./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/list-properties/splice-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-properties/splice-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 cac090f4bce8d8ee66db31cac76f8c06713c6de9 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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-properties/splice-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 cac090f4bce8d8ee66db31cac76f8c06713c6de9 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 06:50:52,897 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 06:50:52,899 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 06:50:52,916 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 06:50:52,917 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 06:50:52,917 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 06:50:52,918 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 06:50:52,920 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 06:50:52,921 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 06:50:52,925 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 06:50:52,925 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 06:50:52,930 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 06:50:52,930 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 06:50:52,935 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 06:50:52,936 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 06:50:52,938 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 06:50:52,938 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 06:50:52,940 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 06:50:52,941 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 06:50:52,944 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 06:50:52,947 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 06:50:52,948 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 06:50:52,948 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 06:50:52,950 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 06:50:52,957 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 06:50:52,958 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 06:50:52,958 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 06:50:52,959 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 06:50:52,960 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 06:50:52,961 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 06:50:52,961 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 06:50:52,961 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 06:50:52,962 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 06:50:52,964 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 06:50:52,965 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 06:50:52,965 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 06:50:52,966 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 06:50:52,966 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 06:50:52,966 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 06:50:52,967 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 06:50:52,968 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 06:50:52,968 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-08-27 06:50:52,996 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 06:50:52,996 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 06:50:52,997 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 06:50:52,997 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 06:50:52,999 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 06:50:52,999 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 06:50:52,999 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 06:50:52,999 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 06:50:52,999 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 06:50:52,999 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 06:50:53,000 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 06:50:53,000 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 06:50:53,001 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 06:50:53,001 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-27 06:50:53,001 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-27 06:50:53,001 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-27 06:50:53,001 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 06:50:53,001 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-27 06:50:53,001 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 06:50:53,002 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 06:50:53,002 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 06:50:53,002 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 06:50:53,002 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 06:50:53,002 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 06:50:53,002 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 06:50:53,002 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 06:50:53,003 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 06:50:53,003 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-27 06:50:53,003 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 06:50:53,003 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cac090f4bce8d8ee66db31cac76f8c06713c6de9 [2021-08-27 06:50:53,272 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 06:50:53,294 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 06:50:53,296 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 06:50:53,297 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 06:50:53,298 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 06:50:53,299 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-properties/splice-2.i [2021-08-27 06:50:53,352 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73d5cfdbf/08ce2eecf7d34390a36341157ee09cf0/FLAGcdae5a88d [2021-08-27 06:50:53,767 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 06:50:53,778 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-properties/splice-2.i [2021-08-27 06:50:53,790 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73d5cfdbf/08ce2eecf7d34390a36341157ee09cf0/FLAGcdae5a88d [2021-08-27 06:50:54,160 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73d5cfdbf/08ce2eecf7d34390a36341157ee09cf0 [2021-08-27 06:50:54,162 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 06:50:54,164 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-27 06:50:54,166 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 06:50:54,166 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 06:50:54,168 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 06:50:54,169 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 06:50:54" (1/1) ... [2021-08-27 06:50:54,170 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@310a668e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:50:54, skipping insertion in model container [2021-08-27 06:50:54,170 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 06:50:54" (1/1) ... [2021-08-27 06:50:54,175 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 06:50:54,210 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 06:50:54,436 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-properties/splice-2.i[23721,23734] [2021-08-27 06:50:54,438 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 06:50:54,443 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 06:50:54,470 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-properties/splice-2.i[23721,23734] [2021-08-27 06:50:54,471 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 06:50:54,491 INFO L208 MainTranslator]: Completed translation [2021-08-27 06:50:54,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:50:54 WrapperNode [2021-08-27 06:50:54,492 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 06:50:54,493 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 06:50:54,493 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 06:50:54,493 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 06:50:54,499 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:50:54" (1/1) ... [2021-08-27 06:50:54,499 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:50:54" (1/1) ... [2021-08-27 06:50:54,508 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:50:54" (1/1) ... [2021-08-27 06:50:54,508 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:50:54" (1/1) ... [2021-08-27 06:50:54,517 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:50:54" (1/1) ... [2021-08-27 06:50:54,523 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:50:54" (1/1) ... [2021-08-27 06:50:54,525 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:50:54" (1/1) ... [2021-08-27 06:50:54,528 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 06:50:54,529 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 06:50:54,529 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 06:50:54,529 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 06:50:54,530 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:50:54" (1/1) ... [2021-08-27 06:50:54,534 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 06:50:54,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 06:50:54,554 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 06:50:54,592 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 06:50:54,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-27 06:50:54,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 06:50:54,604 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-08-27 06:50:54,604 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-08-27 06:50:54,604 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-08-27 06:50:54,605 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-08-27 06:50:54,605 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-08-27 06:50:54,605 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-08-27 06:50:54,605 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-08-27 06:50:54,606 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-27 06:50:54,606 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-27 06:50:54,606 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-08-27 06:50:54,606 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-08-27 06:50:54,606 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-08-27 06:50:54,607 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-08-27 06:50:54,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 06:50:54,607 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-08-27 06:50:54,607 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-08-27 06:50:54,607 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-08-27 06:50:54,607 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-08-27 06:50:54,607 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-08-27 06:50:54,607 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-08-27 06:50:54,608 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-08-27 06:50:54,608 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-08-27 06:50:54,608 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-08-27 06:50:54,608 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-08-27 06:50:54,608 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-08-27 06:50:54,608 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-08-27 06:50:54,608 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-08-27 06:50:54,609 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-08-27 06:50:54,609 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-08-27 06:50:54,609 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-08-27 06:50:54,609 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-08-27 06:50:54,609 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-08-27 06:50:54,609 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-08-27 06:50:54,610 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-08-27 06:50:54,610 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-08-27 06:50:54,610 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-08-27 06:50:54,610 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-08-27 06:50:54,610 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-08-27 06:50:54,610 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-08-27 06:50:54,610 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-08-27 06:50:54,610 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-08-27 06:50:54,611 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-08-27 06:50:54,611 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-08-27 06:50:54,611 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-08-27 06:50:54,611 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-08-27 06:50:54,611 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-08-27 06:50:54,612 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-08-27 06:50:54,612 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-08-27 06:50:54,612 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-08-27 06:50:54,612 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-08-27 06:50:54,613 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-08-27 06:50:54,613 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-08-27 06:50:54,613 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-08-27 06:50:54,613 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-08-27 06:50:54,613 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-08-27 06:50:54,613 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-08-27 06:50:54,614 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-08-27 06:50:54,614 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-08-27 06:50:54,614 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-08-27 06:50:54,614 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-08-27 06:50:54,614 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-08-27 06:50:54,614 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-08-27 06:50:54,615 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-08-27 06:50:54,615 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-08-27 06:50:54,615 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-08-27 06:50:54,616 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-08-27 06:50:54,616 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-08-27 06:50:54,616 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-08-27 06:50:54,616 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-08-27 06:50:54,616 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-08-27 06:50:54,617 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-08-27 06:50:54,617 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-08-27 06:50:54,617 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-08-27 06:50:54,617 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-08-27 06:50:54,617 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-08-27 06:50:54,617 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-08-27 06:50:54,617 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-08-27 06:50:54,618 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-08-27 06:50:54,618 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-08-27 06:50:54,618 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-08-27 06:50:54,618 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-08-27 06:50:54,618 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-08-27 06:50:54,618 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-08-27 06:50:54,619 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-08-27 06:50:54,619 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-08-27 06:50:54,619 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-08-27 06:50:54,619 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-08-27 06:50:54,619 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-08-27 06:50:54,619 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-08-27 06:50:54,619 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-08-27 06:50:54,619 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-08-27 06:50:54,620 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-08-27 06:50:54,620 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-08-27 06:50:54,620 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-08-27 06:50:54,620 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-08-27 06:50:54,620 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-08-27 06:50:54,620 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-08-27 06:50:54,620 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-08-27 06:50:54,628 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-08-27 06:50:54,628 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-08-27 06:50:54,628 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-08-27 06:50:54,629 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-08-27 06:50:54,629 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-08-27 06:50:54,629 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-08-27 06:50:54,629 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-08-27 06:50:54,630 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-08-27 06:50:54,630 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-08-27 06:50:54,630 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-08-27 06:50:54,631 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-08-27 06:50:54,631 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-08-27 06:50:54,631 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-08-27 06:50:54,631 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-08-27 06:50:54,631 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-08-27 06:50:54,631 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-08-27 06:50:54,631 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-08-27 06:50:54,631 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-08-27 06:50:54,632 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-08-27 06:50:54,632 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-08-27 06:50:54,632 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-08-27 06:50:54,632 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-08-27 06:50:54,632 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-08-27 06:50:54,633 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-08-27 06:50:54,633 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-27 06:50:54,633 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-27 06:50:54,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-27 06:50:54,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-27 06:50:54,635 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-27 06:50:54,636 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-27 06:50:54,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-27 06:50:54,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 06:50:54,637 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 06:50:54,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-27 06:50:55,007 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-08-27 06:50:55,241 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 06:50:55,241 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-08-27 06:50:55,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 06:50:55 BoogieIcfgContainer [2021-08-27 06:50:55,243 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 06:50:55,244 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-27 06:50:55,244 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-27 06:50:55,246 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-27 06:50:55,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 06:50:54" (1/3) ... [2021-08-27 06:50:55,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4edbcef4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 06:50:55, skipping insertion in model container [2021-08-27 06:50:55,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:50:54" (2/3) ... [2021-08-27 06:50:55,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4edbcef4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 06:50:55, skipping insertion in model container [2021-08-27 06:50:55,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 06:50:55" (3/3) ... [2021-08-27 06:50:55,249 INFO L111 eAbstractionObserver]: Analyzing ICFG splice-2.i [2021-08-27 06:50:55,253 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-27 06:50:55,253 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2021-08-27 06:50:55,289 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-27 06:50:55,295 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 06:50:55,295 INFO L340 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2021-08-27 06:50:55,307 INFO L276 IsEmpty]: Start isEmpty. Operand has 84 states, 47 states have (on average 1.9574468085106382) internal successors, (92), 78 states have internal predecessors, (92), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-27 06:50:55,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-27 06:50:55,312 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:50:55,312 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:50:55,313 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr8REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-08-27 06:50:55,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:50:55,317 INFO L82 PathProgramCache]: Analyzing trace with hash 428760740, now seen corresponding path program 1 times [2021-08-27 06:50:55,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 06:50:55,322 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132271643] [2021-08-27 06:50:55,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:50:55,323 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 06:50:55,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:50:55,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 06:50:55,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:50:55,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:50:55,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 06:50:55,506 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132271643] [2021-08-27 06:50:55,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132271643] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 06:50:55,507 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:50:55,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 06:50:55,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072730486] [2021-08-27 06:50:55,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-27 06:50:55,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 06:50:55,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 06:50:55,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 06:50:55,533 INFO L87 Difference]: Start difference. First operand has 84 states, 47 states have (on average 1.9574468085106382) internal successors, (92), 78 states have internal predecessors, (92), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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 06:50:55,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:50:55,692 INFO L93 Difference]: Finished difference Result 84 states and 93 transitions. [2021-08-27 06:50:55,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 06:50:55,694 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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 10 [2021-08-27 06:50:55,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:50:55,698 INFO L225 Difference]: With dead ends: 84 [2021-08-27 06:50:55,699 INFO L226 Difference]: Without dead ends: 77 [2021-08-27 06:50:55,700 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 06:50:55,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-08-27 06:50:55,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2021-08-27 06:50:55,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 44 states have (on average 1.8409090909090908) internal successors, (81), 73 states have internal predecessors, (81), 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 06:50:55,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 84 transitions. [2021-08-27 06:50:55,730 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 84 transitions. Word has length 10 [2021-08-27 06:50:55,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:50:55,730 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 84 transitions. [2021-08-27 06:50:55,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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 06:50:55,730 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 84 transitions. [2021-08-27 06:50:55,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-27 06:50:55,731 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:50:55,731 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:50:55,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-27 06:50:55,731 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr8REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-08-27 06:50:55,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:50:55,732 INFO L82 PathProgramCache]: Analyzing trace with hash 406645412, now seen corresponding path program 1 times [2021-08-27 06:50:55,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 06:50:55,732 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868091958] [2021-08-27 06:50:55,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:50:55,733 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 06:50:55,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:50:55,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 06:50:55,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:50:55,816 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 06:50:55,816 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 06:50:55,816 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868091958] [2021-08-27 06:50:55,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868091958] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 06:50:55,817 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:50:55,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-27 06:50:55,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790920366] [2021-08-27 06:50:55,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 06:50:55,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 06:50:55,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 06:50:55,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 06:50:55,819 INFO L87 Difference]: Start difference. First operand 77 states and 84 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 06:50:55,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:50:55,977 INFO L93 Difference]: Finished difference Result 84 states and 92 transitions. [2021-08-27 06:50:55,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 06:50:55,977 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 11 [2021-08-27 06:50:55,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:50:55,980 INFO L225 Difference]: With dead ends: 84 [2021-08-27 06:50:55,980 INFO L226 Difference]: Without dead ends: 84 [2021-08-27 06:50:55,981 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.8ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-27 06:50:55,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-08-27 06:50:55,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 78. [2021-08-27 06:50:55,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 51 states have (on average 1.7254901960784315) internal successors, (88), 74 states have internal predecessors, (88), 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 06:50:55,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 91 transitions. [2021-08-27 06:50:55,994 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 91 transitions. Word has length 11 [2021-08-27 06:50:55,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:50:55,994 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 91 transitions. [2021-08-27 06:50:55,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 06:50:55,994 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 91 transitions. [2021-08-27 06:50:55,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-27 06:50:55,995 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:50:55,995 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:50:55,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-27 06:50:55,995 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr9REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-08-27 06:50:55,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:50:55,996 INFO L82 PathProgramCache]: Analyzing trace with hash 406645413, now seen corresponding path program 1 times [2021-08-27 06:50:55,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 06:50:55,996 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190958784] [2021-08-27 06:50:55,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:50:55,996 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 06:50:56,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:50:56,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 06:50:56,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:50:56,085 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 06:50:56,085 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 06:50:56,085 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190958784] [2021-08-27 06:50:56,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190958784] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 06:50:56,086 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:50:56,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-27 06:50:56,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383224184] [2021-08-27 06:50:56,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 06:50:56,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 06:50:56,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 06:50:56,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 06:50:56,087 INFO L87 Difference]: Start difference. First operand 78 states and 91 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 06:50:56,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:50:56,270 INFO L93 Difference]: Finished difference Result 92 states and 102 transitions. [2021-08-27 06:50:56,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 06:50:56,270 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 11 [2021-08-27 06:50:56,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:50:56,271 INFO L225 Difference]: With dead ends: 92 [2021-08-27 06:50:56,271 INFO L226 Difference]: Without dead ends: 92 [2021-08-27 06:50:56,271 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.3ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-27 06:50:56,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-08-27 06:50:56,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 85. [2021-08-27 06:50:56,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 59 states have (on average 1.5593220338983051) internal successors, (92), 81 states have internal predecessors, (92), 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 06:50:56,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 95 transitions. [2021-08-27 06:50:56,274 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 95 transitions. Word has length 11 [2021-08-27 06:50:56,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:50:56,274 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 95 transitions. [2021-08-27 06:50:56,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 06:50:56,275 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 95 transitions. [2021-08-27 06:50:56,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-27 06:50:56,275 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:50:56,275 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:50:56,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-27 06:50:56,275 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr29ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-08-27 06:50:56,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:50:56,276 INFO L82 PathProgramCache]: Analyzing trace with hash -1729229184, now seen corresponding path program 1 times [2021-08-27 06:50:56,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 06:50:56,276 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008681990] [2021-08-27 06:50:56,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:50:56,276 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 06:50:56,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 06:50:56,286 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 06:50:56,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 06:50:56,331 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 06:50:56,332 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-27 06:50:56,332 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr29ENSURES_VIOLATIONMEMORY_LEAK [2021-08-27 06:50:56,334 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-08-27 06:50:56,334 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-08-27 06:50:56,334 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-08-27 06:50:56,334 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-08-27 06:50:56,334 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-08-27 06:50:56,334 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-08-27 06:50:56,334 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-08-27 06:50:56,334 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-08-27 06:50:56,334 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION [2021-08-27 06:50:56,335 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION [2021-08-27 06:50:56,335 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION [2021-08-27 06:50:56,335 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION [2021-08-27 06:50:56,335 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12REQUIRES_VIOLATION [2021-08-27 06:50:56,335 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION [2021-08-27 06:50:56,335 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION [2021-08-27 06:50:56,335 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION [2021-08-27 06:50:56,335 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION [2021-08-27 06:50:56,335 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17REQUIRES_VIOLATION [2021-08-27 06:50:56,335 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr18REQUIRES_VIOLATION [2021-08-27 06:50:56,335 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr19REQUIRES_VIOLATION [2021-08-27 06:50:56,335 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr20REQUIRES_VIOLATION [2021-08-27 06:50:56,336 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr21REQUIRES_VIOLATION [2021-08-27 06:50:56,336 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr22REQUIRES_VIOLATION [2021-08-27 06:50:56,336 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr23REQUIRES_VIOLATION [2021-08-27 06:50:56,336 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr24REQUIRES_VIOLATION [2021-08-27 06:50:56,336 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr25REQUIRES_VIOLATION [2021-08-27 06:50:56,336 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr26REQUIRES_VIOLATION [2021-08-27 06:50:56,336 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr27REQUIRES_VIOLATION [2021-08-27 06:50:56,347 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr28ASSERT_VIOLATIONMEMORY_LEAK [2021-08-27 06:50:56,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-27 06:50:56,351 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-27 06:50:56,369 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2021-08-27 06:50:56,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 06:50:56 BoogieIcfgContainer [2021-08-27 06:50:56,380 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-27 06:50:56,381 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 06:50:56,381 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 06:50:56,381 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 06:50:56,381 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 06:50:55" (3/4) ... [2021-08-27 06:50:56,383 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-27 06:50:56,383 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 06:50:56,385 INFO L168 Benchmark]: Toolchain (without parser) took 2220.41 ms. Allocated memory was 60.8 MB in the beginning and 94.4 MB in the end (delta: 33.6 MB). Free memory was 38.2 MB in the beginning and 61.7 MB in the end (delta: -23.5 MB). Peak memory consumption was 10.1 MB. Max. memory is 16.1 GB. [2021-08-27 06:50:56,385 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 60.8 MB. Free memory was 41.8 MB in the beginning and 41.7 MB in the end (delta: 73.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 06:50:56,386 INFO L168 Benchmark]: CACSL2BoogieTranslator took 326.17 ms. Allocated memory is still 60.8 MB. Free memory was 38.0 MB in the beginning and 37.5 MB in the end (delta: 538.8 kB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-08-27 06:50:56,390 INFO L168 Benchmark]: Boogie Preprocessor took 36.03 ms. Allocated memory is still 60.8 MB. Free memory was 37.3 MB in the beginning and 34.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 06:50:56,390 INFO L168 Benchmark]: RCFGBuilder took 713.52 ms. Allocated memory was 60.8 MB in the beginning and 77.6 MB in the end (delta: 16.8 MB). Free memory was 34.6 MB in the beginning and 57.4 MB in the end (delta: -22.8 MB). Peak memory consumption was 22.2 MB. Max. memory is 16.1 GB. [2021-08-27 06:50:56,391 INFO L168 Benchmark]: TraceAbstraction took 1136.30 ms. Allocated memory was 77.6 MB in the beginning and 94.4 MB in the end (delta: 16.8 MB). Free memory was 56.9 MB in the beginning and 61.7 MB in the end (delta: -4.8 MB). Peak memory consumption was 11.6 MB. Max. memory is 16.1 GB. [2021-08-27 06:50:56,391 INFO L168 Benchmark]: Witness Printer took 2.64 ms. Allocated memory is still 94.4 MB. Free memory is still 61.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 06:50:56,398 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 60.8 MB. Free memory was 41.8 MB in the beginning and 41.7 MB in the end (delta: 73.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 326.17 ms. Allocated memory is still 60.8 MB. Free memory was 38.0 MB in the beginning and 37.5 MB in the end (delta: 538.8 kB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 36.03 ms. Allocated memory is still 60.8 MB. Free memory was 37.3 MB in the beginning and 34.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 713.52 ms. Allocated memory was 60.8 MB in the beginning and 77.6 MB in the end (delta: 16.8 MB). Free memory was 34.6 MB in the beginning and 57.4 MB in the end (delta: -22.8 MB). Peak memory consumption was 22.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1136.30 ms. Allocated memory was 77.6 MB in the beginning and 94.4 MB in the end (delta: 16.8 MB). Free memory was 56.9 MB in the beginning and 61.7 MB in the end (delta: -4.8 MB). Peak memory consumption was 11.6 MB. Max. memory is 16.1 GB. * Witness Printer took 2.64 ms. Allocated memory is still 94.4 MB. Free memory is still 61.7 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: 531]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 531. Possible FailurePath: [L532] int flag = 1; [L533] List a = (List) malloc(sizeof(struct node)); [L534] COND FALSE !(a == 0) VAL [a={-1:0}, flag=1] [L535] List t; [L536] List l1; [L537] List l2; [L538] List b; [L539] List u; [L540] List p = a; VAL [a={-1:0}, flag=1, p={-1:0}] [L541] COND FALSE !(__VERIFIER_nondet_int()) [L554] p->h = 3 VAL [a={-1:0}, flag=1, p={-1:0}] [L555] EXPR a->h VAL [a={-1:0}, a->h=3, flag=1, p={-1:0}] [L555] COND TRUE a->h == 3 [L555] return 0; VAL [\result=0, a={-1:0}, flag=1, p={-1:0}] - UnprovableResult [Line: 543]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 543]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 546]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 546]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 560]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 560]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 562]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 562]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 564]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 564]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 568]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 568]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 575]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 575]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 576]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 576]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 580]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 580]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 581]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 581]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 584]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 103 locations, 30 error locations. Started 1 CEGAR loops. OverallTime: 1062.1ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 8.6ms, AutomataDifference: 524.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 172 SDtfs, 230 SDslu, 59 SDs, 0 SdLazy, 386 SolverSat, 38 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 330.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 90.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=85occurred in iteration=3, 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: 36.1ms AutomataMinimizationTime, 3 MinimizatonAttempts, 13 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 11.9ms SsaConstructionTime, 61.0ms SatisfiabilityAnalysisTime, 229.4ms InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 29 ConstructedInterpolants, 0 QuantifiedInterpolants, 161 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 06:50:56,421 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 06:50:57,886 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 06:50:57,888 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 06:50:57,919 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 06:50:57,920 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 06:50:57,922 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 06:50:57,923 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 06:50:57,927 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 06:50:57,929 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 06:50:57,932 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 06:50:57,933 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 06:50:57,935 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 06:50:57,936 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 06:50:57,937 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 06:50:57,939 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 06:50:57,941 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 06:50:57,942 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 06:50:57,943 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 06:50:57,944 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 06:50:57,949 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 06:50:57,950 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 06:50:57,950 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 06:50:57,951 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 06:50:57,952 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 06:50:57,957 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 06:50:57,957 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 06:50:57,958 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 06:50:57,959 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 06:50:57,959 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 06:50:57,959 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 06:50:57,960 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 06:50:57,960 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 06:50:57,961 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 06:50:57,962 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 06:50:57,963 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 06:50:57,963 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 06:50:57,963 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 06:50:57,963 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 06:50:57,964 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 06:50:57,965 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 06:50:57,965 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 06:50:57,968 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-08-27 06:50:57,999 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 06:50:58,000 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 06:50:58,001 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 06:50:58,001 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 06:50:58,002 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 06:50:58,002 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 06:50:58,002 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 06:50:58,003 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 06:50:58,003 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 06:50:58,003 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 06:50:58,004 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 06:50:58,004 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 06:50:58,004 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 06:50:58,004 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-27 06:50:58,004 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-27 06:50:58,004 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-27 06:50:58,005 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 06:50:58,005 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-27 06:50:58,005 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-08-27 06:50:58,005 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-08-27 06:50:58,011 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 06:50:58,011 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 06:50:58,011 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 06:50:58,012 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 06:50:58,012 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 06:50:58,012 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 06:50:58,012 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 06:50:58,012 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 06:50:58,013 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-08-27 06:50:58,013 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-08-27 06:50:58,013 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 06:50:58,013 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-27 06:50:58,013 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cac090f4bce8d8ee66db31cac76f8c06713c6de9 [2021-08-27 06:50:58,276 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 06:50:58,290 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 06:50:58,292 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 06:50:58,293 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 06:50:58,293 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 06:50:58,294 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-properties/splice-2.i [2021-08-27 06:50:58,342 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b241cd37/526fec4a13e34ed78aef86e064c52131/FLAG8a59e80a0 [2021-08-27 06:50:58,702 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 06:50:58,704 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-properties/splice-2.i [2021-08-27 06:50:58,713 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b241cd37/526fec4a13e34ed78aef86e064c52131/FLAG8a59e80a0 [2021-08-27 06:50:59,079 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b241cd37/526fec4a13e34ed78aef86e064c52131 [2021-08-27 06:50:59,080 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 06:50:59,081 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-27 06:50:59,082 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 06:50:59,082 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 06:50:59,085 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 06:50:59,085 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 06:50:59" (1/1) ... [2021-08-27 06:50:59,089 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d4b8dae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:50:59, skipping insertion in model container [2021-08-27 06:50:59,089 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 06:50:59" (1/1) ... [2021-08-27 06:50:59,093 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 06:50:59,122 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 06:50:59,314 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-properties/splice-2.i[23721,23734] [2021-08-27 06:50:59,319 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 06:50:59,330 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 06:50:59,359 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-properties/splice-2.i[23721,23734] [2021-08-27 06:50:59,359 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 06:50:59,384 INFO L208 MainTranslator]: Completed translation [2021-08-27 06:50:59,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:50:59 WrapperNode [2021-08-27 06:50:59,385 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 06:50:59,385 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 06:50:59,386 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 06:50:59,386 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 06:50:59,393 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:50:59" (1/1) ... [2021-08-27 06:50:59,393 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:50:59" (1/1) ... [2021-08-27 06:50:59,403 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:50:59" (1/1) ... [2021-08-27 06:50:59,403 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:50:59" (1/1) ... [2021-08-27 06:50:59,418 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:50:59" (1/1) ... [2021-08-27 06:50:59,422 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:50:59" (1/1) ... [2021-08-27 06:50:59,424 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:50:59" (1/1) ... [2021-08-27 06:50:59,428 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 06:50:59,433 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 06:50:59,434 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 06:50:59,434 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 06:50:59,434 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:50:59" (1/1) ... [2021-08-27 06:50:59,440 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 06:50:59,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 06:50:59,452 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 06:50:59,462 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 06:50:59,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-27 06:50:59,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 06:50:59,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-08-27 06:50:59,492 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-08-27 06:50:59,492 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-08-27 06:50:59,492 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-08-27 06:50:59,493 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-08-27 06:50:59,493 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-08-27 06:50:59,494 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-08-27 06:50:59,494 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-08-27 06:50:59,494 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-27 06:50:59,494 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-27 06:50:59,494 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-08-27 06:50:59,494 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-08-27 06:50:59,494 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-08-27 06:50:59,494 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-08-27 06:50:59,495 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 06:50:59,495 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-08-27 06:50:59,495 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-08-27 06:50:59,495 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-08-27 06:50:59,495 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-08-27 06:50:59,495 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-08-27 06:50:59,495 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-08-27 06:50:59,495 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-08-27 06:50:59,495 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-08-27 06:50:59,496 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-08-27 06:50:59,496 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-08-27 06:50:59,496 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-08-27 06:50:59,496 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-08-27 06:50:59,496 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-08-27 06:50:59,496 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-08-27 06:50:59,496 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-08-27 06:50:59,496 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-08-27 06:50:59,496 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-08-27 06:50:59,497 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-08-27 06:50:59,497 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-08-27 06:50:59,497 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-08-27 06:50:59,497 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-08-27 06:50:59,497 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-08-27 06:50:59,497 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-08-27 06:50:59,497 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-08-27 06:50:59,497 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-08-27 06:50:59,497 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-08-27 06:50:59,498 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-08-27 06:50:59,498 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-08-27 06:50:59,498 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-08-27 06:50:59,498 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-08-27 06:50:59,498 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-08-27 06:50:59,498 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-08-27 06:50:59,498 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-08-27 06:50:59,498 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-08-27 06:50:59,499 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-08-27 06:50:59,499 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-08-27 06:50:59,499 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-08-27 06:50:59,499 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-08-27 06:50:59,499 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-08-27 06:50:59,499 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-08-27 06:50:59,499 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-08-27 06:50:59,499 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-08-27 06:50:59,499 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-08-27 06:50:59,500 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-08-27 06:50:59,500 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-08-27 06:50:59,500 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-08-27 06:50:59,500 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-08-27 06:50:59,500 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-08-27 06:50:59,500 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-08-27 06:50:59,500 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-08-27 06:50:59,500 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-08-27 06:50:59,500 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-08-27 06:50:59,501 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-08-27 06:50:59,501 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-08-27 06:50:59,501 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-08-27 06:50:59,501 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-08-27 06:50:59,501 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-08-27 06:50:59,501 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-08-27 06:50:59,501 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-08-27 06:50:59,501 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-08-27 06:50:59,502 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-08-27 06:50:59,507 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-08-27 06:50:59,507 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-08-27 06:50:59,508 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-08-27 06:50:59,508 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-08-27 06:50:59,508 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-08-27 06:50:59,508 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-08-27 06:50:59,508 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-08-27 06:50:59,508 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-08-27 06:50:59,508 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-08-27 06:50:59,508 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-08-27 06:50:59,509 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-08-27 06:50:59,509 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-08-27 06:50:59,509 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-08-27 06:50:59,509 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-08-27 06:50:59,509 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-08-27 06:50:59,509 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-08-27 06:50:59,509 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-08-27 06:50:59,509 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-08-27 06:50:59,509 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-08-27 06:50:59,509 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-08-27 06:50:59,510 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-08-27 06:50:59,510 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-08-27 06:50:59,510 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-08-27 06:50:59,510 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-08-27 06:50:59,510 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-08-27 06:50:59,510 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-08-27 06:50:59,510 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-08-27 06:50:59,511 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-08-27 06:50:59,511 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-08-27 06:50:59,511 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-08-27 06:50:59,511 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-08-27 06:50:59,511 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-08-27 06:50:59,511 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-08-27 06:50:59,511 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-08-27 06:50:59,511 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-08-27 06:50:59,511 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-08-27 06:50:59,512 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-08-27 06:50:59,512 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-08-27 06:50:59,512 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-08-27 06:50:59,512 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-08-27 06:50:59,512 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-08-27 06:50:59,512 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-08-27 06:50:59,512 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-08-27 06:50:59,513 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-08-27 06:50:59,513 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-08-27 06:50:59,513 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-08-27 06:50:59,514 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-08-27 06:50:59,515 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-27 06:50:59,515 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-27 06:50:59,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-08-27 06:50:59,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-27 06:50:59,516 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-27 06:50:59,517 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-08-27 06:50:59,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-27 06:50:59,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-08-27 06:50:59,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 06:50:59,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-08-27 06:50:59,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-08-27 06:50:59,524 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-08-27 06:50:59,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-27 06:50:59,817 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-08-27 06:51:00,077 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 06:51:00,078 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-08-27 06:51:00,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 06:51:00 BoogieIcfgContainer [2021-08-27 06:51:00,080 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 06:51:00,081 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-27 06:51:00,081 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-27 06:51:00,083 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-27 06:51:00,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 06:50:59" (1/3) ... [2021-08-27 06:51:00,084 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65a621e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 06:51:00, skipping insertion in model container [2021-08-27 06:51:00,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:50:59" (2/3) ... [2021-08-27 06:51:00,084 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65a621e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 06:51:00, skipping insertion in model container [2021-08-27 06:51:00,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 06:51:00" (3/3) ... [2021-08-27 06:51:00,087 INFO L111 eAbstractionObserver]: Analyzing ICFG splice-2.i [2021-08-27 06:51:00,090 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-27 06:51:00,090 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2021-08-27 06:51:00,133 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-27 06:51:00,140 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 06:51:00,140 INFO L340 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2021-08-27 06:51:00,154 INFO L276 IsEmpty]: Start isEmpty. Operand has 83 states, 46 states have (on average 1.9782608695652173) internal successors, (91), 77 states have internal predecessors, (91), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-27 06:51:00,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-27 06:51:00,171 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:51:00,171 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:51:00,172 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr8REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-08-27 06:51:00,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:51:00,177 INFO L82 PathProgramCache]: Analyzing trace with hash 1254687558, now seen corresponding path program 1 times [2021-08-27 06:51:00,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:51:00,187 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1471126925] [2021-08-27 06:51:00,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:51:00,187 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:51:00,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:51:00,189 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 06:51:00,200 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 06:51:00,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:51:00,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 3 conjunts are in the unsatisfiable core [2021-08-27 06:51:00,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:51:00,413 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-27 06:51:00,450 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 06:51:00,450 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:51:00,510 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 06:51:00,510 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:51:00,511 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1471126925] [2021-08-27 06:51:00,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1471126925] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 06:51:00,511 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:51:00,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-08-27 06:51:00,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464696323] [2021-08-27 06:51:00,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 06:51:00,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:51:00,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 06:51:00,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 06:51:00,531 INFO L87 Difference]: Start difference. First operand has 83 states, 46 states have (on average 1.9782608695652173) internal successors, (91), 77 states have internal predecessors, (91), 4 states have call successors, (4), 3 states have call predecessors, (4), 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 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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 06:51:00,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:51:00,766 INFO L93 Difference]: Finished difference Result 90 states and 101 transitions. [2021-08-27 06:51:00,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-27 06:51:00,768 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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 10 [2021-08-27 06:51:00,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:51:00,772 INFO L225 Difference]: With dead ends: 90 [2021-08-27 06:51:00,772 INFO L226 Difference]: Without dead ends: 82 [2021-08-27 06:51:00,773 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-27 06:51:00,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-08-27 06:51:00,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 76. [2021-08-27 06:51:00,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 49 states have (on average 1.7551020408163265) internal successors, (86), 72 states have internal predecessors, (86), 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 06:51:00,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 89 transitions. [2021-08-27 06:51:00,805 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 89 transitions. Word has length 10 [2021-08-27 06:51:00,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:51:00,806 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 89 transitions. [2021-08-27 06:51:00,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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 06:51:00,806 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 89 transitions. [2021-08-27 06:51:00,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-27 06:51:00,807 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:51:00,807 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:51:00,815 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-08-27 06:51:01,014 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 06:51:01,014 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr9REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-08-27 06:51:01,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:51:01,016 INFO L82 PathProgramCache]: Analyzing trace with hash 1254687559, now seen corresponding path program 1 times [2021-08-27 06:51:01,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:51:01,017 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1584010341] [2021-08-27 06:51:01,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:51:01,017 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:51:01,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:51:01,018 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 06:51:01,019 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 06:51:01,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:51:01,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-27 06:51:01,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:51:01,143 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-27 06:51:01,195 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 06:51:01,195 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:51:01,309 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 06:51:01,309 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:51:01,309 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1584010341] [2021-08-27 06:51:01,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1584010341] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 06:51:01,310 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:51:01,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-08-27 06:51:01,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571354780] [2021-08-27 06:51:01,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-27 06:51:01,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:51:01,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 06:51:01,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-27 06:51:01,311 INFO L87 Difference]: Start difference. First operand 76 states and 89 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 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 06:51:01,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:51:01,590 INFO L93 Difference]: Finished difference Result 92 states and 101 transitions. [2021-08-27 06:51:01,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 06:51:01,593 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 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 10 [2021-08-27 06:51:01,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:51:01,593 INFO L225 Difference]: With dead ends: 92 [2021-08-27 06:51:01,594 INFO L226 Difference]: Without dead ends: 92 [2021-08-27 06:51:01,594 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 76.0ms TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-27 06:51:01,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-08-27 06:51:01,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 83. [2021-08-27 06:51:01,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 57 states have (on average 1.5789473684210527) internal successors, (90), 79 states have internal predecessors, (90), 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 06:51:01,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 93 transitions. [2021-08-27 06:51:01,598 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 93 transitions. Word has length 10 [2021-08-27 06:51:01,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:51:01,598 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 93 transitions. [2021-08-27 06:51:01,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 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 06:51:01,599 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 93 transitions. [2021-08-27 06:51:01,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-08-27 06:51:01,599 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:51:01,599 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:51:01,607 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 06:51:01,802 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 06:51:01,803 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr29ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-08-27 06:51:01,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:51:01,803 INFO L82 PathProgramCache]: Analyzing trace with hash -703271917, now seen corresponding path program 1 times [2021-08-27 06:51:01,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:51:01,804 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [433457792] [2021-08-27 06:51:01,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:51:01,804 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:51:01,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:51:01,805 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 06:51:01,806 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 06:51:01,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 06:51:01,929 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 06:51:01,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 06:51:01,983 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-08-27 06:51:01,992 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-27 06:51:01,994 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr29ENSURES_VIOLATIONMEMORY_LEAK [2021-08-27 06:51:01,995 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-08-27 06:51:01,995 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-08-27 06:51:01,995 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-08-27 06:51:01,995 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-08-27 06:51:01,995 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-08-27 06:51:01,995 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-08-27 06:51:01,995 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-08-27 06:51:01,995 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-08-27 06:51:01,996 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION [2021-08-27 06:51:01,996 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION [2021-08-27 06:51:01,996 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION [2021-08-27 06:51:01,996 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION [2021-08-27 06:51:01,996 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12REQUIRES_VIOLATION [2021-08-27 06:51:01,996 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION [2021-08-27 06:51:01,996 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION [2021-08-27 06:51:01,996 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION [2021-08-27 06:51:01,996 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION [2021-08-27 06:51:01,996 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17REQUIRES_VIOLATION [2021-08-27 06:51:01,996 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr18REQUIRES_VIOLATION [2021-08-27 06:51:01,996 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr19REQUIRES_VIOLATION [2021-08-27 06:51:01,997 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr20REQUIRES_VIOLATION [2021-08-27 06:51:01,997 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr21REQUIRES_VIOLATION [2021-08-27 06:51:01,997 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr22REQUIRES_VIOLATION [2021-08-27 06:51:01,997 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr23REQUIRES_VIOLATION [2021-08-27 06:51:01,997 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr24REQUIRES_VIOLATION [2021-08-27 06:51:01,997 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr25REQUIRES_VIOLATION [2021-08-27 06:51:01,997 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr26REQUIRES_VIOLATION [2021-08-27 06:51:01,997 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr27REQUIRES_VIOLATION [2021-08-27 06:51:01,997 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr28ASSERT_VIOLATIONMEMORY_LEAK [2021-08-27 06:51:02,011 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 06:51:02,198 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 06:51:02,202 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-27 06:51:02,206 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2021-08-27 06:51:02,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 06:51:02 BoogieIcfgContainer [2021-08-27 06:51:02,218 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-27 06:51:02,218 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 06:51:02,218 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 06:51:02,218 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 06:51:02,218 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 06:51:00" (3/4) ... [2021-08-27 06:51:02,220 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-27 06:51:02,220 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 06:51:02,221 INFO L168 Benchmark]: Toolchain (without parser) took 3139.39 ms. Allocated memory was 73.4 MB in the beginning and 113.2 MB in the end (delta: 39.8 MB). Free memory was 56.8 MB in the beginning and 76.5 MB in the end (delta: -19.7 MB). Peak memory consumption was 18.6 MB. Max. memory is 16.1 GB. [2021-08-27 06:51:02,222 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 73.4 MB. Free memory is still 55.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 06:51:02,222 INFO L168 Benchmark]: CACSL2BoogieTranslator took 302.76 ms. Allocated memory is still 73.4 MB. Free memory was 56.8 MB in the beginning and 50.5 MB in the end (delta: 6.3 MB). Peak memory consumption was 13.9 MB. Max. memory is 16.1 GB. [2021-08-27 06:51:02,222 INFO L168 Benchmark]: Boogie Preprocessor took 47.36 ms. Allocated memory is still 73.4 MB. Free memory was 50.5 MB in the beginning and 47.6 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 06:51:02,223 INFO L168 Benchmark]: RCFGBuilder took 646.47 ms. Allocated memory was 73.4 MB in the beginning and 94.4 MB in the end (delta: 21.0 MB). Free memory was 47.3 MB in the beginning and 62.6 MB in the end (delta: -15.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 16.1 GB. [2021-08-27 06:51:02,223 INFO L168 Benchmark]: TraceAbstraction took 2136.41 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 62.1 MB in the beginning and 76.5 MB in the end (delta: -14.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 16.1 GB. [2021-08-27 06:51:02,223 INFO L168 Benchmark]: Witness Printer took 2.34 ms. Allocated memory is still 113.2 MB. Free memory is still 76.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 06:51:02,225 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 73.4 MB. Free memory is still 55.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 302.76 ms. Allocated memory is still 73.4 MB. Free memory was 56.8 MB in the beginning and 50.5 MB in the end (delta: 6.3 MB). Peak memory consumption was 13.9 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 47.36 ms. Allocated memory is still 73.4 MB. Free memory was 50.5 MB in the beginning and 47.6 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 646.47 ms. Allocated memory was 73.4 MB in the beginning and 94.4 MB in the end (delta: 21.0 MB). Free memory was 47.3 MB in the beginning and 62.6 MB in the end (delta: -15.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2136.41 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 62.1 MB in the beginning and 76.5 MB in the end (delta: -14.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 16.1 GB. * Witness Printer took 2.34 ms. Allocated memory is still 113.2 MB. Free memory is still 76.5 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: 531]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 531. Possible FailurePath: [L532] int flag = 1; [L533] List a = (List) malloc(sizeof(struct node)); [L534] COND FALSE !(a == 0) VAL [a={1:0}, flag=1] [L535] List t; [L536] List l1; [L537] List l2; [L538] List b; [L539] List u; [L540] List p = a; VAL [a={1:0}, flag=1, p={1:0}] [L541] COND FALSE !(__VERIFIER_nondet_int()) [L554] p->h = 3 VAL [a={1:0}, flag=1, p={1:0}] [L555] EXPR a->h VAL [a={1:0}, a->h=3, flag=1, p={1:0}] [L555] COND TRUE a->h == 3 [L555] return 0; VAL [\result=0, a={1:0}, flag=1, p={1:0}] - UnprovableResult [Line: 543]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 543]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 546]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 546]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 560]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 560]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 562]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 562]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 564]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 564]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 568]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 568]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 575]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 575]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 576]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 576]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 580]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 580]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 581]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 581]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 584]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 108 locations, 30 error locations. Started 1 CEGAR loops. OverallTime: 2069.3ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 21.5ms, AutomataDifference: 537.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 90 SDtfs, 265 SDslu, 60 SDs, 0 SdLazy, 161 SolverSat, 43 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 344.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 98.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=83occurred in iteration=0, InterpolantAutomatonStates: 9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 26.8ms AutomataMinimizationTime, 2 MinimizatonAttempts, 15 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 29.4ms SsaConstructionTime, 51.5ms SatisfiabilityAnalysisTime, 359.5ms InterpolantComputationTime, 33 NumberOfCodeBlocks, 33 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 188 SizeOfPredicates, 3 NumberOfNonLiveVariables, 124 ConjunctsInSsa, 8 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 06:51:02,251 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...