/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/forester-heap/sll-01-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-22 02:00:49,785 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 02:00:49,789 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 02:00:49,848 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-22 02:00:49,849 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-22 02:00:49,853 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-22 02:00:49,857 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-22 02:00:49,865 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-22 02:00:49,868 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-22 02:00:49,874 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-22 02:00:49,875 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-22 02:00:49,877 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-22 02:00:49,878 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-22 02:00:49,880 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-22 02:00:49,882 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-22 02:00:49,884 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-22 02:00:49,887 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-22 02:00:49,888 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-22 02:00:49,896 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-22 02:00:49,905 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-22 02:00:49,907 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-22 02:00:49,909 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-22 02:00:49,910 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-22 02:00:49,913 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-22 02:00:49,922 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-22 02:00:49,922 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-22 02:00:49,923 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-22 02:00:49,925 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-22 02:00:49,926 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-22 02:00:49,927 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-22 02:00:49,927 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-22 02:00:49,928 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-22 02:00:49,930 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-22 02:00:49,931 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-22 02:00:49,932 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-22 02:00:49,932 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-22 02:00:49,933 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-22 02:00:49,933 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-22 02:00:49,934 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-22 02:00:49,935 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-22 02:00:49,935 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-22 02:00:49,936 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-22 02:00:49,963 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 02:00:49,963 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 02:00:49,968 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 02:00:49,968 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 02:00:49,969 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 02:00:49,969 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 02:00:49,969 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 02:00:49,969 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 02:00:49,969 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 02:00:49,970 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 02:00:49,971 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 02:00:49,971 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 02:00:49,971 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 02:00:49,972 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 02:00:49,972 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 02:00:49,972 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 02:00:49,972 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 02:00:49,973 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 02:00:49,973 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 02:00:49,975 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 02:00:49,975 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 02:00:49,976 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 02:00:49,976 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 02:00:49,976 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 02:00:50,411 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 02:00:50,441 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 02:00:50,444 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 02:00:50,445 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 02:00:50,448 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 02:00:50,449 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-01-2.i [2021-02-22 02:00:50,546 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/789cd188a/ffeeaadf71a3470097f3d61f6bbaafc6/FLAG043bf1922 [2021-02-22 02:00:51,223 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 02:00:51,223 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-01-2.i [2021-02-22 02:00:51,250 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/789cd188a/ffeeaadf71a3470097f3d61f6bbaafc6/FLAG043bf1922 [2021-02-22 02:00:51,510 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/789cd188a/ffeeaadf71a3470097f3d61f6bbaafc6 [2021-02-22 02:00:51,513 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 02:00:51,525 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 02:00:51,528 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 02:00:51,528 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 02:00:51,532 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 02:00:51,533 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 02:00:51" (1/1) ... [2021-02-22 02:00:51,534 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6313690b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:00:51, skipping insertion in model container [2021-02-22 02:00:51,535 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 02:00:51" (1/1) ... [2021-02-22 02:00:51,544 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 02:00:51,623 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 02:00:52,039 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] [2021-02-22 02:00:52,061 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] [2021-02-22 02:00:52,064 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-01-2.i[22516,22529] [2021-02-22 02:00:52,066 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] [2021-02-22 02:00:52,071 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] [2021-02-22 02:00:52,073 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] [2021-02-22 02:00:52,079 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] [2021-02-22 02:00:52,083 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-01-2.i[23272,23285] [2021-02-22 02:00:52,085 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-01-2.i[23351,23364] [2021-02-22 02:00:52,087 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-01-2.i[23484,23497] [2021-02-22 02:00:52,090 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-01-2.i[23662,23675] [2021-02-22 02:00:52,095 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] [2021-02-22 02:00:52,097 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] [2021-02-22 02:00:52,108 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 02:00:52,120 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 02:00:52,181 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] [2021-02-22 02:00:52,184 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] [2021-02-22 02:00:52,186 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] [2021-02-22 02:00:52,187 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] [2021-02-22 02:00:52,189 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] [2021-02-22 02:00:52,190 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] [2021-02-22 02:00:52,192 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] [2021-02-22 02:00:52,193 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] [2021-02-22 02:00:52,194 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] [2021-02-22 02:00:52,195 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] [2021-02-22 02:00:52,197 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] [2021-02-22 02:00:52,198 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] [2021-02-22 02:00:52,199 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] [2021-02-22 02:00:52,201 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 02:00:52,256 INFO L208 MainTranslator]: Completed translation [2021-02-22 02:00:52,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:00:52 WrapperNode [2021-02-22 02:00:52,257 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 02:00:52,258 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 02:00:52,258 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 02:00:52,258 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 02:00:52,272 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:00:52" (1/1) ... [2021-02-22 02:00:52,272 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:00:52" (1/1) ... [2021-02-22 02:00:52,288 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:00:52" (1/1) ... [2021-02-22 02:00:52,289 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:00:52" (1/1) ... [2021-02-22 02:00:52,330 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:00:52" (1/1) ... [2021-02-22 02:00:52,346 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:00:52" (1/1) ... [2021-02-22 02:00:52,374 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:00:52" (1/1) ... [2021-02-22 02:00:52,390 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 02:00:52,396 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 02:00:52,396 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 02:00:52,396 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 02:00:52,398 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:00:52" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 02:00:52,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 02:00:52,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 02:00:52,500 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 02:00:52,501 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 02:00:52,501 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-02-22 02:00:52,501 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-02-22 02:00:52,501 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-02-22 02:00:52,501 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-02-22 02:00:52,501 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-02-22 02:00:52,501 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-02-22 02:00:52,501 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-02-22 02:00:52,502 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-02-22 02:00:52,502 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-02-22 02:00:52,502 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-02-22 02:00:52,502 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-02-22 02:00:52,502 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-02-22 02:00:52,502 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-02-22 02:00:52,503 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-02-22 02:00:52,505 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-02-22 02:00:52,505 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-02-22 02:00:52,505 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-02-22 02:00:52,505 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-02-22 02:00:52,506 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-02-22 02:00:52,506 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-02-22 02:00:52,506 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-02-22 02:00:52,506 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-02-22 02:00:52,506 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-02-22 02:00:52,506 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-02-22 02:00:52,506 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-02-22 02:00:52,507 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-02-22 02:00:52,507 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-02-22 02:00:52,507 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-02-22 02:00:52,507 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-02-22 02:00:52,507 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-02-22 02:00:52,507 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-02-22 02:00:52,508 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-02-22 02:00:52,509 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-02-22 02:00:52,509 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-02-22 02:00:52,509 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-02-22 02:00:52,509 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-02-22 02:00:52,509 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-02-22 02:00:52,509 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-02-22 02:00:52,510 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-02-22 02:00:52,510 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-02-22 02:00:52,510 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-02-22 02:00:52,510 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-02-22 02:00:52,510 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-02-22 02:00:52,511 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-02-22 02:00:52,511 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-02-22 02:00:52,511 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-02-22 02:00:52,511 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-02-22 02:00:52,512 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-02-22 02:00:52,512 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-02-22 02:00:52,513 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-02-22 02:00:52,513 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-22 02:00:52,513 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-02-22 02:00:52,514 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-02-22 02:00:52,515 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-22 02:00:52,515 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-02-22 02:00:52,516 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-02-22 02:00:52,516 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-02-22 02:00:52,517 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-02-22 02:00:52,517 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-02-22 02:00:52,518 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 02:00:52,518 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-02-22 02:00:52,518 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-02-22 02:00:52,518 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-02-22 02:00:52,519 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-02-22 02:00:52,519 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-02-22 02:00:52,519 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-02-22 02:00:52,520 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-02-22 02:00:52,520 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-02-22 02:00:52,520 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-02-22 02:00:52,520 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-02-22 02:00:52,520 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-02-22 02:00:52,520 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-02-22 02:00:52,521 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-02-22 02:00:52,521 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-02-22 02:00:52,521 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-02-22 02:00:52,521 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-02-22 02:00:52,521 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-02-22 02:00:52,521 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-02-22 02:00:52,521 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-02-22 02:00:52,522 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-02-22 02:00:52,522 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-02-22 02:00:52,522 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-02-22 02:00:52,522 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-02-22 02:00:52,522 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-02-22 02:00:52,522 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-02-22 02:00:52,522 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-02-22 02:00:52,522 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-02-22 02:00:52,523 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-02-22 02:00:52,523 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-02-22 02:00:52,523 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-02-22 02:00:52,523 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-02-22 02:00:52,523 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-02-22 02:00:52,523 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-02-22 02:00:52,523 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-02-22 02:00:52,524 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-02-22 02:00:52,524 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-02-22 02:00:52,525 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-02-22 02:00:52,525 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-02-22 02:00:52,526 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-02-22 02:00:52,526 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-02-22 02:00:52,526 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-02-22 02:00:52,526 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-02-22 02:00:52,526 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-02-22 02:00:52,526 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-22 02:00:52,526 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 02:00:52,526 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-22 02:00:52,527 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-22 02:00:52,527 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 02:00:52,527 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 02:00:52,528 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 02:00:52,528 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-22 02:00:52,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-22 02:00:52,528 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-22 02:00:52,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 02:00:52,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 02:00:52,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 02:00:52,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 02:00:52,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 02:00:52,533 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 02:00:53,256 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 02:00:53,256 INFO L299 CfgBuilder]: Removed 30 assume(true) statements. [2021-02-22 02:00:53,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 02:00:53 BoogieIcfgContainer [2021-02-22 02:00:53,259 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 02:00:53,261 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 02:00:53,261 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 02:00:53,265 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 02:00:53,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 02:00:51" (1/3) ... [2021-02-22 02:00:53,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@282469c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 02:00:53, skipping insertion in model container [2021-02-22 02:00:53,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:00:52" (2/3) ... [2021-02-22 02:00:53,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@282469c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 02:00:53, skipping insertion in model container [2021-02-22 02:00:53,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 02:00:53" (3/3) ... [2021-02-22 02:00:53,270 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-01-2.i [2021-02-22 02:00:53,279 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 02:00:53,288 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2021-02-22 02:00:53,312 INFO L253 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2021-02-22 02:00:53,339 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 02:00:53,339 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 02:00:53,339 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 02:00:53,340 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 02:00:53,340 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 02:00:53,340 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 02:00:53,340 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 02:00:53,340 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 02:00:53,366 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states. [2021-02-22 02:00:53,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-02-22 02:00:53,376 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:00:53,377 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 02:00:53,378 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]=== [2021-02-22 02:00:53,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:00:53,385 INFO L82 PathProgramCache]: Analyzing trace with hash 686903667, now seen corresponding path program 1 times [2021-02-22 02:00:53,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:00:53,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1406972941] [2021-02-22 02:00:53,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:00:53,497 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:00:53,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:00:53,624 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:00:53,626 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:00:53,627 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:00:53,627 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 02:00:53,639 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:00:53,640 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 02:00:53,645 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:00:53,646 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:00:53,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:00:53,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:00:53,684 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:00:53,685 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:00:53,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 02:00:53,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1406972941] [2021-02-22 02:00:53,694 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:00:53,694 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-22 02:00:53,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830097926] [2021-02-22 02:00:53,700 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-22 02:00:53,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:00:53,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-22 02:00:53,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-22 02:00:53,720 INFO L87 Difference]: Start difference. First operand 188 states. Second operand 5 states. [2021-02-22 02:00:54,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:00:54,295 INFO L93 Difference]: Finished difference Result 377 states and 495 transitions. [2021-02-22 02:00:54,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-22 02:00:54,299 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2021-02-22 02:00:54,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:00:54,315 INFO L225 Difference]: With dead ends: 377 [2021-02-22 02:00:54,317 INFO L226 Difference]: Without dead ends: 198 [2021-02-22 02:00:54,326 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 [2021-02-22 02:00:54,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-02-22 02:00:54,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 168. [2021-02-22 02:00:54,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2021-02-22 02:00:54,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 178 transitions. [2021-02-22 02:00:54,418 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 178 transitions. Word has length 16 [2021-02-22 02:00:54,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:00:54,418 INFO L480 AbstractCegarLoop]: Abstraction has 168 states and 178 transitions. [2021-02-22 02:00:54,419 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-22 02:00:54,419 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 178 transitions. [2021-02-22 02:00:54,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-02-22 02:00:54,420 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:00:54,420 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] [2021-02-22 02:00:54,421 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 02:00:54,421 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]=== [2021-02-22 02:00:54,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:00:54,423 INFO L82 PathProgramCache]: Analyzing trace with hash -1562484955, now seen corresponding path program 1 times [2021-02-22 02:00:54,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:00:54,423 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2081315012] [2021-02-22 02:00:54,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:00:54,442 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:00:54,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:00:54,547 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:00:54,549 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:00:54,550 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:00:54,552 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:00:54,555 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:00:54,556 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:00:54,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:00:54,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:00:54,587 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:00:54,587 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:00:54,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 02:00:54,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2081315012] [2021-02-22 02:00:54,593 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:00:54,594 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-22 02:00:54,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050754317] [2021-02-22 02:00:54,595 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-22 02:00:54,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:00:54,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-22 02:00:54,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-22 02:00:54,596 INFO L87 Difference]: Start difference. First operand 168 states and 178 transitions. Second operand 4 states. [2021-02-22 02:00:54,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:00:54,884 INFO L93 Difference]: Finished difference Result 174 states and 184 transitions. [2021-02-22 02:00:54,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-22 02:00:54,885 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2021-02-22 02:00:54,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:00:54,887 INFO L225 Difference]: With dead ends: 174 [2021-02-22 02:00:54,887 INFO L226 Difference]: Without dead ends: 169 [2021-02-22 02:00:54,888 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 [2021-02-22 02:00:54,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-02-22 02:00:54,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2021-02-22 02:00:54,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2021-02-22 02:00:54,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 179 transitions. [2021-02-22 02:00:54,910 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 179 transitions. Word has length 28 [2021-02-22 02:00:54,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:00:54,911 INFO L480 AbstractCegarLoop]: Abstraction has 169 states and 179 transitions. [2021-02-22 02:00:54,911 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-22 02:00:54,911 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 179 transitions. [2021-02-22 02:00:54,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-02-22 02:00:54,912 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:00:54,912 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] [2021-02-22 02:00:54,912 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-22 02:00:54,913 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]=== [2021-02-22 02:00:54,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:00:54,913 INFO L82 PathProgramCache]: Analyzing trace with hash 593562178, now seen corresponding path program 1 times [2021-02-22 02:00:54,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:00:54,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [536198392] [2021-02-22 02:00:54,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:00:54,919 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:00:54,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:00:54,958 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:00:54,959 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:00:54,970 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:00:54,971 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-22 02:00:54,982 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:00:54,983 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-22 02:00:54,997 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:00:54,998 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-22 02:00:55,015 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:00:55,016 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 02:00:55,026 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:00:55,027 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:00:55,036 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:00:55,037 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:00:55,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:00:55,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:00:55,072 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:00:55,072 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:00:55,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 02:00:55,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [536198392] [2021-02-22 02:00:55,076 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:00:55,076 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-22 02:00:55,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223326480] [2021-02-22 02:00:55,077 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-22 02:00:55,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:00:55,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-22 02:00:55,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-02-22 02:00:55,078 INFO L87 Difference]: Start difference. First operand 169 states and 179 transitions. Second operand 8 states. [2021-02-22 02:00:55,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:00:55,643 INFO L93 Difference]: Finished difference Result 262 states and 279 transitions. [2021-02-22 02:00:55,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-22 02:00:55,644 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2021-02-22 02:00:55,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:00:55,646 INFO L225 Difference]: With dead ends: 262 [2021-02-22 02:00:55,646 INFO L226 Difference]: Without dead ends: 257 [2021-02-22 02:00:55,647 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2021-02-22 02:00:55,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2021-02-22 02:00:55,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 163. [2021-02-22 02:00:55,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2021-02-22 02:00:55,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 173 transitions. [2021-02-22 02:00:55,672 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 173 transitions. Word has length 30 [2021-02-22 02:00:55,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:00:55,672 INFO L480 AbstractCegarLoop]: Abstraction has 163 states and 173 transitions. [2021-02-22 02:00:55,672 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-22 02:00:55,673 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 173 transitions. [2021-02-22 02:00:55,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-02-22 02:00:55,674 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:00:55,674 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] [2021-02-22 02:00:55,674 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-22 02:00:55,674 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]=== [2021-02-22 02:00:55,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:00:55,675 INFO L82 PathProgramCache]: Analyzing trace with hash -2077510696, now seen corresponding path program 1 times [2021-02-22 02:00:55,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:00:55,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [533427992] [2021-02-22 02:00:55,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:00:55,680 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:00:55,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:00:55,714 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:00:55,715 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:00:55,716 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:00:55,717 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-22 02:00:55,724 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:00:55,725 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 02:00:55,732 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:00:55,733 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-02-22 02:00:55,739 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:00:55,739 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:00:55,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:00:55,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:00:55,769 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:00:55,770 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:00:55,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 02:00:55,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [533427992] [2021-02-22 02:00:55,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:00:55,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-22 02:00:55,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313901126] [2021-02-22 02:00:55,774 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-22 02:00:55,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:00:55,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-22 02:00:55,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-22 02:00:55,775 INFO L87 Difference]: Start difference. First operand 163 states and 173 transitions. Second operand 6 states. [2021-02-22 02:00:56,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:00:56,174 INFO L93 Difference]: Finished difference Result 386 states and 411 transitions. [2021-02-22 02:00:56,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-22 02:00:56,175 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2021-02-22 02:00:56,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:00:56,176 INFO L225 Difference]: With dead ends: 386 [2021-02-22 02:00:56,177 INFO L226 Difference]: Without dead ends: 257 [2021-02-22 02:00:56,178 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 [2021-02-22 02:00:56,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2021-02-22 02:00:56,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 166. [2021-02-22 02:00:56,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2021-02-22 02:00:56,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 176 transitions. [2021-02-22 02:00:56,201 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 176 transitions. Word has length 36 [2021-02-22 02:00:56,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:00:56,201 INFO L480 AbstractCegarLoop]: Abstraction has 166 states and 176 transitions. [2021-02-22 02:00:56,201 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-22 02:00:56,201 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 176 transitions. [2021-02-22 02:00:56,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-02-22 02:00:56,203 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:00:56,203 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] [2021-02-22 02:00:56,203 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-22 02:00:56,203 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]=== [2021-02-22 02:00:56,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:00:56,204 INFO L82 PathProgramCache]: Analyzing trace with hash -460066315, now seen corresponding path program 1 times [2021-02-22 02:00:56,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:00:56,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [483599923] [2021-02-22 02:00:56,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:00:56,208 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:00:56,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:00:56,277 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:00:56,279 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:00:56,280 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:00:56,280 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 02:00:56,283 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:00:56,284 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 02:00:56,288 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:00:56,289 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 02:00:56,294 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:00:56,294 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:00:56,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:00:56,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:00:56,322 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:00:56,323 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:00:56,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 02:00:56,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [483599923] [2021-02-22 02:00:56,327 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:00:56,327 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-22 02:00:56,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081219533] [2021-02-22 02:00:56,327 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-22 02:00:56,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:00:56,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-22 02:00:56,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-22 02:00:56,328 INFO L87 Difference]: Start difference. First operand 166 states and 176 transitions. Second operand 6 states. [2021-02-22 02:00:56,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:00:56,706 INFO L93 Difference]: Finished difference Result 275 states and 292 transitions. [2021-02-22 02:00:56,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-22 02:00:56,707 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2021-02-22 02:00:56,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:00:56,709 INFO L225 Difference]: With dead ends: 275 [2021-02-22 02:00:56,709 INFO L226 Difference]: Without dead ends: 243 [2021-02-22 02:00:56,710 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 [2021-02-22 02:00:56,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2021-02-22 02:00:56,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 165. [2021-02-22 02:00:56,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2021-02-22 02:00:56,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 175 transitions. [2021-02-22 02:00:56,732 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 175 transitions. Word has length 38 [2021-02-22 02:00:56,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:00:56,732 INFO L480 AbstractCegarLoop]: Abstraction has 165 states and 175 transitions. [2021-02-22 02:00:56,732 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-22 02:00:56,733 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 175 transitions. [2021-02-22 02:00:56,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-02-22 02:00:56,734 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:00:56,734 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] [2021-02-22 02:00:56,734 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-22 02:00:56,734 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]=== [2021-02-22 02:00:56,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:00:56,735 INFO L82 PathProgramCache]: Analyzing trace with hash -1798842793, now seen corresponding path program 1 times [2021-02-22 02:00:56,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:00:56,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [714971227] [2021-02-22 02:00:56,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:00:56,739 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:00:56,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:00:56,781 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:00:56,782 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:00:56,783 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:00:56,783 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 02:00:56,787 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:00:56,787 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-22 02:00:56,792 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:00:56,793 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 02:00:56,798 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:00:56,798 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 02:00:56,804 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:00:56,806 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:00:56,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:00:56,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:00:56,839 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:00:56,840 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:00:56,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 02:00:56,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [714971227] [2021-02-22 02:00:56,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:00:56,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-22 02:00:56,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444204591] [2021-02-22 02:00:56,844 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-22 02:00:56,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:00:56,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-22 02:00:56,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-02-22 02:00:56,845 INFO L87 Difference]: Start difference. First operand 165 states and 175 transitions. Second operand 7 states. [2021-02-22 02:00:57,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:00:57,424 INFO L93 Difference]: Finished difference Result 249 states and 265 transitions. [2021-02-22 02:00:57,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-22 02:00:57,424 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 42 [2021-02-22 02:00:57,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:00:57,427 INFO L225 Difference]: With dead ends: 249 [2021-02-22 02:00:57,427 INFO L226 Difference]: Without dead ends: 245 [2021-02-22 02:00:57,428 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 [2021-02-22 02:00:57,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2021-02-22 02:00:57,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 161. [2021-02-22 02:00:57,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2021-02-22 02:00:57,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 171 transitions. [2021-02-22 02:00:57,453 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 171 transitions. Word has length 42 [2021-02-22 02:00:57,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:00:57,454 INFO L480 AbstractCegarLoop]: Abstraction has 161 states and 171 transitions. [2021-02-22 02:00:57,454 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-22 02:00:57,454 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 171 transitions. [2021-02-22 02:00:57,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-02-22 02:00:57,455 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:00:57,456 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] [2021-02-22 02:00:57,456 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-22 02:00:57,456 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]=== [2021-02-22 02:00:57,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:00:57,457 INFO L82 PathProgramCache]: Analyzing trace with hash 72837122, now seen corresponding path program 1 times [2021-02-22 02:00:57,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:00:57,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [333208382] [2021-02-22 02:00:57,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:00:57,461 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:00:57,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:00:57,492 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:00:57,492 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:00:57,493 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:00:57,493 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:00:57,497 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:00:57,497 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:00:57,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:00:57,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:00:57,544 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:00:57,544 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:00:57,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 02:00:57,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [333208382] [2021-02-22 02:00:57,549 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:00:57,550 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-22 02:00:57,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595938383] [2021-02-22 02:00:57,550 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-22 02:00:57,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:00:57,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-22 02:00:57,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-22 02:00:57,551 INFO L87 Difference]: Start difference. First operand 161 states and 171 transitions. Second operand 4 states. [2021-02-22 02:00:57,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:00:57,856 INFO L93 Difference]: Finished difference Result 271 states and 291 transitions. [2021-02-22 02:00:57,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-22 02:00:57,856 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2021-02-22 02:00:57,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:00:57,858 INFO L225 Difference]: With dead ends: 271 [2021-02-22 02:00:57,858 INFO L226 Difference]: Without dead ends: 200 [2021-02-22 02:00:57,859 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 [2021-02-22 02:00:57,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-02-22 02:00:57,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 164. [2021-02-22 02:00:57,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2021-02-22 02:00:57,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 175 transitions. [2021-02-22 02:00:57,883 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 175 transitions. Word has length 46 [2021-02-22 02:00:57,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:00:57,883 INFO L480 AbstractCegarLoop]: Abstraction has 164 states and 175 transitions. [2021-02-22 02:00:57,883 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-22 02:00:57,883 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 175 transitions. [2021-02-22 02:00:57,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-02-22 02:00:57,884 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:00:57,885 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] [2021-02-22 02:00:57,885 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-22 02:00:57,885 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]=== [2021-02-22 02:00:57,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:00:57,886 INFO L82 PathProgramCache]: Analyzing trace with hash 1276238821, now seen corresponding path program 1 times [2021-02-22 02:00:57,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:00:57,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [856450758] [2021-02-22 02:00:57,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:00:57,890 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:00:57,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:00:57,927 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:00:57,928 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:00:57,932 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:00:57,933 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-22 02:00:57,943 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:00:57,944 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:00:57,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:00:57,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:00:57,971 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:00:57,972 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:00:57,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 02:00:57,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [856450758] [2021-02-22 02:00:57,976 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:00:57,976 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-22 02:00:57,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445597669] [2021-02-22 02:00:57,978 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-22 02:00:57,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:00:57,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-22 02:00:57,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-22 02:00:57,979 INFO L87 Difference]: Start difference. First operand 164 states and 175 transitions. Second operand 4 states. [2021-02-22 02:00:58,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:00:58,230 INFO L93 Difference]: Finished difference Result 164 states and 175 transitions. [2021-02-22 02:00:58,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-22 02:00:58,230 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 48 [2021-02-22 02:00:58,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:00:58,232 INFO L225 Difference]: With dead ends: 164 [2021-02-22 02:00:58,232 INFO L226 Difference]: Without dead ends: 162 [2021-02-22 02:00:58,233 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 [2021-02-22 02:00:58,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-02-22 02:00:58,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2021-02-22 02:00:58,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2021-02-22 02:00:58,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 173 transitions. [2021-02-22 02:00:58,256 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 173 transitions. Word has length 48 [2021-02-22 02:00:58,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:00:58,257 INFO L480 AbstractCegarLoop]: Abstraction has 162 states and 173 transitions. [2021-02-22 02:00:58,257 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-22 02:00:58,257 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 173 transitions. [2021-02-22 02:00:58,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-02-22 02:00:58,258 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:00:58,258 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] [2021-02-22 02:00:58,259 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-22 02:00:58,259 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]=== [2021-02-22 02:00:58,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:00:58,259 INFO L82 PathProgramCache]: Analyzing trace with hash -4183988, now seen corresponding path program 1 times [2021-02-22 02:00:58,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:00:58,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1050421835] [2021-02-22 02:00:58,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:00:58,263 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:00:58,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:00:58,304 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:00:58,304 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:00:58,305 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:00:58,306 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-22 02:00:58,314 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:00:58,315 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-22 02:00:58,327 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:00:58,328 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-22 02:00:58,340 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:00:58,341 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-22 02:00:58,358 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:00:58,359 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 02:00:58,382 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:00:58,383 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 02:00:58,397 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:00:58,399 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:00:58,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:00:58,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:00:58,431 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:00:58,432 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:00:58,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 02:00:58,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1050421835] [2021-02-22 02:00:58,443 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:00:58,443 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-22 02:00:58,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380205375] [2021-02-22 02:00:58,444 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-22 02:00:58,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:00:58,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-22 02:00:58,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-22 02:00:58,445 INFO L87 Difference]: Start difference. First operand 162 states and 173 transitions. Second operand 9 states. [2021-02-22 02:00:59,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:00:59,136 INFO L93 Difference]: Finished difference Result 359 states and 386 transitions. [2021-02-22 02:00:59,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-22 02:00:59,137 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 52 [2021-02-22 02:00:59,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:00:59,142 INFO L225 Difference]: With dead ends: 359 [2021-02-22 02:00:59,142 INFO L226 Difference]: Without dead ends: 287 [2021-02-22 02:00:59,143 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 [2021-02-22 02:00:59,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-02-22 02:00:59,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 181. [2021-02-22 02:00:59,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2021-02-22 02:00:59,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 193 transitions. [2021-02-22 02:00:59,169 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 193 transitions. Word has length 52 [2021-02-22 02:00:59,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:00:59,170 INFO L480 AbstractCegarLoop]: Abstraction has 181 states and 193 transitions. [2021-02-22 02:00:59,170 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-22 02:00:59,170 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 193 transitions. [2021-02-22 02:00:59,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-02-22 02:00:59,171 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:00:59,171 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] [2021-02-22 02:00:59,172 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-22 02:00:59,172 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]=== [2021-02-22 02:00:59,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:00:59,172 INFO L82 PathProgramCache]: Analyzing trace with hash -674720819, now seen corresponding path program 1 times [2021-02-22 02:00:59,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:00:59,173 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [946416200] [2021-02-22 02:00:59,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:00:59,176 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:00:59,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:00:59,202 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:00:59,203 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:00:59,203 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:00:59,204 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:00:59,207 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:00:59,207 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:00:59,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:00:59,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:00:59,241 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:00:59,244 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:00:59,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 02:00:59,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [946416200] [2021-02-22 02:00:59,261 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:00:59,261 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-22 02:00:59,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490805612] [2021-02-22 02:00:59,262 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-22 02:00:59,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:00:59,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-22 02:00:59,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-22 02:00:59,263 INFO L87 Difference]: Start difference. First operand 181 states and 193 transitions. Second operand 4 states. [2021-02-22 02:00:59,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:00:59,518 INFO L93 Difference]: Finished difference Result 187 states and 199 transitions. [2021-02-22 02:00:59,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-22 02:00:59,519 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2021-02-22 02:00:59,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:00:59,520 INFO L225 Difference]: With dead ends: 187 [2021-02-22 02:00:59,521 INFO L226 Difference]: Without dead ends: 182 [2021-02-22 02:00:59,521 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 [2021-02-22 02:00:59,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-02-22 02:00:59,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2021-02-22 02:00:59,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2021-02-22 02:00:59,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 194 transitions. [2021-02-22 02:00:59,547 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 194 transitions. Word has length 56 [2021-02-22 02:00:59,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:00:59,548 INFO L480 AbstractCegarLoop]: Abstraction has 182 states and 194 transitions. [2021-02-22 02:00:59,548 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-22 02:00:59,548 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 194 transitions. [2021-02-22 02:00:59,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-02-22 02:00:59,549 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:00:59,549 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] [2021-02-22 02:00:59,549 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-22 02:00:59,550 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]=== [2021-02-22 02:00:59,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:00:59,550 INFO L82 PathProgramCache]: Analyzing trace with hash -1815431908, now seen corresponding path program 1 times [2021-02-22 02:00:59,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:00:59,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [70870653] [2021-02-22 02:00:59,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:00:59,584 WARN L141 QuantifierPusher]: treesize reduction 3, result has 93.9 percent of original size [2021-02-22 02:00:59,603 WARN L147 QuantifierPusher]: treesize reduction 3, result has 93.9 percent of original size 46 [2021-02-22 02:00:59,611 WARN L141 QuantifierPusher]: treesize reduction 3, result has 93.9 percent of original size [2021-02-22 02:00:59,615 WARN L147 QuantifierPusher]: treesize reduction 3, result has 93.9 percent of original size 46 [2021-02-22 02:00:59,627 WARN L141 QuantifierPusher]: treesize reduction 2, result has 95.0 percent of original size [2021-02-22 02:00:59,645 WARN L147 QuantifierPusher]: treesize reduction 2, result has 95.0 percent of original size 38 [2021-02-22 02:00:59,656 WARN L141 QuantifierPusher]: treesize reduction 24, result has 70.0 percent of original size [2021-02-22 02:00:59,663 INFO L723 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-02-22 02:00:59,671 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:00:59,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:00:59,674 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:00:59,679 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-22 02:00:59,684 WARN L147 QuantifierPusher]: treesize reduction 24, result has 70.0 percent of original size 56 [2021-02-22 02:00:59,689 WARN L141 QuantifierPusher]: treesize reduction 3, result has 93.9 percent of original size [2021-02-22 02:00:59,695 WARN L147 QuantifierPusher]: treesize reduction 3, result has 93.9 percent of original size 46 [2021-02-22 02:00:59,698 WARN L141 QuantifierPusher]: treesize reduction 3, result has 93.9 percent of original size [2021-02-22 02:00:59,708 WARN L147 QuantifierPusher]: treesize reduction 3, result has 93.9 percent of original size 46 [2021-02-22 02:00:59,726 WARN L141 QuantifierPusher]: treesize reduction 2, result has 95.5 percent of original size [2021-02-22 02:00:59,732 WARN L147 QuantifierPusher]: treesize reduction 2, result has 95.5 percent of original size 42 [2021-02-22 02:00:59,738 WARN L141 QuantifierPusher]: treesize reduction 24, result has 71.4 percent of original size [2021-02-22 02:00:59,740 INFO L723 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-02-22 02:00:59,743 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:00:59,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:00:59,745 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:00:59,748 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-22 02:00:59,750 WARN L147 QuantifierPusher]: treesize reduction 24, result has 71.4 percent of original size 60 [2021-02-22 02:00:59,755 WARN L141 QuantifierPusher]: treesize reduction 3, result has 93.9 percent of original size [2021-02-22 02:00:59,763 WARN L147 QuantifierPusher]: treesize reduction 3, result has 93.9 percent of original size 46 [2021-02-22 02:00:59,766 WARN L141 QuantifierPusher]: treesize reduction 3, result has 93.9 percent of original size [2021-02-22 02:00:59,771 WARN L147 QuantifierPusher]: treesize reduction 3, result has 93.9 percent of original size 46 [2021-02-22 02:00:59,783 WARN L141 QuantifierPusher]: treesize reduction 2, result has 95.5 percent of original size [2021-02-22 02:00:59,790 WARN L147 QuantifierPusher]: treesize reduction 2, result has 95.5 percent of original size 42 [2021-02-22 02:00:59,801 WARN L141 QuantifierPusher]: treesize reduction 24, result has 71.4 percent of original size [2021-02-22 02:00:59,806 INFO L723 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-02-22 02:00:59,808 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:00:59,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:00:59,811 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:00:59,817 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-22 02:00:59,819 WARN L147 QuantifierPusher]: treesize reduction 24, result has 71.4 percent of original size 60 [2021-02-22 02:00:59,822 WARN L141 QuantifierPusher]: treesize reduction 3, result has 93.9 percent of original size [2021-02-22 02:00:59,827 WARN L147 QuantifierPusher]: treesize reduction 3, result has 93.9 percent of original size 46 [2021-02-22 02:00:59,831 WARN L141 QuantifierPusher]: treesize reduction 3, result has 93.9 percent of original size [2021-02-22 02:00:59,836 WARN L147 QuantifierPusher]: treesize reduction 3, result has 93.9 percent of original size 46 [2021-02-22 02:00:59,846 WARN L141 QuantifierPusher]: treesize reduction 2, result has 95.0 percent of original size [2021-02-22 02:00:59,849 WARN L147 QuantifierPusher]: treesize reduction 2, result has 95.0 percent of original size 38 [2021-02-22 02:00:59,853 WARN L141 QuantifierPusher]: treesize reduction 24, result has 70.0 percent of original size [2021-02-22 02:00:59,855 INFO L723 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-02-22 02:00:59,856 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:00:59,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:00:59,857 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:00:59,860 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-22 02:00:59,861 WARN L147 QuantifierPusher]: treesize reduction 24, result has 70.0 percent of original size 56 [2021-02-22 02:00:59,862 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-22 02:00:59,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:00:59,892 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:00:59,893 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:00:59,894 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:00:59,894 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-22 02:00:59,900 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:00:59,901 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:00:59,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:00:59,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:00:59,925 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:00:59,925 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:00:59,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 02:00:59,931 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:00:59,933 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-22 02:00:59,934 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:00:59,940 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-22 02:00:59,941 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:00:59,943 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-22 02:00:59,945 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:00:59,946 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-22 02:00:59,947 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:00:59,948 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-22 02:00:59,959 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:00:59,960 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-22 02:00:59,977 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:00:59,978 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-02-22 02:01:00,002 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:00,004 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-02-22 02:01:00,025 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:00,025 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-02-22 02:01:00,051 WARN L141 QuantifierPusher]: treesize reduction 3, result has 92.5 percent of original size [2021-02-22 02:01:00,052 WARN L147 QuantifierPusher]: treesize reduction 3, result has 92.5 percent of original size 37 [2021-02-22 02:01:00,053 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:00,054 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-02-22 02:01:00,055 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:00,056 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-02-22 02:01:00,090 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:00,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:01:00,093 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:00,094 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-02-22 02:01:00,095 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-02-22 02:01:00,130 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:00,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:01:00,136 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:00,136 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-02-22 02:01:00,138 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-02-22 02:01:00,170 WARN L141 QuantifierPusher]: treesize reduction 15, result has 6.3 percent of original size [2021-02-22 02:01:00,171 WARN L147 QuantifierPusher]: treesize reduction 15, result has 6.3 percent of original size 1 [2021-02-22 02:01:00,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [70870653] [2021-02-22 02:01:00,171 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:01:00,171 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-02-22 02:01:00,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925787480] [2021-02-22 02:01:00,172 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-22 02:01:00,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:01:00,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-22 02:01:00,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-02-22 02:01:00,173 INFO L87 Difference]: Start difference. First operand 182 states and 194 transitions. Second operand 12 states. [2021-02-22 02:01:00,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:01:00,821 INFO L93 Difference]: Finished difference Result 203 states and 217 transitions. [2021-02-22 02:01:00,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-22 02:01:00,821 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2021-02-22 02:01:00,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:01:00,823 INFO L225 Difference]: With dead ends: 203 [2021-02-22 02:01:00,823 INFO L226 Difference]: Without dead ends: 201 [2021-02-22 02:01:00,824 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-02-22 02:01:00,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2021-02-22 02:01:00,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 180. [2021-02-22 02:01:00,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2021-02-22 02:01:00,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 192 transitions. [2021-02-22 02:01:00,855 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 192 transitions. Word has length 57 [2021-02-22 02:01:00,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:01:00,856 INFO L480 AbstractCegarLoop]: Abstraction has 180 states and 192 transitions. [2021-02-22 02:01:00,856 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-22 02:01:00,856 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 192 transitions. [2021-02-22 02:01:00,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-02-22 02:01:00,857 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:01:00,857 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] [2021-02-22 02:01:00,857 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-02-22 02:01:00,857 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]=== [2021-02-22 02:01:00,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:01:00,858 INFO L82 PathProgramCache]: Analyzing trace with hash -1929887829, now seen corresponding path program 1 times [2021-02-22 02:01:00,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:01:00,858 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1659820916] [2021-02-22 02:01:00,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:01:00,862 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:01:00,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:01:00,998 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:00,999 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:00,999 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:01,000 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-22 02:01:01,009 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:01,009 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-22 02:01:01,017 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:01,018 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-22 02:01:01,030 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:01,031 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-22 02:01:01,044 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:01,045 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-02-22 02:01:01,064 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:01,065 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-22 02:01:01,076 WARN L141 QuantifierPusher]: treesize reduction 33, result has 56.0 percent of original size [2021-02-22 02:01:01,077 WARN L147 QuantifierPusher]: treesize reduction 33, result has 56.0 percent of original size 42 [2021-02-22 02:01:01,120 WARN L141 QuantifierPusher]: treesize reduction 19, result has 69.4 percent of original size [2021-02-22 02:01:01,120 WARN L147 QuantifierPusher]: treesize reduction 19, result has 69.4 percent of original size 43 [2021-02-22 02:01:01,146 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:01,147 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-02-22 02:01:01,166 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:01,167 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-22 02:01:01,189 WARN L141 QuantifierPusher]: treesize reduction 10, result has 68.8 percent of original size [2021-02-22 02:01:01,190 WARN L147 QuantifierPusher]: treesize reduction 10, result has 68.8 percent of original size 22 [2021-02-22 02:01:01,211 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:01,211 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 02:01:01,229 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:01,231 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:01,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:01:01,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:01:01,277 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:01,278 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:01,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 02:01:01,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1659820916] [2021-02-22 02:01:01,322 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:01:01,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-22 02:01:01,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34135374] [2021-02-22 02:01:01,323 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-22 02:01:01,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:01:01,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-22 02:01:01,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-02-22 02:01:01,324 INFO L87 Difference]: Start difference. First operand 180 states and 192 transitions. Second operand 14 states. [2021-02-22 02:01:03,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:01:03,439 INFO L93 Difference]: Finished difference Result 561 states and 598 transitions. [2021-02-22 02:01:03,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-02-22 02:01:03,439 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 57 [2021-02-22 02:01:03,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:01:03,442 INFO L225 Difference]: With dead ends: 561 [2021-02-22 02:01:03,443 INFO L226 Difference]: Without dead ends: 558 [2021-02-22 02:01:03,444 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=252, Invalid=804, Unknown=0, NotChecked=0, Total=1056 [2021-02-22 02:01:03,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2021-02-22 02:01:03,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 199. [2021-02-22 02:01:03,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2021-02-22 02:01:03,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 213 transitions. [2021-02-22 02:01:03,519 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 213 transitions. Word has length 57 [2021-02-22 02:01:03,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:01:03,520 INFO L480 AbstractCegarLoop]: Abstraction has 199 states and 213 transitions. [2021-02-22 02:01:03,520 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-22 02:01:03,520 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 213 transitions. [2021-02-22 02:01:03,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-02-22 02:01:03,521 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:01:03,521 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] [2021-02-22 02:01:03,521 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-02-22 02:01:03,521 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]=== [2021-02-22 02:01:03,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:01:03,522 INFO L82 PathProgramCache]: Analyzing trace with hash -963591574, now seen corresponding path program 1 times [2021-02-22 02:01:03,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:01:03,523 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [238619371] [2021-02-22 02:01:03,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:01:03,527 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:01:03,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:01:03,589 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:03,590 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:03,590 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:03,591 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-22 02:01:03,599 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:03,599 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-22 02:01:03,611 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:03,611 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-22 02:01:03,621 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:03,621 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 02:01:03,634 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:03,635 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:03,642 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:03,643 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:03,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:01:03,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:01:03,671 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:03,671 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:03,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 02:01:03,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [238619371] [2021-02-22 02:01:03,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:01:03,677 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-22 02:01:03,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058720929] [2021-02-22 02:01:03,677 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-22 02:01:03,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:01:03,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-22 02:01:03,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-02-22 02:01:03,678 INFO L87 Difference]: Start difference. First operand 199 states and 213 transitions. Second operand 8 states. [2021-02-22 02:01:04,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:01:04,178 INFO L93 Difference]: Finished difference Result 217 states and 233 transitions. [2021-02-22 02:01:04,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-22 02:01:04,179 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2021-02-22 02:01:04,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:01:04,180 INFO L225 Difference]: With dead ends: 217 [2021-02-22 02:01:04,180 INFO L226 Difference]: Without dead ends: 212 [2021-02-22 02:01:04,181 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2021-02-22 02:01:04,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-02-22 02:01:04,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 193. [2021-02-22 02:01:04,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2021-02-22 02:01:04,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 207 transitions. [2021-02-22 02:01:04,225 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 207 transitions. Word has length 58 [2021-02-22 02:01:04,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:01:04,225 INFO L480 AbstractCegarLoop]: Abstraction has 193 states and 207 transitions. [2021-02-22 02:01:04,225 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-22 02:01:04,226 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 207 transitions. [2021-02-22 02:01:04,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-02-22 02:01:04,226 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:01:04,227 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] [2021-02-22 02:01:04,227 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-02-22 02:01:04,227 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]=== [2021-02-22 02:01:04,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:01:04,227 INFO L82 PathProgramCache]: Analyzing trace with hash -1600054653, now seen corresponding path program 1 times [2021-02-22 02:01:04,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:01:04,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1383924305] [2021-02-22 02:01:04,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:01:04,233 WARN L141 QuantifierPusher]: treesize reduction 3, result has 93.9 percent of original size [2021-02-22 02:01:04,238 WARN L147 QuantifierPusher]: treesize reduction 3, result has 93.9 percent of original size 46 [2021-02-22 02:01:04,241 WARN L141 QuantifierPusher]: treesize reduction 3, result has 93.9 percent of original size [2021-02-22 02:01:04,243 WARN L147 QuantifierPusher]: treesize reduction 3, result has 93.9 percent of original size 46 [2021-02-22 02:01:04,253 WARN L141 QuantifierPusher]: treesize reduction 2, result has 95.5 percent of original size [2021-02-22 02:01:04,255 WARN L147 QuantifierPusher]: treesize reduction 2, result has 95.5 percent of original size 42 [2021-02-22 02:01:04,257 WARN L141 QuantifierPusher]: treesize reduction 18, result has 78.6 percent of original size [2021-02-22 02:01:04,259 INFO L723 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-02-22 02:01:04,262 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:04,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:01:04,263 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:04,267 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-22 02:01:04,268 WARN L147 QuantifierPusher]: treesize reduction 18, result has 78.6 percent of original size 66 [2021-02-22 02:01:04,269 WARN L141 QuantifierPusher]: treesize reduction 3, result has 93.9 percent of original size [2021-02-22 02:01:04,272 WARN L147 QuantifierPusher]: treesize reduction 3, result has 93.9 percent of original size 46 [2021-02-22 02:01:04,274 WARN L141 QuantifierPusher]: treesize reduction 3, result has 93.9 percent of original size [2021-02-22 02:01:04,276 WARN L147 QuantifierPusher]: treesize reduction 3, result has 93.9 percent of original size 46 [2021-02-22 02:01:04,285 WARN L141 QuantifierPusher]: treesize reduction 2, result has 95.0 percent of original size [2021-02-22 02:01:04,286 WARN L147 QuantifierPusher]: treesize reduction 2, result has 95.0 percent of original size 38 [2021-02-22 02:01:04,290 WARN L141 QuantifierPusher]: treesize reduction 18, result has 77.5 percent of original size [2021-02-22 02:01:04,291 INFO L723 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-02-22 02:01:04,292 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:04,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:01:04,293 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:04,295 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-22 02:01:04,296 WARN L147 QuantifierPusher]: treesize reduction 18, result has 77.5 percent of original size 62 [2021-02-22 02:01:04,298 WARN L141 QuantifierPusher]: treesize reduction 3, result has 93.9 percent of original size [2021-02-22 02:01:04,302 WARN L147 QuantifierPusher]: treesize reduction 3, result has 93.9 percent of original size 46 [2021-02-22 02:01:04,304 WARN L141 QuantifierPusher]: treesize reduction 3, result has 93.9 percent of original size [2021-02-22 02:01:04,309 WARN L147 QuantifierPusher]: treesize reduction 3, result has 93.9 percent of original size 46 [2021-02-22 02:01:04,317 WARN L141 QuantifierPusher]: treesize reduction 2, result has 95.5 percent of original size [2021-02-22 02:01:04,320 WARN L147 QuantifierPusher]: treesize reduction 2, result has 95.5 percent of original size 42 [2021-02-22 02:01:04,323 WARN L141 QuantifierPusher]: treesize reduction 18, result has 78.6 percent of original size [2021-02-22 02:01:04,324 INFO L723 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-02-22 02:01:04,326 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:04,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:01:04,327 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:04,329 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-22 02:01:04,330 WARN L147 QuantifierPusher]: treesize reduction 18, result has 78.6 percent of original size 66 [2021-02-22 02:01:04,331 WARN L141 QuantifierPusher]: treesize reduction 3, result has 93.9 percent of original size [2021-02-22 02:01:04,334 WARN L147 QuantifierPusher]: treesize reduction 3, result has 93.9 percent of original size 46 [2021-02-22 02:01:04,336 WARN L141 QuantifierPusher]: treesize reduction 3, result has 93.9 percent of original size [2021-02-22 02:01:04,339 WARN L147 QuantifierPusher]: treesize reduction 3, result has 93.9 percent of original size 46 [2021-02-22 02:01:04,347 WARN L141 QuantifierPusher]: treesize reduction 2, result has 95.0 percent of original size [2021-02-22 02:01:04,348 WARN L147 QuantifierPusher]: treesize reduction 2, result has 95.0 percent of original size 38 [2021-02-22 02:01:04,350 WARN L141 QuantifierPusher]: treesize reduction 18, result has 77.5 percent of original size [2021-02-22 02:01:04,351 INFO L723 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-02-22 02:01:04,353 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:04,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:01:04,354 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:04,356 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-22 02:01:04,357 WARN L147 QuantifierPusher]: treesize reduction 18, result has 77.5 percent of original size 62 [2021-02-22 02:01:04,358 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-22 02:01:04,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:01:04,389 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:04,389 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:04,390 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:04,390 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 02:01:04,393 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:04,394 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 02:01:04,398 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:04,398 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 02:01:04,403 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:04,403 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 02:01:04,404 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:04,404 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 02:01:04,405 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:04,405 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 02:01:04,406 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:04,406 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 02:01:04,406 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:04,407 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:04,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:01:04,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:01:04,456 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:04,457 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:04,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 02:01:04,463 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:04,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:01:04,465 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:04,467 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-02-22 02:01:04,467 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-02-22 02:01:04,468 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:04,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:01:04,470 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:04,471 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-02-22 02:01:04,472 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-02-22 02:01:04,473 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:04,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:01:04,475 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:04,476 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-02-22 02:01:04,476 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-02-22 02:01:04,497 WARN L141 QuantifierPusher]: treesize reduction 10, result has 28.6 percent of original size [2021-02-22 02:01:04,498 WARN L147 QuantifierPusher]: treesize reduction 10, result has 28.6 percent of original size 4 [2021-02-22 02:01:04,498 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:04,499 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-22 02:01:04,511 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:04,514 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-02-22 02:01:04,533 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:04,535 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-02-22 02:01:04,560 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:04,562 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-02-22 02:01:04,587 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:04,589 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-02-22 02:01:04,617 WARN L141 QuantifierPusher]: treesize reduction 3, result has 91.4 percent of original size [2021-02-22 02:01:04,618 WARN L147 QuantifierPusher]: treesize reduction 3, result has 91.4 percent of original size 32 [2021-02-22 02:01:04,619 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:04,619 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-02-22 02:01:04,620 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:04,620 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-02-22 02:01:04,659 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:04,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:01:04,662 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:04,663 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-02-22 02:01:04,664 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-02-22 02:01:04,699 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:04,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:01:04,704 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:04,704 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-02-22 02:01:04,705 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-02-22 02:01:04,738 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:04,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:01:04,740 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:04,741 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-02-22 02:01:04,741 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-02-22 02:01:04,777 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:04,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:01:04,780 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:04,782 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-02-22 02:01:04,783 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-02-22 02:01:04,827 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:04,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:01:04,829 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:04,829 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-02-22 02:01:04,830 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-02-22 02:01:04,887 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:04,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:01:04,891 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:04,893 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-02-22 02:01:04,894 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 88 [2021-02-22 02:01:04,958 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:04,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:01:04,960 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:04,963 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-02-22 02:01:04,965 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-02-22 02:01:05,023 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:05,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:01:05,026 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:05,026 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-02-22 02:01:05,027 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2021-02-22 02:01:05,096 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:05,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:01:05,101 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:05,102 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-02-22 02:01:05,103 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2021-02-22 02:01:05,104 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:05,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:01:05,105 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:05,111 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-02-22 02:01:05,114 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2021-02-22 02:01:05,117 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:05,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:01:05,118 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:05,119 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-02-22 02:01:05,120 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 102 [2021-02-22 02:01:05,203 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:05,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:01:05,209 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:05,211 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-02-22 02:01:05,216 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 111 [2021-02-22 02:01:05,317 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:05,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:01:05,323 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:05,323 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-02-22 02:01:05,325 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 112 [2021-02-22 02:01:05,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1383924305] [2021-02-22 02:01:05,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:01:05,419 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-02-22 02:01:05,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244103380] [2021-02-22 02:01:05,420 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-02-22 02:01:05,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:01:05,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-02-22 02:01:05,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2021-02-22 02:01:05,421 INFO L87 Difference]: Start difference. First operand 193 states and 207 transitions. Second operand 23 states. [2021-02-22 02:01:07,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:01:07,499 INFO L93 Difference]: Finished difference Result 302 states and 323 transitions. [2021-02-22 02:01:07,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-02-22 02:01:07,499 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 61 [2021-02-22 02:01:07,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:01:07,501 INFO L225 Difference]: With dead ends: 302 [2021-02-22 02:01:07,501 INFO L226 Difference]: Without dead ends: 299 [2021-02-22 02:01:07,503 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 430 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=256, Invalid=1466, Unknown=0, NotChecked=0, Total=1722 [2021-02-22 02:01:07,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2021-02-22 02:01:07,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 213. [2021-02-22 02:01:07,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2021-02-22 02:01:07,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 230 transitions. [2021-02-22 02:01:07,560 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 230 transitions. Word has length 61 [2021-02-22 02:01:07,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:01:07,561 INFO L480 AbstractCegarLoop]: Abstraction has 213 states and 230 transitions. [2021-02-22 02:01:07,561 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2021-02-22 02:01:07,561 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 230 transitions. [2021-02-22 02:01:07,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-02-22 02:01:07,562 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:01:07,562 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] [2021-02-22 02:01:07,562 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-02-22 02:01:07,562 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]=== [2021-02-22 02:01:07,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:01:07,563 INFO L82 PathProgramCache]: Analyzing trace with hash 450193912, now seen corresponding path program 1 times [2021-02-22 02:01:07,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:01:07,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1122452925] [2021-02-22 02:01:07,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:01:07,567 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:01:07,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:01:07,641 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:07,642 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:07,642 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:07,643 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-22 02:01:07,649 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:07,649 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-22 02:01:07,657 WARN L141 QuantifierPusher]: treesize reduction 9, result has 55.0 percent of original size [2021-02-22 02:01:07,657 WARN L147 QuantifierPusher]: treesize reduction 9, result has 55.0 percent of original size 11 [2021-02-22 02:01:07,667 WARN L141 QuantifierPusher]: treesize reduction 15, result has 60.5 percent of original size [2021-02-22 02:01:07,668 WARN L147 QuantifierPusher]: treesize reduction 15, result has 60.5 percent of original size 23 [2021-02-22 02:01:07,681 WARN L141 QuantifierPusher]: treesize reduction 9, result has 76.3 percent of original size [2021-02-22 02:01:07,681 WARN L147 QuantifierPusher]: treesize reduction 9, result has 76.3 percent of original size 29 [2021-02-22 02:01:07,703 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:07,704 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-02-22 02:01:07,732 WARN L141 QuantifierPusher]: treesize reduction 27, result has 69.0 percent of original size [2021-02-22 02:01:07,733 WARN L147 QuantifierPusher]: treesize reduction 27, result has 69.0 percent of original size 60 [2021-02-22 02:01:07,792 WARN L141 QuantifierPusher]: treesize reduction 15, result has 72.2 percent of original size [2021-02-22 02:01:07,793 WARN L147 QuantifierPusher]: treesize reduction 15, result has 72.2 percent of original size 39 [2021-02-22 02:01:07,818 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:07,819 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-02-22 02:01:07,844 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:07,845 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-22 02:01:07,868 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:07,868 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-22 02:01:07,895 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:07,896 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 02:01:07,919 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:07,920 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:07,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:01:07,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:01:07,976 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:07,978 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:08,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 02:01:08,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1122452925] [2021-02-22 02:01:08,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:01:08,006 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-22 02:01:08,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068600578] [2021-02-22 02:01:08,007 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-22 02:01:08,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:01:08,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-22 02:01:08,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2021-02-22 02:01:08,009 INFO L87 Difference]: Start difference. First operand 213 states and 230 transitions. Second operand 15 states. [2021-02-22 02:01:10,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:01:10,335 INFO L93 Difference]: Finished difference Result 583 states and 626 transitions. [2021-02-22 02:01:10,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-02-22 02:01:10,335 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 61 [2021-02-22 02:01:10,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:01:10,338 INFO L225 Difference]: With dead ends: 583 [2021-02-22 02:01:10,338 INFO L226 Difference]: Without dead ends: 580 [2021-02-22 02:01:10,339 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=272, Invalid=850, Unknown=0, NotChecked=0, Total=1122 [2021-02-22 02:01:10,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2021-02-22 02:01:10,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 217. [2021-02-22 02:01:10,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2021-02-22 02:01:10,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 234 transitions. [2021-02-22 02:01:10,396 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 234 transitions. Word has length 61 [2021-02-22 02:01:10,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:01:10,396 INFO L480 AbstractCegarLoop]: Abstraction has 217 states and 234 transitions. [2021-02-22 02:01:10,396 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-02-22 02:01:10,396 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 234 transitions. [2021-02-22 02:01:10,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-02-22 02:01:10,397 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:01:10,397 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] [2021-02-22 02:01:10,397 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-02-22 02:01:10,397 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]=== [2021-02-22 02:01:10,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:01:10,398 INFO L82 PathProgramCache]: Analyzing trace with hash -23328119, now seen corresponding path program 1 times [2021-02-22 02:01:10,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:01:10,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [532099590] [2021-02-22 02:01:10,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:01:10,403 WARN L141 QuantifierPusher]: treesize reduction 3, result has 93.9 percent of original size [2021-02-22 02:01:10,413 WARN L147 QuantifierPusher]: treesize reduction 3, result has 93.9 percent of original size 46 [2021-02-22 02:01:10,415 WARN L141 QuantifierPusher]: treesize reduction 3, result has 93.9 percent of original size [2021-02-22 02:01:10,418 WARN L147 QuantifierPusher]: treesize reduction 3, result has 93.9 percent of original size 46 [2021-02-22 02:01:10,426 WARN L141 QuantifierPusher]: treesize reduction 2, result has 95.0 percent of original size [2021-02-22 02:01:10,428 WARN L147 QuantifierPusher]: treesize reduction 2, result has 95.0 percent of original size 38 [2021-02-22 02:01:10,430 WARN L141 QuantifierPusher]: treesize reduction 21, result has 73.8 percent of original size [2021-02-22 02:01:10,431 INFO L723 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-02-22 02:01:10,432 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:10,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:01:10,433 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:10,435 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-22 02:01:10,436 WARN L147 QuantifierPusher]: treesize reduction 21, result has 73.8 percent of original size 59 [2021-02-22 02:01:10,437 WARN L141 QuantifierPusher]: treesize reduction 3, result has 93.9 percent of original size [2021-02-22 02:01:10,439 WARN L147 QuantifierPusher]: treesize reduction 3, result has 93.9 percent of original size 46 [2021-02-22 02:01:10,441 WARN L141 QuantifierPusher]: treesize reduction 3, result has 93.9 percent of original size [2021-02-22 02:01:10,443 WARN L147 QuantifierPusher]: treesize reduction 3, result has 93.9 percent of original size 46 [2021-02-22 02:01:10,451 WARN L141 QuantifierPusher]: treesize reduction 2, result has 95.5 percent of original size [2021-02-22 02:01:10,452 WARN L147 QuantifierPusher]: treesize reduction 2, result has 95.5 percent of original size 42 [2021-02-22 02:01:10,455 WARN L141 QuantifierPusher]: treesize reduction 21, result has 75.0 percent of original size [2021-02-22 02:01:10,456 INFO L723 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-02-22 02:01:10,457 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:10,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:01:10,458 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:10,460 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-22 02:01:10,460 WARN L147 QuantifierPusher]: treesize reduction 21, result has 75.0 percent of original size 63 [2021-02-22 02:01:10,461 WARN L141 QuantifierPusher]: treesize reduction 3, result has 93.9 percent of original size [2021-02-22 02:01:10,464 WARN L147 QuantifierPusher]: treesize reduction 3, result has 93.9 percent of original size 46 [2021-02-22 02:01:10,465 WARN L141 QuantifierPusher]: treesize reduction 3, result has 93.9 percent of original size [2021-02-22 02:01:10,467 WARN L147 QuantifierPusher]: treesize reduction 3, result has 93.9 percent of original size 46 [2021-02-22 02:01:10,476 WARN L141 QuantifierPusher]: treesize reduction 2, result has 95.0 percent of original size [2021-02-22 02:01:10,477 WARN L147 QuantifierPusher]: treesize reduction 2, result has 95.0 percent of original size 38 [2021-02-22 02:01:10,479 WARN L141 QuantifierPusher]: treesize reduction 21, result has 73.8 percent of original size [2021-02-22 02:01:10,480 INFO L723 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-02-22 02:01:10,481 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:10,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:01:10,482 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:10,484 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-22 02:01:10,485 WARN L147 QuantifierPusher]: treesize reduction 21, result has 73.8 percent of original size 59 [2021-02-22 02:01:10,486 WARN L141 QuantifierPusher]: treesize reduction 3, result has 93.9 percent of original size [2021-02-22 02:01:10,488 WARN L147 QuantifierPusher]: treesize reduction 3, result has 93.9 percent of original size 46 [2021-02-22 02:01:10,490 WARN L141 QuantifierPusher]: treesize reduction 3, result has 93.9 percent of original size [2021-02-22 02:01:10,492 WARN L147 QuantifierPusher]: treesize reduction 3, result has 93.9 percent of original size 46 [2021-02-22 02:01:10,500 WARN L141 QuantifierPusher]: treesize reduction 2, result has 95.5 percent of original size [2021-02-22 02:01:10,502 WARN L147 QuantifierPusher]: treesize reduction 2, result has 95.5 percent of original size 42 [2021-02-22 02:01:10,504 WARN L141 QuantifierPusher]: treesize reduction 21, result has 75.0 percent of original size [2021-02-22 02:01:10,505 INFO L723 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-02-22 02:01:10,506 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:10,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:01:10,507 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:10,509 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-22 02:01:10,510 WARN L147 QuantifierPusher]: treesize reduction 21, result has 75.0 percent of original size 63 [2021-02-22 02:01:10,510 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-22 02:01:10,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 02:01:10,526 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 02:01:10,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 02:01:10,539 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 02:01:10,578 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-22 02:01:10,578 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-22 02:01:10,578 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-02-22 02:01:10,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.02 02:01:10 BoogieIcfgContainer [2021-02-22 02:01:10,598 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-22 02:01:10,599 INFO L168 Benchmark]: Toolchain (without parser) took 19083.90 ms. Allocated memory was 152.0 MB in the beginning and 338.7 MB in the end (delta: 186.6 MB). Free memory was 127.8 MB in the beginning and 201.4 MB in the end (delta: -73.6 MB). Peak memory consumption was 114.5 MB. Max. memory is 8.0 GB. [2021-02-22 02:01:10,599 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 152.0 MB. Free memory is still 134.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 02:01:10,599 INFO L168 Benchmark]: CACSL2BoogieTranslator took 729.65 ms. Allocated memory is still 152.0 MB. Free memory was 126.6 MB in the beginning and 102.2 MB in the end (delta: 24.4 MB). Peak memory consumption was 25.2 MB. Max. memory is 8.0 GB. [2021-02-22 02:01:10,599 INFO L168 Benchmark]: Boogie Preprocessor took 131.89 ms. Allocated memory is still 152.0 MB. Free memory was 102.2 MB in the beginning and 135.0 MB in the end (delta: -32.8 MB). Peak memory consumption was 7.7 MB. Max. memory is 8.0 GB. [2021-02-22 02:01:10,600 INFO L168 Benchmark]: RCFGBuilder took 863.51 ms. Allocated memory is still 152.0 MB. Free memory was 135.0 MB in the beginning and 122.0 MB in the end (delta: 13.0 MB). Peak memory consumption was 55.2 MB. Max. memory is 8.0 GB. [2021-02-22 02:01:10,600 INFO L168 Benchmark]: TraceAbstraction took 17336.99 ms. Allocated memory was 152.0 MB in the beginning and 338.7 MB in the end (delta: 186.6 MB). Free memory was 121.4 MB in the beginning and 201.4 MB in the end (delta: -79.9 MB). Peak memory consumption was 107.3 MB. Max. memory is 8.0 GB. [2021-02-22 02:01:10,601 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 152.0 MB. Free memory is still 134.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 729.65 ms. Allocated memory is still 152.0 MB. Free memory was 126.6 MB in the beginning and 102.2 MB in the end (delta: 24.4 MB). Peak memory consumption was 25.2 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 131.89 ms. Allocated memory is still 152.0 MB. Free memory was 102.2 MB in the beginning and 135.0 MB in the end (delta: -32.8 MB). Peak memory consumption was 7.7 MB. Max. memory is 8.0 GB. * RCFGBuilder took 863.51 ms. Allocated memory is still 152.0 MB. Free memory was 135.0 MB in the beginning and 122.0 MB in the end (delta: 13.0 MB). Peak memory consumption was 55.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 17336.99 ms. Allocated memory was 152.0 MB in the beginning and 338.7 MB in the end (delta: 186.6 MB). Free memory was 121.4 MB in the beginning and 201.4 MB in the end (delta: -79.9 MB). Peak memory consumption was 107.3 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 TRUE __VERIFIER_nondet_int() [L1004] list->inner = ((void*)0) [L1004] EXPR list->inner [L1004] EXPR list->inner != ((void*)0) || list->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 FALSE !(((void*)0) != inner) [L1042] COND FALSE !(!(len <= 1)) [L1044] EXPR end->next [L1044] end = end->next [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 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: 17.2s, OverallIterations: 16, TraceHistogramMax: 2, AutomataDifference: 12.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2585 SDtfs, 4613 SDslu, 7955 SDs, 0 SdLazy, 5667 SolverSat, 153 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 250 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 807 ImplicationChecksByTransitivity, 5.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=217occurred in iteration=15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 15 MinimizatonAttempts, 1367 StatesRemovedByMinimization, 12 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...