/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-b030c9e [2022-03-20 03:20:54,219 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-20 03:20:54,222 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-20 03:20:54,268 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-20 03:20:54,268 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-20 03:20:54,269 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-20 03:20:54,272 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-20 03:20:54,275 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-20 03:20:54,277 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-20 03:20:54,281 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-20 03:20:54,282 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-20 03:20:54,283 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-20 03:20:54,284 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-20 03:20:54,286 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-20 03:20:54,287 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-20 03:20:54,289 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-20 03:20:54,290 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-20 03:20:54,291 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-20 03:20:54,293 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-20 03:20:54,298 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-20 03:20:54,300 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-20 03:20:54,301 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-20 03:20:54,302 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-20 03:20:54,302 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-20 03:20:54,304 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-20 03:20:54,308 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-03-20 03:20:54,309 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-03-20 03:20:54,309 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-03-20 03:20:54,310 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-03-20 03:20:54,310 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-03-20 03:20:54,311 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-03-20 03:20:54,311 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-03-20 03:20:54,312 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-03-20 03:20:54,313 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-03-20 03:20:54,313 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-03-20 03:20:54,314 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-03-20 03:20:54,314 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-03-20 03:20:54,314 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-03-20 03:20:54,315 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-03-20 03:20:54,315 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-20 03:20:54,315 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-20 03:20:54,316 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-20 03:20:54,317 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-03-20 03:20:54,325 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-20 03:20:54,325 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-20 03:20:54,327 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-20 03:20:54,327 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-20 03:20:54,327 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-20 03:20:54,328 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-20 03:20:54,328 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-20 03:20:54,328 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-20 03:20:54,328 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-20 03:20:54,328 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-20 03:20:54,329 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-20 03:20:54,329 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-20 03:20:54,329 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-20 03:20:54,329 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-20 03:20:54,329 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-20 03:20:54,329 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-20 03:20:54,329 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-20 03:20:54,329 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-20 03:20:54,329 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 03:20:54,330 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-20 03:20:54,330 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-20 03:20:54,330 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-20 03:20:54,330 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-20 03:20:54,519 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-20 03:20:54,540 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-20 03:20:54,542 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-20 03:20:54,542 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-20 03:20:54,543 INFO L275 PluginConnector]: CDTParser initialized [2022-03-20 03:20:54,544 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i [2022-03-20 03:20:54,606 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca77ff5d8/870542c8c6c442efaf2b645098617b6a/FLAG771622f36 [2022-03-20 03:20:55,005 INFO L306 CDTParser]: Found 1 translation units. [2022-03-20 03:20:55,005 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i [2022-03-20 03:20:55,009 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca77ff5d8/870542c8c6c442efaf2b645098617b6a/FLAG771622f36 [2022-03-20 03:20:55,020 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca77ff5d8/870542c8c6c442efaf2b645098617b6a [2022-03-20 03:20:55,022 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-20 03:20:55,023 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-20 03:20:55,034 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-20 03:20:55,034 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-20 03:20:55,036 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-20 03:20:55,037 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 03:20:55" (1/1) ... [2022-03-20 03:20:55,038 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d5a74c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:20:55, skipping insertion in model container [2022-03-20 03:20:55,038 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 03:20:55" (1/1) ... [2022-03-20 03:20:55,042 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-20 03:20:55,058 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-20 03:20:55,211 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i[878,891] [2022-03-20 03:20:55,267 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 03:20:55,276 INFO L203 MainTranslator]: Completed pre-run [2022-03-20 03:20:55,288 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i[878,891] [2022-03-20 03:20:55,310 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 03:20:55,329 INFO L208 MainTranslator]: Completed translation [2022-03-20 03:20:55,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:20:55 WrapperNode [2022-03-20 03:20:55,330 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-20 03:20:55,330 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-20 03:20:55,331 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-20 03:20:55,331 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-20 03:20:55,339 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:20:55" (1/1) ... [2022-03-20 03:20:55,339 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:20:55" (1/1) ... [2022-03-20 03:20:55,355 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:20:55" (1/1) ... [2022-03-20 03:20:55,355 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:20:55" (1/1) ... [2022-03-20 03:20:55,362 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:20:55" (1/1) ... [2022-03-20 03:20:55,365 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:20:55" (1/1) ... [2022-03-20 03:20:55,366 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:20:55" (1/1) ... [2022-03-20 03:20:55,368 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-20 03:20:55,368 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-20 03:20:55,369 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-20 03:20:55,369 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-20 03:20:55,376 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:20:55" (1/1) ... [2022-03-20 03:20:55,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 03:20:55,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 03:20:55,398 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-20 03:20:55,429 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-20 03:20:55,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-20 03:20:55,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-20 03:20:55,447 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-20 03:20:55,447 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-20 03:20:55,447 INFO L138 BoogieDeclarations]: Found implementation of procedure r_strncpy [2022-03-20 03:20:55,448 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_expression_list [2022-03-20 03:20:55,448 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-20 03:20:55,448 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-20 03:20:55,448 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-20 03:20:55,448 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-03-20 03:20:55,448 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-03-20 03:20:55,448 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-20 03:20:55,448 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-20 03:20:55,448 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-03-20 03:20:55,449 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-20 03:20:55,450 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2022-03-20 03:20:55,450 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2022-03-20 03:20:55,450 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2022-03-20 03:20:55,450 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2022-03-20 03:20:55,450 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy_ptr [2022-03-20 03:20:55,451 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2022-03-20 03:20:55,451 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2022-03-20 03:20:55,451 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2022-03-20 03:20:55,451 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2022-03-20 03:20:55,451 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2022-03-20 03:20:55,451 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2022-03-20 03:20:55,451 INFO L130 BoogieDeclarations]: Found specification of procedure isascii [2022-03-20 03:20:55,451 INFO L130 BoogieDeclarations]: Found specification of procedure isspace [2022-03-20 03:20:55,451 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2022-03-20 03:20:55,451 INFO L130 BoogieDeclarations]: Found specification of procedure strrand [2022-03-20 03:20:55,451 INFO L130 BoogieDeclarations]: Found specification of procedure istrrand [2022-03-20 03:20:55,452 INFO L130 BoogieDeclarations]: Found specification of procedure istrchr [2022-03-20 03:20:55,452 INFO L130 BoogieDeclarations]: Found specification of procedure istrrchr [2022-03-20 03:20:55,452 INFO L130 BoogieDeclarations]: Found specification of procedure istrncmp [2022-03-20 03:20:55,452 INFO L130 BoogieDeclarations]: Found specification of procedure istrstr [2022-03-20 03:20:55,452 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncpy [2022-03-20 03:20:55,452 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcpy [2022-03-20 03:20:55,452 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcat [2022-03-20 03:20:55,452 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncat [2022-03-20 03:20:55,452 INFO L130 BoogieDeclarations]: Found specification of procedure r_memcpy [2022-03-20 03:20:55,452 INFO L130 BoogieDeclarations]: Found specification of procedure parse_expression_list [2022-03-20 03:20:55,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-20 03:20:55,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-20 03:20:55,453 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-20 03:20:55,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-20 03:20:55,453 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-20 03:20:55,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-20 03:20:55,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-20 03:20:55,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-20 03:20:55,548 INFO L234 CfgBuilder]: Building ICFG [2022-03-20 03:20:55,549 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-20 03:20:55,709 INFO L275 CfgBuilder]: Performing block encoding [2022-03-20 03:20:55,713 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-20 03:20:55,713 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-03-20 03:20:55,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 03:20:55 BoogieIcfgContainer [2022-03-20 03:20:55,715 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-20 03:20:55,715 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-20 03:20:55,715 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-20 03:20:55,716 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-20 03:20:55,720 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 03:20:55" (1/1) ... [2022-03-20 03:20:55,721 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_JORDAN [2022-03-20 03:20:55,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 20.03 03:20:55 BasicIcfg [2022-03-20 03:20:55,737 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-20 03:20:55,738 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-20 03:20:55,739 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-20 03:20:55,742 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-20 03:20:55,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.03 03:20:55" (1/4) ... [2022-03-20 03:20:55,743 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d60b1c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 03:20:55, skipping insertion in model container [2022-03-20 03:20:55,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:20:55" (2/4) ... [2022-03-20 03:20:55,743 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d60b1c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 03:20:55, skipping insertion in model container [2022-03-20 03:20:55,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 03:20:55" (3/4) ... [2022-03-20 03:20:55,744 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d60b1c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 03:20:55, skipping insertion in model container [2022-03-20 03:20:55,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 20.03 03:20:55" (4/4) ... [2022-03-20 03:20:55,744 INFO L111 eAbstractionObserver]: Analyzing ICFG veris.c_OpenSER_cases1_stripFullBoth_arr.iJordan [2022-03-20 03:20:55,748 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-03-20 03:20:55,748 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-20 03:20:55,782 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-20 03:20:55,786 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=ForwardPredicates, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-03-20 03:20:55,786 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-20 03:20:55,797 INFO L276 IsEmpty]: Start isEmpty. Operand has 55 states, 43 states have (on average 1.4651162790697674) internal successors, (63), 44 states have internal predecessors, (63), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-03-20 03:20:55,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-03-20 03:20:55,803 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 03:20:55,803 INFO L499 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] [2022-03-20 03:20:55,804 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 03:20:55,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 03:20:55,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1913248372, now seen corresponding path program 1 times [2022-03-20 03:20:55,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 03:20:55,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726025677] [2022-03-20 03:20:55,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 03:20:55,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 03:20:55,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:20:55,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 03:20:55,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:20:55,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-20 03:20:55,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:20:55,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 03:20:55,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 03:20:55,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726025677] [2022-03-20 03:20:55,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726025677] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 03:20:55,973 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 03:20:55,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-20 03:20:55,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950225838] [2022-03-20 03:20:55,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 03:20:55,977 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-20 03:20:55,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 03:20:56,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-20 03:20:56,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-20 03:20:56,005 INFO L87 Difference]: Start difference. First operand has 55 states, 43 states have (on average 1.4651162790697674) internal successors, (63), 44 states have internal predecessors, (63), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-20 03:20:56,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 03:20:56,067 INFO L93 Difference]: Finished difference Result 55 states and 68 transitions. [2022-03-20 03:20:56,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-20 03:20:56,069 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 32 [2022-03-20 03:20:56,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 03:20:56,074 INFO L225 Difference]: With dead ends: 55 [2022-03-20 03:20:56,074 INFO L226 Difference]: Without dead ends: 47 [2022-03-20 03:20:56,075 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-20 03:20:56,077 INFO L913 BasicCegarLoop]: 65 mSDtfsCounter, 55 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 03:20:56,078 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 68 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 03:20:56,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-03-20 03:20:56,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2022-03-20 03:20:56,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 38 states have (on average 1.2894736842105263) internal successors, (49), 38 states have internal predecessors, (49), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-03-20 03:20:56,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 57 transitions. [2022-03-20 03:20:56,102 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 57 transitions. Word has length 32 [2022-03-20 03:20:56,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 03:20:56,103 INFO L478 AbstractCegarLoop]: Abstraction has 47 states and 57 transitions. [2022-03-20 03:20:56,103 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-20 03:20:56,103 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 57 transitions. [2022-03-20 03:20:56,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-20 03:20:56,104 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 03:20:56,104 INFO L499 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] [2022-03-20 03:20:56,104 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-20 03:20:56,104 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 03:20:56,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 03:20:56,108 INFO L85 PathProgramCache]: Analyzing trace with hash -123059233, now seen corresponding path program 1 times [2022-03-20 03:20:56,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 03:20:56,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030828403] [2022-03-20 03:20:56,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 03:20:56,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 03:20:56,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:20:56,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 03:20:56,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:20:56,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-03-20 03:20:56,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:20:56,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 03:20:56,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 03:20:56,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030828403] [2022-03-20 03:20:56,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030828403] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 03:20:56,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 03:20:56,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-20 03:20:56,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799839404] [2022-03-20 03:20:56,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 03:20:56,197 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-20 03:20:56,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 03:20:56,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-20 03:20:56,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-20 03:20:56,198 INFO L87 Difference]: Start difference. First operand 47 states and 57 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-20 03:20:56,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 03:20:56,300 INFO L93 Difference]: Finished difference Result 49 states and 59 transitions. [2022-03-20 03:20:56,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-20 03:20:56,301 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 36 [2022-03-20 03:20:56,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 03:20:56,301 INFO L225 Difference]: With dead ends: 49 [2022-03-20 03:20:56,301 INFO L226 Difference]: Without dead ends: 49 [2022-03-20 03:20:56,302 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-20 03:20:56,303 INFO L913 BasicCegarLoop]: 53 mSDtfsCounter, 49 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 03:20:56,303 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 60 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 03:20:56,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-03-20 03:20:56,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 48. [2022-03-20 03:20:56,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 39 states have (on average 1.2820512820512822) internal successors, (50), 39 states have internal predecessors, (50), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-03-20 03:20:56,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 58 transitions. [2022-03-20 03:20:56,308 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 58 transitions. Word has length 36 [2022-03-20 03:20:56,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 03:20:56,308 INFO L478 AbstractCegarLoop]: Abstraction has 48 states and 58 transitions. [2022-03-20 03:20:56,308 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-20 03:20:56,308 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 58 transitions. [2022-03-20 03:20:56,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-03-20 03:20:56,309 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 03:20:56,309 INFO L499 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] [2022-03-20 03:20:56,309 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-20 03:20:56,309 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 03:20:56,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 03:20:56,310 INFO L85 PathProgramCache]: Analyzing trace with hash -62292927, now seen corresponding path program 1 times [2022-03-20 03:20:56,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 03:20:56,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712382494] [2022-03-20 03:20:56,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 03:20:56,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 03:20:56,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:20:56,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 03:20:56,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:20:56,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-20 03:20:56,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:20:56,408 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 03:20:56,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 03:20:56,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712382494] [2022-03-20 03:20:56,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712382494] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 03:20:56,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387746236] [2022-03-20 03:20:56,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 03:20:56,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 03:20:56,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 03:20:56,417 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 03:20:56,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-20 03:20:56,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:20:56,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 2 conjunts are in the unsatisfiable core [2022-03-20 03:20:56,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 03:20:56,648 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 03:20:56,649 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 03:20:56,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1387746236] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 03:20:56,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 03:20:56,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-03-20 03:20:56,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534063169] [2022-03-20 03:20:56,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 03:20:56,650 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-20 03:20:56,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 03:20:56,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-20 03:20:56,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-03-20 03:20:56,651 INFO L87 Difference]: Start difference. First operand 48 states and 58 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-20 03:20:56,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 03:20:56,659 INFO L93 Difference]: Finished difference Result 49 states and 59 transitions. [2022-03-20 03:20:56,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-20 03:20:56,659 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 38 [2022-03-20 03:20:56,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 03:20:56,660 INFO L225 Difference]: With dead ends: 49 [2022-03-20 03:20:56,660 INFO L226 Difference]: Without dead ends: 49 [2022-03-20 03:20:56,661 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-03-20 03:20:56,662 INFO L913 BasicCegarLoop]: 56 mSDtfsCounter, 0 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 03:20:56,662 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 108 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 03:20:56,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-03-20 03:20:56,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2022-03-20 03:20:56,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 40 states have (on average 1.275) internal successors, (51), 40 states have internal predecessors, (51), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-03-20 03:20:56,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 59 transitions. [2022-03-20 03:20:56,668 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 59 transitions. Word has length 38 [2022-03-20 03:20:56,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 03:20:56,668 INFO L478 AbstractCegarLoop]: Abstraction has 49 states and 59 transitions. [2022-03-20 03:20:56,668 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-20 03:20:56,668 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 59 transitions. [2022-03-20 03:20:56,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-03-20 03:20:56,669 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 03:20:56,670 INFO L499 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] [2022-03-20 03:20:56,704 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-20 03:20:56,895 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 03:20:56,896 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 03:20:56,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 03:20:56,896 INFO L85 PathProgramCache]: Analyzing trace with hash -2100349216, now seen corresponding path program 1 times [2022-03-20 03:20:56,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 03:20:56,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912225075] [2022-03-20 03:20:56,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 03:20:56,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 03:20:56,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:20:56,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 03:20:56,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:20:56,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-20 03:20:56,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:20:56,988 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 03:20:56,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 03:20:56,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912225075] [2022-03-20 03:20:56,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912225075] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 03:20:56,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1080551083] [2022-03-20 03:20:56,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 03:20:56,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 03:20:56,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 03:20:57,012 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 03:20:57,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-20 03:20:57,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:20:57,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 4 conjunts are in the unsatisfiable core [2022-03-20 03:20:57,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 03:20:57,181 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 03:20:57,181 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 03:20:57,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1080551083] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 03:20:57,181 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 03:20:57,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2022-03-20 03:20:57,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214612928] [2022-03-20 03:20:57,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 03:20:57,182 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 03:20:57,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 03:20:57,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 03:20:57,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-03-20 03:20:57,183 INFO L87 Difference]: Start difference. First operand 49 states and 59 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-20 03:20:57,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 03:20:57,244 INFO L93 Difference]: Finished difference Result 73 states and 89 transitions. [2022-03-20 03:20:57,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-20 03:20:57,245 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 38 [2022-03-20 03:20:57,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 03:20:57,249 INFO L225 Difference]: With dead ends: 73 [2022-03-20 03:20:57,249 INFO L226 Difference]: Without dead ends: 73 [2022-03-20 03:20:57,250 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-03-20 03:20:57,254 INFO L913 BasicCegarLoop]: 49 mSDtfsCounter, 27 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 03:20:57,256 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 178 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 03:20:57,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-03-20 03:20:57,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 53. [2022-03-20 03:20:57,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 44 states have (on average 1.25) internal successors, (55), 44 states have internal predecessors, (55), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-03-20 03:20:57,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 63 transitions. [2022-03-20 03:20:57,268 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 63 transitions. Word has length 38 [2022-03-20 03:20:57,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 03:20:57,268 INFO L478 AbstractCegarLoop]: Abstraction has 53 states and 63 transitions. [2022-03-20 03:20:57,268 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-20 03:20:57,268 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 63 transitions. [2022-03-20 03:20:57,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-03-20 03:20:57,269 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 03:20:57,269 INFO L499 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] [2022-03-20 03:20:57,302 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-20 03:20:57,485 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-03-20 03:20:57,486 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 03:20:57,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 03:20:57,486 INFO L85 PathProgramCache]: Analyzing trace with hash 2030297792, now seen corresponding path program 1 times [2022-03-20 03:20:57,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 03:20:57,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268093807] [2022-03-20 03:20:57,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 03:20:57,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 03:20:57,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:20:57,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 03:20:57,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:20:57,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-03-20 03:20:57,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:20:57,573 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 03:20:57,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 03:20:57,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268093807] [2022-03-20 03:20:57,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268093807] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 03:20:57,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652756428] [2022-03-20 03:20:57,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 03:20:57,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 03:20:57,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 03:20:57,586 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 03:20:57,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-20 03:20:57,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:20:57,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 3 conjunts are in the unsatisfiable core [2022-03-20 03:20:57,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 03:20:57,818 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 03:20:57,818 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 03:20:57,928 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 03:20:57,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [652756428] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 03:20:57,928 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 03:20:57,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2022-03-20 03:20:57,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714108198] [2022-03-20 03:20:57,930 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 03:20:57,931 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-20 03:20:57,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 03:20:57,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-20 03:20:57,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-03-20 03:20:57,932 INFO L87 Difference]: Start difference. First operand 53 states and 63 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-03-20 03:20:58,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 03:20:58,055 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2022-03-20 03:20:58,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-20 03:20:58,056 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 38 [2022-03-20 03:20:58,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 03:20:58,058 INFO L225 Difference]: With dead ends: 59 [2022-03-20 03:20:58,058 INFO L226 Difference]: Without dead ends: 59 [2022-03-20 03:20:58,058 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2022-03-20 03:20:58,060 INFO L913 BasicCegarLoop]: 53 mSDtfsCounter, 56 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 03:20:58,061 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 65 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 03:20:58,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-03-20 03:20:58,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2022-03-20 03:20:58,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 50 states have (on average 1.22) internal successors, (61), 50 states have internal predecessors, (61), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-03-20 03:20:58,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 69 transitions. [2022-03-20 03:20:58,074 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 69 transitions. Word has length 38 [2022-03-20 03:20:58,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 03:20:58,074 INFO L478 AbstractCegarLoop]: Abstraction has 59 states and 69 transitions. [2022-03-20 03:20:58,074 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-03-20 03:20:58,074 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 69 transitions. [2022-03-20 03:20:58,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-03-20 03:20:58,075 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 03:20:58,075 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 03:20:58,098 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-03-20 03:20:58,298 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 03:20:58,299 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 03:20:58,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 03:20:58,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1977002214, now seen corresponding path program 2 times [2022-03-20 03:20:58,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 03:20:58,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446162172] [2022-03-20 03:20:58,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 03:20:58,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 03:20:58,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:20:58,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 03:20:58,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:20:58,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-03-20 03:20:58,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:20:58,408 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-03-20 03:20:58,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 03:20:58,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446162172] [2022-03-20 03:20:58,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446162172] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 03:20:58,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 03:20:58,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-20 03:20:58,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550981896] [2022-03-20 03:20:58,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 03:20:58,409 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-20 03:20:58,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 03:20:58,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-20 03:20:58,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-03-20 03:20:58,409 INFO L87 Difference]: Start difference. First operand 59 states and 69 transitions. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-20 03:20:58,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 03:20:58,519 INFO L93 Difference]: Finished difference Result 69 states and 83 transitions. [2022-03-20 03:20:58,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-20 03:20:58,520 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 44 [2022-03-20 03:20:58,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 03:20:58,521 INFO L225 Difference]: With dead ends: 69 [2022-03-20 03:20:58,521 INFO L226 Difference]: Without dead ends: 0 [2022-03-20 03:20:58,522 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-03-20 03:20:58,523 INFO L913 BasicCegarLoop]: 45 mSDtfsCounter, 77 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 03:20:58,527 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 62 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 03:20:58,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-20 03:20:58,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-20 03:20:58,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-20 03:20:58,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-20 03:20:58,534 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 44 [2022-03-20 03:20:58,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 03:20:58,534 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-20 03:20:58,534 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-20 03:20:58,534 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-20 03:20:58,534 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-20 03:20:58,536 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-20 03:20:58,537 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-20 03:20:58,539 INFO L719 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2022-03-20 03:20:58,539 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-20 03:20:58,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 03:20:58 BasicIcfg [2022-03-20 03:20:58,544 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-20 03:20:58,545 INFO L158 Benchmark]: Toolchain (without parser) took 3521.18ms. Allocated memory was 222.3MB in the beginning and 278.9MB in the end (delta: 56.6MB). Free memory was 165.9MB in the beginning and 209.4MB in the end (delta: -43.5MB). Peak memory consumption was 14.2MB. Max. memory is 8.0GB. [2022-03-20 03:20:58,545 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 222.3MB. Free memory is still 182.9MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-20 03:20:58,545 INFO L158 Benchmark]: CACSL2BoogieTranslator took 296.03ms. Allocated memory is still 222.3MB. Free memory was 165.7MB in the beginning and 191.3MB in the end (delta: -25.7MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-03-20 03:20:58,545 INFO L158 Benchmark]: Boogie Preprocessor took 37.47ms. Allocated memory is still 222.3MB. Free memory was 191.3MB in the beginning and 189.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-20 03:20:58,547 INFO L158 Benchmark]: RCFGBuilder took 346.30ms. Allocated memory is still 222.3MB. Free memory was 189.2MB in the beginning and 173.5MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2022-03-20 03:20:58,547 INFO L158 Benchmark]: IcfgTransformer took 22.24ms. Allocated memory is still 222.3MB. Free memory was 173.0MB in the beginning and 171.4MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-20 03:20:58,548 INFO L158 Benchmark]: TraceAbstraction took 2805.76ms. Allocated memory was 222.3MB in the beginning and 278.9MB in the end (delta: 56.6MB). Free memory was 170.9MB in the beginning and 209.4MB in the end (delta: -38.5MB). Peak memory consumption was 18.6MB. Max. memory is 8.0GB. [2022-03-20 03:20:58,549 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 222.3MB. Free memory is still 182.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 296.03ms. Allocated memory is still 222.3MB. Free memory was 165.7MB in the beginning and 191.3MB in the end (delta: -25.7MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 37.47ms. Allocated memory is still 222.3MB. Free memory was 191.3MB in the beginning and 189.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 346.30ms. Allocated memory is still 222.3MB. Free memory was 189.2MB in the beginning and 173.5MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * IcfgTransformer took 22.24ms. Allocated memory is still 222.3MB. Free memory was 173.0MB in the beginning and 171.4MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 2805.76ms. Allocated memory was 222.3MB in the beginning and 278.9MB in the end (delta: 56.6MB). Free memory was 170.9MB in the beginning and 209.4MB in the end (delta: -38.5MB). Peak memory consumption was 18.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 16]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 55 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.8s, OverallIterations: 6, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 273 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 264 mSDsluCounter, 541 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 220 mSDsCounter, 40 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 373 IncrementalHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 40 mSolverCounterUnsat, 321 mSDtfsCounter, 373 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 207 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=59occurred in iteration=5, InterpolantAutomatonStates: 30, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 21 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 340 NumberOfCodeBlocks, 340 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 368 ConstructedInterpolants, 0 QuantifiedInterpolants, 474 SizeOfPredicates, 2 NumberOfNonLiveVariables, 499 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 10 InterpolantComputations, 5 PerfectInterpolantSequences, 18/23 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-03-20 03:20:58,587 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...