/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 0.2.2-dev-d966a43 [2022-01-31 20:41:17,226 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 20:41:17,227 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 20:41:17,246 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-31 20:41:17,247 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-31 20:41:17,247 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-31 20:41:17,248 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-31 20:41:17,249 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-31 20:41:17,250 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-31 20:41:17,251 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-31 20:41:17,251 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-31 20:41:17,252 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-31 20:41:17,252 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 20:41:17,253 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 20:41:17,253 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 20:41:17,254 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 20:41:17,255 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 20:41:17,255 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 20:41:17,256 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 20:41:17,257 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 20:41:17,258 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 20:41:17,259 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 20:41:17,259 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 20:41:17,260 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 20:41:17,261 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-31 20:41:17,263 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-31 20:41:17,263 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-31 20:41:17,264 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-31 20:41:17,264 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-31 20:41:17,265 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-31 20:41:17,265 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-31 20:41:17,265 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-31 20:41:17,266 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-31 20:41:17,266 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 20:41:17,266 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 20:41:17,267 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 20:41:17,278 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-01-31 20:41:17,287 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 20:41:17,287 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 20:41:17,294 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 20:41:17,294 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 20:41:17,294 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 20:41:17,294 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 20:41:17,294 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 20:41:17,294 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 20:41:17,294 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 20:41:17,294 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 20:41:17,295 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 20:41:17,295 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 20:41:17,295 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 20:41:17,295 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 20:41:17,295 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 20:41:17,295 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 20:41:17,295 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 20:41:17,295 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 20:41:17,295 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 20:41:17,296 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 20:41:17,296 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-01-31 20:41:17,296 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-31 20:41:17,296 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-01-31 20:41:17,297 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 20:41:17,482 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 20:41:17,494 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 20:41:17,496 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 20:41:17,497 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 20:41:17,497 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 20:41:17,498 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2022-01-31 20:41:17,538 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/837f7aa88/56b75d72f05e4f67aada14f36e7ed9b1/FLAG349bd8c7d [2022-01-31 20:41:17,912 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 20:41:17,912 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2022-01-31 20:41:17,916 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/837f7aa88/56b75d72f05e4f67aada14f36e7ed9b1/FLAG349bd8c7d [2022-01-31 20:41:17,933 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/837f7aa88/56b75d72f05e4f67aada14f36e7ed9b1 [2022-01-31 20:41:17,934 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 20:41:17,935 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-31 20:41:17,939 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 20:41:17,939 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 20:41:17,941 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 20:41:17,942 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 08:41:17" (1/1) ... [2022-01-31 20:41:17,943 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c5aa2a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:41:17, skipping insertion in model container [2022-01-31 20:41:17,943 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 08:41:17" (1/1) ... [2022-01-31 20:41:17,947 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 20:41:17,958 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 20:41:18,097 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/verisec_OpenSER_cases1_stripFullBoth_arr.i[840,853] [2022-01-31 20:41:18,163 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 20:41:18,172 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 20:41:18,188 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/verisec_OpenSER_cases1_stripFullBoth_arr.i[840,853] [2022-01-31 20:41:18,203 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 20:41:18,214 INFO L208 MainTranslator]: Completed translation [2022-01-31 20:41:18,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:41:18 WrapperNode [2022-01-31 20:41:18,215 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 20:41:18,216 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 20:41:18,216 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 20:41:18,216 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 20:41:18,224 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:41:18" (1/1) ... [2022-01-31 20:41:18,224 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:41:18" (1/1) ... [2022-01-31 20:41:18,237 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:41:18" (1/1) ... [2022-01-31 20:41:18,237 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:41:18" (1/1) ... [2022-01-31 20:41:18,253 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:41:18" (1/1) ... [2022-01-31 20:41:18,260 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:41:18" (1/1) ... [2022-01-31 20:41:18,263 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:41:18" (1/1) ... [2022-01-31 20:41:18,265 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 20:41:18,266 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 20:41:18,266 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 20:41:18,266 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 20:41:18,271 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:41:18" (1/1) ... [2022-01-31 20:41:18,276 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 20:41:18,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 20:41:18,294 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) [2022-01-31 20:41:18,315 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 [2022-01-31 20:41:18,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 20:41:18,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 20:41:18,322 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 20:41:18,322 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-01-31 20:41:18,323 INFO L138 BoogieDeclarations]: Found implementation of procedure r_strncpy [2022-01-31 20:41:18,323 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_expression_list [2022-01-31 20:41:18,323 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 20:41:18,323 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 20:41:18,323 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 20:41:18,323 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-01-31 20:41:18,324 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-01-31 20:41:18,324 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 20:41:18,324 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 20:41:18,324 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-31 20:41:18,325 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2022-01-31 20:41:18,325 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2022-01-31 20:41:18,325 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2022-01-31 20:41:18,325 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2022-01-31 20:41:18,325 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy_ptr [2022-01-31 20:41:18,325 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2022-01-31 20:41:18,326 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2022-01-31 20:41:18,326 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2022-01-31 20:41:18,326 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2022-01-31 20:41:18,326 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2022-01-31 20:41:18,326 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2022-01-31 20:41:18,326 INFO L130 BoogieDeclarations]: Found specification of procedure isascii [2022-01-31 20:41:18,326 INFO L130 BoogieDeclarations]: Found specification of procedure isspace [2022-01-31 20:41:18,326 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2022-01-31 20:41:18,326 INFO L130 BoogieDeclarations]: Found specification of procedure strrand [2022-01-31 20:41:18,326 INFO L130 BoogieDeclarations]: Found specification of procedure istrrand [2022-01-31 20:41:18,326 INFO L130 BoogieDeclarations]: Found specification of procedure istrchr [2022-01-31 20:41:18,327 INFO L130 BoogieDeclarations]: Found specification of procedure istrrchr [2022-01-31 20:41:18,327 INFO L130 BoogieDeclarations]: Found specification of procedure istrncmp [2022-01-31 20:41:18,327 INFO L130 BoogieDeclarations]: Found specification of procedure istrstr [2022-01-31 20:41:18,327 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncpy [2022-01-31 20:41:18,327 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcpy [2022-01-31 20:41:18,327 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcat [2022-01-31 20:41:18,327 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncat [2022-01-31 20:41:18,327 INFO L130 BoogieDeclarations]: Found specification of procedure r_memcpy [2022-01-31 20:41:18,328 INFO L130 BoogieDeclarations]: Found specification of procedure parse_expression_list [2022-01-31 20:41:18,328 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-31 20:41:18,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 20:41:18,328 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 20:41:18,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 20:41:18,328 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 20:41:18,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 20:41:18,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 20:41:18,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 20:41:18,455 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 20:41:18,456 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 20:41:18,640 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 20:41:18,647 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 20:41:18,647 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-31 20:41:18,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 08:41:18 BoogieIcfgContainer [2022-01-31 20:41:18,650 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 20:41:18,651 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 20:41:18,651 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 20:41:18,653 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 20:41:18,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 08:41:17" (1/3) ... [2022-01-31 20:41:18,654 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77216093 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 08:41:18, skipping insertion in model container [2022-01-31 20:41:18,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:41:18" (2/3) ... [2022-01-31 20:41:18,655 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77216093 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 08:41:18, skipping insertion in model container [2022-01-31 20:41:18,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 08:41:18" (3/3) ... [2022-01-31 20:41:18,656 INFO L111 eAbstractionObserver]: Analyzing ICFG verisec_OpenSER_cases1_stripFullBoth_arr.i [2022-01-31 20:41:18,659 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-01-31 20:41:18,660 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 20:41:18,695 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 20:41:18,702 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=AcceleratedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, 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, mLoopAccelerationTechnique=JORDAN [2022-01-31 20:41:18,702 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 20:41:18,714 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) [2022-01-31 20:41:18,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-31 20:41:18,721 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:41:18,722 INFO L514 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] [2022-01-31 20:41:18,722 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:41:18,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:41:18,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1687048304, now seen corresponding path program 1 times [2022-01-31 20:41:18,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:41:18,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [959075352] [2022-01-31 20:41:18,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:41:18,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:41:18,779 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:41:18,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:41:18,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:41:18,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:41:18,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-31 20:41:18,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:41:18,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 20:41:18,892 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:41:18,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [959075352] [2022-01-31 20:41:18,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [959075352] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:41:18,894 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:41:18,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-31 20:41:18,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702636611] [2022-01-31 20:41:18,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:41:18,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-31 20:41:18,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:41:18,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-31 20:41:18,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 20:41:18,920 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) [2022-01-31 20:41:18,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:41:18,978 INFO L93 Difference]: Finished difference Result 93 states and 123 transitions. [2022-01-31 20:41:18,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-31 20:41:18,989 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 [2022-01-31 20:41:18,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:41:18,994 INFO L225 Difference]: With dead ends: 93 [2022-01-31 20:41:18,994 INFO L226 Difference]: Without dead ends: 43 [2022-01-31 20:41:18,996 INFO L932 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 [2022-01-31 20:41:18,999 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 49 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 62 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 [2022-01-31 20:41:18,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 62 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 20:41:19,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-01-31 20:41:19,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2022-01-31 20:41:19,029 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) [2022-01-31 20:41:19,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 52 transitions. [2022-01-31 20:41:19,032 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 52 transitions. Word has length 29 [2022-01-31 20:41:19,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:41:19,032 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 52 transitions. [2022-01-31 20:41:19,032 INFO L471 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) [2022-01-31 20:41:19,033 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 52 transitions. [2022-01-31 20:41:19,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-31 20:41:19,035 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:41:19,035 INFO L514 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] [2022-01-31 20:41:19,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 20:41:19,035 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:41:19,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:41:19,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1509330471, now seen corresponding path program 1 times [2022-01-31 20:41:19,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:41:19,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1182099898] [2022-01-31 20:41:19,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:41:19,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:41:19,046 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:41:19,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:41:19,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:41:19,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:41:19,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-01-31 20:41:19,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:41:19,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 20:41:19,142 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:41:19,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1182099898] [2022-01-31 20:41:19,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1182099898] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:41:19,143 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:41:19,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-31 20:41:19,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212832737] [2022-01-31 20:41:19,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:41:19,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-31 20:41:19,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:41:19,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-31 20:41:19,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 20:41:19,147 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) [2022-01-31 20:41:19,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:41:19,237 INFO L93 Difference]: Finished difference Result 78 states and 97 transitions. [2022-01-31 20:41:19,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-31 20:41:19,238 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 [2022-01-31 20:41:19,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:41:19,240 INFO L225 Difference]: With dead ends: 78 [2022-01-31 20:41:19,240 INFO L226 Difference]: Without dead ends: 44 [2022-01-31 20:41:19,243 INFO L932 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 [2022-01-31 20:41:19,244 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 42 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 20:41:19,245 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 56 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 20:41:19,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-01-31 20:41:19,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2022-01-31 20:41:19,257 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) [2022-01-31 20:41:19,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2022-01-31 20:41:19,261 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 33 [2022-01-31 20:41:19,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:41:19,262 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2022-01-31 20:41:19,262 INFO L471 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) [2022-01-31 20:41:19,262 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2022-01-31 20:41:19,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-31 20:41:19,263 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:41:19,263 INFO L514 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] [2022-01-31 20:41:19,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-31 20:41:19,264 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:41:19,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:41:19,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1932032297, now seen corresponding path program 1 times [2022-01-31 20:41:19,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:41:19,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1387714149] [2022-01-31 20:41:19,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:41:19,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:41:19,267 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:41:19,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:41:19,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:41:19,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:41:19,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-01-31 20:41:19,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:41:19,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 20:41:19,364 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:41:19,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1387714149] [2022-01-31 20:41:19,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1387714149] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:41:19,365 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:41:19,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-31 20:41:19,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117419116] [2022-01-31 20:41:19,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:41:19,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-31 20:41:19,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:41:19,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-31 20:41:19,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-31 20:41:19,366 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) [2022-01-31 20:41:19,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:41:19,521 INFO L93 Difference]: Finished difference Result 106 states and 136 transitions. [2022-01-31 20:41:19,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-31 20:41:19,522 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 [2022-01-31 20:41:19,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:41:19,524 INFO L225 Difference]: With dead ends: 106 [2022-01-31 20:41:19,524 INFO L226 Difference]: Without dead ends: 71 [2022-01-31 20:41:19,525 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-01-31 20:41:19,529 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 96 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 20:41:19,530 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 61 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 20:41:19,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-01-31 20:41:19,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 52. [2022-01-31 20:41:19,545 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) [2022-01-31 20:41:19,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 64 transitions. [2022-01-31 20:41:19,548 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 64 transitions. Word has length 33 [2022-01-31 20:41:19,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:41:19,549 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 64 transitions. [2022-01-31 20:41:19,549 INFO L471 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) [2022-01-31 20:41:19,549 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 64 transitions. [2022-01-31 20:41:19,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-31 20:41:19,550 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:41:19,550 INFO L514 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] [2022-01-31 20:41:19,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-31 20:41:19,551 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:41:19,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:41:19,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1403704983, now seen corresponding path program 1 times [2022-01-31 20:41:19,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:41:19,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [819665312] [2022-01-31 20:41:19,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:41:19,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:41:19,553 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:41:19,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:41:19,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:41:19,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:41:19,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-01-31 20:41:19,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:41:19,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 20:41:19,680 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:41:19,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [819665312] [2022-01-31 20:41:19,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [819665312] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:41:19,681 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:41:19,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-31 20:41:19,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719167701] [2022-01-31 20:41:19,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:41:19,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-31 20:41:19,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:41:19,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-31 20:41:19,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-01-31 20:41:19,682 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) [2022-01-31 20:41:19,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:41:19,917 INFO L93 Difference]: Finished difference Result 106 states and 136 transitions. [2022-01-31 20:41:19,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-31 20:41:19,917 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 [2022-01-31 20:41:19,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:41:19,919 INFO L225 Difference]: With dead ends: 106 [2022-01-31 20:41:19,919 INFO L226 Difference]: Without dead ends: 104 [2022-01-31 20:41:19,919 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2022-01-31 20:41:19,920 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 187 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 20:41:19,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [189 Valid, 68 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 20:41:19,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2022-01-31 20:41:19,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 84. [2022-01-31 20:41:19,930 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) [2022-01-31 20:41:19,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 107 transitions. [2022-01-31 20:41:19,930 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 107 transitions. Word has length 33 [2022-01-31 20:41:19,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:41:19,930 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 107 transitions. [2022-01-31 20:41:19,931 INFO L471 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) [2022-01-31 20:41:19,931 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 107 transitions. [2022-01-31 20:41:19,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-31 20:41:19,932 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:41:19,932 INFO L514 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] [2022-01-31 20:41:19,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-31 20:41:19,932 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:41:19,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:41:19,932 INFO L85 PathProgramCache]: Analyzing trace with hash 590439723, now seen corresponding path program 1 times [2022-01-31 20:41:19,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:41:19,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [234664166] [2022-01-31 20:41:19,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:41:19,933 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:41:19,934 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:41:19,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:41:20,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:41:20,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:41:20,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-01-31 20:41:20,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:41:20,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 20:41:20,041 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:41:20,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [234664166] [2022-01-31 20:41:20,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [234664166] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:41:20,041 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:41:20,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-31 20:41:20,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137655666] [2022-01-31 20:41:20,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:41:20,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-31 20:41:20,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:41:20,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-31 20:41:20,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-01-31 20:41:20,042 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) [2022-01-31 20:41:20,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:41:20,269 INFO L93 Difference]: Finished difference Result 195 states and 257 transitions. [2022-01-31 20:41:20,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-31 20:41:20,270 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 [2022-01-31 20:41:20,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:41:20,273 INFO L225 Difference]: With dead ends: 195 [2022-01-31 20:41:20,273 INFO L226 Difference]: Without dead ends: 127 [2022-01-31 20:41:20,274 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-01-31 20:41:20,274 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 140 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 20:41:20,274 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 77 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 20:41:20,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2022-01-31 20:41:20,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 91. [2022-01-31 20:41:20,300 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) [2022-01-31 20:41:20,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 115 transitions. [2022-01-31 20:41:20,301 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 115 transitions. Word has length 33 [2022-01-31 20:41:20,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:41:20,303 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 115 transitions. [2022-01-31 20:41:20,303 INFO L471 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) [2022-01-31 20:41:20,303 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 115 transitions. [2022-01-31 20:41:20,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-31 20:41:20,305 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:41:20,305 INFO L514 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] [2022-01-31 20:41:20,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-31 20:41:20,305 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:41:20,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:41:20,306 INFO L85 PathProgramCache]: Analyzing trace with hash -532744798, now seen corresponding path program 1 times [2022-01-31 20:41:20,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:41:20,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1632211578] [2022-01-31 20:41:20,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:41:20,306 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:41:20,308 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 20:41:20,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:41:20,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:41:20,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:41:20,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-01-31 20:41:20,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:41:20,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 20:41:20,379 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:41:20,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1632211578] [2022-01-31 20:41:20,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1632211578] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:41:20,379 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:41:20,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-31 20:41:20,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969421040] [2022-01-31 20:41:20,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:41:20,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-31 20:41:20,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:41:20,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-31 20:41:20,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-31 20:41:20,380 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) [2022-01-31 20:41:20,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:41:20,527 INFO L93 Difference]: Finished difference Result 180 states and 227 transitions. [2022-01-31 20:41:20,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-31 20:41:20,527 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 [2022-01-31 20:41:20,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:41:20,528 INFO L225 Difference]: With dead ends: 180 [2022-01-31 20:41:20,528 INFO L226 Difference]: Without dead ends: 116 [2022-01-31 20:41:20,529 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2022-01-31 20:41:20,529 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 125 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 20:41:20,529 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 62 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 20:41:20,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-01-31 20:41:20,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 86. [2022-01-31 20:41:20,538 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) [2022-01-31 20:41:20,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 104 transitions. [2022-01-31 20:41:20,539 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 104 transitions. Word has length 35 [2022-01-31 20:41:20,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:41:20,539 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 104 transitions. [2022-01-31 20:41:20,539 INFO L471 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) [2022-01-31 20:41:20,539 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 104 transitions. [2022-01-31 20:41:20,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-01-31 20:41:20,540 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:41:20,540 INFO L514 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] [2022-01-31 20:41:20,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-31 20:41:20,540 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:41:20,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:41:20,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1949287377, now seen corresponding path program 1 times [2022-01-31 20:41:20,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:41:20,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2060557481] [2022-01-31 20:41:20,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:41:20,629 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:41:20,630 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 20:41:20,630 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:41:20,648 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (= 0 (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)))) [2022-01-31 20:41:20,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:41:20,669 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (= 0 (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)))) [2022-01-31 20:41:20,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 20:41:20,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:41:20,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-01-31 20:41:20,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 20:41:20,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 20:41:20,841 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 20:41:20,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2060557481] [2022-01-31 20:41:20,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [2060557481] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 20:41:20,842 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 20:41:20,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-01-31 20:41:20,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443158285] [2022-01-31 20:41:20,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 20:41:20,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-31 20:41:20,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 20:41:20,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-31 20:41:20,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-01-31 20:41:20,843 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) [2022-01-31 20:41:21,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 20:41:21,325 INFO L93 Difference]: Finished difference Result 163 states and 204 transitions. [2022-01-31 20:41:21,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-31 20:41:21,326 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 [2022-01-31 20:41:21,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 20:41:21,327 INFO L225 Difference]: With dead ends: 163 [2022-01-31 20:41:21,327 INFO L226 Difference]: Without dead ends: 119 [2022-01-31 20:41:21,327 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=136, Invalid=514, Unknown=0, NotChecked=0, Total=650 [2022-01-31 20:41:21,328 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 198 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 20:41:21,328 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [200 Valid, 91 Invalid, 656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 20:41:21,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-01-31 20:41:21,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 98. [2022-01-31 20:41:21,340 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) [2022-01-31 20:41:21,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 121 transitions. [2022-01-31 20:41:21,341 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 121 transitions. Word has length 38 [2022-01-31 20:41:21,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 20:41:21,341 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 121 transitions. [2022-01-31 20:41:21,341 INFO L471 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) [2022-01-31 20:41:21,341 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 121 transitions. [2022-01-31 20:41:21,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-01-31 20:41:21,342 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 20:41:21,342 INFO L514 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] [2022-01-31 20:41:21,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-31 20:41:21,342 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 20:41:21,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 20:41:21,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1669063770, now seen corresponding path program 1 times [2022-01-31 20:41:21,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 20:41:21,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [310517454] [2022-01-31 20:41:21,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 20:41:21,381 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 20:41:21,382 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 20:41:21,382 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 20:41:21,395 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_~str.offset_7 parse_expression_list_~i~0_7 1)) 0)) [2022-01-31 20:41:21,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-01-31 20:41:21,417 WARN L127 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2022-01-31 20:41:21,417 INFO L628 BasicCegarLoop]: Counterexample might be feasible [2022-01-31 20:41:21,422 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-31 20:41:21,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-31 20:41:21,424 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 20:41:21,426 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-31 20:41:21,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 08:41:21 BoogieIcfgContainer [2022-01-31 20:41:21,436 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-31 20:41:21,436 INFO L158 Benchmark]: Toolchain (without parser) took 3501.00ms. Allocated memory was 188.7MB in the beginning and 268.4MB in the end (delta: 79.7MB). Free memory was 138.3MB in the beginning and 117.8MB in the end (delta: 20.5MB). Peak memory consumption was 101.5MB. Max. memory is 8.0GB. [2022-01-31 20:41:21,436 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 188.7MB. Free memory is still 154.9MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-31 20:41:21,436 INFO L158 Benchmark]: CACSL2BoogieTranslator took 275.79ms. Allocated memory was 188.7MB in the beginning and 268.4MB in the end (delta: 79.7MB). Free memory was 138.1MB in the beginning and 241.3MB in the end (delta: -103.1MB). Peak memory consumption was 14.5MB. Max. memory is 8.0GB. [2022-01-31 20:41:21,437 INFO L158 Benchmark]: Boogie Preprocessor took 49.83ms. Allocated memory is still 268.4MB. Free memory was 241.3MB in the beginning and 239.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-31 20:41:21,437 INFO L158 Benchmark]: RCFGBuilder took 383.86ms. Allocated memory is still 268.4MB. Free memory was 239.2MB in the beginning and 222.4MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2022-01-31 20:41:21,437 INFO L158 Benchmark]: TraceAbstraction took 2784.76ms. Allocated memory is still 268.4MB. Free memory was 221.9MB in the beginning and 117.8MB in the end (delta: 104.1MB). Peak memory consumption was 104.1MB. Max. memory is 8.0GB. [2022-01-31 20:41:21,438 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 188.7MB. Free memory is still 154.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 275.79ms. Allocated memory was 188.7MB in the beginning and 268.4MB in the end (delta: 79.7MB). Free memory was 138.1MB in the beginning and 241.3MB in the end (delta: -103.1MB). Peak memory consumption was 14.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 49.83ms. Allocated memory is still 268.4MB. Free memory was 241.3MB in the beginning and 239.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 383.86ms. Allocated memory is still 268.4MB. Free memory was 239.2MB in the beginning and 222.4MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * TraceAbstraction took 2784.76ms. Allocated memory is still 268.4MB. Free memory was 221.9MB in the beginning and 117.8MB in the end (delta: 104.1MB). Peak memory consumption was 104.1MB. 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 - 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. OverallTime: 2.7s, OverallIterations: 8, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 852 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 837 mSDsluCounter, 477 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 137 mSDsCounter, 171 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1632 IncrementalHoareTripleChecker+Invalid, 1803 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 171 mSolverCounterUnsat, 340 mSDtfsCounter, 1632 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 113 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=98occurred in iteration=7, InterpolantAutomatonStates: 57, 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, 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 [2022-01-31 20:41:21,465 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...