/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/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-6253b08 [2021-05-06 11:20:46,252 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-06 11:20:46,255 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-06 11:20:46,292 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-06 11:20:46,292 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-06 11:20:46,295 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-06 11:20:46,298 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-06 11:20:46,302 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-06 11:20:46,304 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-06 11:20:46,308 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-06 11:20:46,309 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-06 11:20:46,312 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-06 11:20:46,313 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-06 11:20:46,314 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-06 11:20:46,316 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-06 11:20:46,317 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-06 11:20:46,319 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-06 11:20:46,320 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-06 11:20:46,322 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-06 11:20:46,328 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-06 11:20:46,329 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-06 11:20:46,331 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-06 11:20:46,332 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-06 11:20:46,334 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-06 11:20:46,340 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-05-06 11:20:46,341 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-05-06 11:20:46,341 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-05-06 11:20:46,342 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-05-06 11:20:46,343 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-05-06 11:20:46,344 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-05-06 11:20:46,344 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-05-06 11:20:46,344 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-05-06 11:20:46,346 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-05-06 11:20:46,346 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-05-06 11:20:46,347 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-05-06 11:20:46,347 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-05-06 11:20:46,348 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-05-06 11:20:46,348 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-05-06 11:20:46,348 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-06 11:20:46,361 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-06 11:20:46,362 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-06 11:20:46,366 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2021-05-06 11:20:46,381 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-06 11:20:46,382 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-06 11:20:46,385 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-06 11:20:46,385 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-06 11:20:46,385 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-06 11:20:46,385 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-06 11:20:46,385 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-06 11:20:46,385 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-06 11:20:46,386 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-06 11:20:46,386 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-06 11:20:46,386 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-06 11:20:46,387 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-06 11:20:46,387 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-06 11:20:46,387 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-06 11:20:46,387 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-06 11:20:46,387 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-06 11:20:46,387 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-06 11:20:46,388 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-06 11:20:46,388 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 11:20:46,388 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-06 11:20:46,388 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-05-06 11:20:46,388 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-06 11:20:46,388 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-05-06 11:20:46,388 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-06 11:20:46,730 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-06 11:20:46,754 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-06 11:20:46,758 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-06 11:20:46,759 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-06 11:20:46,760 INFO L275 PluginConnector]: CDTParser initialized [2021-05-06 11:20:46,761 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2021-05-06 11:20:46,837 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37a6ac85a/de1c61db0d74444c92f01d53d6ef7b15/FLAG11741d06c [2021-05-06 11:20:47,274 INFO L306 CDTParser]: Found 1 translation units. [2021-05-06 11:20:47,275 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2021-05-06 11:20:47,282 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37a6ac85a/de1c61db0d74444c92f01d53d6ef7b15/FLAG11741d06c [2021-05-06 11:20:47,301 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37a6ac85a/de1c61db0d74444c92f01d53d6ef7b15 [2021-05-06 11:20:47,304 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-06 11:20:47,307 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-06 11:20:47,312 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-06 11:20:47,312 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-06 11:20:47,316 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-06 11:20:47,316 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 11:20:47" (1/1) ... [2021-05-06 11:20:47,317 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d324966 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:20:47, skipping insertion in model container [2021-05-06 11:20:47,317 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 11:20:47" (1/1) ... [2021-05-06 11:20:47,324 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-06 11:20:47,342 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-06 11:20:47,496 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i[840,853] [2021-05-06 11:20:47,589 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 11:20:47,601 INFO L203 MainTranslator]: Completed pre-run [2021-05-06 11:20:47,615 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i[840,853] [2021-05-06 11:20:47,638 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 11:20:47,666 INFO L208 MainTranslator]: Completed translation [2021-05-06 11:20:47,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:20:47 WrapperNode [2021-05-06 11:20:47,667 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-06 11:20:47,668 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-06 11:20:47,668 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-06 11:20:47,668 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-06 11:20:47,679 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:20:47" (1/1) ... [2021-05-06 11:20:47,679 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:20:47" (1/1) ... [2021-05-06 11:20:47,695 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:20:47" (1/1) ... [2021-05-06 11:20:47,696 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:20:47" (1/1) ... [2021-05-06 11:20:47,713 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:20:47" (1/1) ... [2021-05-06 11:20:47,717 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:20:47" (1/1) ... [2021-05-06 11:20:47,719 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:20:47" (1/1) ... [2021-05-06 11:20:47,728 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-06 11:20:47,729 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-06 11:20:47,729 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-06 11:20:47,729 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-06 11:20:47,729 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:20:47" (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 [2021-05-06 11:20:47,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-06 11:20:47,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-06 11:20:47,802 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-06 11:20:47,802 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-06 11:20:47,802 INFO L138 BoogieDeclarations]: Found implementation of procedure r_strncpy [2021-05-06 11:20:47,803 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_expression_list [2021-05-06 11:20:47,803 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-06 11:20:47,803 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-06 11:20:47,804 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-06 11:20:47,804 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-05-06 11:20:47,804 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-05-06 11:20:47,804 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-06 11:20:47,804 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-06 11:20:47,805 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-06 11:20:47,805 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-05-06 11:20:47,805 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-05-06 11:20:47,805 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-05-06 11:20:47,806 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-05-06 11:20:47,806 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy_ptr [2021-05-06 11:20:47,807 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-05-06 11:20:47,808 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-05-06 11:20:47,808 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-05-06 11:20:47,808 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-05-06 11:20:47,808 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-05-06 11:20:47,808 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-05-06 11:20:47,808 INFO L130 BoogieDeclarations]: Found specification of procedure isascii [2021-05-06 11:20:47,808 INFO L130 BoogieDeclarations]: Found specification of procedure isspace [2021-05-06 11:20:47,808 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2021-05-06 11:20:47,808 INFO L130 BoogieDeclarations]: Found specification of procedure strrand [2021-05-06 11:20:47,808 INFO L130 BoogieDeclarations]: Found specification of procedure istrrand [2021-05-06 11:20:47,809 INFO L130 BoogieDeclarations]: Found specification of procedure istrchr [2021-05-06 11:20:47,809 INFO L130 BoogieDeclarations]: Found specification of procedure istrrchr [2021-05-06 11:20:47,809 INFO L130 BoogieDeclarations]: Found specification of procedure istrncmp [2021-05-06 11:20:47,809 INFO L130 BoogieDeclarations]: Found specification of procedure istrstr [2021-05-06 11:20:47,809 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncpy [2021-05-06 11:20:47,809 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcpy [2021-05-06 11:20:47,810 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcat [2021-05-06 11:20:47,810 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncat [2021-05-06 11:20:47,810 INFO L130 BoogieDeclarations]: Found specification of procedure r_memcpy [2021-05-06 11:20:47,810 INFO L130 BoogieDeclarations]: Found specification of procedure parse_expression_list [2021-05-06 11:20:47,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-06 11:20:47,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-06 11:20:47,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-06 11:20:47,810 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-06 11:20:47,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-06 11:20:47,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-06 11:20:47,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-06 11:20:48,242 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-06 11:20:48,242 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-05-06 11:20:48,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 11:20:48 BoogieIcfgContainer [2021-05-06 11:20:48,244 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-06 11:20:48,246 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-06 11:20:48,246 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-06 11:20:48,249 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-06 11:20:48,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.05 11:20:47" (1/3) ... [2021-05-06 11:20:48,250 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1667eb02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 11:20:48, skipping insertion in model container [2021-05-06 11:20:48,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:20:47" (2/3) ... [2021-05-06 11:20:48,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1667eb02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 11:20:48, skipping insertion in model container [2021-05-06 11:20:48,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 11:20:48" (3/3) ... [2021-05-06 11:20:48,252 INFO L111 eAbstractionObserver]: Analyzing ICFG verisec_OpenSER_cases1_stripFullBoth_arr.i [2021-05-06 11:20:48,260 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-05-06 11:20:48,263 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-06 11:20:48,278 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-06 11:20:48,303 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-06 11:20:48,304 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-06 11:20:48,304 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-05-06 11:20:48,304 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-06 11:20:48,304 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-06 11:20:48,304 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-06 11:20:48,305 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-06 11:20:48,305 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-06 11:20:48,321 INFO L276 IsEmpty]: Start isEmpty. Operand has 51 states, 39 states have (on average 1.435897435897436) internal successors, (56), 40 states have internal predecessors, (56), 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) [2021-05-06 11:20:48,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-06 11:20:48,328 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:20:48,329 INFO L523 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] [2021-05-06 11:20:48,329 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:20:48,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:20:48,335 INFO L82 PathProgramCache]: Analyzing trace with hash 1687048304, now seen corresponding path program 1 times [2021-05-06 11:20:48,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:20:48,342 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [500902822] [2021-05-06 11:20:48,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:20:48,403 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:20:48,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:20:48,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:20:48,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:20:48,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-05-06 11:20:48,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:20:48,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:20:48,604 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:20:48,604 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [500902822] [2021-05-06 11:20:48,606 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [500902822] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:20:48,606 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:20:48,606 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-06 11:20:48,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992520156] [2021-05-06 11:20:48,610 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-06 11:20:48,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:20:48,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-06 11:20:48,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 11:20:48,644 INFO L87 Difference]: Start difference. First operand has 51 states, 39 states have (on average 1.435897435897436) internal successors, (56), 40 states have internal predecessors, (56), 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 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 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) [2021-05-06 11:20:48,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:20:48,762 INFO L93 Difference]: Finished difference Result 93 states and 123 transitions. [2021-05-06 11:20:48,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-06 11:20:48,764 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 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 29 [2021-05-06 11:20:48,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:20:48,770 INFO L225 Difference]: With dead ends: 93 [2021-05-06 11:20:48,770 INFO L226 Difference]: Without dead ends: 43 [2021-05-06 11:20:48,773 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 11:20:48,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-05-06 11:20:48,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-05-06 11:20:48,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 34 states have (on average 1.2941176470588236) internal successors, (44), 34 states have internal predecessors, (44), 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) [2021-05-06 11:20:48,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 52 transitions. [2021-05-06 11:20:48,804 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 52 transitions. Word has length 29 [2021-05-06 11:20:48,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:20:48,805 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 52 transitions. [2021-05-06 11:20:48,805 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 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) [2021-05-06 11:20:48,805 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 52 transitions. [2021-05-06 11:20:48,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-06 11:20:48,806 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:20:48,806 INFO L523 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] [2021-05-06 11:20:48,807 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-06 11:20:48,807 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:20:48,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:20:48,807 INFO L82 PathProgramCache]: Analyzing trace with hash 1509330471, now seen corresponding path program 1 times [2021-05-06 11:20:48,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:20:48,808 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [43612127] [2021-05-06 11:20:48,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:20:48,810 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:20:48,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:20:48,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:20:48,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:20:48,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-05-06 11:20:48,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:20:48,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:20:48,931 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:20:48,932 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [43612127] [2021-05-06 11:20:48,932 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [43612127] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:20:48,932 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:20:48,933 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-06 11:20:48,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761421207] [2021-05-06 11:20:48,934 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-06 11:20:48,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:20:48,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-06 11:20:48,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-06 11:20:48,940 INFO L87 Difference]: Start difference. First operand 43 states and 52 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 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) [2021-05-06 11:20:49,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:20:49,096 INFO L93 Difference]: Finished difference Result 78 states and 97 transitions. [2021-05-06 11:20:49,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-06 11:20:49,103 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 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 33 [2021-05-06 11:20:49,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:20:49,106 INFO L225 Difference]: With dead ends: 78 [2021-05-06 11:20:49,106 INFO L226 Difference]: Without dead ends: 44 [2021-05-06 11:20:49,108 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.5ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-06 11:20:49,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-05-06 11:20:49,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2021-05-06 11:20:49,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 35 states have (on average 1.2857142857142858) internal successors, (45), 35 states have internal predecessors, (45), 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) [2021-05-06 11:20:49,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2021-05-06 11:20:49,126 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 33 [2021-05-06 11:20:49,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:20:49,126 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2021-05-06 11:20:49,126 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 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) [2021-05-06 11:20:49,126 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2021-05-06 11:20:49,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-06 11:20:49,127 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:20:49,127 INFO L523 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] [2021-05-06 11:20:49,127 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-06 11:20:49,128 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:20:49,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:20:49,128 INFO L82 PathProgramCache]: Analyzing trace with hash 1932032297, now seen corresponding path program 1 times [2021-05-06 11:20:49,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:20:49,128 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1121996053] [2021-05-06 11:20:49,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:20:49,131 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:20:49,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:20:49,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:20:49,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:20:49,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-05-06 11:20:49,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:20:49,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:20:49,267 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:20:49,267 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1121996053] [2021-05-06 11:20:49,267 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1121996053] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:20:49,267 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:20:49,268 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-06 11:20:49,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105256133] [2021-05-06 11:20:49,268 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-06 11:20:49,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:20:49,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-06 11:20:49,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-05-06 11:20:49,269 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 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) [2021-05-06 11:20:49,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:20:49,473 INFO L93 Difference]: Finished difference Result 106 states and 136 transitions. [2021-05-06 11:20:49,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-06 11:20:49,474 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 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 33 [2021-05-06 11:20:49,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:20:49,477 INFO L225 Difference]: With dead ends: 106 [2021-05-06 11:20:49,477 INFO L226 Difference]: Without dead ends: 71 [2021-05-06 11:20:49,478 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 43.4ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-05-06 11:20:49,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-05-06 11:20:49,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 52. [2021-05-06 11:20:49,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 43 states have (on average 1.302325581395349) internal successors, (56), 43 states have internal predecessors, (56), 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) [2021-05-06 11:20:49,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 64 transitions. [2021-05-06 11:20:49,490 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 64 transitions. Word has length 33 [2021-05-06 11:20:49,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:20:49,490 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 64 transitions. [2021-05-06 11:20:49,490 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 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) [2021-05-06 11:20:49,490 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 64 transitions. [2021-05-06 11:20:49,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-06 11:20:49,491 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:20:49,491 INFO L523 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] [2021-05-06 11:20:49,491 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-06 11:20:49,492 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:20:49,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:20:49,492 INFO L82 PathProgramCache]: Analyzing trace with hash -1403704983, now seen corresponding path program 1 times [2021-05-06 11:20:49,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:20:49,493 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1744099670] [2021-05-06 11:20:49,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:20:49,495 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:20:49,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:20:49,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:20:49,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:20:49,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-05-06 11:20:49,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:20:49,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:20:49,649 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:20:49,649 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1744099670] [2021-05-06 11:20:49,649 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1744099670] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:20:49,650 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:20:49,650 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-06 11:20:49,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139865987] [2021-05-06 11:20:49,650 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-06 11:20:49,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:20:49,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-06 11:20:49,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-05-06 11:20:49,651 INFO L87 Difference]: Start difference. First operand 52 states and 64 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 7 states have internal predecessors, (26), 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) [2021-05-06 11:20:49,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:20:49,987 INFO L93 Difference]: Finished difference Result 106 states and 136 transitions. [2021-05-06 11:20:49,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-06 11:20:49,993 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 7 states have internal predecessors, (26), 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 33 [2021-05-06 11:20:49,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:20:49,997 INFO L225 Difference]: With dead ends: 106 [2021-05-06 11:20:49,997 INFO L226 Difference]: Without dead ends: 104 [2021-05-06 11:20:49,998 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 158.7ms TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-05-06 11:20:49,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-05-06 11:20:50,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 84. [2021-05-06 11:20:50,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 72 states have (on average 1.3194444444444444) internal successors, (95), 73 states have internal predecessors, (95), 7 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2021-05-06 11:20:50,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 107 transitions. [2021-05-06 11:20:50,014 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 107 transitions. Word has length 33 [2021-05-06 11:20:50,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:20:50,014 INFO L480 AbstractCegarLoop]: Abstraction has 84 states and 107 transitions. [2021-05-06 11:20:50,015 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 7 states have internal predecessors, (26), 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) [2021-05-06 11:20:50,015 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 107 transitions. [2021-05-06 11:20:50,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-06 11:20:50,016 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:20:50,016 INFO L523 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] [2021-05-06 11:20:50,016 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-05-06 11:20:50,017 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:20:50,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:20:50,017 INFO L82 PathProgramCache]: Analyzing trace with hash 590439723, now seen corresponding path program 1 times [2021-05-06 11:20:50,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:20:50,017 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1099625691] [2021-05-06 11:20:50,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:20:50,019 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:20:50,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:20:50,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:20:50,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:20:50,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-05-06 11:20:50,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:20:50,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:20:50,118 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:20:50,118 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1099625691] [2021-05-06 11:20:50,119 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1099625691] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:20:50,119 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:20:50,119 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-06 11:20:50,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548015818] [2021-05-06 11:20:50,119 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-06 11:20:50,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:20:50,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-06 11:20:50,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-05-06 11:20:50,120 INFO L87 Difference]: Start difference. First operand 84 states and 107 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 7 states have internal predecessors, (26), 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) [2021-05-06 11:20:50,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:20:50,414 INFO L93 Difference]: Finished difference Result 195 states and 257 transitions. [2021-05-06 11:20:50,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-06 11:20:50,414 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 7 states have internal predecessors, (26), 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 33 [2021-05-06 11:20:50,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:20:50,417 INFO L225 Difference]: With dead ends: 195 [2021-05-06 11:20:50,417 INFO L226 Difference]: Without dead ends: 127 [2021-05-06 11:20:50,418 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 87.1ms TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-05-06 11:20:50,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-05-06 11:20:50,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 91. [2021-05-06 11:20:50,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 79 states have (on average 1.3037974683544304) internal successors, (103), 80 states have internal predecessors, (103), 7 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2021-05-06 11:20:50,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 115 transitions. [2021-05-06 11:20:50,429 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 115 transitions. Word has length 33 [2021-05-06 11:20:50,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:20:50,430 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 115 transitions. [2021-05-06 11:20:50,430 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 7 states have internal predecessors, (26), 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) [2021-05-06 11:20:50,430 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 115 transitions. [2021-05-06 11:20:50,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-05-06 11:20:50,431 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:20:50,431 INFO L523 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] [2021-05-06 11:20:50,431 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-05-06 11:20:50,431 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:20:50,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:20:50,432 INFO L82 PathProgramCache]: Analyzing trace with hash -532744798, now seen corresponding path program 1 times [2021-05-06 11:20:50,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:20:50,432 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [211782776] [2021-05-06 11:20:50,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:20:50,434 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:20:50,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:20:50,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:20:50,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:20:50,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-05-06 11:20:50,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:20:50,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:20:50,506 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:20:50,506 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [211782776] [2021-05-06 11:20:50,509 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [211782776] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:20:50,509 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:20:50,510 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-06 11:20:50,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20119773] [2021-05-06 11:20:50,510 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-06 11:20:50,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:20:50,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-06 11:20:50,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-05-06 11:20:50,512 INFO L87 Difference]: Start difference. First operand 91 states and 115 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 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) [2021-05-06 11:20:50,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:20:50,686 INFO L93 Difference]: Finished difference Result 180 states and 227 transitions. [2021-05-06 11:20:50,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-06 11:20:50,689 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 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 35 [2021-05-06 11:20:50,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:20:50,690 INFO L225 Difference]: With dead ends: 180 [2021-05-06 11:20:50,690 INFO L226 Difference]: Without dead ends: 116 [2021-05-06 11:20:50,694 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 62.5ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-05-06 11:20:50,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-05-06 11:20:50,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 86. [2021-05-06 11:20:50,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 74 states have (on average 1.2432432432432432) internal successors, (92), 75 states have internal predecessors, (92), 7 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2021-05-06 11:20:50,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 104 transitions. [2021-05-06 11:20:50,712 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 104 transitions. Word has length 35 [2021-05-06 11:20:50,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:20:50,713 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 104 transitions. [2021-05-06 11:20:50,713 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 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) [2021-05-06 11:20:50,713 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 104 transitions. [2021-05-06 11:20:50,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-05-06 11:20:50,714 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:20:50,714 INFO L523 BasicCegarLoop]: trace histogram [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] [2021-05-06 11:20:50,714 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-05-06 11:20:50,714 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:20:50,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:20:50,715 INFO L82 PathProgramCache]: Analyzing trace with hash -1949287377, now seen corresponding path program 1 times [2021-05-06 11:20:50,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:20:50,715 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [761820642] [2021-05-06 11:20:50,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:20:50,757 WARN L240 tifierPushTermWalker]: treesize reduction 11, result has 87.8 percent of original size [2021-05-06 11:20:50,760 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-06 11:20:50,771 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-06 11:20:50,782 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-06 11:20:50,783 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-06 11:20:50,784 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-06 11:20:50,786 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-06 11:20:50,799 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-06 11:20:50,800 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-06 11:20:50,805 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-06 11:20:50,817 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-06 11:20:50,868 WARN L245 tifierPushTermWalker]: treesize reduction 11, result has 87.8 percent of original size 79 [2021-05-06 11:20:50,904 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:20:50,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 11:20:50,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 11:20:50,954 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-06 11:20:50,978 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (= (select (select |#memory_int_6| parse_expression_list_~str.base_7) (+ .v_it_1.0 parse_expression_list_~str.offset_7 parse_expression_list_~i~0_7 1)) 0)) [2021-05-06 11:20:50,980 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (= (select (select |#memory_int_6| parse_expression_list_~str.base_7) (+ .v_it_1.1 parse_expression_list_~str.offset_7 parse_expression_list_~i~0_7 1)) 0)) [2021-05-06 11:20:50,981 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (= (select (select |#memory_int_6| parse_expression_list_~str.base_7) (+ .v_it_1.2 parse_expression_list_~str.offset_7 parse_expression_list_~i~0_7 1)) 0)) [2021-05-06 11:20:50,981 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (= (select (select |#memory_int_6| parse_expression_list_~str.base_7) (+ .v_it_1.3 parse_expression_list_~str.offset_7 parse_expression_list_~i~0_7 1)) 0)) [2021-05-06 11:20:50,981 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (= (select (select |#memory_int_6| parse_expression_list_~str.base_7) (+ .v_it_1.4 parse_expression_list_~str.offset_7 parse_expression_list_~i~0_7 1)) 0)) [2021-05-06 11:20:50,982 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (= (select (select |#memory_int_6| parse_expression_list_~str.base_7) (+ .v_it_1.5 parse_expression_list_~str.offset_7 parse_expression_list_~i~0_7 1)) 0)) [2021-05-06 11:20:50,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:20:51,013 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (= (select (select |#memory_int_6| parse_expression_list_~str.base_7) (+ .v_it_1.6 parse_expression_list_~str.offset_7 parse_expression_list_~i~0_7 1)) 0)) [2021-05-06 11:20:51,014 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (= (select (select |#memory_int_6| parse_expression_list_~str.base_7) (+ .v_it_1.7 parse_expression_list_~str.offset_7 parse_expression_list_~i~0_7 1)) 0)) [2021-05-06 11:20:51,014 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (= (select (select |#memory_int_6| parse_expression_list_~str.base_7) (+ .v_it_1.8 parse_expression_list_~str.offset_7 parse_expression_list_~i~0_7 1)) 0)) [2021-05-06 11:20:51,014 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (= (select (select |#memory_int_6| parse_expression_list_~str.base_7) (+ .v_it_1.9 parse_expression_list_~str.offset_7 parse_expression_list_~i~0_7 1)) 0)) [2021-05-06 11:20:51,015 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (= (select (select |#memory_int_6| parse_expression_list_~str.base_7) (+ .v_it_1.10 parse_expression_list_~str.offset_7 parse_expression_list_~i~0_7 1)) 0)) [2021-05-06 11:20:51,015 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (= (select (select |#memory_int_6| parse_expression_list_~str.base_7) (+ .v_it_1.11 parse_expression_list_~str.offset_7 parse_expression_list_~i~0_7 1)) 0)) [2021-05-06 11:20:51,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:20:51,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:20:51,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-06 11:20:51,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:20:51,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 11:20:51,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 11:20:51,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 11:20:51,240 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:20:51,241 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [761820642] [2021-05-06 11:20:51,241 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [761820642] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:20:51,241 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:20:51,241 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-05-06 11:20:51,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422084603] [2021-05-06 11:20:51,241 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-05-06 11:20:51,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:20:51,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-05-06 11:20:51,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-05-06 11:20:51,242 INFO L87 Difference]: Start difference. First operand 86 states and 104 transitions. Second operand has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 11 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) [2021-05-06 11:20:51,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:20:51,686 INFO L93 Difference]: Finished difference Result 163 states and 204 transitions. [2021-05-06 11:20:51,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-05-06 11:20:51,686 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 11 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 38 [2021-05-06 11:20:51,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:20:51,689 INFO L225 Difference]: With dead ends: 163 [2021-05-06 11:20:51,689 INFO L226 Difference]: Without dead ends: 119 [2021-05-06 11:20:51,690 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 281.9ms TimeCoverageRelationStatistics Valid=91, Invalid=371, Unknown=0, NotChecked=0, Total=462 [2021-05-06 11:20:51,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-05-06 11:20:51,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 98. [2021-05-06 11:20:51,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 86 states have (on average 1.2674418604651163) internal successors, (109), 87 states have internal predecessors, (109), 7 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2021-05-06 11:20:51,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 121 transitions. [2021-05-06 11:20:51,713 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 121 transitions. Word has length 38 [2021-05-06 11:20:51,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:20:51,715 INFO L480 AbstractCegarLoop]: Abstraction has 98 states and 121 transitions. [2021-05-06 11:20:51,715 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 11 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) [2021-05-06 11:20:51,715 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 121 transitions. [2021-05-06 11:20:51,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-05-06 11:20:51,722 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:20:51,722 INFO L523 BasicCegarLoop]: trace histogram [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] [2021-05-06 11:20:51,722 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-05-06 11:20:51,722 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:20:51,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:20:51,723 INFO L82 PathProgramCache]: Analyzing trace with hash -1669063770, now seen corresponding path program 1 times [2021-05-06 11:20:51,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:20:51,723 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [750721014] [2021-05-06 11:20:51,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:20:51,744 WARN L240 tifierPushTermWalker]: treesize reduction 11, result has 87.8 percent of original size [2021-05-06 11:20:51,783 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-06 11:20:51,784 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-06 11:20:51,795 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-06 11:20:51,796 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-06 11:20:51,797 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-06 11:20:51,799 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-06 11:20:51,809 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-06 11:20:51,810 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-06 11:20:51,816 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-06 11:20:51,826 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-06 11:20:51,831 WARN L245 tifierPushTermWalker]: treesize reduction 11, result has 87.8 percent of original size 79 [2021-05-06 11:20:51,860 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2021-05-06 11:20:51,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 11:20:51,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 11:20:51,876 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-06 11:20:51,883 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (= (select (select |#memory_int_6| parse_expression_list_~str.base_7) (+ .v_it_2.0 parse_expression_list_~i~0_7 parse_expression_list_~str.offset_7 1)) 0)) [2021-05-06 11:20:51,884 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (= (select (select |#memory_int_6| parse_expression_list_~str.base_7) (+ .v_it_2.1 parse_expression_list_~i~0_7 parse_expression_list_~str.offset_7 1)) 0)) [2021-05-06 11:20:51,884 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (= (select (select |#memory_int_6| parse_expression_list_~str.base_7) (+ .v_it_2.2 parse_expression_list_~i~0_7 parse_expression_list_~str.offset_7 1)) 0)) [2021-05-06 11:20:51,884 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (= (select (select |#memory_int_6| parse_expression_list_~str.base_7) (+ .v_it_2.3 parse_expression_list_~i~0_7 parse_expression_list_~str.offset_7 1)) 0)) [2021-05-06 11:20:51,885 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (= (select (select |#memory_int_6| parse_expression_list_~str.base_7) (+ .v_it_2.4 parse_expression_list_~i~0_7 parse_expression_list_~str.offset_7 1)) 0)) [2021-05-06 11:20:51,885 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (= (select (select |#memory_int_6| parse_expression_list_~str.base_7) (+ .v_it_2.5 parse_expression_list_~i~0_7 parse_expression_list_~str.offset_7 1)) 0)) [2021-05-06 11:20:51,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2021-05-06 11:20:51,906 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2021-05-06 11:20:51,906 INFO L624 BasicCegarLoop]: Counterexample might be feasible [2021-05-06 11:20:51,910 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-05-06 11:20:51,921 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2021-05-06 11:20:51,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 11:20:51 BoogieIcfgContainer [2021-05-06 11:20:51,922 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-06 11:20:51,922 INFO L168 Benchmark]: Toolchain (without parser) took 4615.86 ms. Allocated memory was 195.0 MB in the beginning and 241.2 MB in the end (delta: 46.1 MB). Free memory was 159.5 MB in the beginning and 105.1 MB in the end (delta: 54.3 MB). Peak memory consumption was 101.8 MB. Max. memory is 8.0 GB. [2021-05-06 11:20:51,923 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 195.0 MB. Free memory is still 176.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-06 11:20:51,923 INFO L168 Benchmark]: CACSL2BoogieTranslator took 355.16 ms. Allocated memory is still 195.0 MB. Free memory was 159.3 MB in the beginning and 175.4 MB in the end (delta: -16.2 MB). Peak memory consumption was 11.7 MB. Max. memory is 8.0 GB. [2021-05-06 11:20:51,923 INFO L168 Benchmark]: Boogie Preprocessor took 60.08 ms. Allocated memory is still 195.0 MB. Free memory was 175.4 MB in the beginning and 173.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-05-06 11:20:51,923 INFO L168 Benchmark]: RCFGBuilder took 515.65 ms. Allocated memory is still 195.0 MB. Free memory was 173.3 MB in the beginning and 146.4 MB in the end (delta: 26.9 MB). Peak memory consumption was 26.2 MB. Max. memory is 8.0 GB. [2021-05-06 11:20:51,924 INFO L168 Benchmark]: TraceAbstraction took 3675.61 ms. Allocated memory was 195.0 MB in the beginning and 241.2 MB in the end (delta: 46.1 MB). Free memory was 145.7 MB in the beginning and 105.1 MB in the end (delta: 40.6 MB). Peak memory consumption was 88.0 MB. Max. memory is 8.0 GB. [2021-05-06 11:20:51,925 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 195.0 MB. Free memory is still 176.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 355.16 ms. Allocated memory is still 195.0 MB. Free memory was 159.3 MB in the beginning and 175.4 MB in the end (delta: -16.2 MB). Peak memory consumption was 11.7 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 60.08 ms. Allocated memory is still 195.0 MB. Free memory was 175.4 MB in the beginning and 173.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 515.65 ms. Allocated memory is still 195.0 MB. Free memory was 173.3 MB in the beginning and 146.4 MB in the end (delta: 26.9 MB). Peak memory consumption was 26.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3675.61 ms. Allocated memory was 195.0 MB in the beginning and 241.2 MB in the end (delta: 46.1 MB). Free memory was 145.7 MB in the beginning and 105.1 MB in the end (delta: 40.6 MB). Peak memory consumption was 88.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 15]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L85] char A [2 + 2 + 4 +1]; [L86] A[2 + 2 + 4] = 0 [L87] CALL parse_expression_list (A) [L59] int start=0, i=-1, j=-1; [L60] char str2[2]; [L61] COND FALSE !(!str) [L63] i++ [L64] str[i] [L65] case 0: [L80] EXPR str[i] [L80] COND TRUE str[i] != 0 [L63] i++ [L64] str[i] [L65] case 0: [L66] EXPR str[start] [L66] (str[start] == ' ') || (str[start] == '\t') [L66] EXPR str[start] [L66] (str[start] == ' ') || (str[start] == '\t') [L66] COND FALSE !((str[start] == ' ') || (str[start] == '\t')) [L67] EXPR str[start] [L67] COND FALSE !(str[start] == '"') [L68] j = i-1 [L69] (0 < j) && ((str[j] == ' ') || (str[j] == '\t')) [L69] EXPR str[j] [L69] EXPR (str[j] == ' ') || (str[j] == '\t') [L69] EXPR str[j] [L69] EXPR (str[j] == ' ') || (str[j] == '\t') [L69] (0 < j) && ((str[j] == ' ') || (str[j] == '\t')) [L69] COND FALSE !((0 < j) && ((str[j] == ' ') || (str[j] == '\t'))) [L70] (0 < j) && (str[j] == '"') [L70] EXPR str[j] [L70] (0 < j) && (str[j] == '"') [L70] COND TRUE (0 < j) && (str[j] == '"') [L70] j-- [L71] COND TRUE start<=j [L72] CALL r_strncpy(str2, str+start, j-start+1) [L41] return strncpy(dest,src,n); [L72] RET r_strncpy(str2, str+start, j-start+1) [L73] CALL __VERIFIER_assert(j - start + 1 < 2) [L14] COND TRUE !(cond) [L15] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 3608.9ms, OverallIterations: 8, TraceHistogramMax: 2, EmptinessCheckTime: 22.9ms, AutomataDifference: 1821.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 13.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 340 SDtfs, 378 SDslu, 874 SDs, 0 SdLazy, 1207 SolverSat, 113 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 927.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 96 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 685.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=98occurred in iteration=7, InterpolantAutomatonStates: 56, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 118.6ms AutomataMinimizationTime, 7 MinimizatonAttempts, 126 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...