./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/list-ext-properties/test-0158_1-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/list-ext-properties/test-0158_1-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8fdeb5a608a809e67439a428636d313b7ceb3d25 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/list-ext-properties/test-0158_1-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8fdeb5a608a809e67439a428636d313b7ceb3d25 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 05:53:30,227 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 05:53:30,229 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 05:53:30,261 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 05:53:30,261 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 05:53:30,264 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 05:53:30,265 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 05:53:30,269 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 05:53:30,270 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 05:53:30,273 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 05:53:30,274 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 05:53:30,278 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 05:53:30,278 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 05:53:30,280 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 05:53:30,281 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 05:53:30,284 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 05:53:30,287 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 05:53:30,287 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 05:53:30,289 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 05:53:30,293 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 05:53:30,294 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 05:53:30,294 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 05:53:30,295 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 05:53:30,296 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 05:53:30,301 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 05:53:30,303 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 05:53:30,303 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 05:53:30,303 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 05:53:30,304 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 05:53:30,305 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 05:53:30,305 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 05:53:30,305 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 05:53:30,306 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 05:53:30,307 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 05:53:30,308 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 05:53:30,308 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 05:53:30,309 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 05:53:30,309 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 05:53:30,309 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 05:53:30,310 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 05:53:30,311 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 05:53:30,311 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-08-27 05:53:30,343 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 05:53:30,343 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 05:53:30,344 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 05:53:30,344 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 05:53:30,345 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 05:53:30,346 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 05:53:30,346 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 05:53:30,346 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 05:53:30,346 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 05:53:30,346 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 05:53:30,347 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 05:53:30,347 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 05:53:30,347 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 05:53:30,347 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-27 05:53:30,348 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-27 05:53:30,348 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-27 05:53:30,348 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 05:53:30,348 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-27 05:53:30,348 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 05:53:30,348 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 05:53:30,348 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 05:53:30,349 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 05:53:30,349 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 05:53:30,349 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 05:53:30,349 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 05:53:30,349 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 05:53:30,349 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 05:53:30,350 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-27 05:53:30,350 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 05:53:30,350 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8fdeb5a608a809e67439a428636d313b7ceb3d25 [2021-08-27 05:53:30,555 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 05:53:30,568 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 05:53:30,570 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 05:53:30,570 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 05:53:30,571 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 05:53:30,572 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-ext-properties/test-0158_1-2.i [2021-08-27 05:53:30,625 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5fb9a4867/6a89074b85684060a13c65b81a61be57/FLAGaf8eb04cf [2021-08-27 05:53:30,997 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 05:53:30,997 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext-properties/test-0158_1-2.i [2021-08-27 05:53:31,005 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5fb9a4867/6a89074b85684060a13c65b81a61be57/FLAGaf8eb04cf [2021-08-27 05:53:31,013 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5fb9a4867/6a89074b85684060a13c65b81a61be57 [2021-08-27 05:53:31,015 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 05:53:31,016 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-27 05:53:31,017 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 05:53:31,017 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 05:53:31,020 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 05:53:31,020 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 05:53:31" (1/1) ... [2021-08-27 05:53:31,021 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f04460f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:53:31, skipping insertion in model container [2021-08-27 05:53:31,021 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 05:53:31" (1/1) ... [2021-08-27 05:53:31,030 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 05:53:31,046 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 05:53:31,213 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 05:53:31,242 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 05:53:31,282 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 05:53:31,305 INFO L208 MainTranslator]: Completed translation [2021-08-27 05:53:31,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:53:31 WrapperNode [2021-08-27 05:53:31,306 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 05:53:31,306 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 05:53:31,306 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 05:53:31,307 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 05:53:31,313 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:53:31" (1/1) ... [2021-08-27 05:53:31,313 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:53:31" (1/1) ... [2021-08-27 05:53:31,338 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:53:31" (1/1) ... [2021-08-27 05:53:31,338 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:53:31" (1/1) ... [2021-08-27 05:53:31,346 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:53:31" (1/1) ... [2021-08-27 05:53:31,347 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:53:31" (1/1) ... [2021-08-27 05:53:31,349 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:53:31" (1/1) ... [2021-08-27 05:53:31,352 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 05:53:31,356 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 05:53:31,356 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 05:53:31,356 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 05:53:31,357 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:53:31" (1/1) ... [2021-08-27 05:53:31,362 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 05:53:31,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 05:53:31,381 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) [2021-08-27 05:53:31,412 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 [2021-08-27 05:53:31,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-27 05:53:31,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 05:53:31,425 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-08-27 05:53:31,426 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-08-27 05:53:31,426 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-08-27 05:53:31,426 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-08-27 05:53:31,426 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-08-27 05:53:31,427 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-08-27 05:53:31,427 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-27 05:53:31,427 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-27 05:53:31,427 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-08-27 05:53:31,428 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-08-27 05:53:31,428 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-08-27 05:53:31,428 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-08-27 05:53:31,428 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 05:53:31,428 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-08-27 05:53:31,428 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-08-27 05:53:31,429 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-08-27 05:53:31,429 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-08-27 05:53:31,429 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-08-27 05:53:31,429 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-08-27 05:53:31,429 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-08-27 05:53:31,429 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-08-27 05:53:31,429 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-08-27 05:53:31,429 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-08-27 05:53:31,430 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-08-27 05:53:31,430 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-08-27 05:53:31,430 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-08-27 05:53:31,430 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-08-27 05:53:31,430 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-08-27 05:53:31,430 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-08-27 05:53:31,430 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-08-27 05:53:31,430 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-08-27 05:53:31,431 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-08-27 05:53:31,431 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-08-27 05:53:31,431 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-08-27 05:53:31,431 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-08-27 05:53:31,431 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-08-27 05:53:31,431 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-08-27 05:53:31,432 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-08-27 05:53:31,432 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-08-27 05:53:31,432 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-08-27 05:53:31,432 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-08-27 05:53:31,432 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-08-27 05:53:31,432 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-08-27 05:53:31,432 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-08-27 05:53:31,432 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-08-27 05:53:31,433 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-08-27 05:53:31,433 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-08-27 05:53:31,433 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-08-27 05:53:31,434 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-08-27 05:53:31,434 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-08-27 05:53:31,434 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-08-27 05:53:31,434 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-08-27 05:53:31,434 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-08-27 05:53:31,434 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-08-27 05:53:31,435 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-08-27 05:53:31,435 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-08-27 05:53:31,435 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-08-27 05:53:31,435 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-08-27 05:53:31,435 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-08-27 05:53:31,435 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-08-27 05:53:31,435 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-08-27 05:53:31,435 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-08-27 05:53:31,436 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-08-27 05:53:31,436 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-08-27 05:53:31,436 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-08-27 05:53:31,436 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-08-27 05:53:31,437 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-08-27 05:53:31,437 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-08-27 05:53:31,437 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-08-27 05:53:31,437 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-08-27 05:53:31,438 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-08-27 05:53:31,438 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-08-27 05:53:31,438 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-08-27 05:53:31,438 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-08-27 05:53:31,438 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-08-27 05:53:31,438 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-08-27 05:53:31,438 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-08-27 05:53:31,438 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-08-27 05:53:31,439 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-08-27 05:53:31,439 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-08-27 05:53:31,439 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-08-27 05:53:31,439 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-08-27 05:53:31,439 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-08-27 05:53:31,439 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-08-27 05:53:31,439 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-08-27 05:53:31,439 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-08-27 05:53:31,443 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-08-27 05:53:31,443 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-08-27 05:53:31,443 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-08-27 05:53:31,443 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-08-27 05:53:31,443 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-08-27 05:53:31,443 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-08-27 05:53:31,444 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-08-27 05:53:31,444 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-08-27 05:53:31,444 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-08-27 05:53:31,444 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-08-27 05:53:31,444 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-08-27 05:53:31,444 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-08-27 05:53:31,444 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-08-27 05:53:31,444 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-08-27 05:53:31,444 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-08-27 05:53:31,445 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-08-27 05:53:31,445 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-08-27 05:53:31,445 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-08-27 05:53:31,445 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-08-27 05:53:31,445 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-08-27 05:53:31,445 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-08-27 05:53:31,445 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-08-27 05:53:31,446 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-08-27 05:53:31,446 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-08-27 05:53:31,446 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-08-27 05:53:31,446 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-08-27 05:53:31,447 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-08-27 05:53:31,447 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-08-27 05:53:31,447 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-08-27 05:53:31,447 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-08-27 05:53:31,447 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-08-27 05:53:31,447 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-08-27 05:53:31,447 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-08-27 05:53:31,447 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-08-27 05:53:31,448 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-27 05:53:31,448 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-27 05:53:31,448 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-27 05:53:31,448 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-27 05:53:31,448 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-27 05:53:31,448 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-27 05:53:31,449 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-27 05:53:31,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 05:53:31,451 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 05:53:31,451 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-27 05:53:31,785 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 05:53:31,786 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-08-27 05:53:31,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 05:53:31 BoogieIcfgContainer [2021-08-27 05:53:31,787 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 05:53:31,788 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-27 05:53:31,788 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-27 05:53:31,790 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-27 05:53:31,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 05:53:31" (1/3) ... [2021-08-27 05:53:31,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58db0f48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 05:53:31, skipping insertion in model container [2021-08-27 05:53:31,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:53:31" (2/3) ... [2021-08-27 05:53:31,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58db0f48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 05:53:31, skipping insertion in model container [2021-08-27 05:53:31,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 05:53:31" (3/3) ... [2021-08-27 05:53:31,792 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0158_1-2.i [2021-08-27 05:53:31,795 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-27 05:53:31,795 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-08-27 05:53:31,819 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-27 05:53:31,823 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=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=FAST_UPR [2021-08-27 05:53:31,823 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-08-27 05:53:31,831 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 25 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-27 05:53:31,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-27 05:53:31,836 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:53:31,836 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:53:31,836 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 6 more)] === [2021-08-27 05:53:31,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:53:31,840 INFO L82 PathProgramCache]: Analyzing trace with hash -1484797383, now seen corresponding path program 1 times [2021-08-27 05:53:31,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:53:31,846 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031405146] [2021-08-27 05:53:31,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:53:31,846 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:53:31,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:53:32,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 05:53:32,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:53:32,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:53:32,055 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:53:32,055 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031405146] [2021-08-27 05:53:32,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031405146] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 05:53:32,055 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:53:32,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 05:53:32,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475519545] [2021-08-27 05:53:32,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 05:53:32,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:53:32,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 05:53:32,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 05:53:32,071 INFO L87 Difference]: Start difference. First operand has 30 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 25 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:53:32,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:53:32,150 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2021-08-27 05:53:32,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-27 05:53:32,152 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-08-27 05:53:32,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:53:32,156 INFO L225 Difference]: With dead ends: 25 [2021-08-27 05:53:32,156 INFO L226 Difference]: Without dead ends: 22 [2021-08-27 05:53:32,158 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.8ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 05:53:32,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-08-27 05:53:32,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-08-27 05:53:32,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 18 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:53:32,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2021-08-27 05:53:32,177 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 7 [2021-08-27 05:53:32,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:53:32,178 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2021-08-27 05:53:32,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:53:32,178 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2021-08-27 05:53:32,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-27 05:53:32,178 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:53:32,179 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:53:32,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-27 05:53:32,179 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 6 more)] === [2021-08-27 05:53:32,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:53:32,180 INFO L82 PathProgramCache]: Analyzing trace with hash -1484797382, now seen corresponding path program 1 times [2021-08-27 05:53:32,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:53:32,181 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724736486] [2021-08-27 05:53:32,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:53:32,181 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:53:32,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:53:32,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 05:53:32,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:53:32,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:53:32,283 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:53:32,283 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724736486] [2021-08-27 05:53:32,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724736486] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 05:53:32,284 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:53:32,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 05:53:32,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841021429] [2021-08-27 05:53:32,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 05:53:32,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:53:32,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 05:53:32,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 05:53:32,286 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:53:32,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:53:32,322 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2021-08-27 05:53:32,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-27 05:53:32,322 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-08-27 05:53:32,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:53:32,323 INFO L225 Difference]: With dead ends: 17 [2021-08-27 05:53:32,323 INFO L226 Difference]: Without dead ends: 17 [2021-08-27 05:53:32,324 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.1ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 05:53:32,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-08-27 05:53:32,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-08-27 05:53:32,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:53:32,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2021-08-27 05:53:32,326 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 7 [2021-08-27 05:53:32,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:53:32,327 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2021-08-27 05:53:32,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:53:32,327 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2021-08-27 05:53:32,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-27 05:53:32,328 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:53:32,328 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:53:32,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-27 05:53:32,328 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr10ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 6 more)] === [2021-08-27 05:53:32,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:53:32,329 INFO L82 PathProgramCache]: Analyzing trace with hash 910104040, now seen corresponding path program 1 times [2021-08-27 05:53:32,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:53:32,329 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429433382] [2021-08-27 05:53:32,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:53:32,329 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:53:32,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:53:32,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 05:53:32,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:53:32,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:53:32,422 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 05:53:32,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429433382] [2021-08-27 05:53:32,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429433382] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 05:53:32,424 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:53:32,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 05:53:32,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050086652] [2021-08-27 05:53:32,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 05:53:32,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 05:53:32,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 05:53:32,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 05:53:32,428 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:53:32,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:53:32,475 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2021-08-27 05:53:32,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 05:53:32,476 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-08-27 05:53:32,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:53:32,480 INFO L225 Difference]: With dead ends: 21 [2021-08-27 05:53:32,481 INFO L226 Difference]: Without dead ends: 21 [2021-08-27 05:53:32,481 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.5ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-27 05:53:32,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-08-27 05:53:32,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2021-08-27 05:53:32,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:53:32,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2021-08-27 05:53:32,484 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 14 [2021-08-27 05:53:32,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:53:32,485 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2021-08-27 05:53:32,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:53:32,485 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2021-08-27 05:53:32,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-27 05:53:32,485 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:53:32,486 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:53:32,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-27 05:53:32,486 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr10ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 6 more)] === [2021-08-27 05:53:32,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:53:32,487 INFO L82 PathProgramCache]: Analyzing trace with hash 1057867400, now seen corresponding path program 1 times [2021-08-27 05:53:32,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 05:53:32,487 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612419157] [2021-08-27 05:53:32,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:53:32,487 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 05:53:32,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 05:53:32,509 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 05:53:32,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 05:53:32,548 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 05:53:32,549 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-27 05:53:32,550 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr10ENSURES_VIOLATIONMEMORY_LEAK [2021-08-27 05:53:32,551 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-08-27 05:53:32,551 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-08-27 05:53:32,551 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-08-27 05:53:32,551 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-08-27 05:53:32,552 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-08-27 05:53:32,554 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-08-27 05:53:32,554 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-08-27 05:53:32,554 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-08-27 05:53:32,554 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION [2021-08-27 05:53:32,554 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION [2021-08-27 05:53:32,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-27 05:53:32,558 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-27 05:53:32,569 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2021-08-27 05:53:32,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 05:53:32 BoogieIcfgContainer [2021-08-27 05:53:32,576 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-27 05:53:32,577 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 05:53:32,577 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 05:53:32,577 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 05:53:32,577 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 05:53:31" (3/4) ... [2021-08-27 05:53:32,579 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-27 05:53:32,579 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 05:53:32,580 INFO L168 Benchmark]: Toolchain (without parser) took 1563.15 ms. Allocated memory was 50.3 MB in the beginning and 79.7 MB in the end (delta: 29.4 MB). Free memory was 25.1 MB in the beginning and 37.2 MB in the end (delta: -12.0 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-08-27 05:53:32,580 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 50.3 MB. Free memory was 32.0 MB in the beginning and 32.0 MB in the end (delta: 39.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 05:53:32,580 INFO L168 Benchmark]: CACSL2BoogieTranslator took 288.95 ms. Allocated memory was 50.3 MB in the beginning and 65.0 MB in the end (delta: 14.7 MB). Free memory was 24.9 MB in the beginning and 43.3 MB in the end (delta: -18.4 MB). Peak memory consumption was 3.8 MB. Max. memory is 16.1 GB. [2021-08-27 05:53:32,581 INFO L168 Benchmark]: Boogie Preprocessor took 45.39 ms. Allocated memory is still 65.0 MB. Free memory was 43.3 MB in the beginning and 41.0 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 05:53:32,581 INFO L168 Benchmark]: RCFGBuilder took 431.37 ms. Allocated memory is still 65.0 MB. Free memory was 40.8 MB in the beginning and 34.4 MB in the end (delta: 6.3 MB). Peak memory consumption was 20.1 MB. Max. memory is 16.1 GB. [2021-08-27 05:53:32,581 INFO L168 Benchmark]: TraceAbstraction took 788.23 ms. Allocated memory was 65.0 MB in the beginning and 79.7 MB in the end (delta: 14.7 MB). Free memory was 34.0 MB in the beginning and 37.5 MB in the end (delta: -3.5 MB). Peak memory consumption was 9.7 MB. Max. memory is 16.1 GB. [2021-08-27 05:53:32,581 INFO L168 Benchmark]: Witness Printer took 2.10 ms. Allocated memory is still 79.7 MB. Free memory was 37.5 MB in the beginning and 37.2 MB in the end (delta: 310.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 05:53:32,584 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 50.3 MB. Free memory was 32.0 MB in the beginning and 32.0 MB in the end (delta: 39.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 288.95 ms. Allocated memory was 50.3 MB in the beginning and 65.0 MB in the end (delta: 14.7 MB). Free memory was 24.9 MB in the beginning and 43.3 MB in the end (delta: -18.4 MB). Peak memory consumption was 3.8 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 45.39 ms. Allocated memory is still 65.0 MB. Free memory was 43.3 MB in the beginning and 41.0 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 431.37 ms. Allocated memory is still 65.0 MB. Free memory was 40.8 MB in the beginning and 34.4 MB in the end (delta: 6.3 MB). Peak memory consumption was 20.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 788.23 ms. Allocated memory was 65.0 MB in the beginning and 79.7 MB in the end (delta: 14.7 MB). Free memory was 34.0 MB in the beginning and 37.5 MB in the end (delta: -3.5 MB). Peak memory consumption was 9.7 MB. Max. memory is 16.1 GB. * Witness Printer took 2.10 ms. Allocated memory is still 79.7 MB. Free memory was 37.5 MB in the beginning and 37.2 MB in the end (delta: 310.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 524]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 524. Possible FailurePath: [L526-L533] union { void *p0; struct { char c[2]; int p1; int p2; } str; } data; [L534] data.p0 = malloc(37U) VAL [data={3:0}, malloc(37U)={-1:0}] [L535] COND FALSE !(__VERIFIER_nondet_int()) [L538] data.str.p2 = 30 VAL [data={3:0}] [L540] EXPR data.str.p2 VAL [data={3:0}, data.str.p2=30] [L540] COND FALSE !(25 > data.str.p2) [L543] return 0; [L543] return 0; VAL [\result=0] - UnprovableResult [Line: 534]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 534]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 536]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 536]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 48 locations, 11 error locations. Started 1 CEGAR loops. OverallTime: 739.1ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 8.0ms, AutomataDifference: 189.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 5.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 36 SDtfs, 26 SDslu, 41 SDs, 0 SdLazy, 97 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 103.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 68.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=0, InterpolantAutomatonStates: 13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 17.0ms AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 16.9ms SsaConstructionTime, 97.0ms SatisfiabilityAnalysisTime, 241.3ms InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 25 ConstructedInterpolants, 0 QuantifiedInterpolants, 119 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-08-27 05:53:32,617 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... ### Bit-precise run ### This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 05:53:34,088 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 05:53:34,089 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 05:53:34,110 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-08-27 05:53:34,117 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 05:53:34,118 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 05:53:34,119 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 05:53:34,120 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 05:53:34,120 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 05:53:34,121 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 05:53:34,122 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 05:53:34,123 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 05:53:34,124 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 05:53:34,124 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 05:53:34,125 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 05:53:34,126 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 05:53:34,127 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 05:53:34,128 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 05:53:34,128 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 05:53:34,128 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 05:53:34,129 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 05:53:34,129 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 05:53:34,130 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 05:53:34,130 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 05:53:34,131 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 05:53:34,131 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 05:53:34,132 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 05:53:34,132 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 05:53:34,133 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 05:53:34,133 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 05:53:34,133 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 05:53:34,134 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 05:53:34,134 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 05:53:34,135 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-08-27 05:53:34,149 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 05:53:34,149 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 05:53:34,150 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 05:53:34,150 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 05:53:34,151 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 05:53:34,151 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 05:53:34,151 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 05:53:34,151 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 05:53:34,152 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 05:53:34,152 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 05:53:34,152 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 05:53:34,152 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 05:53:34,152 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 05:53:34,153 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-27 05:53:34,153 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-27 05:53:34,153 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-27 05:53:34,153 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 05:53:34,153 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-27 05:53:34,154 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-08-27 05:53:34,154 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-08-27 05:53:34,154 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 05:53:34,154 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 05:53:34,154 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 05:53:34,155 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 05:53:34,155 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 05:53:34,155 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 05:53:34,155 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 05:53:34,155 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 05:53:34,156 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-08-27 05:53:34,156 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-08-27 05:53:34,156 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 05:53:34,156 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-27 05:53:34,156 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8fdeb5a608a809e67439a428636d313b7ceb3d25 [2021-08-27 05:53:34,404 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 05:53:34,417 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 05:53:34,419 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 05:53:34,420 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 05:53:34,421 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 05:53:34,421 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-ext-properties/test-0158_1-2.i [2021-08-27 05:53:34,468 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d02818b41/4f380a3bf3414bbe80f882c71b33ff35/FLAG7bb0d253f [2021-08-27 05:53:34,816 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 05:53:34,816 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext-properties/test-0158_1-2.i [2021-08-27 05:53:34,825 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d02818b41/4f380a3bf3414bbe80f882c71b33ff35/FLAG7bb0d253f [2021-08-27 05:53:35,218 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d02818b41/4f380a3bf3414bbe80f882c71b33ff35 [2021-08-27 05:53:35,219 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 05:53:35,220 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-27 05:53:35,221 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 05:53:35,221 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 05:53:35,226 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 05:53:35,226 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 05:53:35" (1/1) ... [2021-08-27 05:53:35,227 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42853d1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:53:35, skipping insertion in model container [2021-08-27 05:53:35,227 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 05:53:35" (1/1) ... [2021-08-27 05:53:35,231 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 05:53:35,254 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 05:53:35,492 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 05:53:35,501 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 05:53:35,534 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 05:53:35,559 INFO L208 MainTranslator]: Completed translation [2021-08-27 05:53:35,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:53:35 WrapperNode [2021-08-27 05:53:35,560 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 05:53:35,561 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 05:53:35,562 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 05:53:35,562 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 05:53:35,569 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:53:35" (1/1) ... [2021-08-27 05:53:35,569 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:53:35" (1/1) ... [2021-08-27 05:53:35,597 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:53:35" (1/1) ... [2021-08-27 05:53:35,598 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:53:35" (1/1) ... [2021-08-27 05:53:35,608 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:53:35" (1/1) ... [2021-08-27 05:53:35,609 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:53:35" (1/1) ... [2021-08-27 05:53:35,611 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:53:35" (1/1) ... [2021-08-27 05:53:35,614 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 05:53:35,615 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 05:53:35,615 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 05:53:35,615 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 05:53:35,616 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:53:35" (1/1) ... [2021-08-27 05:53:35,620 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 05:53:35,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 05:53:35,635 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) [2021-08-27 05:53:35,650 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 [2021-08-27 05:53:35,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-27 05:53:35,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 05:53:35,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-08-27 05:53:35,679 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-08-27 05:53:35,679 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-08-27 05:53:35,679 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-08-27 05:53:35,679 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-08-27 05:53:35,679 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-08-27 05:53:35,679 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-08-27 05:53:35,680 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-27 05:53:35,680 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-27 05:53:35,680 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-08-27 05:53:35,680 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-08-27 05:53:35,680 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-08-27 05:53:35,680 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-08-27 05:53:35,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 05:53:35,680 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-08-27 05:53:35,681 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-08-27 05:53:35,681 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-08-27 05:53:35,681 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-08-27 05:53:35,681 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-08-27 05:53:35,681 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-08-27 05:53:35,681 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-08-27 05:53:35,681 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-08-27 05:53:35,681 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-08-27 05:53:35,682 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-08-27 05:53:35,682 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-08-27 05:53:35,682 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-08-27 05:53:35,682 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-08-27 05:53:35,682 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-08-27 05:53:35,682 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-08-27 05:53:35,682 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-08-27 05:53:35,682 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-08-27 05:53:35,683 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-08-27 05:53:35,683 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-08-27 05:53:35,683 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-08-27 05:53:35,683 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-08-27 05:53:35,683 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-08-27 05:53:35,683 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-08-27 05:53:35,683 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-08-27 05:53:35,683 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-08-27 05:53:35,684 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-08-27 05:53:35,684 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-08-27 05:53:35,684 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-08-27 05:53:35,684 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-08-27 05:53:35,684 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-08-27 05:53:35,684 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-08-27 05:53:35,684 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-08-27 05:53:35,684 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-08-27 05:53:35,685 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-08-27 05:53:35,685 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-08-27 05:53:35,685 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-08-27 05:53:35,685 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-08-27 05:53:35,685 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-08-27 05:53:35,685 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-08-27 05:53:35,685 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-08-27 05:53:35,685 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-08-27 05:53:35,686 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-08-27 05:53:35,686 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-08-27 05:53:35,686 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-08-27 05:53:35,686 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-08-27 05:53:35,686 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-08-27 05:53:35,686 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-08-27 05:53:35,686 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-08-27 05:53:35,686 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-08-27 05:53:35,687 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-08-27 05:53:35,687 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-08-27 05:53:35,687 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-08-27 05:53:35,687 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-08-27 05:53:35,687 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-08-27 05:53:35,687 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-08-27 05:53:35,687 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-08-27 05:53:35,687 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-08-27 05:53:35,692 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-08-27 05:53:35,692 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-08-27 05:53:35,692 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-08-27 05:53:35,692 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-08-27 05:53:35,692 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-08-27 05:53:35,692 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-08-27 05:53:35,692 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-08-27 05:53:35,692 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-08-27 05:53:35,693 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-08-27 05:53:35,693 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-08-27 05:53:35,693 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-08-27 05:53:35,693 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-08-27 05:53:35,693 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-08-27 05:53:35,693 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-08-27 05:53:35,693 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-08-27 05:53:35,693 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-08-27 05:53:35,694 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-08-27 05:53:35,694 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-08-27 05:53:35,694 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-08-27 05:53:35,694 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-08-27 05:53:35,694 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-08-27 05:53:35,694 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-08-27 05:53:35,694 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-08-27 05:53:35,694 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-08-27 05:53:35,694 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-08-27 05:53:35,695 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-08-27 05:53:35,695 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-08-27 05:53:35,695 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-08-27 05:53:35,695 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-08-27 05:53:35,695 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-08-27 05:53:35,695 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-08-27 05:53:35,695 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-08-27 05:53:35,695 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-08-27 05:53:35,695 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-08-27 05:53:35,696 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-08-27 05:53:35,696 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-08-27 05:53:35,696 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-08-27 05:53:35,696 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-08-27 05:53:35,696 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-08-27 05:53:35,696 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-08-27 05:53:35,696 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-08-27 05:53:35,696 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-08-27 05:53:35,697 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-08-27 05:53:35,697 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-08-27 05:53:35,697 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-08-27 05:53:35,697 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-08-27 05:53:35,697 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-08-27 05:53:35,697 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-08-27 05:53:35,697 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-08-27 05:53:35,697 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-08-27 05:53:35,698 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-27 05:53:35,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-27 05:53:35,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-27 05:53:35,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-08-27 05:53:35,698 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-08-27 05:53:35,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-08-27 05:53:35,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-27 05:53:35,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-27 05:53:35,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-08-27 05:53:35,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 05:53:35,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-08-27 05:53:35,699 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-08-27 05:53:35,699 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-27 05:53:36,082 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 05:53:36,083 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-08-27 05:53:36,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 05:53:36 BoogieIcfgContainer [2021-08-27 05:53:36,084 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 05:53:36,090 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-27 05:53:36,091 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-27 05:53:36,093 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-27 05:53:36,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 05:53:35" (1/3) ... [2021-08-27 05:53:36,094 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f4830a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 05:53:36, skipping insertion in model container [2021-08-27 05:53:36,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:53:35" (2/3) ... [2021-08-27 05:53:36,095 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f4830a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 05:53:36, skipping insertion in model container [2021-08-27 05:53:36,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 05:53:36" (3/3) ... [2021-08-27 05:53:36,096 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0158_1-2.i [2021-08-27 05:53:36,100 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-27 05:53:36,100 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-08-27 05:53:36,136 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-27 05:53:36,142 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=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=FAST_UPR [2021-08-27 05:53:36,142 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-08-27 05:53:36,151 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 25 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-27 05:53:36,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-27 05:53:36,165 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:53:36,166 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:53:36,166 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 6 more)] === [2021-08-27 05:53:36,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:53:36,170 INFO L82 PathProgramCache]: Analyzing trace with hash 1511250447, now seen corresponding path program 1 times [2021-08-27 05:53:36,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:53:36,178 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [626245147] [2021-08-27 05:53:36,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:53:36,179 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:53:36,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:53:36,182 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 05:53:36,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-08-27 05:53:36,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:53:36,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 05:53:36,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:53:36,408 INFO L354 Elim1Store]: treesize reduction 13, result has 35.0 percent of original size [2021-08-27 05:53:36,410 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 13 [2021-08-27 05:53:36,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:53:36,443 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:53:36,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:53:36,479 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 05:53:36,479 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [626245147] [2021-08-27 05:53:36,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [626245147] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 05:53:36,479 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:53:36,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-08-27 05:53:36,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326531939] [2021-08-27 05:53:36,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-27 05:53:36,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 05:53:36,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 05:53:36,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 05:53:36,497 INFO L87 Difference]: Start difference. First operand has 30 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 25 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:53:36,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:53:36,560 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2021-08-27 05:53:36,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 05:53:36,562 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-08-27 05:53:36,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:53:36,567 INFO L225 Difference]: With dead ends: 25 [2021-08-27 05:53:36,567 INFO L226 Difference]: Without dead ends: 22 [2021-08-27 05:53:36,568 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 05:53:36,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-08-27 05:53:36,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-08-27 05:53:36,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 18 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:53:36,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2021-08-27 05:53:36,590 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 7 [2021-08-27 05:53:36,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:53:36,591 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2021-08-27 05:53:36,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:53:36,592 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2021-08-27 05:53:36,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-27 05:53:36,592 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:53:36,592 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:53:36,603 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-08-27 05:53:36,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 05:53:36,799 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 6 more)] === [2021-08-27 05:53:36,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:53:36,800 INFO L82 PathProgramCache]: Analyzing trace with hash 1511250448, now seen corresponding path program 1 times [2021-08-27 05:53:36,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:53:36,800 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1409666443] [2021-08-27 05:53:36,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:53:36,801 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:53:36,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:53:36,802 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 05:53:36,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-08-27 05:53:36,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 05:53:36,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 05:53:36,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 05:53:36,957 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-08-27 05:53:36,957 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2021-08-27 05:53:36,962 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2021-08-27 05:53:36,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:53:36,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 05:53:37,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 05:53:37,050 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 05:53:37,050 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1409666443] [2021-08-27 05:53:37,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1409666443] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 05:53:37,050 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 05:53:37,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-08-27 05:53:37,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912645915] [2021-08-27 05:53:37,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 05:53:37,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 05:53:37,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 05:53:37,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-27 05:53:37,056 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:53:37,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 05:53:37,099 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2021-08-27 05:53:37,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 05:53:37,100 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-08-27 05:53:37,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 05:53:37,100 INFO L225 Difference]: With dead ends: 17 [2021-08-27 05:53:37,100 INFO L226 Difference]: Without dead ends: 17 [2021-08-27 05:53:37,101 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-27 05:53:37,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-08-27 05:53:37,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-08-27 05:53:37,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:53:37,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2021-08-27 05:53:37,103 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 7 [2021-08-27 05:53:37,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 05:53:37,103 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2021-08-27 05:53:37,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 05:53:37,104 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2021-08-27 05:53:37,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-27 05:53:37,104 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 05:53:37,104 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 05:53:37,111 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-08-27 05:53:37,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 05:53:37,311 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr10ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 6 more)] === [2021-08-27 05:53:37,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 05:53:37,311 INFO L82 PathProgramCache]: Analyzing trace with hash -127243832, now seen corresponding path program 1 times [2021-08-27 05:53:37,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 05:53:37,312 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1750899512] [2021-08-27 05:53:37,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 05:53:37,312 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 05:53:37,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 05:53:37,337 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 05:53:37,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-08-27 05:53:37,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 05:53:37,496 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 05:53:37,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 05:53:37,544 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-08-27 05:53:37,545 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-27 05:53:37,545 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr10ENSURES_VIOLATIONMEMORY_LEAK [2021-08-27 05:53:37,547 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-08-27 05:53:37,547 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-08-27 05:53:37,547 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-08-27 05:53:37,547 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-08-27 05:53:37,547 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-08-27 05:53:37,547 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-08-27 05:53:37,547 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-08-27 05:53:37,548 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-08-27 05:53:37,548 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION [2021-08-27 05:53:37,548 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION [2021-08-27 05:53:37,585 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-08-27 05:53:37,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 05:53:37,759 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-27 05:53:37,765 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2021-08-27 05:53:37,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 05:53:37 BoogieIcfgContainer [2021-08-27 05:53:37,772 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-27 05:53:37,773 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 05:53:37,773 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 05:53:37,773 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 05:53:37,776 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 05:53:36" (3/4) ... [2021-08-27 05:53:37,778 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-27 05:53:37,778 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 05:53:37,779 INFO L168 Benchmark]: Toolchain (without parser) took 2558.28 ms. Allocated memory was 54.5 MB in the beginning and 81.8 MB in the end (delta: 27.3 MB). Free memory was 30.5 MB in the beginning and 47.5 MB in the end (delta: -17.0 MB). Peak memory consumption was 11.2 MB. Max. memory is 16.1 GB. [2021-08-27 05:53:37,779 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 54.5 MB. Free memory was 36.9 MB in the beginning and 36.8 MB in the end (delta: 62.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 05:53:37,780 INFO L168 Benchmark]: CACSL2BoogieTranslator took 339.70 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 30.4 MB in the beginning and 43.4 MB in the end (delta: -13.0 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. [2021-08-27 05:53:37,780 INFO L168 Benchmark]: Boogie Preprocessor took 53.16 ms. Allocated memory is still 67.1 MB. Free memory was 43.4 MB in the beginning and 40.5 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 05:53:37,780 INFO L168 Benchmark]: RCFGBuilder took 468.65 ms. Allocated memory is still 67.1 MB. Free memory was 40.5 MB in the beginning and 46.1 MB in the end (delta: -5.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-08-27 05:53:37,781 INFO L168 Benchmark]: TraceAbstraction took 1681.48 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 45.4 MB in the beginning and 47.5 MB in the end (delta: -2.1 MB). Peak memory consumption was 13.7 MB. Max. memory is 16.1 GB. [2021-08-27 05:53:37,781 INFO L168 Benchmark]: Witness Printer took 5.36 ms. Allocated memory is still 81.8 MB. Free memory is still 47.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 05:53:37,783 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 54.5 MB. Free memory was 36.9 MB in the beginning and 36.8 MB in the end (delta: 62.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 339.70 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 30.4 MB in the beginning and 43.4 MB in the end (delta: -13.0 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 53.16 ms. Allocated memory is still 67.1 MB. Free memory was 43.4 MB in the beginning and 40.5 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 468.65 ms. Allocated memory is still 67.1 MB. Free memory was 40.5 MB in the beginning and 46.1 MB in the end (delta: -5.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1681.48 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 45.4 MB in the beginning and 47.5 MB in the end (delta: -2.1 MB). Peak memory consumption was 13.7 MB. Max. memory is 16.1 GB. * Witness Printer took 5.36 ms. Allocated memory is still 81.8 MB. Free memory is still 47.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 524]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 524. Possible FailurePath: [L526-L533] union { void *p0; struct { char c[2]; int p1; int p2; } str; } data; [L534] data.p0 = malloc(37U) VAL [data={15:0}, malloc(37U)={1:0}] [L535] COND FALSE !(__VERIFIER_nondet_int()) [L538] data.str.p2 = 30 VAL [data={15:0}] [L540] EXPR data.str.p2 VAL [data={15:0}, data.str.p2=30] [L540] COND FALSE !(25 > data.str.p2) [L543] return 0; [L543] return 0; VAL [\result=0] - UnprovableResult [Line: 534]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 534]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 536]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 536]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 54 locations, 11 error locations. Started 1 CEGAR loops. OverallTime: 1623.0ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 17.4ms, AutomataDifference: 128.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 6.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 27 SDtfs, 35 SDslu, 11 SDs, 0 SdLazy, 23 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 73.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=0, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 12.8ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 36.0ms SsaConstructionTime, 73.2ms SatisfiabilityAnalysisTime, 284.8ms InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 24 ConstructedInterpolants, 1 QuantifiedInterpolants, 62 SizeOfPredicates, 5 NumberOfNonLiveVariables, 122 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-08-27 05:53:37,812 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...