/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-36cd7be [2021-02-23 18:09:36,857 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 18:09:36,860 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 18:09:36,895 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 18:09:36,895 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 18:09:36,897 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 18:09:36,898 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 18:09:36,901 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 18:09:36,903 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 18:09:36,904 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 18:09:36,905 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 18:09:36,907 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 18:09:36,907 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 18:09:36,909 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 18:09:36,910 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 18:09:36,912 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 18:09:36,913 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 18:09:36,914 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 18:09:36,916 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 18:09:36,918 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 18:09:36,920 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 18:09:36,921 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 18:09:36,923 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 18:09:36,924 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 18:09:36,952 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 18:09:36,953 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 18:09:36,953 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 18:09:36,959 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 18:09:36,960 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 18:09:36,963 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 18:09:36,964 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 18:09:36,964 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 18:09:36,965 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 18:09:36,966 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 18:09:36,968 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 18:09:36,969 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 18:09:36,969 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 18:09:36,969 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 18:09:36,970 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 18:09:36,971 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 18:09:36,972 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 18:09:36,973 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 18:09:36,995 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 18:09:36,995 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 18:09:36,999 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 18:09:37,000 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 18:09:37,000 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 18:09:37,000 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 18:09:37,000 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 18:09:37,000 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 18:09:37,001 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 18:09:37,001 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 18:09:37,002 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 18:09:37,002 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 18:09:37,002 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 18:09:37,002 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 18:09:37,003 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 18:09:37,003 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 18:09:37,003 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 18:09:37,003 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 18:09:37,003 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 18:09:37,004 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 18:09:37,004 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 18:09:37,004 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 18:09:37,004 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 18:09:37,412 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 18:09:37,436 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 18:09:37,439 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 18:09:37,440 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 18:09:37,441 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 18:09:37,442 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-01-2.i [2021-02-23 18:09:37,521 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b56ba59c2/0a229561e8cd4b6e9c002e65c8e14422/FLAG1ed1894df [2021-02-23 18:09:38,180 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 18:09:38,181 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-01-2.i [2021-02-23 18:09:38,199 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b56ba59c2/0a229561e8cd4b6e9c002e65c8e14422/FLAG1ed1894df [2021-02-23 18:09:38,466 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b56ba59c2/0a229561e8cd4b6e9c002e65c8e14422 [2021-02-23 18:09:38,469 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 18:09:38,482 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 18:09:38,486 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 18:09:38,487 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 18:09:38,490 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 18:09:38,491 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:09:38" (1/1) ... [2021-02-23 18:09:38,493 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71cac0e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:09:38, skipping insertion in model container [2021-02-23 18:09:38,493 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:09:38" (1/1) ... [2021-02-23 18:09:38,502 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 18:09:38,573 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 18:09:38,833 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] [2021-02-23 18:09:38,841 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] [2021-02-23 18:09:38,844 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] [2021-02-23 18:09:38,845 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] [2021-02-23 18:09:38,848 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] [2021-02-23 18:09:38,849 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] [2021-02-23 18:09:38,852 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] [2021-02-23 18:09:38,853 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] [2021-02-23 18:09:38,854 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] [2021-02-23 18:09:38,855 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] [2021-02-23 18:09:38,857 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] [2021-02-23 18:09:38,858 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] [2021-02-23 18:09:38,859 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] [2021-02-23 18:09:38,863 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:09:38,872 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 18:09:38,907 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] [2021-02-23 18:09:38,913 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] [2021-02-23 18:09:38,917 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] [2021-02-23 18:09:38,918 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] [2021-02-23 18:09:38,924 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] [2021-02-23 18:09:38,928 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[22961,22974] [2021-02-23 18:09:38,930 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] [2021-02-23 18:09:38,931 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] [2021-02-23 18:09:38,931 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] [2021-02-23 18:09:38,933 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] [2021-02-23 18:09:38,935 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] [2021-02-23 18:09:38,935 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] [2021-02-23 18:09:38,936 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[23817,23830] [2021-02-23 18:09:38,938 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:09:38,994 INFO L208 MainTranslator]: Completed translation [2021-02-23 18:09:38,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:09:38 WrapperNode [2021-02-23 18:09:38,995 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 18:09:38,996 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 18:09:38,996 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 18:09:38,996 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 18:09:39,009 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:09:38" (1/1) ... [2021-02-23 18:09:39,010 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:09:38" (1/1) ... [2021-02-23 18:09:39,026 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:09:38" (1/1) ... [2021-02-23 18:09:39,026 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:09:38" (1/1) ... [2021-02-23 18:09:39,058 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:09:38" (1/1) ... [2021-02-23 18:09:39,072 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:09:38" (1/1) ... [2021-02-23 18:09:39,078 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:09:38" (1/1) ... [2021-02-23 18:09:39,085 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 18:09:39,086 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 18:09:39,087 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 18:09:39,087 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 18:09:39,088 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:09:38" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 18:09:39,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 18:09:39,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 18:09:39,192 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 18:09:39,192 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 18:09:39,192 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-02-23 18:09:39,192 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-02-23 18:09:39,192 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-02-23 18:09:39,193 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-02-23 18:09:39,193 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-02-23 18:09:39,193 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-02-23 18:09:39,193 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-02-23 18:09:39,193 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-02-23 18:09:39,194 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-02-23 18:09:39,194 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-02-23 18:09:39,194 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-02-23 18:09:39,195 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-02-23 18:09:39,195 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-02-23 18:09:39,195 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-02-23 18:09:39,195 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-02-23 18:09:39,197 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-02-23 18:09:39,197 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-02-23 18:09:39,198 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-02-23 18:09:39,198 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-02-23 18:09:39,198 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-02-23 18:09:39,198 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-02-23 18:09:39,198 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-02-23 18:09:39,198 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-02-23 18:09:39,199 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-02-23 18:09:39,199 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-02-23 18:09:39,199 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-02-23 18:09:39,199 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-02-23 18:09:39,199 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-02-23 18:09:39,199 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-02-23 18:09:39,199 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-02-23 18:09:39,200 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-02-23 18:09:39,200 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-02-23 18:09:39,201 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-02-23 18:09:39,201 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-02-23 18:09:39,202 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-02-23 18:09:39,202 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-02-23 18:09:39,202 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-02-23 18:09:39,202 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-02-23 18:09:39,202 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-02-23 18:09:39,202 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-02-23 18:09:39,203 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-02-23 18:09:39,203 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-02-23 18:09:39,204 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-02-23 18:09:39,204 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-02-23 18:09:39,204 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-02-23 18:09:39,204 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-02-23 18:09:39,204 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-02-23 18:09:39,205 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-02-23 18:09:39,209 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-02-23 18:09:39,209 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-02-23 18:09:39,209 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 18:09:39,209 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-02-23 18:09:39,210 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-02-23 18:09:39,210 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-23 18:09:39,211 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-02-23 18:09:39,211 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-02-23 18:09:39,211 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-02-23 18:09:39,212 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-02-23 18:09:39,212 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-02-23 18:09:39,212 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 18:09:39,213 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-02-23 18:09:39,214 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-02-23 18:09:39,214 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-02-23 18:09:39,214 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-02-23 18:09:39,215 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-02-23 18:09:39,215 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-02-23 18:09:39,215 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-02-23 18:09:39,215 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-02-23 18:09:39,215 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-02-23 18:09:39,215 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-02-23 18:09:39,215 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-02-23 18:09:39,216 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-02-23 18:09:39,216 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-02-23 18:09:39,216 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-02-23 18:09:39,216 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-02-23 18:09:39,216 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-02-23 18:09:39,216 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-02-23 18:09:39,217 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-02-23 18:09:39,217 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-02-23 18:09:39,217 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-02-23 18:09:39,218 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-02-23 18:09:39,218 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-02-23 18:09:39,218 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-02-23 18:09:39,218 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-02-23 18:09:39,219 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-02-23 18:09:39,219 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-02-23 18:09:39,219 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-02-23 18:09:39,219 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-02-23 18:09:39,219 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-02-23 18:09:39,219 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-02-23 18:09:39,219 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-02-23 18:09:39,220 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-02-23 18:09:39,220 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-02-23 18:09:39,220 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-02-23 18:09:39,220 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-02-23 18:09:39,221 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-02-23 18:09:39,221 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-02-23 18:09:39,222 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-02-23 18:09:39,222 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-02-23 18:09:39,222 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-02-23 18:09:39,223 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-02-23 18:09:39,223 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-02-23 18:09:39,223 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-02-23 18:09:39,223 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 18:09:39,223 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 18:09:39,223 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-23 18:09:39,224 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-23 18:09:39,224 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 18:09:39,224 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 18:09:39,225 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 18:09:39,225 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 18:09:39,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-23 18:09:39,225 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-23 18:09:39,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 18:09:39,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 18:09:39,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 18:09:39,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 18:09:39,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 18:09:39,230 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 18:09:40,262 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 18:09:40,267 INFO L299 CfgBuilder]: Removed 30 assume(true) statements. [2021-02-23 18:09:40,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:09:40 BoogieIcfgContainer [2021-02-23 18:09:40,272 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 18:09:40,275 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 18:09:40,275 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 18:09:40,278 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 18:09:40,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 06:09:38" (1/3) ... [2021-02-23 18:09:40,279 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63c1cef8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:09:40, skipping insertion in model container [2021-02-23 18:09:40,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:09:38" (2/3) ... [2021-02-23 18:09:40,280 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63c1cef8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:09:40, skipping insertion in model container [2021-02-23 18:09:40,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:09:40" (3/3) ... [2021-02-23 18:09:40,281 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-01-2.i [2021-02-23 18:09:40,292 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 18:09:40,297 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2021-02-23 18:09:40,312 INFO L253 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2021-02-23 18:09:40,335 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 18:09:40,335 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 18:09:40,335 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 18:09:40,335 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 18:09:40,335 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 18:09:40,335 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 18:09:40,336 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 18:09:40,336 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 18:09:40,358 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states. [2021-02-23 18:09:40,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-02-23 18:09:40,367 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:09:40,367 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:09:40,368 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]=== [2021-02-23 18:09:40,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:09:40,374 INFO L82 PathProgramCache]: Analyzing trace with hash 686903667, now seen corresponding path program 1 times [2021-02-23 18:09:40,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:09:40,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1918544702] [2021-02-23 18:09:40,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:09:40,472 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:09:40,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:09:40,614 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:40,615 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:40,616 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:40,618 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:09:40,630 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:40,631 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:09:40,636 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:40,637 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:40,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:09:40,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:09:40,674 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:40,675 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:40,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:09:40,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1918544702] [2021-02-23 18:09:40,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:09:40,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-23 18:09:40,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987527025] [2021-02-23 18:09:40,688 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-23 18:09:40,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:09:40,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-23 18:09:40,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-23 18:09:40,706 INFO L87 Difference]: Start difference. First operand 188 states. Second operand 5 states. [2021-02-23 18:09:41,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:09:41,097 INFO L93 Difference]: Finished difference Result 377 states and 495 transitions. [2021-02-23 18:09:41,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 18:09:41,099 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2021-02-23 18:09:41,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:09:41,111 INFO L225 Difference]: With dead ends: 377 [2021-02-23 18:09:41,111 INFO L226 Difference]: Without dead ends: 198 [2021-02-23 18:09:41,116 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 [2021-02-23 18:09:41,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-02-23 18:09:41,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 168. [2021-02-23 18:09:41,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2021-02-23 18:09:41,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 178 transitions. [2021-02-23 18:09:41,179 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 178 transitions. Word has length 16 [2021-02-23 18:09:41,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:09:41,179 INFO L480 AbstractCegarLoop]: Abstraction has 168 states and 178 transitions. [2021-02-23 18:09:41,179 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-23 18:09:41,180 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 178 transitions. [2021-02-23 18:09:41,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-02-23 18:09:41,181 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:09:41,181 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] [2021-02-23 18:09:41,181 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 18:09:41,182 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]=== [2021-02-23 18:09:41,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:09:41,182 INFO L82 PathProgramCache]: Analyzing trace with hash -1562484955, now seen corresponding path program 1 times [2021-02-23 18:09:41,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:09:41,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1221235674] [2021-02-23 18:09:41,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:09:41,189 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:09:41,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:09:41,240 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:41,241 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:41,241 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:41,242 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:41,245 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:41,245 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:41,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:09:41,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:09:41,273 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:41,274 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:41,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:09:41,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1221235674] [2021-02-23 18:09:41,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:09:41,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 18:09:41,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295227816] [2021-02-23 18:09:41,280 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 18:09:41,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:09:41,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 18:09:41,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 18:09:41,282 INFO L87 Difference]: Start difference. First operand 168 states and 178 transitions. Second operand 4 states. [2021-02-23 18:09:41,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:09:41,537 INFO L93 Difference]: Finished difference Result 174 states and 184 transitions. [2021-02-23 18:09:41,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 18:09:41,538 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2021-02-23 18:09:41,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:09:41,540 INFO L225 Difference]: With dead ends: 174 [2021-02-23 18:09:41,540 INFO L226 Difference]: Without dead ends: 169 [2021-02-23 18:09:41,541 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 [2021-02-23 18:09:41,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-02-23 18:09:41,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2021-02-23 18:09:41,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2021-02-23 18:09:41,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 179 transitions. [2021-02-23 18:09:41,564 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 179 transitions. Word has length 28 [2021-02-23 18:09:41,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:09:41,564 INFO L480 AbstractCegarLoop]: Abstraction has 169 states and 179 transitions. [2021-02-23 18:09:41,564 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 18:09:41,565 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 179 transitions. [2021-02-23 18:09:41,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-02-23 18:09:41,566 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:09:41,566 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] [2021-02-23 18:09:41,566 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 18:09:41,566 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]=== [2021-02-23 18:09:41,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:09:41,567 INFO L82 PathProgramCache]: Analyzing trace with hash 593562178, now seen corresponding path program 1 times [2021-02-23 18:09:41,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:09:41,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [778931423] [2021-02-23 18:09:41,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:09:41,573 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:09:41,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:09:41,614 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:41,615 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:41,624 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:41,625 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-23 18:09:41,634 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:41,635 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-23 18:09:41,648 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:41,649 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-23 18:09:41,661 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:41,662 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:09:41,670 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:41,671 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:41,677 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:41,678 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:41,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:09:41,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:09:41,735 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:41,736 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:41,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:09:41,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [778931423] [2021-02-23 18:09:41,744 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:09:41,744 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-23 18:09:41,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516651281] [2021-02-23 18:09:41,745 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-23 18:09:41,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:09:41,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-23 18:09:41,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-02-23 18:09:41,746 INFO L87 Difference]: Start difference. First operand 169 states and 179 transitions. Second operand 8 states. [2021-02-23 18:09:42,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:09:42,241 INFO L93 Difference]: Finished difference Result 264 states and 281 transitions. [2021-02-23 18:09:42,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-23 18:09:42,241 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2021-02-23 18:09:42,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:09:42,244 INFO L225 Difference]: With dead ends: 264 [2021-02-23 18:09:42,244 INFO L226 Difference]: Without dead ends: 259 [2021-02-23 18:09:42,245 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2021-02-23 18:09:42,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2021-02-23 18:09:42,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 163. [2021-02-23 18:09:42,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2021-02-23 18:09:42,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 173 transitions. [2021-02-23 18:09:42,272 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 173 transitions. Word has length 30 [2021-02-23 18:09:42,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:09:42,272 INFO L480 AbstractCegarLoop]: Abstraction has 163 states and 173 transitions. [2021-02-23 18:09:42,272 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-23 18:09:42,272 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 173 transitions. [2021-02-23 18:09:42,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-02-23 18:09:42,273 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:09:42,274 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] [2021-02-23 18:09:42,274 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 18:09:42,274 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]=== [2021-02-23 18:09:42,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:09:42,275 INFO L82 PathProgramCache]: Analyzing trace with hash -2077510696, now seen corresponding path program 1 times [2021-02-23 18:09:42,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:09:42,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [600843852] [2021-02-23 18:09:42,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:09:42,280 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:09:42,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:09:42,316 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:42,317 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:42,318 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:42,319 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-23 18:09:42,325 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:42,326 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:09:42,332 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:42,333 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-02-23 18:09:42,338 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:42,338 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:42,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:09:42,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:09:42,364 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:42,364 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:42,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:09:42,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [600843852] [2021-02-23 18:09:42,368 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:09:42,368 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 18:09:42,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753096923] [2021-02-23 18:09:42,368 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 18:09:42,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:09:42,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 18:09:42,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-23 18:09:42,370 INFO L87 Difference]: Start difference. First operand 163 states and 173 transitions. Second operand 6 states. [2021-02-23 18:09:42,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:09:42,769 INFO L93 Difference]: Finished difference Result 386 states and 411 transitions. [2021-02-23 18:09:42,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-23 18:09:42,770 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2021-02-23 18:09:42,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:09:42,772 INFO L225 Difference]: With dead ends: 386 [2021-02-23 18:09:42,772 INFO L226 Difference]: Without dead ends: 257 [2021-02-23 18:09:42,773 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 [2021-02-23 18:09:42,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2021-02-23 18:09:42,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 166. [2021-02-23 18:09:42,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2021-02-23 18:09:42,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 176 transitions. [2021-02-23 18:09:42,796 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 176 transitions. Word has length 36 [2021-02-23 18:09:42,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:09:42,797 INFO L480 AbstractCegarLoop]: Abstraction has 166 states and 176 transitions. [2021-02-23 18:09:42,797 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 18:09:42,797 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 176 transitions. [2021-02-23 18:09:42,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-02-23 18:09:42,798 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:09:42,799 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] [2021-02-23 18:09:42,799 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 18:09:42,799 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]=== [2021-02-23 18:09:42,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:09:42,800 INFO L82 PathProgramCache]: Analyzing trace with hash -460066315, now seen corresponding path program 1 times [2021-02-23 18:09:42,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:09:42,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [28541877] [2021-02-23 18:09:42,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:09:42,804 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:09:42,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:09:42,862 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:42,862 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:42,863 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:42,864 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:09:42,867 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:42,868 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:09:42,871 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:42,872 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:09:42,877 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:42,878 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:42,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:09:42,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:09:42,908 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:42,908 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:42,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:09:42,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [28541877] [2021-02-23 18:09:42,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:09:42,913 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 18:09:42,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158480666] [2021-02-23 18:09:42,914 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 18:09:42,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:09:42,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 18:09:42,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-23 18:09:42,915 INFO L87 Difference]: Start difference. First operand 166 states and 176 transitions. Second operand 6 states. [2021-02-23 18:09:43,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:09:43,254 INFO L93 Difference]: Finished difference Result 275 states and 292 transitions. [2021-02-23 18:09:43,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 18:09:43,255 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2021-02-23 18:09:43,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:09:43,256 INFO L225 Difference]: With dead ends: 275 [2021-02-23 18:09:43,256 INFO L226 Difference]: Without dead ends: 243 [2021-02-23 18:09:43,257 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 [2021-02-23 18:09:43,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2021-02-23 18:09:43,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 165. [2021-02-23 18:09:43,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2021-02-23 18:09:43,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 175 transitions. [2021-02-23 18:09:43,279 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 175 transitions. Word has length 38 [2021-02-23 18:09:43,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:09:43,279 INFO L480 AbstractCegarLoop]: Abstraction has 165 states and 175 transitions. [2021-02-23 18:09:43,279 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 18:09:43,279 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 175 transitions. [2021-02-23 18:09:43,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-02-23 18:09:43,281 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:09:43,281 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] [2021-02-23 18:09:43,281 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 18:09:43,281 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]=== [2021-02-23 18:09:43,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:09:43,282 INFO L82 PathProgramCache]: Analyzing trace with hash -1798842793, now seen corresponding path program 1 times [2021-02-23 18:09:43,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:09:43,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [239158198] [2021-02-23 18:09:43,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:09:43,286 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:09:43,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:09:43,323 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:43,323 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:43,327 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:43,329 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:09:43,335 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:43,336 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-23 18:09:43,341 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:43,341 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:09:43,347 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:43,348 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:09:43,354 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:43,356 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:43,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:09:43,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:09:43,391 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:43,392 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:43,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:09:43,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [239158198] [2021-02-23 18:09:43,396 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:09:43,397 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-23 18:09:43,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027679923] [2021-02-23 18:09:43,398 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-23 18:09:43,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:09:43,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-23 18:09:43,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-02-23 18:09:43,399 INFO L87 Difference]: Start difference. First operand 165 states and 175 transitions. Second operand 7 states. [2021-02-23 18:09:43,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:09:43,969 INFO L93 Difference]: Finished difference Result 249 states and 265 transitions. [2021-02-23 18:09:43,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-23 18:09:43,970 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 42 [2021-02-23 18:09:43,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:09:43,975 INFO L225 Difference]: With dead ends: 249 [2021-02-23 18:09:43,975 INFO L226 Difference]: Without dead ends: 245 [2021-02-23 18:09:43,976 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-02-23 18:09:43,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2021-02-23 18:09:44,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 161. [2021-02-23 18:09:44,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2021-02-23 18:09:44,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 171 transitions. [2021-02-23 18:09:44,006 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 171 transitions. Word has length 42 [2021-02-23 18:09:44,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:09:44,006 INFO L480 AbstractCegarLoop]: Abstraction has 161 states and 171 transitions. [2021-02-23 18:09:44,006 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-23 18:09:44,006 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 171 transitions. [2021-02-23 18:09:44,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-02-23 18:09:44,007 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:09:44,007 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] [2021-02-23 18:09:44,007 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-23 18:09:44,008 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]=== [2021-02-23 18:09:44,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:09:44,008 INFO L82 PathProgramCache]: Analyzing trace with hash 72837122, now seen corresponding path program 1 times [2021-02-23 18:09:44,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:09:44,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1822107008] [2021-02-23 18:09:44,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:09:44,013 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:09:44,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:09:44,040 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:44,041 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:44,042 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:44,042 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:09:44,045 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:44,046 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:44,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:09:44,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:09:44,069 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:44,070 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:44,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:09:44,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1822107008] [2021-02-23 18:09:44,073 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:09:44,073 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 18:09:44,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497690766] [2021-02-23 18:09:44,074 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 18:09:44,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:09:44,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 18:09:44,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 18:09:44,075 INFO L87 Difference]: Start difference. First operand 161 states and 171 transitions. Second operand 4 states. [2021-02-23 18:09:44,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:09:44,358 INFO L93 Difference]: Finished difference Result 271 states and 291 transitions. [2021-02-23 18:09:44,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 18:09:44,358 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2021-02-23 18:09:44,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:09:44,360 INFO L225 Difference]: With dead ends: 271 [2021-02-23 18:09:44,360 INFO L226 Difference]: Without dead ends: 200 [2021-02-23 18:09:44,361 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 [2021-02-23 18:09:44,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-02-23 18:09:44,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 164. [2021-02-23 18:09:44,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2021-02-23 18:09:44,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 175 transitions. [2021-02-23 18:09:44,387 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 175 transitions. Word has length 46 [2021-02-23 18:09:44,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:09:44,387 INFO L480 AbstractCegarLoop]: Abstraction has 164 states and 175 transitions. [2021-02-23 18:09:44,387 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 18:09:44,387 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 175 transitions. [2021-02-23 18:09:44,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-02-23 18:09:44,389 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:09:44,389 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] [2021-02-23 18:09:44,389 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-23 18:09:44,389 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]=== [2021-02-23 18:09:44,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:09:44,390 INFO L82 PathProgramCache]: Analyzing trace with hash 1276238821, now seen corresponding path program 1 times [2021-02-23 18:09:44,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:09:44,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1989953979] [2021-02-23 18:09:44,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:09:44,394 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:09:44,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:09:44,420 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:44,420 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:44,421 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:44,422 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 18:09:44,427 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:44,428 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:44,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:09:44,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:09:44,451 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:44,451 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:44,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:09:44,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1989953979] [2021-02-23 18:09:44,455 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:09:44,455 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 18:09:44,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897396825] [2021-02-23 18:09:44,456 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 18:09:44,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:09:44,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 18:09:44,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 18:09:44,457 INFO L87 Difference]: Start difference. First operand 164 states and 175 transitions. Second operand 4 states. [2021-02-23 18:09:44,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:09:44,702 INFO L93 Difference]: Finished difference Result 164 states and 175 transitions. [2021-02-23 18:09:44,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 18:09:44,702 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 48 [2021-02-23 18:09:44,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:09:44,704 INFO L225 Difference]: With dead ends: 164 [2021-02-23 18:09:44,704 INFO L226 Difference]: Without dead ends: 162 [2021-02-23 18:09:44,705 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 [2021-02-23 18:09:44,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-02-23 18:09:44,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2021-02-23 18:09:44,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2021-02-23 18:09:44,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 173 transitions. [2021-02-23 18:09:44,729 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 173 transitions. Word has length 48 [2021-02-23 18:09:44,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:09:44,730 INFO L480 AbstractCegarLoop]: Abstraction has 162 states and 173 transitions. [2021-02-23 18:09:44,730 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 18:09:44,730 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 173 transitions. [2021-02-23 18:09:44,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-02-23 18:09:44,731 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:09:44,731 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:09:44,731 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-23 18:09:44,732 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]=== [2021-02-23 18:09:44,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:09:44,732 INFO L82 PathProgramCache]: Analyzing trace with hash -4183988, now seen corresponding path program 1 times [2021-02-23 18:09:44,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:09:44,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1302414541] [2021-02-23 18:09:44,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:09:44,736 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:09:44,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:09:44,775 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:44,776 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:44,777 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:44,778 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-23 18:09:44,785 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:44,786 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-23 18:09:44,797 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:44,798 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-23 18:09:44,809 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:44,810 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-23 18:09:44,821 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:44,822 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:09:44,833 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:44,834 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:09:44,847 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:44,849 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:44,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:09:44,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:09:44,880 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:44,881 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:44,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:09:44,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1302414541] [2021-02-23 18:09:44,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:09:44,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 18:09:44,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152232295] [2021-02-23 18:09:44,893 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 18:09:44,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:09:44,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 18:09:44,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-23 18:09:44,894 INFO L87 Difference]: Start difference. First operand 162 states and 173 transitions. Second operand 9 states. [2021-02-23 18:09:45,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:09:45,531 INFO L93 Difference]: Finished difference Result 359 states and 386 transitions. [2021-02-23 18:09:45,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-23 18:09:45,531 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 52 [2021-02-23 18:09:45,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:09:45,533 INFO L225 Difference]: With dead ends: 359 [2021-02-23 18:09:45,533 INFO L226 Difference]: Without dead ends: 287 [2021-02-23 18:09:45,534 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 [2021-02-23 18:09:45,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-02-23 18:09:45,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 181. [2021-02-23 18:09:45,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2021-02-23 18:09:45,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 193 transitions. [2021-02-23 18:09:45,562 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 193 transitions. Word has length 52 [2021-02-23 18:09:45,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:09:45,563 INFO L480 AbstractCegarLoop]: Abstraction has 181 states and 193 transitions. [2021-02-23 18:09:45,563 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 18:09:45,563 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 193 transitions. [2021-02-23 18:09:45,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-02-23 18:09:45,564 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:09:45,564 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] [2021-02-23 18:09:45,564 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-23 18:09:45,565 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]=== [2021-02-23 18:09:45,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:09:45,565 INFO L82 PathProgramCache]: Analyzing trace with hash -674720819, now seen corresponding path program 1 times [2021-02-23 18:09:45,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:09:45,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [520819677] [2021-02-23 18:09:45,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:09:45,569 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:09:45,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:09:45,597 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:45,598 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:45,598 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:45,601 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:45,604 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:45,606 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:45,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:09:45,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:09:45,635 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:45,636 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:45,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:09:45,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [520819677] [2021-02-23 18:09:45,641 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:09:45,641 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 18:09:45,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90633264] [2021-02-23 18:09:45,641 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 18:09:45,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:09:45,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 18:09:45,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 18:09:45,642 INFO L87 Difference]: Start difference. First operand 181 states and 193 transitions. Second operand 4 states. [2021-02-23 18:09:45,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:09:45,898 INFO L93 Difference]: Finished difference Result 187 states and 199 transitions. [2021-02-23 18:09:45,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 18:09:45,898 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2021-02-23 18:09:45,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:09:45,900 INFO L225 Difference]: With dead ends: 187 [2021-02-23 18:09:45,900 INFO L226 Difference]: Without dead ends: 182 [2021-02-23 18:09:45,900 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 [2021-02-23 18:09:45,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-02-23 18:09:45,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2021-02-23 18:09:45,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2021-02-23 18:09:45,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 194 transitions. [2021-02-23 18:09:45,926 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 194 transitions. Word has length 56 [2021-02-23 18:09:45,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:09:45,927 INFO L480 AbstractCegarLoop]: Abstraction has 182 states and 194 transitions. [2021-02-23 18:09:45,927 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 18:09:45,927 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 194 transitions. [2021-02-23 18:09:45,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-02-23 18:09:45,928 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:09:45,928 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:09:45,928 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-23 18:09:45,929 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]=== [2021-02-23 18:09:45,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:09:45,929 INFO L82 PathProgramCache]: Analyzing trace with hash -1815431908, now seen corresponding path program 1 times [2021-02-23 18:09:45,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:09:45,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1217569894] [2021-02-23 18:09:45,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:09:45,963 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:09:45,966 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:09:45,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:09:45,998 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:45,999 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:46,000 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:46,001 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-23 18:09:46,008 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:46,010 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-23 18:09:46,021 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:46,022 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-23 18:09:46,032 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:46,033 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:09:46,043 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:46,044 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:09:46,053 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:46,054 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:46,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:09:46,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:09:46,082 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:46,083 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:46,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:09:46,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1217569894] [2021-02-23 18:09:46,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:09:46,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-23 18:09:46,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585781832] [2021-02-23 18:09:46,098 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-23 18:09:46,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:09:46,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-23 18:09:46,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-02-23 18:09:46,099 INFO L87 Difference]: Start difference. First operand 182 states and 194 transitions. Second operand 8 states. [2021-02-23 18:09:46,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:09:46,580 INFO L93 Difference]: Finished difference Result 270 states and 289 transitions. [2021-02-23 18:09:46,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-23 18:09:46,581 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2021-02-23 18:09:46,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:09:46,583 INFO L225 Difference]: With dead ends: 270 [2021-02-23 18:09:46,583 INFO L226 Difference]: Without dead ends: 240 [2021-02-23 18:09:46,583 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 [2021-02-23 18:09:46,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2021-02-23 18:09:46,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 221. [2021-02-23 18:09:46,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2021-02-23 18:09:46,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 241 transitions. [2021-02-23 18:09:46,615 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 241 transitions. Word has length 57 [2021-02-23 18:09:46,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:09:46,616 INFO L480 AbstractCegarLoop]: Abstraction has 221 states and 241 transitions. [2021-02-23 18:09:46,616 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-23 18:09:46,616 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 241 transitions. [2021-02-23 18:09:46,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-02-23 18:09:46,617 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:09:46,617 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] [2021-02-23 18:09:46,617 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-02-23 18:09:46,617 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]=== [2021-02-23 18:09:46,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:09:46,618 INFO L82 PathProgramCache]: Analyzing trace with hash -1929887829, now seen corresponding path program 1 times [2021-02-23 18:09:46,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:09:46,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2025109346] [2021-02-23 18:09:46,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:09:46,622 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:09:46,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:09:46,724 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:46,725 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:46,725 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:46,727 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 18:09:46,732 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:46,733 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 18:09:46,740 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:46,740 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 18:09:46,749 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:46,750 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-23 18:09:46,763 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:46,764 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-02-23 18:09:46,781 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:46,782 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-23 18:09:46,792 WARN L141 QuantifierPusher]: treesize reduction 33, result has 56.0 percent of original size [2021-02-23 18:09:46,799 WARN L147 QuantifierPusher]: treesize reduction 33, result has 56.0 percent of original size 42 [2021-02-23 18:09:46,840 WARN L141 QuantifierPusher]: treesize reduction 19, result has 69.4 percent of original size [2021-02-23 18:09:46,840 WARN L147 QuantifierPusher]: treesize reduction 19, result has 69.4 percent of original size 43 [2021-02-23 18:09:46,866 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:46,868 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-02-23 18:09:46,887 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:46,889 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-23 18:09:46,909 WARN L141 QuantifierPusher]: treesize reduction 10, result has 68.8 percent of original size [2021-02-23 18:09:46,909 WARN L147 QuantifierPusher]: treesize reduction 10, result has 68.8 percent of original size 22 [2021-02-23 18:09:46,933 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:46,934 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:09:46,951 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:46,951 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:46,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:09:46,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:09:46,991 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:46,992 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:47,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:09:47,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2025109346] [2021-02-23 18:09:47,014 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:09:47,014 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-23 18:09:47,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755498244] [2021-02-23 18:09:47,015 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-23 18:09:47,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:09:47,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-23 18:09:47,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-02-23 18:09:47,016 INFO L87 Difference]: Start difference. First operand 221 states and 241 transitions. Second operand 14 states. [2021-02-23 18:09:48,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:09:48,889 INFO L93 Difference]: Finished difference Result 665 states and 719 transitions. [2021-02-23 18:09:48,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-02-23 18:09:48,889 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 57 [2021-02-23 18:09:48,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:09:48,893 INFO L225 Difference]: With dead ends: 665 [2021-02-23 18:09:48,893 INFO L226 Difference]: Without dead ends: 662 [2021-02-23 18:09:48,895 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=252, Invalid=804, Unknown=0, NotChecked=0, Total=1056 [2021-02-23 18:09:48,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2021-02-23 18:09:48,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 240. [2021-02-23 18:09:48,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2021-02-23 18:09:48,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 262 transitions. [2021-02-23 18:09:48,967 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 262 transitions. Word has length 57 [2021-02-23 18:09:48,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:09:48,967 INFO L480 AbstractCegarLoop]: Abstraction has 240 states and 262 transitions. [2021-02-23 18:09:48,967 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-23 18:09:48,967 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 262 transitions. [2021-02-23 18:09:48,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-02-23 18:09:48,968 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:09:48,969 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] [2021-02-23 18:09:48,969 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-02-23 18:09:48,969 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]=== [2021-02-23 18:09:48,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:09:48,970 INFO L82 PathProgramCache]: Analyzing trace with hash -963591574, now seen corresponding path program 1 times [2021-02-23 18:09:48,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:09:48,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [220534831] [2021-02-23 18:09:48,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:09:48,975 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:09:48,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:09:49,017 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:49,018 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:49,019 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:49,019 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-23 18:09:49,030 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:49,038 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-23 18:09:49,050 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:49,051 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-23 18:09:49,061 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:49,065 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:09:49,075 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:49,075 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:49,083 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:49,083 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:49,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:09:49,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:09:49,111 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:49,114 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:49,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:09:49,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [220534831] [2021-02-23 18:09:49,119 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:09:49,119 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-23 18:09:49,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836042809] [2021-02-23 18:09:49,120 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-23 18:09:49,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:09:49,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-23 18:09:49,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-02-23 18:09:49,121 INFO L87 Difference]: Start difference. First operand 240 states and 262 transitions. Second operand 8 states. [2021-02-23 18:09:49,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:09:49,630 INFO L93 Difference]: Finished difference Result 260 states and 284 transitions. [2021-02-23 18:09:49,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-23 18:09:49,631 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2021-02-23 18:09:49,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:09:49,633 INFO L225 Difference]: With dead ends: 260 [2021-02-23 18:09:49,633 INFO L226 Difference]: Without dead ends: 255 [2021-02-23 18:09:49,634 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2021-02-23 18:09:49,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2021-02-23 18:09:49,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 234. [2021-02-23 18:09:49,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2021-02-23 18:09:49,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 256 transitions. [2021-02-23 18:09:49,699 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 256 transitions. Word has length 58 [2021-02-23 18:09:49,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:09:49,699 INFO L480 AbstractCegarLoop]: Abstraction has 234 states and 256 transitions. [2021-02-23 18:09:49,699 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-23 18:09:49,700 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 256 transitions. [2021-02-23 18:09:49,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-02-23 18:09:49,700 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:09:49,701 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] [2021-02-23 18:09:49,701 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-02-23 18:09:49,701 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]=== [2021-02-23 18:09:49,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:09:49,701 INFO L82 PathProgramCache]: Analyzing trace with hash 450193912, now seen corresponding path program 1 times [2021-02-23 18:09:49,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:09:49,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [586067535] [2021-02-23 18:09:49,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:09:49,705 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:09:49,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:09:49,859 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:49,860 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:49,861 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:49,862 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 18:09:49,869 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:49,869 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 18:09:49,877 WARN L141 QuantifierPusher]: treesize reduction 9, result has 55.0 percent of original size [2021-02-23 18:09:49,878 WARN L147 QuantifierPusher]: treesize reduction 9, result has 55.0 percent of original size 11 [2021-02-23 18:09:49,888 WARN L141 QuantifierPusher]: treesize reduction 15, result has 60.5 percent of original size [2021-02-23 18:09:49,889 WARN L147 QuantifierPusher]: treesize reduction 15, result has 60.5 percent of original size 23 [2021-02-23 18:09:49,902 WARN L141 QuantifierPusher]: treesize reduction 9, result has 76.3 percent of original size [2021-02-23 18:09:49,903 WARN L147 QuantifierPusher]: treesize reduction 9, result has 76.3 percent of original size 29 [2021-02-23 18:09:49,923 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:49,924 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-02-23 18:09:49,948 WARN L141 QuantifierPusher]: treesize reduction 27, result has 69.0 percent of original size [2021-02-23 18:09:49,950 WARN L147 QuantifierPusher]: treesize reduction 27, result has 69.0 percent of original size 60 [2021-02-23 18:09:49,994 WARN L141 QuantifierPusher]: treesize reduction 15, result has 72.2 percent of original size [2021-02-23 18:09:49,995 WARN L147 QuantifierPusher]: treesize reduction 15, result has 72.2 percent of original size 39 [2021-02-23 18:09:50,015 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:50,015 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-02-23 18:09:50,035 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:50,036 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-23 18:09:50,057 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:50,058 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-23 18:09:50,083 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:50,083 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:09:50,104 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:50,104 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:50,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:09:50,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:09:50,150 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:50,151 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:50,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:09:50,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [586067535] [2021-02-23 18:09:50,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:09:50,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-23 18:09:50,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141190147] [2021-02-23 18:09:50,174 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-23 18:09:50,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:09:50,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-23 18:09:50,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2021-02-23 18:09:50,175 INFO L87 Difference]: Start difference. First operand 234 states and 256 transitions. Second operand 15 states. [2021-02-23 18:09:52,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:09:52,131 INFO L93 Difference]: Finished difference Result 650 states and 704 transitions. [2021-02-23 18:09:52,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-02-23 18:09:52,131 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 61 [2021-02-23 18:09:52,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:09:52,135 INFO L225 Difference]: With dead ends: 650 [2021-02-23 18:09:52,135 INFO L226 Difference]: Without dead ends: 647 [2021-02-23 18:09:52,136 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=272, Invalid=850, Unknown=0, NotChecked=0, Total=1122 [2021-02-23 18:09:52,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2021-02-23 18:09:52,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 238. [2021-02-23 18:09:52,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2021-02-23 18:09:52,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 260 transitions. [2021-02-23 18:09:52,188 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 260 transitions. Word has length 61 [2021-02-23 18:09:52,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:09:52,188 INFO L480 AbstractCegarLoop]: Abstraction has 238 states and 260 transitions. [2021-02-23 18:09:52,188 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-02-23 18:09:52,188 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 260 transitions. [2021-02-23 18:09:52,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-02-23 18:09:52,189 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:09:52,189 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] [2021-02-23 18:09:52,190 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-02-23 18:09:52,190 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]=== [2021-02-23 18:09:52,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:09:52,190 INFO L82 PathProgramCache]: Analyzing trace with hash 1797611805, now seen corresponding path program 1 times [2021-02-23 18:09:52,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:09:52,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [334673185] [2021-02-23 18:09:52,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:09:52,196 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:09:52,199 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:09:52,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:09:52,222 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:52,222 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:52,223 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:52,224 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 18:09:52,229 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:52,230 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:52,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:09:52,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:09:52,251 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:52,251 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:52,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:09:52,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [334673185] [2021-02-23 18:09:52,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:09:52,255 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 18:09:52,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082384316] [2021-02-23 18:09:52,256 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 18:09:52,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:09:52,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 18:09:52,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 18:09:52,257 INFO L87 Difference]: Start difference. First operand 238 states and 260 transitions. Second operand 4 states. [2021-02-23 18:09:52,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:09:52,591 INFO L93 Difference]: Finished difference Result 243 states and 265 transitions. [2021-02-23 18:09:52,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 18:09:52,591 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2021-02-23 18:09:52,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:09:52,593 INFO L225 Difference]: With dead ends: 243 [2021-02-23 18:09:52,593 INFO L226 Difference]: Without dead ends: 241 [2021-02-23 18:09:52,594 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 [2021-02-23 18:09:52,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2021-02-23 18:09:52,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 236. [2021-02-23 18:09:52,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2021-02-23 18:09:52,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 258 transitions. [2021-02-23 18:09:52,638 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 258 transitions. Word has length 62 [2021-02-23 18:09:52,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:09:52,639 INFO L480 AbstractCegarLoop]: Abstraction has 236 states and 258 transitions. [2021-02-23 18:09:52,639 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 18:09:52,639 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 258 transitions. [2021-02-23 18:09:52,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-02-23 18:09:52,640 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:09:52,640 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] [2021-02-23 18:09:52,640 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-02-23 18:09:52,641 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]=== [2021-02-23 18:09:52,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:09:52,641 INFO L82 PathProgramCache]: Analyzing trace with hash -23328119, now seen corresponding path program 1 times [2021-02-23 18:09:52,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:09:52,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1658687828] [2021-02-23 18:09:52,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:09:52,650 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:09:52,653 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:09:52,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:09:52,683 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:52,684 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:52,685 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:52,685 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-23 18:09:52,694 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:52,695 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-23 18:09:52,698 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:52,698 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-23 18:09:52,705 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:52,705 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:09:52,713 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:52,713 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:09:52,722 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:52,722 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:52,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:09:52,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:09:52,746 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:52,747 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:52,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:09:52,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1658687828] [2021-02-23 18:09:52,762 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:09:52,762 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-23 18:09:52,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544605523] [2021-02-23 18:09:52,762 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-23 18:09:52,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:09:52,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-23 18:09:52,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-02-23 18:09:52,763 INFO L87 Difference]: Start difference. First operand 236 states and 258 transitions. Second operand 7 states. [2021-02-23 18:09:53,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:09:53,258 INFO L93 Difference]: Finished difference Result 387 states and 421 transitions. [2021-02-23 18:09:53,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-23 18:09:53,259 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 63 [2021-02-23 18:09:53,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:09:53,261 INFO L225 Difference]: With dead ends: 387 [2021-02-23 18:09:53,261 INFO L226 Difference]: Without dead ends: 278 [2021-02-23 18:09:53,262 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 [2021-02-23 18:09:53,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2021-02-23 18:09:53,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 236. [2021-02-23 18:09:53,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2021-02-23 18:09:53,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 256 transitions. [2021-02-23 18:09:53,326 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 256 transitions. Word has length 63 [2021-02-23 18:09:53,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:09:53,327 INFO L480 AbstractCegarLoop]: Abstraction has 236 states and 256 transitions. [2021-02-23 18:09:53,327 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-23 18:09:53,327 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 256 transitions. [2021-02-23 18:09:53,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-02-23 18:09:53,328 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:09:53,328 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] [2021-02-23 18:09:53,328 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-02-23 18:09:53,329 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]=== [2021-02-23 18:09:53,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:09:53,329 INFO L82 PathProgramCache]: Analyzing trace with hash -1294737916, now seen corresponding path program 1 times [2021-02-23 18:09:53,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:09:53,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1444644203] [2021-02-23 18:09:53,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:09:53,335 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:09:53,337 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:09:53,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:09:53,374 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:53,375 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:53,376 WARN L141 QuantifierPusher]: treesize reduction 4, result has 86.7 percent of original size [2021-02-23 18:09:53,376 WARN L147 QuantifierPusher]: treesize reduction 4, result has 86.7 percent of original size 26 [2021-02-23 18:09:53,395 WARN L141 QuantifierPusher]: treesize reduction 4, result has 95.9 percent of original size [2021-02-23 18:09:53,396 WARN L147 QuantifierPusher]: treesize reduction 4, result has 95.9 percent of original size 94 [2021-02-23 18:09:53,432 WARN L141 QuantifierPusher]: treesize reduction 4, result has 95.9 percent of original size [2021-02-23 18:09:53,433 WARN L147 QuantifierPusher]: treesize reduction 4, result has 95.9 percent of original size 94 [2021-02-23 18:09:53,477 WARN L141 QuantifierPusher]: treesize reduction 4, result has 95.9 percent of original size [2021-02-23 18:09:53,478 WARN L147 QuantifierPusher]: treesize reduction 4, result has 95.9 percent of original size 94 [2021-02-23 18:09:53,517 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:53,518 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-23 18:09:53,527 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:53,528 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:09:53,537 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:53,538 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:09:53,548 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:53,548 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:53,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:09:53,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:09:53,578 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:53,578 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:53,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:09:53,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1444644203] [2021-02-23 18:09:53,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:09:53,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-23 18:09:53,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515501103] [2021-02-23 18:09:53,590 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-23 18:09:53,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:09:53,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-23 18:09:53,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-02-23 18:09:53,591 INFO L87 Difference]: Start difference. First operand 236 states and 256 transitions. Second operand 10 states. [2021-02-23 18:09:54,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:09:54,369 INFO L93 Difference]: Finished difference Result 500 states and 541 transitions. [2021-02-23 18:09:54,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-23 18:09:54,369 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 66 [2021-02-23 18:09:54,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:09:54,372 INFO L225 Difference]: With dead ends: 500 [2021-02-23 18:09:54,372 INFO L226 Difference]: Without dead ends: 430 [2021-02-23 18:09:54,372 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 [2021-02-23 18:09:54,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2021-02-23 18:09:54,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 322. [2021-02-23 18:09:54,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 322 states. [2021-02-23 18:09:54,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 355 transitions. [2021-02-23 18:09:54,444 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 355 transitions. Word has length 66 [2021-02-23 18:09:54,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:09:54,445 INFO L480 AbstractCegarLoop]: Abstraction has 322 states and 355 transitions. [2021-02-23 18:09:54,445 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-23 18:09:54,445 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 355 transitions. [2021-02-23 18:09:54,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-02-23 18:09:54,446 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:09:54,446 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] [2021-02-23 18:09:54,446 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-02-23 18:09:54,447 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]=== [2021-02-23 18:09:54,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:09:54,447 INFO L82 PathProgramCache]: Analyzing trace with hash 1944566536, now seen corresponding path program 1 times [2021-02-23 18:09:54,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:09:54,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1835381982] [2021-02-23 18:09:54,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:09:54,449 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:09:54,451 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:09:54,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:09:54,473 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:54,473 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:54,474 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:54,474 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:09:54,477 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:54,478 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:54,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:09:54,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:09:54,500 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:54,500 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:54,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:09:54,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1835381982] [2021-02-23 18:09:54,505 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:09:54,505 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 18:09:54,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990253746] [2021-02-23 18:09:54,505 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 18:09:54,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:09:54,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 18:09:54,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 18:09:54,506 INFO L87 Difference]: Start difference. First operand 322 states and 355 transitions. Second operand 4 states. [2021-02-23 18:09:54,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:09:54,915 INFO L93 Difference]: Finished difference Result 568 states and 640 transitions. [2021-02-23 18:09:54,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 18:09:54,915 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 68 [2021-02-23 18:09:54,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:09:54,919 INFO L225 Difference]: With dead ends: 568 [2021-02-23 18:09:54,919 INFO L226 Difference]: Without dead ends: 432 [2021-02-23 18:09:54,920 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 [2021-02-23 18:09:54,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2021-02-23 18:09:55,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 371. [2021-02-23 18:09:55,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 371 states. [2021-02-23 18:09:55,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 413 transitions. [2021-02-23 18:09:55,049 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 413 transitions. Word has length 68 [2021-02-23 18:09:55,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:09:55,049 INFO L480 AbstractCegarLoop]: Abstraction has 371 states and 413 transitions. [2021-02-23 18:09:55,049 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 18:09:55,050 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 413 transitions. [2021-02-23 18:09:55,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-02-23 18:09:55,051 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:09:55,051 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] [2021-02-23 18:09:55,051 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-02-23 18:09:55,051 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]=== [2021-02-23 18:09:55,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:09:55,052 INFO L82 PathProgramCache]: Analyzing trace with hash -836770595, now seen corresponding path program 1 times [2021-02-23 18:09:55,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:09:55,052 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1957896592] [2021-02-23 18:09:55,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:09:55,057 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:09:55,059 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:09:55,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:09:55,092 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:55,093 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:55,094 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:55,095 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-02-23 18:09:55,126 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:55,126 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-23 18:09:55,134 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:55,135 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-23 18:09:55,144 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:55,144 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-23 18:09:55,154 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:55,155 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:09:55,165 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:55,165 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:09:55,177 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:55,178 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:09:55,191 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:55,191 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:55,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:09:55,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:09:55,221 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:55,222 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:55,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:09:55,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1957896592] [2021-02-23 18:09:55,236 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:09:55,236 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-23 18:09:55,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066581875] [2021-02-23 18:09:55,237 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-23 18:09:55,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:09:55,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-23 18:09:55,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-02-23 18:09:55,238 INFO L87 Difference]: Start difference. First operand 371 states and 413 transitions. Second operand 10 states. [2021-02-23 18:09:56,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:09:56,234 INFO L93 Difference]: Finished difference Result 610 states and 676 transitions. [2021-02-23 18:09:56,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-23 18:09:56,235 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 71 [2021-02-23 18:09:56,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:09:56,238 INFO L225 Difference]: With dead ends: 610 [2021-02-23 18:09:56,239 INFO L226 Difference]: Without dead ends: 550 [2021-02-23 18:09:56,240 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 [2021-02-23 18:09:56,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2021-02-23 18:09:56,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 418. [2021-02-23 18:09:56,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418 states. [2021-02-23 18:09:56,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 468 transitions. [2021-02-23 18:09:56,423 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 468 transitions. Word has length 71 [2021-02-23 18:09:56,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:09:56,424 INFO L480 AbstractCegarLoop]: Abstraction has 418 states and 468 transitions. [2021-02-23 18:09:56,424 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-23 18:09:56,424 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 468 transitions. [2021-02-23 18:09:56,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-02-23 18:09:56,426 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:09:56,426 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] [2021-02-23 18:09:56,426 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-02-23 18:09:56,428 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]=== [2021-02-23 18:09:56,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:09:56,429 INFO L82 PathProgramCache]: Analyzing trace with hash -1109198014, now seen corresponding path program 1 times [2021-02-23 18:09:56,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:09:56,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [77399614] [2021-02-23 18:09:56,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:09:56,442 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:09:56,445 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:09:56,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 18:09:56,473 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 18:09:56,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 18:09:56,500 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 18:09:56,556 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 18:09:56,556 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 18:09:56,558 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-02-23 18:09:56,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 06:09:56 BoogieIcfgContainer [2021-02-23 18:09:56,581 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 18:09:56,582 INFO L168 Benchmark]: Toolchain (without parser) took 18111.52 ms. Allocated memory was 151.0 MB in the beginning and 325.1 MB in the end (delta: 174.1 MB). Free memory was 125.0 MB in the beginning and 235.6 MB in the end (delta: -110.6 MB). Peak memory consumption was 64.0 MB. Max. memory is 8.0 GB. [2021-02-23 18:09:56,582 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory was 126.2 MB in the beginning and 126.2 MB in the end (delta: 99.8 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 18:09:56,583 INFO L168 Benchmark]: CACSL2BoogieTranslator took 508.91 ms. Allocated memory is still 151.0 MB. Free memory was 123.8 MB in the beginning and 99.4 MB in the end (delta: 24.4 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. [2021-02-23 18:09:56,583 INFO L168 Benchmark]: Boogie Preprocessor took 89.50 ms. Allocated memory is still 151.0 MB. Free memory was 99.4 MB in the beginning and 96.2 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-02-23 18:09:56,583 INFO L168 Benchmark]: RCFGBuilder took 1185.78 ms. Allocated memory is still 151.0 MB. Free memory was 96.2 MB in the beginning and 78.4 MB in the end (delta: 17.8 MB). Peak memory consumption was 18.8 MB. Max. memory is 8.0 GB. [2021-02-23 18:09:56,584 INFO L168 Benchmark]: TraceAbstraction took 16306.10 ms. Allocated memory was 151.0 MB in the beginning and 325.1 MB in the end (delta: 174.1 MB). Free memory was 77.9 MB in the beginning and 235.6 MB in the end (delta: -157.7 MB). Peak memory consumption was 15.8 MB. Max. memory is 8.0 GB. [2021-02-23 18:09:56,585 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory was 126.2 MB in the beginning and 126.2 MB in the end (delta: 99.8 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 508.91 ms. Allocated memory is still 151.0 MB. Free memory was 123.8 MB in the beginning and 99.4 MB in the end (delta: 24.4 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 89.50 ms. Allocated memory is still 151.0 MB. Free memory was 99.4 MB in the beginning and 96.2 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1185.78 ms. Allocated memory is still 151.0 MB. Free memory was 96.2 MB in the beginning and 78.4 MB in the end (delta: 17.8 MB). Peak memory consumption was 18.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 16306.10 ms. Allocated memory was 151.0 MB in the beginning and 325.1 MB in the end (delta: 174.1 MB). Free memory was 77.9 MB in the beginning and 235.6 MB in the end (delta: -157.7 MB). Peak memory consumption was 15.8 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: 16.2s, OverallIterations: 20, TraceHistogramMax: 2, AutomataDifference: 11.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3247 SDtfs, 5018 SDslu, 9916 SDs, 0 SdLazy, 6732 SolverSat, 220 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 256 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 3.7s 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, 1740 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...