/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/forester-heap/sll-01-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 20:41:49,756 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 20:41:49,759 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 20:41:49,796 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 20:41:49,797 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 20:41:49,798 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 20:41:49,800 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 20:41:49,803 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 20:41:49,805 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 20:41:49,806 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 20:41:49,808 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 20:41:49,809 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 20:41:49,810 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 20:41:49,812 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 20:41:49,816 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 20:41:49,818 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 20:41:49,832 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 20:41:49,833 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 20:41:49,840 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 20:41:49,842 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 20:41:49,843 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 20:41:49,848 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 20:41:49,852 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 20:41:49,854 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 20:41:49,861 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 20:41:49,862 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 20:41:49,862 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 20:41:49,863 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 20:41:49,865 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 20:41:49,866 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 20:41:49,867 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 20:41:49,868 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 20:41:49,874 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 20:41:49,878 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 20:41:49,880 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 20:41:49,880 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 20:41:49,881 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 20:41:49,881 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 20:41:49,881 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 20:41:49,883 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 20:41:49,884 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 20:41:49,885 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 20:41:49,901 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 20:41:49,901 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 20:41:49,906 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 20:41:49,907 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 20:41:49,907 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 20:41:49,907 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 20:41:49,907 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 20:41:49,908 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 20:41:49,908 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 20:41:49,908 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 20:41:49,909 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 20:41:49,910 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 20:41:49,910 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 20:41:49,910 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 20:41:49,910 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 20:41:49,911 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 20:41:49,911 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 20:41:49,911 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 20:41:49,911 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 20:41:49,912 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 20:41:49,912 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 20:41:49,912 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 20:41:49,912 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 20:41:50,345 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 20:41:50,379 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 20:41:50,382 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 20:41:50,384 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 20:41:50,385 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 20:41:50,386 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-01-2.i [2021-02-21 20:41:50,470 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/825faeedd/61e683a345554226ae0aa11c5be8fd93/FLAGe57769f64 [2021-02-21 20:41:51,242 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 20:41:51,243 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-01-2.i [2021-02-21 20:41:51,261 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/825faeedd/61e683a345554226ae0aa11c5be8fd93/FLAGe57769f64 [2021-02-21 20:41:51,541 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/825faeedd/61e683a345554226ae0aa11c5be8fd93 [2021-02-21 20:41:51,544 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 20:41:51,559 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 20:41:51,563 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 20:41:51,563 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 20:41:51,567 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 20:41:51,568 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 08:41:51" (1/1) ... [2021-02-21 20:41:51,570 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61697452 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:41:51, skipping insertion in model container [2021-02-21 20:41:51,570 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 08:41:51" (1/1) ... [2021-02-21 20:41:51,578 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 20:41:51,649 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 20:41:51,928 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-01-2.i[22034,22047] [2021-02-21 20:41:51,936 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-01-2.i[22307,22320] [2021-02-21 20:41:51,939 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-01-2.i[22516,22529] [2021-02-21 20:41:51,940 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-01-2.i[22586,22599] [2021-02-21 20:41:51,943 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-01-2.i[22853,22866] [2021-02-21 20:41:51,945 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-01-2.i[22961,22974] [2021-02-21 20:41:51,948 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-01-2.i[23192,23205] [2021-02-21 20:41:51,949 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-01-2.i[23272,23285] [2021-02-21 20:41:51,950 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-01-2.i[23351,23364] [2021-02-21 20:41:51,952 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-01-2.i[23484,23497] [2021-02-21 20:41:51,954 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-01-2.i[23662,23675] [2021-02-21 20:41:51,956 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-01-2.i[23740,23753] [2021-02-21 20:41:51,957 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-01-2.i[23817,23830] [2021-02-21 20:41:51,962 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 20:41:51,972 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 20:41:52,052 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-01-2.i[22034,22047] [2021-02-21 20:41:52,058 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-01-2.i[22307,22320] [2021-02-21 20:41:52,064 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-01-2.i[22516,22529] [2021-02-21 20:41:52,067 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-01-2.i[22586,22599] [2021-02-21 20:41:52,076 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-01-2.i[22853,22866] [2021-02-21 20:41:52,080 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-01-2.i[22961,22974] [2021-02-21 20:41:52,083 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-01-2.i[23192,23205] [2021-02-21 20:41:52,085 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-01-2.i[23272,23285] [2021-02-21 20:41:52,086 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-01-2.i[23351,23364] [2021-02-21 20:41:52,087 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-01-2.i[23484,23497] [2021-02-21 20:41:52,090 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-01-2.i[23662,23675] [2021-02-21 20:41:52,091 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-01-2.i[23740,23753] [2021-02-21 20:41:52,092 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-01-2.i[23817,23830] [2021-02-21 20:41:52,095 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 20:41:52,216 INFO L208 MainTranslator]: Completed translation [2021-02-21 20:41:52,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:41:52 WrapperNode [2021-02-21 20:41:52,217 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 20:41:52,221 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 20:41:52,222 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 20:41:52,222 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 20:41:52,273 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:41:52" (1/1) ... [2021-02-21 20:41:52,273 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:41:52" (1/1) ... [2021-02-21 20:41:52,294 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:41:52" (1/1) ... [2021-02-21 20:41:52,294 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:41:52" (1/1) ... [2021-02-21 20:41:52,317 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:41:52" (1/1) ... [2021-02-21 20:41:52,328 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:41:52" (1/1) ... [2021-02-21 20:41:52,336 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:41:52" (1/1) ... [2021-02-21 20:41:52,351 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 20:41:52,352 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 20:41:52,353 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 20:41:52,353 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 20:41:52,354 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:41:52" (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 [2021-02-21 20:41:52,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 20:41:52,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 20:41:52,489 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 20:41:52,489 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 20:41:52,489 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-02-21 20:41:52,489 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-02-21 20:41:52,490 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-02-21 20:41:52,490 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-02-21 20:41:52,490 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-02-21 20:41:52,490 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-02-21 20:41:52,490 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-02-21 20:41:52,490 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-02-21 20:41:52,491 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-02-21 20:41:52,491 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-02-21 20:41:52,491 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-02-21 20:41:52,492 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-02-21 20:41:52,492 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-02-21 20:41:52,492 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-02-21 20:41:52,492 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-02-21 20:41:52,494 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-02-21 20:41:52,494 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-02-21 20:41:52,495 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-02-21 20:41:52,495 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-02-21 20:41:52,495 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-02-21 20:41:52,495 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-02-21 20:41:52,495 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-02-21 20:41:52,495 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-02-21 20:41:52,496 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-02-21 20:41:52,496 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-02-21 20:41:52,496 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-02-21 20:41:52,496 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-02-21 20:41:52,496 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-02-21 20:41:52,496 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-02-21 20:41:52,496 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-02-21 20:41:52,497 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-02-21 20:41:52,498 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-02-21 20:41:52,498 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-02-21 20:41:52,498 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-02-21 20:41:52,498 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-02-21 20:41:52,498 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-02-21 20:41:52,499 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-02-21 20:41:52,499 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-02-21 20:41:52,499 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-02-21 20:41:52,499 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-02-21 20:41:52,499 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-02-21 20:41:52,499 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-02-21 20:41:52,499 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-02-21 20:41:52,500 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-02-21 20:41:52,500 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-02-21 20:41:52,501 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-02-21 20:41:52,501 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-02-21 20:41:52,501 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-02-21 20:41:52,501 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-02-21 20:41:52,501 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-02-21 20:41:52,503 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 20:41:52,503 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-02-21 20:41:52,503 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-02-21 20:41:52,503 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 20:41:52,504 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-02-21 20:41:52,504 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-02-21 20:41:52,505 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-02-21 20:41:52,506 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-02-21 20:41:52,506 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-02-21 20:41:52,506 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 20:41:52,507 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-02-21 20:41:52,507 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-02-21 20:41:52,507 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-02-21 20:41:52,508 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-02-21 20:41:52,508 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-02-21 20:41:52,508 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-02-21 20:41:52,509 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-02-21 20:41:52,509 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-02-21 20:41:52,509 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-02-21 20:41:52,509 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-02-21 20:41:52,509 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-02-21 20:41:52,510 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-02-21 20:41:52,510 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-02-21 20:41:52,510 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-02-21 20:41:52,510 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-02-21 20:41:52,510 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-02-21 20:41:52,510 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-02-21 20:41:52,511 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-02-21 20:41:52,511 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-02-21 20:41:52,511 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-02-21 20:41:52,511 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-02-21 20:41:52,511 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-02-21 20:41:52,511 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-02-21 20:41:52,511 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-02-21 20:41:52,512 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-02-21 20:41:52,512 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-02-21 20:41:52,512 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-02-21 20:41:52,512 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-02-21 20:41:52,512 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-02-21 20:41:52,512 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-02-21 20:41:52,513 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-02-21 20:41:52,513 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-02-21 20:41:52,513 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-02-21 20:41:52,513 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-02-21 20:41:52,513 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-02-21 20:41:52,514 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-02-21 20:41:52,514 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-02-21 20:41:52,515 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-02-21 20:41:52,515 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-02-21 20:41:52,515 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-02-21 20:41:52,516 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-02-21 20:41:52,516 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-02-21 20:41:52,516 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-02-21 20:41:52,516 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 20:41:52,517 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 20:41:52,517 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-21 20:41:52,517 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-21 20:41:52,517 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 20:41:52,518 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 20:41:52,518 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 20:41:52,518 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 20:41:52,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 20:41:52,518 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 20:41:52,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 20:41:52,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 20:41:52,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 20:41:52,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 20:41:52,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 20:41:52,524 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 20:41:53,662 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 20:41:53,663 INFO L299 CfgBuilder]: Removed 30 assume(true) statements. [2021-02-21 20:41:53,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 08:41:53 BoogieIcfgContainer [2021-02-21 20:41:53,665 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 20:41:53,667 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 20:41:53,667 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 20:41:53,671 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 20:41:53,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 08:41:51" (1/3) ... [2021-02-21 20:41:53,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@439cbc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 08:41:53, skipping insertion in model container [2021-02-21 20:41:53,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:41:52" (2/3) ... [2021-02-21 20:41:53,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@439cbc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 08:41:53, skipping insertion in model container [2021-02-21 20:41:53,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 08:41:53" (3/3) ... [2021-02-21 20:41:53,675 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-01-2.i [2021-02-21 20:41:53,682 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 20:41:53,687 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2021-02-21 20:41:53,706 INFO L253 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2021-02-21 20:41:53,732 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 20:41:53,732 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 20:41:53,732 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 20:41:53,732 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 20:41:53,732 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 20:41:53,733 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 20:41:53,733 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 20:41:53,733 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 20:41:53,755 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states. [2021-02-21 20:41:53,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-02-21 20:41:53,765 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:41:53,766 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 20:41:53,766 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:41:53,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:41:53,773 INFO L82 PathProgramCache]: Analyzing trace with hash 686903667, now seen corresponding path program 1 times [2021-02-21 20:41:53,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:41:53,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [89522326] [2021-02-21 20:41:53,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:41:53,897 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:41:54,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:41:54,130 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:54,133 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:54,134 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:54,137 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 20:41:54,152 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:54,156 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 20:41:54,172 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:54,173 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:54,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:41:54,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:41:54,260 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:54,261 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:54,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:41:54,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [89522326] [2021-02-21 20:41:54,280 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:41:54,281 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-21 20:41:54,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337704892] [2021-02-21 20:41:54,293 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-21 20:41:54,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:41:54,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-21 20:41:54,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-21 20:41:54,314 INFO L87 Difference]: Start difference. First operand 188 states. Second operand 5 states. [2021-02-21 20:41:55,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:41:55,008 INFO L93 Difference]: Finished difference Result 377 states and 495 transitions. [2021-02-21 20:41:55,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 20:41:55,010 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2021-02-21 20:41:55,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:41:55,023 INFO L225 Difference]: With dead ends: 377 [2021-02-21 20:41:55,023 INFO L226 Difference]: Without dead ends: 198 [2021-02-21 20:41:55,028 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-21 20:41:55,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-02-21 20:41:55,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 168. [2021-02-21 20:41:55,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2021-02-21 20:41:55,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 178 transitions. [2021-02-21 20:41:55,099 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 178 transitions. Word has length 16 [2021-02-21 20:41:55,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:41:55,099 INFO L480 AbstractCegarLoop]: Abstraction has 168 states and 178 transitions. [2021-02-21 20:41:55,099 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-21 20:41:55,099 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 178 transitions. [2021-02-21 20:41:55,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-02-21 20:41:55,101 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:41:55,101 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 20:41:55,101 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 20:41:55,102 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:41:55,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:41:55,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1562484955, now seen corresponding path program 1 times [2021-02-21 20:41:55,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:41:55,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2146684950] [2021-02-21 20:41:55,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:41:55,109 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:41:55,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:41:55,172 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:55,173 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:55,174 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:55,175 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:55,179 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:55,180 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:55,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:41:55,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:41:55,244 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:55,245 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:55,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:41:55,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2146684950] [2021-02-21 20:41:55,251 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:41:55,251 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 20:41:55,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896173128] [2021-02-21 20:41:55,254 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 20:41:55,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:41:55,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 20:41:55,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 20:41:55,256 INFO L87 Difference]: Start difference. First operand 168 states and 178 transitions. Second operand 4 states. [2021-02-21 20:41:55,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:41:55,632 INFO L93 Difference]: Finished difference Result 174 states and 184 transitions. [2021-02-21 20:41:55,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 20:41:55,633 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2021-02-21 20:41:55,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:41:55,639 INFO L225 Difference]: With dead ends: 174 [2021-02-21 20:41:55,639 INFO L226 Difference]: Without dead ends: 169 [2021-02-21 20:41:55,641 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 20:41:55,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-02-21 20:41:55,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2021-02-21 20:41:55,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2021-02-21 20:41:55,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 179 transitions. [2021-02-21 20:41:55,685 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 179 transitions. Word has length 28 [2021-02-21 20:41:55,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:41:55,686 INFO L480 AbstractCegarLoop]: Abstraction has 169 states and 179 transitions. [2021-02-21 20:41:55,686 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 20:41:55,687 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 179 transitions. [2021-02-21 20:41:55,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-02-21 20:41:55,693 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:41:55,693 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] [2021-02-21 20:41:55,694 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 20:41:55,694 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:41:55,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:41:55,700 INFO L82 PathProgramCache]: Analyzing trace with hash 593562178, now seen corresponding path program 1 times [2021-02-21 20:41:55,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:41:55,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [242750168] [2021-02-21 20:41:55,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:41:55,712 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:41:55,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:41:55,772 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:55,772 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:55,780 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:55,781 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-21 20:41:55,790 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:55,791 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-21 20:41:55,803 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:55,804 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-21 20:41:55,814 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:55,815 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:41:55,825 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:55,825 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:55,834 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:55,834 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:55,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:41:55,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:41:55,882 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:55,882 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:55,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:41:55,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [242750168] [2021-02-21 20:41:55,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:41:55,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-21 20:41:55,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062841387] [2021-02-21 20:41:55,886 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-21 20:41:55,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:41:55,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-21 20:41:55,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-02-21 20:41:55,887 INFO L87 Difference]: Start difference. First operand 169 states and 179 transitions. Second operand 8 states. [2021-02-21 20:41:56,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:41:56,447 INFO L93 Difference]: Finished difference Result 263 states and 280 transitions. [2021-02-21 20:41:56,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-21 20:41:56,447 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2021-02-21 20:41:56,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:41:56,450 INFO L225 Difference]: With dead ends: 263 [2021-02-21 20:41:56,450 INFO L226 Difference]: Without dead ends: 258 [2021-02-21 20:41:56,451 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2021-02-21 20:41:56,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2021-02-21 20:41:56,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 163. [2021-02-21 20:41:56,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2021-02-21 20:41:56,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 173 transitions. [2021-02-21 20:41:56,472 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 173 transitions. Word has length 30 [2021-02-21 20:41:56,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:41:56,473 INFO L480 AbstractCegarLoop]: Abstraction has 163 states and 173 transitions. [2021-02-21 20:41:56,473 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-21 20:41:56,473 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 173 transitions. [2021-02-21 20:41:56,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-02-21 20:41:56,474 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:41:56,474 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] [2021-02-21 20:41:56,475 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 20:41:56,475 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:41:56,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:41:56,475 INFO L82 PathProgramCache]: Analyzing trace with hash -2077510696, now seen corresponding path program 1 times [2021-02-21 20:41:56,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:41:56,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [518574279] [2021-02-21 20:41:56,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:41:56,480 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:41:56,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:41:56,516 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:56,516 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:56,518 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:56,518 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-21 20:41:56,526 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:56,527 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:41:56,534 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:56,535 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-02-21 20:41:56,540 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:56,541 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:56,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:41:56,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:41:56,574 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:56,575 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:56,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:41:56,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [518574279] [2021-02-21 20:41:56,578 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:41:56,578 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 20:41:56,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452945686] [2021-02-21 20:41:56,579 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 20:41:56,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:41:56,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 20:41:56,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-21 20:41:56,580 INFO L87 Difference]: Start difference. First operand 163 states and 173 transitions. Second operand 6 states. [2021-02-21 20:41:57,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:41:57,119 INFO L93 Difference]: Finished difference Result 386 states and 411 transitions. [2021-02-21 20:41:57,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-21 20:41:57,123 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2021-02-21 20:41:57,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:41:57,124 INFO L225 Difference]: With dead ends: 386 [2021-02-21 20:41:57,125 INFO L226 Difference]: Without dead ends: 257 [2021-02-21 20:41:57,128 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-02-21 20:41:57,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2021-02-21 20:41:57,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 166. [2021-02-21 20:41:57,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2021-02-21 20:41:57,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 176 transitions. [2021-02-21 20:41:57,152 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 176 transitions. Word has length 36 [2021-02-21 20:41:57,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:41:57,153 INFO L480 AbstractCegarLoop]: Abstraction has 166 states and 176 transitions. [2021-02-21 20:41:57,153 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 20:41:57,153 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 176 transitions. [2021-02-21 20:41:57,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-02-21 20:41:57,154 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:41:57,154 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] [2021-02-21 20:41:57,154 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 20:41:57,155 INFO L428 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:41:57,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:41:57,155 INFO L82 PathProgramCache]: Analyzing trace with hash -460066315, now seen corresponding path program 1 times [2021-02-21 20:41:57,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:41:57,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1697771139] [2021-02-21 20:41:57,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:41:57,160 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:41:57,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:41:57,236 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:57,237 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:57,239 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:57,240 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 20:41:57,246 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:57,247 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 20:41:57,252 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:57,253 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 20:41:57,258 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:57,259 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:57,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:41:57,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:41:57,289 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:57,290 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:57,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:41:57,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1697771139] [2021-02-21 20:41:57,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:41:57,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 20:41:57,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768434324] [2021-02-21 20:41:57,294 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 20:41:57,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:41:57,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 20:41:57,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-21 20:41:57,295 INFO L87 Difference]: Start difference. First operand 166 states and 176 transitions. Second operand 6 states. [2021-02-21 20:41:57,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:41:57,701 INFO L93 Difference]: Finished difference Result 275 states and 292 transitions. [2021-02-21 20:41:57,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-21 20:41:57,702 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2021-02-21 20:41:57,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:41:57,703 INFO L225 Difference]: With dead ends: 275 [2021-02-21 20:41:57,703 INFO L226 Difference]: Without dead ends: 243 [2021-02-21 20:41:57,704 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-02-21 20:41:57,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2021-02-21 20:41:57,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 165. [2021-02-21 20:41:57,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2021-02-21 20:41:57,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 175 transitions. [2021-02-21 20:41:57,729 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 175 transitions. Word has length 38 [2021-02-21 20:41:57,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:41:57,729 INFO L480 AbstractCegarLoop]: Abstraction has 165 states and 175 transitions. [2021-02-21 20:41:57,729 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 20:41:57,730 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 175 transitions. [2021-02-21 20:41:57,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-02-21 20:41:57,731 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:41:57,731 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] [2021-02-21 20:41:57,731 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 20:41:57,732 INFO L428 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:41:57,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:41:57,732 INFO L82 PathProgramCache]: Analyzing trace with hash -1798842793, now seen corresponding path program 1 times [2021-02-21 20:41:57,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:41:57,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [96906514] [2021-02-21 20:41:57,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:41:57,737 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:41:57,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:41:57,796 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:57,798 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:57,799 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:57,801 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 20:41:57,806 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:57,807 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-21 20:41:57,812 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:57,812 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 20:41:57,819 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:57,820 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 20:41:57,826 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:57,828 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:57,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:41:57,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:41:57,865 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:57,866 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:57,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:41:57,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [96906514] [2021-02-21 20:41:57,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:41:57,870 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-21 20:41:57,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251495406] [2021-02-21 20:41:57,871 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-21 20:41:57,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:41:57,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-21 20:41:57,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-02-21 20:41:57,877 INFO L87 Difference]: Start difference. First operand 165 states and 175 transitions. Second operand 7 states. [2021-02-21 20:41:58,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:41:58,509 INFO L93 Difference]: Finished difference Result 249 states and 265 transitions. [2021-02-21 20:41:58,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-21 20:41:58,510 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 42 [2021-02-21 20:41:58,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:41:58,513 INFO L225 Difference]: With dead ends: 249 [2021-02-21 20:41:58,513 INFO L226 Difference]: Without dead ends: 245 [2021-02-21 20:41:58,515 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-02-21 20:41:58,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2021-02-21 20:41:58,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 161. [2021-02-21 20:41:58,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2021-02-21 20:41:58,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 171 transitions. [2021-02-21 20:41:58,545 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 171 transitions. Word has length 42 [2021-02-21 20:41:58,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:41:58,545 INFO L480 AbstractCegarLoop]: Abstraction has 161 states and 171 transitions. [2021-02-21 20:41:58,545 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-21 20:41:58,546 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 171 transitions. [2021-02-21 20:41:58,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-02-21 20:41:58,547 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:41:58,547 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] [2021-02-21 20:41:58,548 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-21 20:41:58,548 INFO L428 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:41:58,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:41:58,549 INFO L82 PathProgramCache]: Analyzing trace with hash 72837122, now seen corresponding path program 1 times [2021-02-21 20:41:58,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:41:58,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1995338629] [2021-02-21 20:41:58,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:41:58,564 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:41:58,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:41:58,636 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:58,637 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:58,639 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:58,639 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:41:58,643 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:58,643 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:58,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:41:58,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:41:58,677 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:58,677 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:58,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:41:58,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1995338629] [2021-02-21 20:41:58,680 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:41:58,680 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 20:41:58,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021024938] [2021-02-21 20:41:58,681 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 20:41:58,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:41:58,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 20:41:58,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 20:41:58,682 INFO L87 Difference]: Start difference. First operand 161 states and 171 transitions. Second operand 4 states. [2021-02-21 20:41:58,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:41:58,979 INFO L93 Difference]: Finished difference Result 271 states and 291 transitions. [2021-02-21 20:41:58,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 20:41:58,979 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2021-02-21 20:41:58,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:41:58,981 INFO L225 Difference]: With dead ends: 271 [2021-02-21 20:41:58,981 INFO L226 Difference]: Without dead ends: 200 [2021-02-21 20:41:58,982 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 20:41:58,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-02-21 20:41:59,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 164. [2021-02-21 20:41:59,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2021-02-21 20:41:59,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 175 transitions. [2021-02-21 20:41:59,004 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 175 transitions. Word has length 46 [2021-02-21 20:41:59,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:41:59,005 INFO L480 AbstractCegarLoop]: Abstraction has 164 states and 175 transitions. [2021-02-21 20:41:59,005 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 20:41:59,005 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 175 transitions. [2021-02-21 20:41:59,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-02-21 20:41:59,006 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:41:59,006 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] [2021-02-21 20:41:59,007 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-21 20:41:59,007 INFO L428 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:41:59,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:41:59,008 INFO L82 PathProgramCache]: Analyzing trace with hash 1276238821, now seen corresponding path program 1 times [2021-02-21 20:41:59,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:41:59,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [391594129] [2021-02-21 20:41:59,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:41:59,012 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:41:59,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:41:59,037 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:59,038 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:59,039 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:59,040 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 20:41:59,046 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:59,047 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:59,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:41:59,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:41:59,072 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:59,073 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:59,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:41:59,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [391594129] [2021-02-21 20:41:59,076 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:41:59,076 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 20:41:59,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955332787] [2021-02-21 20:41:59,077 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 20:41:59,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:41:59,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 20:41:59,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 20:41:59,078 INFO L87 Difference]: Start difference. First operand 164 states and 175 transitions. Second operand 4 states. [2021-02-21 20:41:59,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:41:59,349 INFO L93 Difference]: Finished difference Result 164 states and 175 transitions. [2021-02-21 20:41:59,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 20:41:59,350 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 48 [2021-02-21 20:41:59,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:41:59,351 INFO L225 Difference]: With dead ends: 164 [2021-02-21 20:41:59,351 INFO L226 Difference]: Without dead ends: 162 [2021-02-21 20:41:59,352 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 20:41:59,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-02-21 20:41:59,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2021-02-21 20:41:59,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2021-02-21 20:41:59,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 173 transitions. [2021-02-21 20:41:59,373 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 173 transitions. Word has length 48 [2021-02-21 20:41:59,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:41:59,374 INFO L480 AbstractCegarLoop]: Abstraction has 162 states and 173 transitions. [2021-02-21 20:41:59,374 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 20:41:59,374 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 173 transitions. [2021-02-21 20:41:59,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-02-21 20:41:59,375 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:41:59,375 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] [2021-02-21 20:41:59,376 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-21 20:41:59,376 INFO L428 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:41:59,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:41:59,376 INFO L82 PathProgramCache]: Analyzing trace with hash -4183988, now seen corresponding path program 1 times [2021-02-21 20:41:59,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:41:59,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [34477466] [2021-02-21 20:41:59,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:41:59,380 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:41:59,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:41:59,420 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:59,420 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:59,422 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:59,422 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-21 20:41:59,430 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:59,430 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-21 20:41:59,446 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:59,447 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-21 20:41:59,459 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:59,460 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-21 20:41:59,471 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:59,473 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:41:59,484 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:59,485 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:41:59,499 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:59,501 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:59,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:41:59,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:41:59,532 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:59,533 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:59,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:41:59,543 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [34477466] [2021-02-21 20:41:59,543 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:41:59,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-21 20:41:59,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756198507] [2021-02-21 20:41:59,544 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-21 20:41:59,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:41:59,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-21 20:41:59,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-21 20:41:59,545 INFO L87 Difference]: Start difference. First operand 162 states and 173 transitions. Second operand 9 states. [2021-02-21 20:42:00,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:42:00,283 INFO L93 Difference]: Finished difference Result 359 states and 386 transitions. [2021-02-21 20:42:00,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-21 20:42:00,284 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 52 [2021-02-21 20:42:00,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:42:00,286 INFO L225 Difference]: With dead ends: 359 [2021-02-21 20:42:00,286 INFO L226 Difference]: Without dead ends: 287 [2021-02-21 20:42:00,287 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2021-02-21 20:42:00,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-02-21 20:42:00,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 181. [2021-02-21 20:42:00,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2021-02-21 20:42:00,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 193 transitions. [2021-02-21 20:42:00,319 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 193 transitions. Word has length 52 [2021-02-21 20:42:00,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:42:00,320 INFO L480 AbstractCegarLoop]: Abstraction has 181 states and 193 transitions. [2021-02-21 20:42:00,320 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-21 20:42:00,320 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 193 transitions. [2021-02-21 20:42:00,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-02-21 20:42:00,321 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:42:00,321 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] [2021-02-21 20:42:00,321 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-21 20:42:00,322 INFO L428 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:42:00,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:42:00,322 INFO L82 PathProgramCache]: Analyzing trace with hash -674720819, now seen corresponding path program 1 times [2021-02-21 20:42:00,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:42:00,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [268644496] [2021-02-21 20:42:00,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:42:00,327 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:42:00,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:00,355 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:00,355 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:00,356 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:00,356 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:00,359 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:00,360 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:00,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:42:00,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:00,384 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:00,384 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:00,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:42:00,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [268644496] [2021-02-21 20:42:00,389 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:42:00,389 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 20:42:00,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482693679] [2021-02-21 20:42:00,389 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 20:42:00,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:42:00,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 20:42:00,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 20:42:00,391 INFO L87 Difference]: Start difference. First operand 181 states and 193 transitions. Second operand 4 states. [2021-02-21 20:42:00,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:42:00,668 INFO L93 Difference]: Finished difference Result 187 states and 199 transitions. [2021-02-21 20:42:00,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 20:42:00,669 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2021-02-21 20:42:00,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:42:00,670 INFO L225 Difference]: With dead ends: 187 [2021-02-21 20:42:00,670 INFO L226 Difference]: Without dead ends: 182 [2021-02-21 20:42:00,671 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 20:42:00,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-02-21 20:42:00,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2021-02-21 20:42:00,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2021-02-21 20:42:00,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 194 transitions. [2021-02-21 20:42:00,698 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 194 transitions. Word has length 56 [2021-02-21 20:42:00,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:42:00,699 INFO L480 AbstractCegarLoop]: Abstraction has 182 states and 194 transitions. [2021-02-21 20:42:00,699 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 20:42:00,699 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 194 transitions. [2021-02-21 20:42:00,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-02-21 20:42:00,700 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:42:00,700 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] [2021-02-21 20:42:00,700 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-21 20:42:00,701 INFO L428 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:42:00,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:42:00,701 INFO L82 PathProgramCache]: Analyzing trace with hash -1815431908, now seen corresponding path program 1 times [2021-02-21 20:42:00,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:42:00,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [449700776] [2021-02-21 20:42:00,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:42:00,735 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 20:42:00,738 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:42:00,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:00,793 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:00,794 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:00,795 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:00,796 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-21 20:42:00,803 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:00,804 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-21 20:42:00,816 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:00,818 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-21 20:42:00,829 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:00,830 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:42:00,841 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:00,843 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:42:00,856 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:00,856 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:00,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:42:00,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:00,889 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:00,890 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:00,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:42:00,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [449700776] [2021-02-21 20:42:00,906 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:42:00,906 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-21 20:42:00,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848221842] [2021-02-21 20:42:00,907 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-21 20:42:00,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:42:00,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-21 20:42:00,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-02-21 20:42:00,911 INFO L87 Difference]: Start difference. First operand 182 states and 194 transitions. Second operand 8 states. [2021-02-21 20:42:01,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:42:01,424 INFO L93 Difference]: Finished difference Result 270 states and 289 transitions. [2021-02-21 20:42:01,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-21 20:42:01,424 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2021-02-21 20:42:01,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:42:01,426 INFO L225 Difference]: With dead ends: 270 [2021-02-21 20:42:01,426 INFO L226 Difference]: Without dead ends: 240 [2021-02-21 20:42:01,427 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-02-21 20:42:01,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2021-02-21 20:42:01,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 221. [2021-02-21 20:42:01,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2021-02-21 20:42:01,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 241 transitions. [2021-02-21 20:42:01,457 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 241 transitions. Word has length 57 [2021-02-21 20:42:01,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:42:01,458 INFO L480 AbstractCegarLoop]: Abstraction has 221 states and 241 transitions. [2021-02-21 20:42:01,458 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-21 20:42:01,458 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 241 transitions. [2021-02-21 20:42:01,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-02-21 20:42:01,459 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:42:01,459 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] [2021-02-21 20:42:01,460 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-02-21 20:42:01,460 INFO L428 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:42:01,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:42:01,461 INFO L82 PathProgramCache]: Analyzing trace with hash -1929887829, now seen corresponding path program 1 times [2021-02-21 20:42:01,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:42:01,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [199509128] [2021-02-21 20:42:01,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:42:01,464 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:42:01,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:01,581 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:01,582 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:01,583 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:01,583 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 20:42:01,590 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:01,591 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 20:42:01,599 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:01,600 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 20:42:01,611 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:01,612 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-21 20:42:01,626 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:01,627 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-02-21 20:42:01,645 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:01,646 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-21 20:42:01,652 WARN L141 QuantifierPusher]: treesize reduction 33, result has 56.0 percent of original size [2021-02-21 20:42:01,654 WARN L147 QuantifierPusher]: treesize reduction 33, result has 56.0 percent of original size 42 [2021-02-21 20:42:01,699 WARN L141 QuantifierPusher]: treesize reduction 19, result has 69.4 percent of original size [2021-02-21 20:42:01,700 WARN L147 QuantifierPusher]: treesize reduction 19, result has 69.4 percent of original size 43 [2021-02-21 20:42:01,723 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:01,725 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-02-21 20:42:01,747 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:01,748 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-21 20:42:01,771 WARN L141 QuantifierPusher]: treesize reduction 10, result has 68.8 percent of original size [2021-02-21 20:42:01,773 WARN L147 QuantifierPusher]: treesize reduction 10, result has 68.8 percent of original size 22 [2021-02-21 20:42:01,800 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:01,801 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:42:01,823 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:01,823 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:01,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:42:01,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:01,866 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:01,869 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:01,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:42:01,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [199509128] [2021-02-21 20:42:01,891 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:42:01,891 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-21 20:42:01,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926232588] [2021-02-21 20:42:01,892 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-21 20:42:01,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:42:01,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-21 20:42:01,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-02-21 20:42:01,893 INFO L87 Difference]: Start difference. First operand 221 states and 241 transitions. Second operand 14 states. [2021-02-21 20:42:03,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:42:03,943 INFO L93 Difference]: Finished difference Result 665 states and 719 transitions. [2021-02-21 20:42:03,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-02-21 20:42:03,944 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 57 [2021-02-21 20:42:03,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:42:03,948 INFO L225 Difference]: With dead ends: 665 [2021-02-21 20:42:03,948 INFO L226 Difference]: Without dead ends: 662 [2021-02-21 20:42:03,949 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=252, Invalid=804, Unknown=0, NotChecked=0, Total=1056 [2021-02-21 20:42:03,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2021-02-21 20:42:04,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 240. [2021-02-21 20:42:04,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2021-02-21 20:42:04,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 262 transitions. [2021-02-21 20:42:04,013 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 262 transitions. Word has length 57 [2021-02-21 20:42:04,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:42:04,013 INFO L480 AbstractCegarLoop]: Abstraction has 240 states and 262 transitions. [2021-02-21 20:42:04,013 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-21 20:42:04,014 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 262 transitions. [2021-02-21 20:42:04,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-02-21 20:42:04,015 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:42:04,015 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] [2021-02-21 20:42:04,015 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-02-21 20:42:04,015 INFO L428 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:42:04,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:42:04,016 INFO L82 PathProgramCache]: Analyzing trace with hash -963591574, now seen corresponding path program 1 times [2021-02-21 20:42:04,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:42:04,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [711081904] [2021-02-21 20:42:04,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:42:04,020 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:42:04,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:04,043 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:04,044 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:04,045 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:04,045 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-21 20:42:04,052 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:04,054 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-21 20:42:04,069 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:04,070 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-21 20:42:04,080 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:04,081 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:42:04,093 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:04,093 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:04,105 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:04,106 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:04,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:42:04,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:04,136 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:04,137 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:04,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:42:04,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [711081904] [2021-02-21 20:42:04,143 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:42:04,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-21 20:42:04,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739131354] [2021-02-21 20:42:04,144 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-21 20:42:04,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:42:04,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-21 20:42:04,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-02-21 20:42:04,145 INFO L87 Difference]: Start difference. First operand 240 states and 262 transitions. Second operand 8 states. [2021-02-21 20:42:04,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:42:04,736 INFO L93 Difference]: Finished difference Result 259 states and 283 transitions. [2021-02-21 20:42:04,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-21 20:42:04,736 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2021-02-21 20:42:04,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:42:04,738 INFO L225 Difference]: With dead ends: 259 [2021-02-21 20:42:04,738 INFO L226 Difference]: Without dead ends: 254 [2021-02-21 20:42:04,739 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2021-02-21 20:42:04,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2021-02-21 20:42:04,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 234. [2021-02-21 20:42:04,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2021-02-21 20:42:04,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 256 transitions. [2021-02-21 20:42:04,794 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 256 transitions. Word has length 58 [2021-02-21 20:42:04,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:42:04,795 INFO L480 AbstractCegarLoop]: Abstraction has 234 states and 256 transitions. [2021-02-21 20:42:04,795 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-21 20:42:04,795 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 256 transitions. [2021-02-21 20:42:04,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-02-21 20:42:04,796 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:42:04,796 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] [2021-02-21 20:42:04,796 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-02-21 20:42:04,796 INFO L428 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:42:04,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:42:04,797 INFO L82 PathProgramCache]: Analyzing trace with hash 450193912, now seen corresponding path program 1 times [2021-02-21 20:42:04,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:42:04,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1477795229] [2021-02-21 20:42:04,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:42:04,801 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:42:04,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:04,869 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:04,870 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:04,870 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:04,871 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 20:42:04,877 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:04,878 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 20:42:04,887 WARN L141 QuantifierPusher]: treesize reduction 9, result has 55.0 percent of original size [2021-02-21 20:42:04,887 WARN L147 QuantifierPusher]: treesize reduction 9, result has 55.0 percent of original size 11 [2021-02-21 20:42:04,898 WARN L141 QuantifierPusher]: treesize reduction 15, result has 60.5 percent of original size [2021-02-21 20:42:04,899 WARN L147 QuantifierPusher]: treesize reduction 15, result has 60.5 percent of original size 23 [2021-02-21 20:42:04,912 WARN L141 QuantifierPusher]: treesize reduction 9, result has 76.3 percent of original size [2021-02-21 20:42:04,913 WARN L147 QuantifierPusher]: treesize reduction 9, result has 76.3 percent of original size 29 [2021-02-21 20:42:04,935 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:04,936 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-02-21 20:42:04,960 WARN L141 QuantifierPusher]: treesize reduction 27, result has 69.0 percent of original size [2021-02-21 20:42:04,962 WARN L147 QuantifierPusher]: treesize reduction 27, result has 69.0 percent of original size 60 [2021-02-21 20:42:05,011 WARN L141 QuantifierPusher]: treesize reduction 15, result has 72.2 percent of original size [2021-02-21 20:42:05,012 WARN L147 QuantifierPusher]: treesize reduction 15, result has 72.2 percent of original size 39 [2021-02-21 20:42:05,032 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:05,033 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-02-21 20:42:05,052 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:05,054 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-21 20:42:05,077 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:05,078 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-21 20:42:05,111 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:05,112 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:42:05,135 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:05,135 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:05,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:42:05,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:05,183 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:05,185 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:05,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:42:05,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1477795229] [2021-02-21 20:42:05,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:42:05,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-21 20:42:05,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130151892] [2021-02-21 20:42:05,213 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-21 20:42:05,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:42:05,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-21 20:42:05,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2021-02-21 20:42:05,214 INFO L87 Difference]: Start difference. First operand 234 states and 256 transitions. Second operand 15 states. [2021-02-21 20:42:07,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:42:07,469 INFO L93 Difference]: Finished difference Result 650 states and 704 transitions. [2021-02-21 20:42:07,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-02-21 20:42:07,469 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 61 [2021-02-21 20:42:07,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:42:07,473 INFO L225 Difference]: With dead ends: 650 [2021-02-21 20:42:07,473 INFO L226 Difference]: Without dead ends: 647 [2021-02-21 20:42:07,474 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=272, Invalid=850, Unknown=0, NotChecked=0, Total=1122 [2021-02-21 20:42:07,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2021-02-21 20:42:07,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 238. [2021-02-21 20:42:07,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2021-02-21 20:42:07,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 260 transitions. [2021-02-21 20:42:07,536 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 260 transitions. Word has length 61 [2021-02-21 20:42:07,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:42:07,537 INFO L480 AbstractCegarLoop]: Abstraction has 238 states and 260 transitions. [2021-02-21 20:42:07,537 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-02-21 20:42:07,537 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 260 transitions. [2021-02-21 20:42:07,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-02-21 20:42:07,538 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:42:07,538 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] [2021-02-21 20:42:07,539 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-02-21 20:42:07,539 INFO L428 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:42:07,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:42:07,539 INFO L82 PathProgramCache]: Analyzing trace with hash 1797611805, now seen corresponding path program 1 times [2021-02-21 20:42:07,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:42:07,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [227856499] [2021-02-21 20:42:07,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:42:07,546 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 20:42:07,549 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:42:07,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:07,571 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:07,571 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:07,573 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:07,573 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 20:42:07,579 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:07,579 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:07,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:42:07,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:07,601 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:07,602 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:07,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:42:07,606 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [227856499] [2021-02-21 20:42:07,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:42:07,607 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 20:42:07,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269475007] [2021-02-21 20:42:07,607 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 20:42:07,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:42:07,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 20:42:07,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 20:42:07,608 INFO L87 Difference]: Start difference. First operand 238 states and 260 transitions. Second operand 4 states. [2021-02-21 20:42:07,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:42:07,954 INFO L93 Difference]: Finished difference Result 243 states and 265 transitions. [2021-02-21 20:42:07,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 20:42:07,955 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2021-02-21 20:42:07,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:42:07,957 INFO L225 Difference]: With dead ends: 243 [2021-02-21 20:42:07,958 INFO L226 Difference]: Without dead ends: 241 [2021-02-21 20:42:07,958 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 20:42:07,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2021-02-21 20:42:08,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 236. [2021-02-21 20:42:08,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2021-02-21 20:42:08,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 258 transitions. [2021-02-21 20:42:08,010 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 258 transitions. Word has length 62 [2021-02-21 20:42:08,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:42:08,010 INFO L480 AbstractCegarLoop]: Abstraction has 236 states and 258 transitions. [2021-02-21 20:42:08,010 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 20:42:08,011 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 258 transitions. [2021-02-21 20:42:08,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-02-21 20:42:08,012 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:42:08,012 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-02-21 20:42:08,012 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-02-21 20:42:08,012 INFO L428 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:42:08,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:42:08,013 INFO L82 PathProgramCache]: Analyzing trace with hash -23328119, now seen corresponding path program 1 times [2021-02-21 20:42:08,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:42:08,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [885807987] [2021-02-21 20:42:08,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:42:08,019 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 20:42:08,022 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:42:08,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:08,052 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:08,052 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:08,053 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:08,054 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-21 20:42:08,061 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:08,062 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-21 20:42:08,065 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:08,066 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-21 20:42:08,074 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:08,075 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:42:08,084 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:08,085 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:42:08,094 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:08,095 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:08,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:42:08,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:08,121 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:08,121 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:08,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:42:08,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [885807987] [2021-02-21 20:42:08,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:42:08,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-21 20:42:08,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713725439] [2021-02-21 20:42:08,138 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-21 20:42:08,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:42:08,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-21 20:42:08,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-02-21 20:42:08,139 INFO L87 Difference]: Start difference. First operand 236 states and 258 transitions. Second operand 7 states. [2021-02-21 20:42:08,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:42:08,693 INFO L93 Difference]: Finished difference Result 387 states and 421 transitions. [2021-02-21 20:42:08,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-21 20:42:08,694 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 63 [2021-02-21 20:42:08,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:42:08,695 INFO L225 Difference]: With dead ends: 387 [2021-02-21 20:42:08,696 INFO L226 Difference]: Without dead ends: 278 [2021-02-21 20:42:08,696 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-02-21 20:42:08,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2021-02-21 20:42:08,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 236. [2021-02-21 20:42:08,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2021-02-21 20:42:08,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 256 transitions. [2021-02-21 20:42:08,758 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 256 transitions. Word has length 63 [2021-02-21 20:42:08,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:42:08,758 INFO L480 AbstractCegarLoop]: Abstraction has 236 states and 256 transitions. [2021-02-21 20:42:08,758 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-21 20:42:08,758 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 256 transitions. [2021-02-21 20:42:08,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-02-21 20:42:08,759 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:42:08,759 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] [2021-02-21 20:42:08,759 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-02-21 20:42:08,759 INFO L428 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:42:08,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:42:08,760 INFO L82 PathProgramCache]: Analyzing trace with hash -1294737916, now seen corresponding path program 1 times [2021-02-21 20:42:08,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:42:08,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [390845453] [2021-02-21 20:42:08,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:42:08,765 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 20:42:08,768 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:42:08,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:08,804 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:08,804 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:08,805 WARN L141 QuantifierPusher]: treesize reduction 4, result has 86.7 percent of original size [2021-02-21 20:42:08,806 WARN L147 QuantifierPusher]: treesize reduction 4, result has 86.7 percent of original size 26 [2021-02-21 20:42:08,826 WARN L141 QuantifierPusher]: treesize reduction 4, result has 95.9 percent of original size [2021-02-21 20:42:08,827 WARN L147 QuantifierPusher]: treesize reduction 4, result has 95.9 percent of original size 94 [2021-02-21 20:42:08,866 WARN L141 QuantifierPusher]: treesize reduction 4, result has 95.9 percent of original size [2021-02-21 20:42:08,867 WARN L147 QuantifierPusher]: treesize reduction 4, result has 95.9 percent of original size 94 [2021-02-21 20:42:08,909 WARN L141 QuantifierPusher]: treesize reduction 4, result has 95.9 percent of original size [2021-02-21 20:42:08,910 WARN L147 QuantifierPusher]: treesize reduction 4, result has 95.9 percent of original size 94 [2021-02-21 20:42:08,955 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:08,956 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-21 20:42:08,967 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:08,968 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:42:08,978 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:08,979 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:42:08,991 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:08,992 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:09,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:42:09,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:09,021 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:09,022 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:09,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:42:09,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [390845453] [2021-02-21 20:42:09,034 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:42:09,034 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-21 20:42:09,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075831857] [2021-02-21 20:42:09,035 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-21 20:42:09,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:42:09,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-21 20:42:09,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-02-21 20:42:09,036 INFO L87 Difference]: Start difference. First operand 236 states and 256 transitions. Second operand 10 states. [2021-02-21 20:42:09,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:42:09,881 INFO L93 Difference]: Finished difference Result 500 states and 541 transitions. [2021-02-21 20:42:09,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-21 20:42:09,882 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 66 [2021-02-21 20:42:09,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:42:09,884 INFO L225 Difference]: With dead ends: 500 [2021-02-21 20:42:09,885 INFO L226 Difference]: Without dead ends: 430 [2021-02-21 20:42:09,886 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-02-21 20:42:09,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2021-02-21 20:42:09,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 322. [2021-02-21 20:42:09,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 322 states. [2021-02-21 20:42:09,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 355 transitions. [2021-02-21 20:42:09,980 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 355 transitions. Word has length 66 [2021-02-21 20:42:09,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:42:09,980 INFO L480 AbstractCegarLoop]: Abstraction has 322 states and 355 transitions. [2021-02-21 20:42:09,980 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-21 20:42:09,980 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 355 transitions. [2021-02-21 20:42:09,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-02-21 20:42:09,981 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:42:09,981 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] [2021-02-21 20:42:09,982 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-02-21 20:42:09,982 INFO L428 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:42:09,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:42:09,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1944566536, now seen corresponding path program 1 times [2021-02-21 20:42:09,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:42:09,983 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1131164526] [2021-02-21 20:42:09,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:42:09,985 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 20:42:09,987 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:42:10,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:10,020 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:10,021 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:10,022 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:10,022 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:42:10,025 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:10,026 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:10,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:42:10,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:10,048 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:10,048 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:10,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:42:10,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1131164526] [2021-02-21 20:42:10,054 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:42:10,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 20:42:10,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015392096] [2021-02-21 20:42:10,055 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 20:42:10,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:42:10,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 20:42:10,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 20:42:10,056 INFO L87 Difference]: Start difference. First operand 322 states and 355 transitions. Second operand 4 states. [2021-02-21 20:42:10,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:42:10,680 INFO L93 Difference]: Finished difference Result 568 states and 640 transitions. [2021-02-21 20:42:10,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 20:42:10,681 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 68 [2021-02-21 20:42:10,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:42:10,685 INFO L225 Difference]: With dead ends: 568 [2021-02-21 20:42:10,685 INFO L226 Difference]: Without dead ends: 432 [2021-02-21 20:42:10,686 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 20:42:10,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2021-02-21 20:42:10,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 371. [2021-02-21 20:42:10,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 371 states. [2021-02-21 20:42:10,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 413 transitions. [2021-02-21 20:42:10,814 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 413 transitions. Word has length 68 [2021-02-21 20:42:10,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:42:10,815 INFO L480 AbstractCegarLoop]: Abstraction has 371 states and 413 transitions. [2021-02-21 20:42:10,815 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 20:42:10,815 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 413 transitions. [2021-02-21 20:42:10,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-02-21 20:42:10,816 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:42:10,817 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-02-21 20:42:10,817 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-02-21 20:42:10,817 INFO L428 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:42:10,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:42:10,817 INFO L82 PathProgramCache]: Analyzing trace with hash -836770595, now seen corresponding path program 1 times [2021-02-21 20:42:10,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:42:10,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1234711756] [2021-02-21 20:42:10,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:42:10,823 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 20:42:10,825 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:42:10,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:10,859 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:10,860 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:10,861 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:10,862 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-02-21 20:42:10,896 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:10,897 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-21 20:42:10,907 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:10,907 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-21 20:42:10,918 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:10,918 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-21 20:42:10,930 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:10,930 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:42:10,942 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:10,943 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:42:10,957 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:10,957 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:42:10,971 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:10,971 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:10,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:42:11,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:42:11,004 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:42:11,004 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:42:11,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:42:11,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1234711756] [2021-02-21 20:42:11,022 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:42:11,022 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-21 20:42:11,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951131262] [2021-02-21 20:42:11,023 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-21 20:42:11,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:42:11,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-21 20:42:11,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-02-21 20:42:11,024 INFO L87 Difference]: Start difference. First operand 371 states and 413 transitions. Second operand 10 states. [2021-02-21 20:42:12,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:42:12,004 INFO L93 Difference]: Finished difference Result 610 states and 676 transitions. [2021-02-21 20:42:12,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-21 20:42:12,004 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 71 [2021-02-21 20:42:12,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:42:12,007 INFO L225 Difference]: With dead ends: 610 [2021-02-21 20:42:12,007 INFO L226 Difference]: Without dead ends: 550 [2021-02-21 20:42:12,008 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2021-02-21 20:42:12,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2021-02-21 20:42:12,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 418. [2021-02-21 20:42:12,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418 states. [2021-02-21 20:42:12,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 468 transitions. [2021-02-21 20:42:12,161 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 468 transitions. Word has length 71 [2021-02-21 20:42:12,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:42:12,162 INFO L480 AbstractCegarLoop]: Abstraction has 418 states and 468 transitions. [2021-02-21 20:42:12,162 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-21 20:42:12,162 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 468 transitions. [2021-02-21 20:42:12,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-02-21 20:42:12,163 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:42:12,163 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-02-21 20:42:12,163 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-02-21 20:42:12,164 INFO L428 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:42:12,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:42:12,164 INFO L82 PathProgramCache]: Analyzing trace with hash -1109198014, now seen corresponding path program 1 times [2021-02-21 20:42:12,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:42:12,164 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1385047844] [2021-02-21 20:42:12,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:42:12,173 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 20:42:12,176 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:42:12,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 20:42:12,195 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 20:42:12,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 20:42:12,214 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 20:42:12,254 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-21 20:42:12,255 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 20:42:12,255 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-02-21 20:42:12,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 08:42:12 BoogieIcfgContainer [2021-02-21 20:42:12,277 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 20:42:12,278 INFO L168 Benchmark]: Toolchain (without parser) took 20731.41 ms. Allocated memory was 151.0 MB in the beginning and 314.6 MB in the end (delta: 163.6 MB). Free memory was 125.8 MB in the beginning and 234.9 MB in the end (delta: -109.1 MB). Peak memory consumption was 54.6 MB. Max. memory is 8.0 GB. [2021-02-21 20:42:12,278 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 151.0 MB. Free memory was 124.6 MB in the beginning and 124.5 MB in the end (delta: 80.1 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 20:42:12,278 INFO L168 Benchmark]: CACSL2BoogieTranslator took 654.88 ms. Allocated memory is still 151.0 MB. Free memory was 124.6 MB in the beginning and 131.0 MB in the end (delta: -6.4 MB). Peak memory consumption was 27.8 MB. Max. memory is 8.0 GB. [2021-02-21 20:42:12,279 INFO L168 Benchmark]: Boogie Preprocessor took 130.17 ms. Allocated memory is still 151.0 MB. Free memory was 131.0 MB in the beginning and 128.0 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-02-21 20:42:12,279 INFO L168 Benchmark]: RCFGBuilder took 1313.07 ms. Allocated memory is still 151.0 MB. Free memory was 128.0 MB in the beginning and 125.6 MB in the end (delta: 2.4 MB). Peak memory consumption was 61.1 MB. Max. memory is 8.0 GB. [2021-02-21 20:42:12,279 INFO L168 Benchmark]: TraceAbstraction took 18609.49 ms. Allocated memory was 151.0 MB in the beginning and 314.6 MB in the end (delta: 163.6 MB). Free memory was 125.1 MB in the beginning and 234.9 MB in the end (delta: -109.8 MB). Peak memory consumption was 53.7 MB. Max. memory is 8.0 GB. [2021-02-21 20:42:12,280 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 151.0 MB. Free memory was 124.6 MB in the beginning and 124.5 MB in the end (delta: 80.1 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 654.88 ms. Allocated memory is still 151.0 MB. Free memory was 124.6 MB in the beginning and 131.0 MB in the end (delta: -6.4 MB). Peak memory consumption was 27.8 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 130.17 ms. Allocated memory is still 151.0 MB. Free memory was 131.0 MB in the beginning and 128.0 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1313.07 ms. Allocated memory is still 151.0 MB. Free memory was 128.0 MB in the beginning and 125.6 MB in the end (delta: 2.4 MB). Peak memory consumption was 61.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 18609.49 ms. Allocated memory was 151.0 MB in the beginning and 314.6 MB in the end (delta: 163.6 MB). Free memory was 125.1 MB in the beginning and 234.9 MB in the end (delta: -109.8 MB). Peak memory consumption was 53.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1036]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1002] SLL* list = malloc(sizeof(SLL)); [L1003] list->next = ((void*)0) [L1004] COND FALSE !(!(list != ((void*)0))) [L1004] COND FALSE !(__VERIFIER_nondet_int()) [L1004] list->inner = malloc(sizeof(SLL)) [L1004] EXPR list->inner [L1004] list->inner->next = ((void*)0) [L1004] EXPR list->inner [L1004] list->inner->inner = ((void*)0) [L1004] EXPR list->inner [L1004] EXPR list->inner != ((void*)0) || list->inner == ((void*)0) [L1004] COND FALSE !(!(list->inner != ((void*)0) || list->inner == ((void*)0))) [L1006] SLL* end = list; [L1009] COND FALSE !(__VERIFIER_nondet_int()) [L1019] end = ((void*)0) [L1020] end = list [L1023] COND FALSE !(!(((void*)0) != end)) [L1025] COND TRUE ((void*)0) != end [L1027] int len = 0; [L1028] EXPR end->inner [L1028] SLL* inner = end->inner; [L1029] COND TRUE ((void*)0) != inner [L1031] COND TRUE len == 0 [L1032] len = 1 [L1035] COND FALSE !(!(((void*)0) != inner)) [L1036] EXPR inner->inner [L1036] COND FALSE !(!(((void*)0) == inner->inner)) [L1037] EXPR inner->next [L1037] COND FALSE !(!(((void*)0) == inner->next)) [L1038] EXPR inner->inner [L1038] inner = inner->inner [L1039] COND TRUE len == 1 [L1040] EXPR inner->inner [L1040] inner = inner->inner [L1029] COND TRUE ((void*)0) != inner [L1031] COND FALSE !(len == 0) [L1034] len = 2 [L1035] COND FALSE !(!(((void*)0) != inner)) [L1036] EXPR inner->inner [L1036] COND TRUE !(((void*)0) == inner->inner) [L1036] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 193 locations, 13 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 18.5s, OverallIterations: 20, TraceHistogramMax: 2, AutomataDifference: 13.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3245 SDtfs, 5027 SDslu, 9907 SDs, 0 SdLazy, 6728 SolverSat, 220 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 254 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 4.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=418occurred in iteration=19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 19 MinimizatonAttempts, 1738 StatesRemovedByMinimization, 16 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...