16:56:12,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:56:12,786 INFO L480 AbstractCegarLoop]: Abstraction has 492 states and 546 transitions. [2021-02-23 16:56:12,787 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-02-23 16:56:12,787 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 546 transitions. [2021-02-23 16:56:12,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-02-23 16:56:12,791 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:56:12,791 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] [2021-02-23 16:56:12,791 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 16:56:12,792 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:56:12,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:56:12,793 INFO L82 PathProgramCache]: Analyzing trace with hash 481774433, now seen corresponding path program 1 times [2021-02-23 16:56:12,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:56:12,793 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1820225513] [2021-02-23 16:56:12,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:56:12,796 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:56:12,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:12,869 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:12,870 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:56:12,873 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:12,874 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:56:12,875 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:12,875 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:56:12,876 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:12,877 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:56:12,877 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:12,878 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:56:12,878 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:12,879 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:13,187 WARN L202 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:56:13,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:56:13,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:13,231 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:13,232 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:13,233 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:13,233 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:56:13,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:56:13,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:13,243 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:13,244 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:13,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:56:13,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:13,247 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:13,248 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:13,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:56:13,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:13,251 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:13,252 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:13,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:56:13,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:13,256 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:13,256 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:13,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-23 16:56:13,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:13,267 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:13,267 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:13,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-23 16:56:13,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:13,283 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:13,284 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:13,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-02-23 16:56:13,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:13,296 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:13,296 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:13,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:56:13,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:13,299 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:13,299 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:13,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:56:13,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:13,302 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:13,303 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:13,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-02-23 16:56:13,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:13,305 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:13,306 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:13,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-02-23 16:56:13,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:56:13,309 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:13,310 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:13,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:56:13,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1820225513] [2021-02-23 16:56:13,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:56:13,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-23 16:56:13,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909008698] [2021-02-23 16:56:13,360 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-23 16:56:13,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:56:13,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-23 16:56:13,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-02-23 16:56:13,361 INFO L87 Difference]: Start difference. First operand 492 states and 546 transitions. Second operand 7 states. [2021-02-23 16:56:14,063 WARN L202 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:56:15,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:56:15,133 INFO L93 Difference]: Finished difference Result 787 states and 921 transitions. [2021-02-23 16:56:15,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-23 16:56:15,134 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 179 [2021-02-23 16:56:15,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:56:15,137 INFO L225 Difference]: With dead ends: 787 [2021-02-23 16:56:15,138 INFO L226 Difference]: Without dead ends: 410 [2021-02-23 16:56:15,139 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-02-23 16:56:15,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2021-02-23 16:56:15,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 323. [2021-02-23 16:56:15,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2021-02-23 16:56:15,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 340 transitions. [2021-02-23 16:56:15,276 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 340 transitions. Word has length 179 [2021-02-23 16:56:15,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:56:15,277 INFO L480 AbstractCegarLoop]: Abstraction has 323 states and 340 transitions. [2021-02-23 16:56:15,277 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-23 16:56:15,277 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 340 transitions. [2021-02-23 16:56:15,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2021-02-23 16:56:15,281 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:56:15,282 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:56:15,282 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 16:56:15,282 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:56:15,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:56:15,283 INFO L82 PathProgramCache]: Analyzing trace with hash -684674424, now seen corresponding path program 1 times [2021-02-23 16:56:15,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:56:15,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1274663450] [2021-02-23 16:56:15,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:56:15,865 WARN L202 SmtUtils]: Spent 471.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 102 [2021-02-23 16:56:15,876 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:15,881 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 252 [2021-02-23 16:56:15,897 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:15,898 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:56:16,336 WARN L202 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 101 [2021-02-23 16:56:16,351 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:56:16,367 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 247