/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 --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/forester-heap/sll-01-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 23:08:16,281 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 23:08:16,284 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 23:08:16,321 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 23:08:16,321 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 23:08:16,323 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 23:08:16,325 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 23:08:16,327 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 23:08:16,329 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 23:08:16,331 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 23:08:16,332 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 23:08:16,334 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 23:08:16,334 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 23:08:16,336 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 23:08:16,337 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 23:08:16,338 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 23:08:16,356 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 23:08:16,357 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 23:08:16,359 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 23:08:16,362 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 23:08:16,364 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 23:08:16,369 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 23:08:16,372 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 23:08:16,374 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 23:08:16,380 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 23:08:16,381 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 23:08:16,383 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 23:08:16,385 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 23:08:16,388 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 23:08:16,390 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 23:08:16,390 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 23:08:16,394 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 23:08:16,396 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 23:08:16,397 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 23:08:16,401 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 23:08:16,402 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 23:08:16,403 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 23:08:16,404 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 23:08:16,404 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 23:08:16,406 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 23:08:16,407 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 23:08:16,409 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 23:08:16,439 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 23:08:16,440 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 23:08:16,443 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 23:08:16,444 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 23:08:16,444 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 23:08:16,444 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 23:08:16,444 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 23:08:16,444 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 23:08:16,445 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 23:08:16,445 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 23:08:16,445 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 23:08:16,445 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 23:08:16,445 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 23:08:16,446 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 23:08:16,446 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 23:08:16,446 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 23:08:16,446 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 23:08:16,447 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 23:08:16,447 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 23:08:16,448 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 23:08:16,449 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 23:08:16,449 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 23:08:16,449 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-23 23:08:16,893 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 23:08:16,924 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 23:08:16,927 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 23:08:16,929 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 23:08:16,930 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 23:08:16,931 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-01-2.i [2021-02-23 23:08:17,012 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e841b78ff/7dd61000576846a8933b5b4a92bae774/FLAGd16cbfa87 [2021-02-23 23:08:17,783 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 23:08:17,784 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-01-2.i [2021-02-23 23:08:17,807 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e841b78ff/7dd61000576846a8933b5b4a92bae774/FLAGd16cbfa87 [2021-02-23 23:08:18,009 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e841b78ff/7dd61000576846a8933b5b4a92bae774 [2021-02-23 23:08:18,015 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 23:08:18,027 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 23:08:18,028 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 23:08:18,028 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 23:08:18,032 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 23:08:18,033 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 11:08:18" (1/1) ... [2021-02-23 23:08:18,034 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47933da9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:08:18, skipping insertion in model container [2021-02-23 23:08:18,034 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 11:08:18" (1/1) ... [2021-02-23 23:08:18,043 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 23:08:18,083 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 23:08:18,429 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-01-2.i[22034,22047] [2021-02-23 23:08:18,451 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-01-2.i[22307,22320] [2021-02-23 23:08:18,456 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-01-2.i[22516,22529] [2021-02-23 23:08:18,457 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-01-2.i[22586,22599] [2021-02-23 23:08:18,462 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-01-2.i[22853,22866] [2021-02-23 23:08:18,464 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-01-2.i[22961,22974] [2021-02-23 23:08:18,468 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-01-2.i[23192,23205] [2021-02-23 23:08:18,471 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-01-2.i[23272,23285] [2021-02-23 23:08:18,473 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-01-2.i[23351,23364] [2021-02-23 23:08:18,475 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-01-2.i[23484,23497] [2021-02-23 23:08:18,478 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-01-2.i[23662,23675] [2021-02-23 23:08:18,482 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-01-2.i[23740,23753] [2021-02-23 23:08:18,483 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-01-2.i[23817,23830] [2021-02-23 23:08:18,498 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 23:08:18,510 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 23:08:18,544 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-01-2.i[22034,22047] [2021-02-23 23:08:18,547 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-01-2.i[22307,22320] [2021-02-23 23:08:18,549 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-01-2.i[22516,22529] [2021-02-23 23:08:18,550 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-01-2.i[22586,22599] [2021-02-23 23:08:18,553 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-01-2.i[22853,22866] [2021-02-23 23:08:18,554 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-01-2.i[22961,22974] [2021-02-23 23:08:18,556 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-01-2.i[23192,23205] [2021-02-23 23:08:18,557 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-01-2.i[23272,23285] [2021-02-23 23:08:18,558 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-01-2.i[23351,23364] [2021-02-23 23:08:18,559 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-01-2.i[23484,23497] [2021-02-23 23:08:18,561 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-01-2.i[23662,23675] [2021-02-23 23:08:18,562 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-01-2.i[23740,23753] [2021-02-23 23:08:18,562 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-01-2.i[23817,23830] [2021-02-23 23:08:18,565 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 23:08:18,631 INFO L208 MainTranslator]: Completed translation [2021-02-23 23:08:18,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:08:18 WrapperNode [2021-02-23 23:08:18,632 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 23:08:18,633 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 23:08:18,633 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 23:08:18,634 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 23:08:18,647 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:08:18" (1/1) ... [2021-02-23 23:08:18,647 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:08:18" (1/1) ... [2021-02-23 23:08:18,679 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:08:18" (1/1) ... [2021-02-23 23:08:18,679 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:08:18" (1/1) ... [2021-02-23 23:08:18,702 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:08:18" (1/1) ... [2021-02-23 23:08:18,713 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:08:18" (1/1) ... [2021-02-23 23:08:18,718 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:08:18" (1/1) ... [2021-02-23 23:08:18,726 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 23:08:18,727 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 23:08:18,727 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 23:08:18,727 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 23:08:18,728 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:08:18" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 23:08:18,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 23:08:18,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 23:08:18,827 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 23:08:18,827 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 23:08:18,827 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-02-23 23:08:18,827 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-02-23 23:08:18,827 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-02-23 23:08:18,827 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-02-23 23:08:18,828 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-02-23 23:08:18,828 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-02-23 23:08:18,828 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-02-23 23:08:18,828 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-02-23 23:08:18,828 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-02-23 23:08:18,828 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-02-23 23:08:18,829 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-02-23 23:08:18,829 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-02-23 23:08:18,829 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-02-23 23:08:18,829 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-02-23 23:08:18,829 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-02-23 23:08:18,829 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-02-23 23:08:18,830 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-02-23 23:08:18,830 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-02-23 23:08:18,830 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-02-23 23:08:18,830 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-02-23 23:08:18,830 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-02-23 23:08:18,830 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-02-23 23:08:18,830 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-02-23 23:08:18,831 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-02-23 23:08:18,831 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-02-23 23:08:18,831 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-02-23 23:08:18,831 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-02-23 23:08:18,831 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-02-23 23:08:18,831 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-02-23 23:08:18,832 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-02-23 23:08:18,832 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-02-23 23:08:18,832 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-02-23 23:08:18,832 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-02-23 23:08:18,832 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-02-23 23:08:18,832 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-02-23 23:08:18,832 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-02-23 23:08:18,833 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-02-23 23:08:18,833 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-02-23 23:08:18,833 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-02-23 23:08:18,833 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-02-23 23:08:18,833 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-02-23 23:08:18,833 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-02-23 23:08:18,833 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-02-23 23:08:18,834 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-02-23 23:08:18,834 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-02-23 23:08:18,834 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-02-23 23:08:18,834 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-02-23 23:08:18,834 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-02-23 23:08:18,834 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-02-23 23:08:18,835 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-02-23 23:08:18,835 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 23:08:18,835 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-02-23 23:08:18,835 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-02-23 23:08:18,835 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-23 23:08:18,835 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-02-23 23:08:18,836 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-02-23 23:08:18,836 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-02-23 23:08:18,836 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-02-23 23:08:18,836 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-02-23 23:08:18,836 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 23:08:18,836 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-02-23 23:08:18,837 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-02-23 23:08:18,837 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-02-23 23:08:18,837 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-02-23 23:08:18,837 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-02-23 23:08:18,837 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-02-23 23:08:18,837 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-02-23 23:08:18,838 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-02-23 23:08:18,838 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-02-23 23:08:18,838 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-02-23 23:08:18,838 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-02-23 23:08:18,838 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-02-23 23:08:18,838 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-02-23 23:08:18,839 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-02-23 23:08:18,839 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-02-23 23:08:18,839 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-02-23 23:08:18,839 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-02-23 23:08:18,839 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-02-23 23:08:18,839 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-02-23 23:08:18,839 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-02-23 23:08:18,840 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-02-23 23:08:18,840 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-02-23 23:08:18,840 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-02-23 23:08:18,840 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-02-23 23:08:18,840 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-02-23 23:08:18,840 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-02-23 23:08:18,840 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-02-23 23:08:18,841 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-02-23 23:08:18,841 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-02-23 23:08:18,841 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-02-23 23:08:18,841 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-02-23 23:08:18,841 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-02-23 23:08:18,841 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-02-23 23:08:18,841 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-02-23 23:08:18,842 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-02-23 23:08:18,842 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-02-23 23:08:18,842 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-02-23 23:08:18,842 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-02-23 23:08:18,842 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-02-23 23:08:18,842 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-02-23 23:08:18,843 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-02-23 23:08:18,843 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-02-23 23:08:18,843 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-02-23 23:08:18,843 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 23:08:18,843 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 23:08:18,843 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-23 23:08:18,844 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-23 23:08:18,844 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 23:08:18,844 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 23:08:18,844 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 23:08:18,844 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 23:08:18,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-23 23:08:18,844 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-23 23:08:18,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 23:08:18,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 23:08:18,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 23:08:18,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 23:08:18,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 23:08:18,845 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 23:08:19,654 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 23:08:19,662 INFO L299 CfgBuilder]: Removed 30 assume(true) statements. [2021-02-23 23:08:19,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 11:08:19 BoogieIcfgContainer [2021-02-23 23:08:19,667 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 23:08:19,671 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 23:08:19,671 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 23:08:19,675 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 23:08:19,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 11:08:18" (1/3) ... [2021-02-23 23:08:19,678 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f508e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 11:08:19, skipping insertion in model container [2021-02-23 23:08:19,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:08:18" (2/3) ... [2021-02-23 23:08:19,679 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f508e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 11:08:19, skipping insertion in model container [2021-02-23 23:08:19,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 11:08:19" (3/3) ... [2021-02-23 23:08:19,681 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-01-2.i [2021-02-23 23:08:19,690 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 23:08:19,695 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2021-02-23 23:08:19,717 INFO L253 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2021-02-23 23:08:19,752 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 23:08:19,753 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 23:08:19,753 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-23 23:08:19,753 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 23:08:19,753 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 23:08:19,754 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 23:08:19,754 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 23:08:19,754 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 23:08:19,788 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states. [2021-02-23 23:08:19,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-02-23 23:08:19,804 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:08:19,805 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:08:19,806 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:08:19,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:08:19,815 INFO L82 PathProgramCache]: Analyzing trace with hash 686903667, now seen corresponding path program 1 times [2021-02-23 23:08:19,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:08:19,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [855211099] [2021-02-23 23:08:19,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:08:19,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:20,047 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:20,048 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:20,049 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:20,050 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 23:08:20,063 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:20,063 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 23:08:20,069 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:20,069 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:20,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:08:20,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:20,109 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:20,110 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:20,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:08:20,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [855211099] [2021-02-23 23:08:20,121 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 23:08:20,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-23 23:08:20,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025023192] [2021-02-23 23:08:20,128 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-23 23:08:20,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:08:20,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-23 23:08:20,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-23 23:08:20,147 INFO L87 Difference]: Start difference. First operand 188 states. Second operand 5 states. [2021-02-23 23:08:20,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:08:20,799 INFO L93 Difference]: Finished difference Result 377 states and 495 transitions. [2021-02-23 23:08:20,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 23:08:20,801 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2021-02-23 23:08:20,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:08:20,817 INFO L225 Difference]: With dead ends: 377 [2021-02-23 23:08:20,818 INFO L226 Difference]: Without dead ends: 198 [2021-02-23 23:08:20,828 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-23 23:08:20,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-02-23 23:08:20,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 168. [2021-02-23 23:08:20,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2021-02-23 23:08:20,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 178 transitions. [2021-02-23 23:08:20,917 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 178 transitions. Word has length 16 [2021-02-23 23:08:20,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:08:20,919 INFO L480 AbstractCegarLoop]: Abstraction has 168 states and 178 transitions. [2021-02-23 23:08:20,919 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-23 23:08:20,919 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 178 transitions. [2021-02-23 23:08:20,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-02-23 23:08:20,920 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:08:20,921 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:08:20,921 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 23:08:20,921 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:08:20,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:08:20,922 INFO L82 PathProgramCache]: Analyzing trace with hash -1562484955, now seen corresponding path program 1 times [2021-02-23 23:08:20,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:08:20,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1627788740] [2021-02-23 23:08:20,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:08:20,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:21,001 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:21,002 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:21,003 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:21,004 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:21,007 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:21,007 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:21,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:08:21,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:21,062 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:21,067 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:21,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:08:21,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1627788740] [2021-02-23 23:08:21,078 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 23:08:21,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 23:08:21,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072241] [2021-02-23 23:08:21,081 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 23:08:21,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:08:21,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 23:08:21,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 23:08:21,083 INFO L87 Difference]: Start difference. First operand 168 states and 178 transitions. Second operand 4 states. [2021-02-23 23:08:21,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:08:21,395 INFO L93 Difference]: Finished difference Result 174 states and 184 transitions. [2021-02-23 23:08:21,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 23:08:21,396 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2021-02-23 23:08:21,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:08:21,401 INFO L225 Difference]: With dead ends: 174 [2021-02-23 23:08:21,402 INFO L226 Difference]: Without dead ends: 169 [2021-02-23 23:08:21,403 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 23:08:21,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-02-23 23:08:21,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2021-02-23 23:08:21,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2021-02-23 23:08:21,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 179 transitions. [2021-02-23 23:08:21,442 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 179 transitions. Word has length 28 [2021-02-23 23:08:21,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:08:21,443 INFO L480 AbstractCegarLoop]: Abstraction has 169 states and 179 transitions. [2021-02-23 23:08:21,444 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 23:08:21,444 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 179 transitions. [2021-02-23 23:08:21,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-02-23 23:08:21,450 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:08:21,450 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:08:21,451 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 23:08:21,451 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:08:21,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:08:21,456 INFO L82 PathProgramCache]: Analyzing trace with hash 593562178, now seen corresponding path program 1 times [2021-02-23 23:08:21,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:08:21,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [462300072] [2021-02-23 23:08:21,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:08:21,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:21,551 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:21,552 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:21,560 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:21,561 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-23 23:08:21,571 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:21,573 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-23 23:08:21,590 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:21,591 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-23 23:08:21,602 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:21,603 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:08:21,613 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:21,614 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:21,622 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:21,624 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:21,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:08:21,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:21,674 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:21,675 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:21,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:08:21,679 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [462300072] [2021-02-23 23:08:21,679 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 23:08:21,680 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-23 23:08:21,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577312241] [2021-02-23 23:08:21,681 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-23 23:08:21,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:08:21,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-23 23:08:21,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-02-23 23:08:21,683 INFO L87 Difference]: Start difference. First operand 169 states and 179 transitions. Second operand 8 states. [2021-02-23 23:08:22,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:08:22,267 INFO L93 Difference]: Finished difference Result 263 states and 280 transitions. [2021-02-23 23:08:22,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-23 23:08:22,267 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2021-02-23 23:08:22,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:08:22,270 INFO L225 Difference]: With dead ends: 263 [2021-02-23 23:08:22,270 INFO L226 Difference]: Without dead ends: 258 [2021-02-23 23:08:22,271 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2021-02-23 23:08:22,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2021-02-23 23:08:22,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 163. [2021-02-23 23:08:22,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2021-02-23 23:08:22,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 173 transitions. [2021-02-23 23:08:22,293 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 173 transitions. Word has length 30 [2021-02-23 23:08:22,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:08:22,294 INFO L480 AbstractCegarLoop]: Abstraction has 163 states and 173 transitions. [2021-02-23 23:08:22,294 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-23 23:08:22,294 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 173 transitions. [2021-02-23 23:08:22,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-02-23 23:08:22,295 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:08:22,295 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:08:22,296 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 23:08:22,296 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:08:22,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:08:22,297 INFO L82 PathProgramCache]: Analyzing trace with hash -2077510696, now seen corresponding path program 1 times [2021-02-23 23:08:22,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:08:22,297 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [613412302] [2021-02-23 23:08:22,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:08:22,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:22,331 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:22,332 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:22,333 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:22,334 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-23 23:08:22,342 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:22,343 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:08:22,351 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:22,352 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-02-23 23:08:22,358 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:22,360 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:22,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:08:22,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:22,391 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:22,391 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:22,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:08:22,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [613412302] [2021-02-23 23:08:22,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 23:08:22,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 23:08:22,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754540981] [2021-02-23 23:08:22,396 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 23:08:22,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:08:22,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 23:08:22,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-23 23:08:22,397 INFO L87 Difference]: Start difference. First operand 163 states and 173 transitions. Second operand 6 states. [2021-02-23 23:08:22,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:08:22,836 INFO L93 Difference]: Finished difference Result 386 states and 411 transitions. [2021-02-23 23:08:22,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-23 23:08:22,837 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2021-02-23 23:08:22,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:08:22,839 INFO L225 Difference]: With dead ends: 386 [2021-02-23 23:08:22,839 INFO L226 Difference]: Without dead ends: 257 [2021-02-23 23:08:22,840 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-02-23 23:08:22,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2021-02-23 23:08:22,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 166. [2021-02-23 23:08:22,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2021-02-23 23:08:22,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 176 transitions. [2021-02-23 23:08:22,861 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 176 transitions. Word has length 36 [2021-02-23 23:08:22,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:08:22,862 INFO L480 AbstractCegarLoop]: Abstraction has 166 states and 176 transitions. [2021-02-23 23:08:22,862 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 23:08:22,862 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 176 transitions. [2021-02-23 23:08:22,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-02-23 23:08:22,863 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:08:22,863 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:08:22,864 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 23:08:22,864 INFO L428 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:08:22,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:08:22,865 INFO L82 PathProgramCache]: Analyzing trace with hash -460066315, now seen corresponding path program 1 times [2021-02-23 23:08:22,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:08:22,865 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1066014991] [2021-02-23 23:08:22,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:08:22,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:22,902 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:22,903 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:22,904 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:22,904 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 23:08:22,907 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:22,908 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 23:08:22,912 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:22,913 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 23:08:22,918 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:22,919 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:22,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:08:22,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:22,946 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:22,947 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:22,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:08:22,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1066014991] [2021-02-23 23:08:22,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 23:08:22,951 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 23:08:22,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840729572] [2021-02-23 23:08:22,952 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 23:08:22,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:08:22,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 23:08:22,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-23 23:08:22,953 INFO L87 Difference]: Start difference. First operand 166 states and 176 transitions. Second operand 6 states. [2021-02-23 23:08:23,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:08:23,328 INFO L93 Difference]: Finished difference Result 275 states and 292 transitions. [2021-02-23 23:08:23,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 23:08:23,328 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2021-02-23 23:08:23,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:08:23,330 INFO L225 Difference]: With dead ends: 275 [2021-02-23 23:08:23,330 INFO L226 Difference]: Without dead ends: 243 [2021-02-23 23:08:23,331 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-02-23 23:08:23,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2021-02-23 23:08:23,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 165. [2021-02-23 23:08:23,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2021-02-23 23:08:23,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 175 transitions. [2021-02-23 23:08:23,358 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 175 transitions. Word has length 38 [2021-02-23 23:08:23,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:08:23,360 INFO L480 AbstractCegarLoop]: Abstraction has 165 states and 175 transitions. [2021-02-23 23:08:23,360 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 23:08:23,360 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 175 transitions. [2021-02-23 23:08:23,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-02-23 23:08:23,368 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:08:23,369 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:08:23,369 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 23:08:23,369 INFO L428 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:08:23,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:08:23,370 INFO L82 PathProgramCache]: Analyzing trace with hash -1798842793, now seen corresponding path program 1 times [2021-02-23 23:08:23,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:08:23,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1458458642] [2021-02-23 23:08:23,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:08:23,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:23,446 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:23,446 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:23,447 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:23,448 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 23:08:23,451 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:23,452 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-23 23:08:23,457 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:23,457 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 23:08:23,462 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:23,463 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 23:08:23,474 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:23,474 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:23,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:08:23,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:23,503 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:23,504 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:23,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:08:23,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1458458642] [2021-02-23 23:08:23,511 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 23:08:23,511 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-23 23:08:23,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993282153] [2021-02-23 23:08:23,511 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-23 23:08:23,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:08:23,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-23 23:08:23,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-02-23 23:08:23,512 INFO L87 Difference]: Start difference. First operand 165 states and 175 transitions. Second operand 7 states. [2021-02-23 23:08:24,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:08:24,135 INFO L93 Difference]: Finished difference Result 249 states and 265 transitions. [2021-02-23 23:08:24,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-23 23:08:24,135 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 42 [2021-02-23 23:08:24,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:08:24,137 INFO L225 Difference]: With dead ends: 249 [2021-02-23 23:08:24,137 INFO L226 Difference]: Without dead ends: 245 [2021-02-23 23:08:24,138 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-02-23 23:08:24,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2021-02-23 23:08:24,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 161. [2021-02-23 23:08:24,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2021-02-23 23:08:24,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 171 transitions. [2021-02-23 23:08:24,165 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 171 transitions. Word has length 42 [2021-02-23 23:08:24,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:08:24,166 INFO L480 AbstractCegarLoop]: Abstraction has 161 states and 171 transitions. [2021-02-23 23:08:24,166 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-23 23:08:24,166 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 171 transitions. [2021-02-23 23:08:24,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-02-23 23:08:24,167 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:08:24,167 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:08:24,168 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-23 23:08:24,168 INFO L428 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:08:24,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:08:24,168 INFO L82 PathProgramCache]: Analyzing trace with hash 72837122, now seen corresponding path program 1 times [2021-02-23 23:08:24,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:08:24,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [579688656] [2021-02-23 23:08:24,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:08:24,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:24,201 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:24,202 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:24,202 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:24,203 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:08:24,206 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:24,207 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:24,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:08:24,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:24,231 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:24,232 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:24,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:08:24,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [579688656] [2021-02-23 23:08:24,235 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 23:08:24,236 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 23:08:24,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414582524] [2021-02-23 23:08:24,236 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 23:08:24,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:08:24,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 23:08:24,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 23:08:24,237 INFO L87 Difference]: Start difference. First operand 161 states and 171 transitions. Second operand 4 states. [2021-02-23 23:08:24,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:08:24,527 INFO L93 Difference]: Finished difference Result 271 states and 291 transitions. [2021-02-23 23:08:24,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 23:08:24,527 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2021-02-23 23:08:24,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:08:24,532 INFO L225 Difference]: With dead ends: 271 [2021-02-23 23:08:24,532 INFO L226 Difference]: Without dead ends: 200 [2021-02-23 23:08:24,535 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 23:08:24,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-02-23 23:08:24,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 164. [2021-02-23 23:08:24,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2021-02-23 23:08:24,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 175 transitions. [2021-02-23 23:08:24,559 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 175 transitions. Word has length 46 [2021-02-23 23:08:24,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:08:24,559 INFO L480 AbstractCegarLoop]: Abstraction has 164 states and 175 transitions. [2021-02-23 23:08:24,559 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 23:08:24,559 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 175 transitions. [2021-02-23 23:08:24,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-02-23 23:08:24,562 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:08:24,562 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] [2021-02-23 23:08:24,563 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-23 23:08:24,563 INFO L428 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:08:24,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:08:24,564 INFO L82 PathProgramCache]: Analyzing trace with hash 1276238821, now seen corresponding path program 1 times [2021-02-23 23:08:24,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:08:24,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1405107584] [2021-02-23 23:08:24,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:08:24,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:24,618 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:24,619 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:24,623 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:24,624 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 23:08:24,630 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:24,631 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:24,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:08:24,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:24,656 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:24,657 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:24,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:08:24,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1405107584] [2021-02-23 23:08:24,661 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 23:08:24,661 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 23:08:24,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537497880] [2021-02-23 23:08:24,663 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 23:08:24,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:08:24,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 23:08:24,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 23:08:24,665 INFO L87 Difference]: Start difference. First operand 164 states and 175 transitions. Second operand 4 states. [2021-02-23 23:08:24,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:08:24,951 INFO L93 Difference]: Finished difference Result 164 states and 175 transitions. [2021-02-23 23:08:24,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 23:08:24,951 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 48 [2021-02-23 23:08:24,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:08:24,954 INFO L225 Difference]: With dead ends: 164 [2021-02-23 23:08:24,954 INFO L226 Difference]: Without dead ends: 162 [2021-02-23 23:08:24,955 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 23:08:24,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-02-23 23:08:24,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2021-02-23 23:08:24,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2021-02-23 23:08:24,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 173 transitions. [2021-02-23 23:08:24,978 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 173 transitions. Word has length 48 [2021-02-23 23:08:24,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:08:24,981 INFO L480 AbstractCegarLoop]: Abstraction has 162 states and 173 transitions. [2021-02-23 23:08:24,981 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 23:08:24,981 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 173 transitions. [2021-02-23 23:08:24,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-02-23 23:08:24,982 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:08:24,982 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:08:24,982 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-23 23:08:24,982 INFO L428 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:08:24,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:08:24,983 INFO L82 PathProgramCache]: Analyzing trace with hash -4183988, now seen corresponding path program 1 times [2021-02-23 23:08:24,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:08:24,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1140126761] [2021-02-23 23:08:24,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:08:25,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:25,050 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:25,051 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:25,052 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:25,053 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-23 23:08:25,060 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:25,061 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-23 23:08:25,073 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:25,073 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-23 23:08:25,085 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:25,087 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-23 23:08:25,098 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:25,100 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:08:25,110 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:25,111 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:08:25,126 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:25,127 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:25,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:08:25,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:25,162 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:25,163 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:25,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:08:25,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1140126761] [2021-02-23 23:08:25,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 23:08:25,174 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 23:08:25,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563829428] [2021-02-23 23:08:25,174 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 23:08:25,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:08:25,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 23:08:25,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-23 23:08:25,175 INFO L87 Difference]: Start difference. First operand 162 states and 173 transitions. Second operand 9 states. [2021-02-23 23:08:25,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:08:25,849 INFO L93 Difference]: Finished difference Result 359 states and 386 transitions. [2021-02-23 23:08:25,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-23 23:08:25,850 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 52 [2021-02-23 23:08:25,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:08:25,852 INFO L225 Difference]: With dead ends: 359 [2021-02-23 23:08:25,852 INFO L226 Difference]: Without dead ends: 287 [2021-02-23 23:08:25,853 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2021-02-23 23:08:25,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-02-23 23:08:25,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 181. [2021-02-23 23:08:25,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2021-02-23 23:08:25,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 193 transitions. [2021-02-23 23:08:25,878 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 193 transitions. Word has length 52 [2021-02-23 23:08:25,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:08:25,879 INFO L480 AbstractCegarLoop]: Abstraction has 181 states and 193 transitions. [2021-02-23 23:08:25,879 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 23:08:25,879 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 193 transitions. [2021-02-23 23:08:25,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-02-23 23:08:25,880 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:08:25,880 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:08:25,880 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-23 23:08:25,880 INFO L428 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:08:25,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:08:25,881 INFO L82 PathProgramCache]: Analyzing trace with hash -674720819, now seen corresponding path program 1 times [2021-02-23 23:08:25,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:08:25,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1848527905] [2021-02-23 23:08:25,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:08:25,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:25,910 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:25,910 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:25,911 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:25,911 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:25,914 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:25,914 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:25,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:08:25,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:25,937 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:25,937 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:25,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:08:25,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1848527905] [2021-02-23 23:08:25,941 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 23:08:25,941 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 23:08:25,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873451432] [2021-02-23 23:08:25,942 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 23:08:25,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:08:25,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 23:08:25,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 23:08:25,943 INFO L87 Difference]: Start difference. First operand 181 states and 193 transitions. Second operand 4 states. [2021-02-23 23:08:26,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:08:26,177 INFO L93 Difference]: Finished difference Result 187 states and 199 transitions. [2021-02-23 23:08:26,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 23:08:26,178 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2021-02-23 23:08:26,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:08:26,179 INFO L225 Difference]: With dead ends: 187 [2021-02-23 23:08:26,179 INFO L226 Difference]: Without dead ends: 182 [2021-02-23 23:08:26,180 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 23:08:26,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-02-23 23:08:26,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2021-02-23 23:08:26,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2021-02-23 23:08:26,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 194 transitions. [2021-02-23 23:08:26,204 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 194 transitions. Word has length 56 [2021-02-23 23:08:26,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:08:26,204 INFO L480 AbstractCegarLoop]: Abstraction has 182 states and 194 transitions. [2021-02-23 23:08:26,204 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 23:08:26,204 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 194 transitions. [2021-02-23 23:08:26,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-02-23 23:08:26,205 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:08:26,205 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:08:26,206 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-23 23:08:26,206 INFO L428 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:08:26,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:08:26,206 INFO L82 PathProgramCache]: Analyzing trace with hash -1815431908, now seen corresponding path program 1 times [2021-02-23 23:08:26,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:08:26,207 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [342603511] [2021-02-23 23:08:26,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:08:26,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:26,240 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:26,241 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:26,242 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:26,242 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-23 23:08:26,250 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:26,250 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-23 23:08:26,278 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:26,279 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-23 23:08:26,290 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:26,291 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:08:26,300 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:26,300 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:08:26,310 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:26,311 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:26,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:08:26,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:26,340 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:26,341 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:26,356 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-23 23:08:26,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [342603511] [2021-02-23 23:08:26,357 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 23:08:26,357 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-23 23:08:26,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152617508] [2021-02-23 23:08:26,357 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-23 23:08:26,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:08:26,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-23 23:08:26,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-02-23 23:08:26,358 INFO L87 Difference]: Start difference. First operand 182 states and 194 transitions. Second operand 8 states. [2021-02-23 23:08:26,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:08:26,898 INFO L93 Difference]: Finished difference Result 270 states and 289 transitions. [2021-02-23 23:08:26,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-23 23:08:26,899 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2021-02-23 23:08:26,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:08:26,901 INFO L225 Difference]: With dead ends: 270 [2021-02-23 23:08:26,901 INFO L226 Difference]: Without dead ends: 240 [2021-02-23 23:08:26,902 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-02-23 23:08:26,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2021-02-23 23:08:26,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 221. [2021-02-23 23:08:26,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2021-02-23 23:08:26,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 241 transitions. [2021-02-23 23:08:26,933 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 241 transitions. Word has length 57 [2021-02-23 23:08:26,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:08:26,934 INFO L480 AbstractCegarLoop]: Abstraction has 221 states and 241 transitions. [2021-02-23 23:08:26,934 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-23 23:08:26,934 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 241 transitions. [2021-02-23 23:08:26,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-02-23 23:08:26,935 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:08:26,935 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:08:26,935 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-02-23 23:08:26,935 INFO L428 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:08:26,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:08:26,936 INFO L82 PathProgramCache]: Analyzing trace with hash -1929887829, now seen corresponding path program 1 times [2021-02-23 23:08:26,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:08:26,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1844229205] [2021-02-23 23:08:26,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:08:26,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:27,049 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:27,050 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:27,051 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:27,051 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 23:08:27,061 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:27,066 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 23:08:27,074 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:27,074 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 23:08:27,085 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:27,086 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-23 23:08:27,101 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:27,101 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-02-23 23:08:27,120 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:27,122 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-23 23:08:27,129 WARN L141 QuantifierPusher]: treesize reduction 33, result has 56.0 percent of original size [2021-02-23 23:08:27,131 WARN L147 QuantifierPusher]: treesize reduction 33, result has 56.0 percent of original size 42 [2021-02-23 23:08:27,176 WARN L141 QuantifierPusher]: treesize reduction 19, result has 69.4 percent of original size [2021-02-23 23:08:27,177 WARN L147 QuantifierPusher]: treesize reduction 19, result has 69.4 percent of original size 43 [2021-02-23 23:08:27,205 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:27,206 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-02-23 23:08:27,227 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:27,228 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-23 23:08:27,249 WARN L141 QuantifierPusher]: treesize reduction 10, result has 68.8 percent of original size [2021-02-23 23:08:27,250 WARN L147 QuantifierPusher]: treesize reduction 10, result has 68.8 percent of original size 22 [2021-02-23 23:08:27,275 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:27,275 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:08:27,295 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:27,295 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:27,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:08:27,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:27,336 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:27,337 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:27,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:08:27,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1844229205] [2021-02-23 23:08:27,361 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 23:08:27,361 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-23 23:08:27,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014127324] [2021-02-23 23:08:27,361 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-23 23:08:27,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:08:27,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-23 23:08:27,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-02-23 23:08:27,362 INFO L87 Difference]: Start difference. First operand 221 states and 241 transitions. Second operand 14 states. [2021-02-23 23:08:29,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:08:29,412 INFO L93 Difference]: Finished difference Result 665 states and 719 transitions. [2021-02-23 23:08:29,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-02-23 23:08:29,412 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 57 [2021-02-23 23:08:29,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:08:29,416 INFO L225 Difference]: With dead ends: 665 [2021-02-23 23:08:29,416 INFO L226 Difference]: Without dead ends: 662 [2021-02-23 23:08:29,417 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=252, Invalid=804, Unknown=0, NotChecked=0, Total=1056 [2021-02-23 23:08:29,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2021-02-23 23:08:29,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 240. [2021-02-23 23:08:29,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2021-02-23 23:08:29,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 262 transitions. [2021-02-23 23:08:29,475 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 262 transitions. Word has length 57 [2021-02-23 23:08:29,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:08:29,475 INFO L480 AbstractCegarLoop]: Abstraction has 240 states and 262 transitions. [2021-02-23 23:08:29,475 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-23 23:08:29,476 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 262 transitions. [2021-02-23 23:08:29,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-02-23 23:08:29,476 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:08:29,476 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:08:29,477 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-02-23 23:08:29,477 INFO L428 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:08:29,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:08:29,477 INFO L82 PathProgramCache]: Analyzing trace with hash -963591574, now seen corresponding path program 1 times [2021-02-23 23:08:29,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:08:29,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [244840413] [2021-02-23 23:08:29,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:08:29,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:29,504 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:29,504 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:29,505 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:29,506 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-23 23:08:29,512 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:29,513 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-23 23:08:29,524 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:29,525 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-23 23:08:29,535 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:29,535 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:08:29,544 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:29,545 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:29,553 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:29,554 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:29,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:08:29,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:29,580 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:29,580 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:29,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:08:29,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [244840413] [2021-02-23 23:08:29,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 23:08:29,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-23 23:08:29,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595195737] [2021-02-23 23:08:29,586 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-23 23:08:29,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:08:29,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-23 23:08:29,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-02-23 23:08:29,587 INFO L87 Difference]: Start difference. First operand 240 states and 262 transitions. Second operand 8 states. [2021-02-23 23:08:30,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:08:30,099 INFO L93 Difference]: Finished difference Result 259 states and 283 transitions. [2021-02-23 23:08:30,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-23 23:08:30,100 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2021-02-23 23:08:30,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:08:30,102 INFO L225 Difference]: With dead ends: 259 [2021-02-23 23:08:30,102 INFO L226 Difference]: Without dead ends: 254 [2021-02-23 23:08:30,102 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 [2021-02-23 23:08:30,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2021-02-23 23:08:30,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 234. [2021-02-23 23:08:30,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2021-02-23 23:08:30,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 256 transitions. [2021-02-23 23:08:30,150 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 256 transitions. Word has length 58 [2021-02-23 23:08:30,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:08:30,150 INFO L480 AbstractCegarLoop]: Abstraction has 234 states and 256 transitions. [2021-02-23 23:08:30,150 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-23 23:08:30,151 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 256 transitions. [2021-02-23 23:08:30,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-02-23 23:08:30,151 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:08:30,152 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:08:30,152 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-02-23 23:08:30,152 INFO L428 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:08:30,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:08:30,152 INFO L82 PathProgramCache]: Analyzing trace with hash 450193912, now seen corresponding path program 1 times [2021-02-23 23:08:30,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:08:30,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [662273780] [2021-02-23 23:08:30,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:08:30,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:30,221 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:30,222 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:30,223 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:30,223 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 23:08:30,229 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:30,229 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 23:08:30,237 WARN L141 QuantifierPusher]: treesize reduction 9, result has 55.0 percent of original size [2021-02-23 23:08:30,238 WARN L147 QuantifierPusher]: treesize reduction 9, result has 55.0 percent of original size 11 [2021-02-23 23:08:30,247 WARN L141 QuantifierPusher]: treesize reduction 15, result has 60.5 percent of original size [2021-02-23 23:08:30,248 WARN L147 QuantifierPusher]: treesize reduction 15, result has 60.5 percent of original size 23 [2021-02-23 23:08:30,264 WARN L141 QuantifierPusher]: treesize reduction 9, result has 76.3 percent of original size [2021-02-23 23:08:30,265 WARN L147 QuantifierPusher]: treesize reduction 9, result has 76.3 percent of original size 29 [2021-02-23 23:08:30,297 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:30,298 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-02-23 23:08:30,324 WARN L141 QuantifierPusher]: treesize reduction 27, result has 69.0 percent of original size [2021-02-23 23:08:30,325 WARN L147 QuantifierPusher]: treesize reduction 27, result has 69.0 percent of original size 60 [2021-02-23 23:08:30,380 WARN L141 QuantifierPusher]: treesize reduction 15, result has 72.2 percent of original size [2021-02-23 23:08:30,382 WARN L147 QuantifierPusher]: treesize reduction 15, result has 72.2 percent of original size 39 [2021-02-23 23:08:30,408 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:30,409 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-02-23 23:08:30,436 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:30,437 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-23 23:08:30,457 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:30,457 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-23 23:08:30,481 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:30,482 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:08:30,504 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:30,505 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:30,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:08:30,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:30,549 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:30,550 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:30,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:08:30,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [662273780] [2021-02-23 23:08:30,575 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 23:08:30,575 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-23 23:08:30,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776636197] [2021-02-23 23:08:30,576 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-23 23:08:30,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:08:30,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-23 23:08:30,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2021-02-23 23:08:30,577 INFO L87 Difference]: Start difference. First operand 234 states and 256 transitions. Second operand 15 states. [2021-02-23 23:08:32,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:08:32,850 INFO L93 Difference]: Finished difference Result 650 states and 704 transitions. [2021-02-23 23:08:32,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-02-23 23:08:32,851 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 61 [2021-02-23 23:08:32,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:08:32,855 INFO L225 Difference]: With dead ends: 650 [2021-02-23 23:08:32,855 INFO L226 Difference]: Without dead ends: 647 [2021-02-23 23:08:32,856 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 [2021-02-23 23:08:32,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2021-02-23 23:08:32,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 238. [2021-02-23 23:08:32,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2021-02-23 23:08:32,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 260 transitions. [2021-02-23 23:08:32,913 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 260 transitions. Word has length 61 [2021-02-23 23:08:32,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:08:32,913 INFO L480 AbstractCegarLoop]: Abstraction has 238 states and 260 transitions. [2021-02-23 23:08:32,913 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-02-23 23:08:32,913 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 260 transitions. [2021-02-23 23:08:32,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-02-23 23:08:32,914 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:08:32,914 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:08:32,914 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-02-23 23:08:32,915 INFO L428 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:08:32,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:08:32,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1797611805, now seen corresponding path program 1 times [2021-02-23 23:08:32,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:08:32,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2106668346] [2021-02-23 23:08:32,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:08:32,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:32,938 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:32,939 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:32,940 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:32,940 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 23:08:32,946 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:32,946 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:32,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:08:32,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:32,966 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:32,967 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:32,970 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-23 23:08:32,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2106668346] [2021-02-23 23:08:32,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 23:08:32,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 23:08:32,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866233071] [2021-02-23 23:08:32,971 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 23:08:32,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:08:32,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 23:08:32,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 23:08:32,972 INFO L87 Difference]: Start difference. First operand 238 states and 260 transitions. Second operand 4 states. [2021-02-23 23:08:33,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:08:33,311 INFO L93 Difference]: Finished difference Result 243 states and 265 transitions. [2021-02-23 23:08:33,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 23:08:33,312 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2021-02-23 23:08:33,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:08:33,313 INFO L225 Difference]: With dead ends: 243 [2021-02-23 23:08:33,314 INFO L226 Difference]: Without dead ends: 241 [2021-02-23 23:08:33,314 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 23:08:33,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2021-02-23 23:08:33,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 236. [2021-02-23 23:08:33,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2021-02-23 23:08:33,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 258 transitions. [2021-02-23 23:08:33,360 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 258 transitions. Word has length 62 [2021-02-23 23:08:33,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:08:33,360 INFO L480 AbstractCegarLoop]: Abstraction has 236 states and 258 transitions. [2021-02-23 23:08:33,360 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 23:08:33,360 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 258 transitions. [2021-02-23 23:08:33,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-02-23 23:08:33,361 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:08:33,361 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:08:33,361 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-02-23 23:08:33,361 INFO L428 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:08:33,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:08:33,362 INFO L82 PathProgramCache]: Analyzing trace with hash -23328119, now seen corresponding path program 1 times [2021-02-23 23:08:33,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:08:33,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1831981878] [2021-02-23 23:08:33,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:08:33,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:33,393 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:33,393 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:33,394 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:33,395 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-23 23:08:33,401 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:33,402 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-23 23:08:33,405 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:33,405 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-23 23:08:33,412 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:33,413 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:08:33,420 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:33,421 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:08:33,429 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:33,430 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:33,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:08:33,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:33,454 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:33,455 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:33,471 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:08:33,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1831981878] [2021-02-23 23:08:33,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 23:08:33,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-02-23 23:08:33,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002622539] [2021-02-23 23:08:33,472 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-23 23:08:33,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:08:33,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-23 23:08:33,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-02-23 23:08:33,473 INFO L87 Difference]: Start difference. First operand 236 states and 258 transitions. Second operand 7 states. [2021-02-23 23:08:34,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:08:34,074 INFO L93 Difference]: Finished difference Result 387 states and 421 transitions. [2021-02-23 23:08:34,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-23 23:08:34,075 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 63 [2021-02-23 23:08:34,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:08:34,076 INFO L225 Difference]: With dead ends: 387 [2021-02-23 23:08:34,076 INFO L226 Difference]: Without dead ends: 278 [2021-02-23 23:08:34,077 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-02-23 23:08:34,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2021-02-23 23:08:34,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 236. [2021-02-23 23:08:34,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2021-02-23 23:08:34,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 256 transitions. [2021-02-23 23:08:34,131 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 256 transitions. Word has length 63 [2021-02-23 23:08:34,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:08:34,131 INFO L480 AbstractCegarLoop]: Abstraction has 236 states and 256 transitions. [2021-02-23 23:08:34,131 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-23 23:08:34,131 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 256 transitions. [2021-02-23 23:08:34,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-02-23 23:08:34,132 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:08:34,132 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:08:34,132 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-02-23 23:08:34,133 INFO L428 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:08:34,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:08:34,133 INFO L82 PathProgramCache]: Analyzing trace with hash -1294737916, now seen corresponding path program 1 times [2021-02-23 23:08:34,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:08:34,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1682647172] [2021-02-23 23:08:34,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:08:34,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:34,173 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:34,173 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:34,174 WARN L141 QuantifierPusher]: treesize reduction 4, result has 86.7 percent of original size [2021-02-23 23:08:34,175 WARN L147 QuantifierPusher]: treesize reduction 4, result has 86.7 percent of original size 26 [2021-02-23 23:08:34,194 WARN L141 QuantifierPusher]: treesize reduction 4, result has 95.9 percent of original size [2021-02-23 23:08:34,195 WARN L147 QuantifierPusher]: treesize reduction 4, result has 95.9 percent of original size 94 [2021-02-23 23:08:34,233 WARN L141 QuantifierPusher]: treesize reduction 4, result has 95.9 percent of original size [2021-02-23 23:08:34,235 WARN L147 QuantifierPusher]: treesize reduction 4, result has 95.9 percent of original size 94 [2021-02-23 23:08:34,283 WARN L141 QuantifierPusher]: treesize reduction 4, result has 95.9 percent of original size [2021-02-23 23:08:34,284 WARN L147 QuantifierPusher]: treesize reduction 4, result has 95.9 percent of original size 94 [2021-02-23 23:08:34,332 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:34,333 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-23 23:08:34,347 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:34,348 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:08:34,362 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:34,363 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:08:34,375 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:34,376 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:34,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:08:34,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:34,415 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:34,416 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:34,431 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:08:34,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1682647172] [2021-02-23 23:08:34,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 23:08:34,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-02-23 23:08:34,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506680643] [2021-02-23 23:08:34,432 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-23 23:08:34,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:08:34,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-23 23:08:34,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-02-23 23:08:34,433 INFO L87 Difference]: Start difference. First operand 236 states and 256 transitions. Second operand 10 states. [2021-02-23 23:08:35,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:08:35,373 INFO L93 Difference]: Finished difference Result 500 states and 541 transitions. [2021-02-23 23:08:35,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-23 23:08:35,374 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 66 [2021-02-23 23:08:35,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:08:35,376 INFO L225 Difference]: With dead ends: 500 [2021-02-23 23:08:35,376 INFO L226 Difference]: Without dead ends: 430 [2021-02-23 23:08:35,377 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-02-23 23:08:35,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2021-02-23 23:08:35,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 322. [2021-02-23 23:08:35,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 322 states. [2021-02-23 23:08:35,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 355 transitions. [2021-02-23 23:08:35,478 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 355 transitions. Word has length 66 [2021-02-23 23:08:35,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:08:35,478 INFO L480 AbstractCegarLoop]: Abstraction has 322 states and 355 transitions. [2021-02-23 23:08:35,478 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-23 23:08:35,478 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 355 transitions. [2021-02-23 23:08:35,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-02-23 23:08:35,479 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:08:35,479 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:08:35,479 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-02-23 23:08:35,480 INFO L428 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:08:35,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:08:35,480 INFO L82 PathProgramCache]: Analyzing trace with hash 1944566536, now seen corresponding path program 1 times [2021-02-23 23:08:35,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:08:35,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1797285348] [2021-02-23 23:08:35,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:08:35,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:35,505 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:35,506 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:35,506 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:35,506 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:08:35,510 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:35,512 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:35,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:08:35,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:35,535 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:35,536 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:35,541 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:08:35,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1797285348] [2021-02-23 23:08:35,542 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 23:08:35,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 23:08:35,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256323875] [2021-02-23 23:08:35,542 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 23:08:35,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:08:35,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 23:08:35,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 23:08:35,543 INFO L87 Difference]: Start difference. First operand 322 states and 355 transitions. Second operand 4 states. [2021-02-23 23:08:35,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:08:35,989 INFO L93 Difference]: Finished difference Result 568 states and 640 transitions. [2021-02-23 23:08:35,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 23:08:35,990 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 68 [2021-02-23 23:08:35,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:08:35,994 INFO L225 Difference]: With dead ends: 568 [2021-02-23 23:08:35,995 INFO L226 Difference]: Without dead ends: 432 [2021-02-23 23:08:35,996 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 23:08:35,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2021-02-23 23:08:36,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 371. [2021-02-23 23:08:36,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 371 states. [2021-02-23 23:08:36,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 413 transitions. [2021-02-23 23:08:36,104 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 413 transitions. Word has length 68 [2021-02-23 23:08:36,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:08:36,104 INFO L480 AbstractCegarLoop]: Abstraction has 371 states and 413 transitions. [2021-02-23 23:08:36,104 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 23:08:36,104 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 413 transitions. [2021-02-23 23:08:36,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-02-23 23:08:36,105 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:08:36,105 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:08:36,106 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-02-23 23:08:36,106 INFO L428 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:08:36,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:08:36,106 INFO L82 PathProgramCache]: Analyzing trace with hash -836770595, now seen corresponding path program 1 times [2021-02-23 23:08:36,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:08:36,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2110785368] [2021-02-23 23:08:36,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:08:36,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:36,145 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:36,145 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:36,147 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:36,147 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-02-23 23:08:36,179 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:36,180 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-23 23:08:36,189 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:36,189 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-23 23:08:36,198 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:36,199 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-23 23:08:36,209 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:36,210 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:08:36,221 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:36,221 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:08:36,233 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:36,234 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:08:36,246 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:36,247 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:36,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:08:36,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:36,276 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:36,277 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:36,291 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:08:36,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2110785368] [2021-02-23 23:08:36,291 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 23:08:36,292 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-02-23 23:08:36,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570212884] [2021-02-23 23:08:36,293 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-23 23:08:36,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:08:36,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-23 23:08:36,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-02-23 23:08:36,294 INFO L87 Difference]: Start difference. First operand 371 states and 413 transitions. Second operand 10 states. [2021-02-23 23:08:37,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:08:37,473 INFO L93 Difference]: Finished difference Result 610 states and 676 transitions. [2021-02-23 23:08:37,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-23 23:08:37,474 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 71 [2021-02-23 23:08:37,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:08:37,477 INFO L225 Difference]: With dead ends: 610 [2021-02-23 23:08:37,477 INFO L226 Difference]: Without dead ends: 550 [2021-02-23 23:08:37,478 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2021-02-23 23:08:37,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2021-02-23 23:08:37,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 418. [2021-02-23 23:08:37,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418 states. [2021-02-23 23:08:37,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 468 transitions. [2021-02-23 23:08:37,611 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 468 transitions. Word has length 71 [2021-02-23 23:08:37,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:08:37,611 INFO L480 AbstractCegarLoop]: Abstraction has 418 states and 468 transitions. [2021-02-23 23:08:37,611 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-23 23:08:37,611 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 468 transitions. [2021-02-23 23:08:37,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-02-23 23:08:37,613 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:08:37,613 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:08:37,613 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-02-23 23:08:37,613 INFO L428 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:08:37,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:08:37,614 INFO L82 PathProgramCache]: Analyzing trace with hash -1109198014, now seen corresponding path program 1 times [2021-02-23 23:08:37,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:08:37,614 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1119645936] [2021-02-23 23:08:37,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:08:37,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 23:08:37,636 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 23:08:37,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 23:08:37,653 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 23:08:37,695 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 23:08:37,695 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 23:08:37,696 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-02-23 23:08:37,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 11:08:37 BoogieIcfgContainer [2021-02-23 23:08:37,763 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 23:08:37,764 INFO L168 Benchmark]: Toolchain (without parser) took 19747.22 ms. Allocated memory was 151.0 MB in the beginning and 377.5 MB in the end (delta: 226.5 MB). Free memory was 126.1 MB in the beginning and 180.1 MB in the end (delta: -54.0 MB). Peak memory consumption was 173.3 MB. Max. memory is 8.0 GB. [2021-02-23 23:08:37,764 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 151.0 MB. Free memory was 124.8 MB in the beginning and 124.7 MB in the end (delta: 80.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 23:08:37,765 INFO L168 Benchmark]: CACSL2BoogieTranslator took 604.28 ms. Allocated memory is still 151.0 MB. Free memory was 125.0 MB in the beginning and 132.2 MB in the end (delta: -7.3 MB). Peak memory consumption was 28.8 MB. Max. memory is 8.0 GB. [2021-02-23 23:08:37,765 INFO L168 Benchmark]: Boogie Preprocessor took 92.87 ms. Allocated memory is still 151.0 MB. Free memory was 132.2 MB in the beginning and 129.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-02-23 23:08:37,765 INFO L168 Benchmark]: RCFGBuilder took 940.69 ms. Allocated memory is still 151.0 MB. Free memory was 129.1 MB in the beginning and 127.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 62.2 MB. Max. memory is 8.0 GB. [2021-02-23 23:08:37,766 INFO L168 Benchmark]: TraceAbstraction took 18092.21 ms. Allocated memory was 151.0 MB in the beginning and 377.5 MB in the end (delta: 226.5 MB). Free memory was 127.2 MB in the beginning and 180.1 MB in the end (delta: -53.0 MB). Peak memory consumption was 173.5 MB. Max. memory is 8.0 GB. [2021-02-23 23:08:37,767 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 151.0 MB. Free memory was 124.8 MB in the beginning and 124.7 MB in the end (delta: 80.2 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 604.28 ms. Allocated memory is still 151.0 MB. Free memory was 125.0 MB in the beginning and 132.2 MB in the end (delta: -7.3 MB). Peak memory consumption was 28.8 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 92.87 ms. Allocated memory is still 151.0 MB. Free memory was 132.2 MB in the beginning and 129.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 940.69 ms. Allocated memory is still 151.0 MB. Free memory was 129.1 MB in the beginning and 127.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 62.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 18092.21 ms. Allocated memory was 151.0 MB in the beginning and 377.5 MB in the end (delta: 226.5 MB). Free memory was 127.2 MB in the beginning and 180.1 MB in the end (delta: -53.0 MB). Peak memory consumption was 173.5 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)); VAL [list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1003] list->next = ((void*)0) VAL [list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1004] COND FALSE !(!(list != ((void*)0))) VAL [list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1004] COND FALSE !(__VERIFIER_nondet_int()) VAL [__VERIFIER_nondet_int()=0, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1004] list->inner = malloc(sizeof(SLL)) VAL [list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1004] EXPR list->inner VAL [list={-1:0}, list->inner={-2:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1004] list->inner->next = ((void*)0) VAL [list={-1:0}, list->inner={-2:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1004] EXPR list->inner VAL [list={-1:0}, list->inner={-2:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1004] list->inner->inner = ((void*)0) VAL [list={-1:0}, list->inner={-2:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1004] EXPR list->inner VAL [list={-1:0}, list->inner={-2:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1004] EXPR list->inner != ((void*)0) || list->inner == ((void*)0) VAL [list={-1:0}, list->inner={-2:0}, list->inner != ((void*)0) || list->inner == ((void*)0)=1, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1004] COND FALSE !(!(list->inner != ((void*)0) || list->inner == ((void*)0))) VAL [list={-1:0}, list->inner={-2:0}, list->inner != ((void*)0) || list->inner == ((void*)0)=1, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1006] SLL* end = list; VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1009] COND FALSE !(__VERIFIER_nondet_int()) VAL [__VERIFIER_nondet_int()=0, end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1019] end = ((void*)0) VAL [end={0:0}, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1020] end = list VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1023] COND FALSE !(!(((void*)0) != end)) VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1025] COND TRUE ((void*)0) != end VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1027] int len = 0; VAL [end={-1:0}, len=0, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1028] EXPR end->inner VAL [end={-1:0}, end->inner={-2:0}, len=0, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1028] SLL* inner = end->inner; VAL [end={-1:0}, end->inner={-2:0}, inner={-2:0}, len=0, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1029] COND TRUE ((void*)0) != inner VAL [end={-1:0}, inner={-2:0}, len=0, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1031] COND TRUE len == 0 VAL [end={-1:0}, inner={-2:0}, len=0, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1032] len = 1 VAL [end={-1:0}, inner={-2:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1035] COND FALSE !(!(((void*)0) != inner)) VAL [end={-1:0}, inner={-2:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1036] EXPR inner->inner VAL [end={-1:0}, inner={-2:0}, inner->inner={0:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1036] COND FALSE !(!(((void*)0) == inner->inner)) VAL [end={-1:0}, inner={-2:0}, inner->inner={0:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1037] EXPR inner->next VAL [end={-1:0}, inner={-2:0}, inner->next={0:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1037] COND FALSE !(!(((void*)0) == inner->next)) VAL [end={-1:0}, inner={-2:0}, inner->next={0:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1038] EXPR inner->inner VAL [end={-1:0}, inner={-2:0}, inner->inner={0:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1038] inner = inner->inner VAL [end={-1:0}, inner={0:0}, inner->inner={0:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1039] COND TRUE len == 1 VAL [end={-1:0}, inner={0:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1040] EXPR inner->inner VAL [end={-1:0}, inner={0:0}, inner->inner={54:-7}, len=1, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1040] inner = inner->inner VAL [end={-1:0}, inner={54:-7}, inner->inner={54:-7}, len=1, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1029] COND TRUE ((void*)0) != inner VAL [end={-1:0}, inner={54:-7}, len=1, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1031] COND FALSE !(len == 0) VAL [end={-1:0}, inner={54:-7}, len=1, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1034] len = 2 VAL [end={-1:0}, inner={54:-7}, len=2, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1035] COND FALSE !(!(((void*)0) != inner)) VAL [end={-1:0}, inner={54:-7}, len=2, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1036] EXPR inner->inner VAL [end={-1:0}, inner={54:-7}, inner->inner={58:50}, len=2, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1036] COND TRUE !(((void*)0) == inner->inner) VAL [end={-1:0}, inner={54:-7}, inner->inner={58:50}, len=2, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1036] reach_error() VAL [end={-1:0}, inner={54:-7}, len=2, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 193 locations, 13 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 17.9s, OverallIterations: 20, TraceHistogramMax: 2, AutomataDifference: 13.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3245 SDtfs, 5021 SDslu, 9911 SDs, 0 SdLazy, 6728 SolverSat, 220 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 254 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 437 ImplicationChecksByTransitivity, 4.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=418occurred in iteration=19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 19 MinimizatonAttempts, 1738 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 1032 NumberOfCodeBlocks, 1032 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 936 ConstructedInterpolants, 0 QuantifiedInterpolants, 385486 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 19 InterpolantComputations, 16 PerfectInterpolantSequences, 12/16 InterpolantCoveringCapability, 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...