./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 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781d68fa-919a-41e8-8e52-0a024b1092ff/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781d68fa-919a-41e8-8e52-0a024b1092ff/bin/uautomizer-tBqnrhUYjU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781d68fa-919a-41e8-8e52-0a024b1092ff/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781d68fa-919a-41e8-8e52-0a024b1092ff/bin/uautomizer-tBqnrhUYjU/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/splice-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781d68fa-919a-41e8-8e52-0a024b1092ff/bin/uautomizer-tBqnrhUYjU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781d68fa-919a-41e8-8e52-0a024b1092ff/bin/uautomizer-tBqnrhUYjU --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 098fc4cb5d15cb305e8d98bf2e1c69b111d102681b51dec68ae720515d6f30bc --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 22:09:04,667 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 22:09:04,670 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 22:09:04,724 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 22:09:04,725 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 22:09:04,729 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 22:09:04,730 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 22:09:04,734 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 22:09:04,737 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 22:09:04,743 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 22:09:04,744 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 22:09:04,746 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 22:09:04,746 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 22:09:04,749 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 22:09:04,751 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 22:09:04,758 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 22:09:04,761 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 22:09:04,762 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 22:09:04,764 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 22:09:04,772 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 22:09:04,774 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 22:09:04,775 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 22:09:04,779 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 22:09:04,780 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 22:09:04,789 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 22:09:04,789 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 22:09:04,790 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 22:09:04,792 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 22:09:04,792 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 22:09:04,794 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 22:09:04,794 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 22:09:04,795 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 22:09:04,797 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 22:09:04,799 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 22:09:04,800 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 22:09:04,800 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 22:09:04,801 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 22:09:04,801 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 22:09:04,802 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 22:09:04,803 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 22:09:04,803 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 22:09:04,805 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781d68fa-919a-41e8-8e52-0a024b1092ff/bin/uautomizer-tBqnrhUYjU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-02 22:09:04,844 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 22:09:04,845 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 22:09:04,845 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 22:09:04,846 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 22:09:04,854 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 22:09:04,854 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 22:09:04,854 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 22:09:04,855 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 22:09:04,855 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-02 22:09:04,855 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-02 22:09:04,856 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 22:09:04,856 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-02 22:09:04,856 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 22:09:04,857 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-02 22:09:04,857 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-02 22:09:04,857 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-02 22:09:04,857 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 22:09:04,857 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-02 22:09:04,857 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-02 22:09:04,858 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 22:09:04,858 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 22:09:04,858 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 22:09:04,858 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 22:09:04,858 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:09:04,859 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 22:09:04,859 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 22:09:04,859 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 22:09:04,859 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 22:09:04,859 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 22:09:04,861 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781d68fa-919a-41e8-8e52-0a024b1092ff/bin/uautomizer-tBqnrhUYjU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781d68fa-919a-41e8-8e52-0a024b1092ff/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 098fc4cb5d15cb305e8d98bf2e1c69b111d102681b51dec68ae720515d6f30bc [2021-11-02 22:09:05,159 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 22:09:05,184 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 22:09:05,187 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 22:09:05,189 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 22:09:05,191 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 22:09:05,192 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781d68fa-919a-41e8-8e52-0a024b1092ff/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/list-properties/splice-2.i [2021-11-02 22:09:05,266 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781d68fa-919a-41e8-8e52-0a024b1092ff/bin/uautomizer-tBqnrhUYjU/data/1126b4194/28cc8ac8b19d44cc8ddbcca4bae862d0/FLAGb6e274c2c [2021-11-02 22:09:05,829 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 22:09:05,832 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781d68fa-919a-41e8-8e52-0a024b1092ff/sv-benchmarks/c/list-properties/splice-2.i [2021-11-02 22:09:05,854 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781d68fa-919a-41e8-8e52-0a024b1092ff/bin/uautomizer-tBqnrhUYjU/data/1126b4194/28cc8ac8b19d44cc8ddbcca4bae862d0/FLAGb6e274c2c [2021-11-02 22:09:06,163 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781d68fa-919a-41e8-8e52-0a024b1092ff/bin/uautomizer-tBqnrhUYjU/data/1126b4194/28cc8ac8b19d44cc8ddbcca4bae862d0 [2021-11-02 22:09:06,165 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 22:09:06,167 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-02 22:09:06,171 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 22:09:06,171 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 22:09:06,174 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 22:09:06,174 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:09:06" (1/1) ... [2021-11-02 22:09:06,176 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7712fabd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:09:06, skipping insertion in model container [2021-11-02 22:09:06,176 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:09:06" (1/1) ... [2021-11-02 22:09:06,184 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 22:09:06,249 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 22:09:06,609 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781d68fa-919a-41e8-8e52-0a024b1092ff/sv-benchmarks/c/list-properties/splice-2.i[23721,23734] [2021-11-02 22:09:06,614 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:09:06,628 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 22:09:06,683 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781d68fa-919a-41e8-8e52-0a024b1092ff/sv-benchmarks/c/list-properties/splice-2.i[23721,23734] [2021-11-02 22:09:06,684 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:09:06,710 INFO L208 MainTranslator]: Completed translation [2021-11-02 22:09:06,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:09:06 WrapperNode [2021-11-02 22:09:06,711 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 22:09:06,712 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 22:09:06,712 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 22:09:06,712 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 22:09:06,724 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:09:06" (1/1) ... [2021-11-02 22:09:06,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:09:06" (1/1) ... [2021-11-02 22:09:06,739 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:09:06" (1/1) ... [2021-11-02 22:09:06,739 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:09:06" (1/1) ... [2021-11-02 22:09:06,757 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:09:06" (1/1) ... [2021-11-02 22:09:06,763 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:09:06" (1/1) ... [2021-11-02 22:09:06,767 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:09:06" (1/1) ... [2021-11-02 22:09:06,774 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 22:09:06,775 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 22:09:06,776 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 22:09:06,776 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 22:09:06,777 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:09:06" (1/1) ... [2021-11-02 22:09:06,784 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:09:06,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781d68fa-919a-41e8-8e52-0a024b1092ff/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:09:06,808 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781d68fa-919a-41e8-8e52-0a024b1092ff/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 22:09:06,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781d68fa-919a-41e8-8e52-0a024b1092ff/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 22:09:06,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-02 22:09:06,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 22:09:06,858 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-11-02 22:09:06,858 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-11-02 22:09:06,858 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-11-02 22:09:06,858 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-11-02 22:09:06,858 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-11-02 22:09:06,859 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-11-02 22:09:06,859 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-11-02 22:09:06,859 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-02 22:09:06,859 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-02 22:09:06,859 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-11-02 22:09:06,859 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-11-02 22:09:06,859 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-11-02 22:09:06,859 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-11-02 22:09:06,860 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 22:09:06,860 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-11-02 22:09:06,860 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-02 22:09:06,860 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-02 22:09:06,860 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-02 22:09:06,860 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-02 22:09:06,860 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-02 22:09:06,860 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-02 22:09:06,861 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-02 22:09:06,861 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-02 22:09:06,861 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-02 22:09:06,861 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-02 22:09:06,861 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-02 22:09:06,861 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-02 22:09:06,861 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-02 22:09:06,861 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-02 22:09:06,862 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-02 22:09:06,862 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-02 22:09:06,862 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-11-02 22:09:06,862 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-11-02 22:09:06,862 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-11-02 22:09:06,862 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-11-02 22:09:06,862 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-11-02 22:09:06,863 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-02 22:09:06,863 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-02 22:09:06,863 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-02 22:09:06,863 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-02 22:09:06,863 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-02 22:09:06,863 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-02 22:09:06,863 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-02 22:09:06,863 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-02 22:09:06,864 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-02 22:09:06,864 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-02 22:09:06,864 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-02 22:09:06,864 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-02 22:09:06,864 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-02 22:09:06,864 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-02 22:09:06,864 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-02 22:09:06,864 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-02 22:09:06,864 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-02 22:09:06,865 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-02 22:09:06,865 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-02 22:09:06,865 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-02 22:09:06,865 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-02 22:09:06,865 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-02 22:09:06,865 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-02 22:09:06,865 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-02 22:09:06,865 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-02 22:09:06,866 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-02 22:09:06,866 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-02 22:09:06,866 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-02 22:09:06,866 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-02 22:09:06,866 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-02 22:09:06,866 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-02 22:09:06,866 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-02 22:09:06,866 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-02 22:09:06,867 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-02 22:09:06,867 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-02 22:09:06,867 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-02 22:09:06,867 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-02 22:09:06,867 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-02 22:09:06,867 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-02 22:09:06,867 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-02 22:09:06,867 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-02 22:09:06,867 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-02 22:09:06,868 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-02 22:09:06,868 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-02 22:09:06,868 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-02 22:09:06,868 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-02 22:09:06,868 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-02 22:09:06,868 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-02 22:09:06,868 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-02 22:09:06,868 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-02 22:09:06,868 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-02 22:09:06,869 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-02 22:09:06,869 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-02 22:09:06,869 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-02 22:09:06,869 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-02 22:09:06,869 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-02 22:09:06,869 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-02 22:09:06,869 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-02 22:09:06,869 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-02 22:09:06,869 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-02 22:09:06,870 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-02 22:09:06,870 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-02 22:09:06,870 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-02 22:09:06,870 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-02 22:09:06,870 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-02 22:09:06,870 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-02 22:09:06,870 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-02 22:09:06,870 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-02 22:09:06,871 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-02 22:09:06,871 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-02 22:09:06,871 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-02 22:09:06,871 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-02 22:09:06,871 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-02 22:09:06,871 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-02 22:09:06,872 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-02 22:09:06,872 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-02 22:09:06,873 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-02 22:09:06,873 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-02 22:09:06,873 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-02 22:09:06,873 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-02 22:09:06,873 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-02 22:09:06,873 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-02 22:09:06,873 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-02 22:09:06,873 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-02 22:09:06,874 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-02 22:09:06,874 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-11-02 22:09:06,874 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-02 22:09:06,874 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 22:09:06,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 22:09:06,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 22:09:06,879 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 22:09:06,880 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 22:09:06,880 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-02 22:09:06,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 22:09:06,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 22:09:06,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 22:09:07,227 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-11-02 22:09:07,476 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 22:09:07,482 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-02 22:09:07,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:09:07 BoogieIcfgContainer [2021-11-02 22:09:07,486 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 22:09:07,487 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 22:09:07,488 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 22:09:07,492 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 22:09:07,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 10:09:06" (1/3) ... [2021-11-02 22:09:07,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27c18869 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:09:07, skipping insertion in model container [2021-11-02 22:09:07,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:09:06" (2/3) ... [2021-11-02 22:09:07,494 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27c18869 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:09:07, skipping insertion in model container [2021-11-02 22:09:07,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:09:07" (3/3) ... [2021-11-02 22:09:07,496 INFO L111 eAbstractionObserver]: Analyzing ICFG splice-2.i [2021-11-02 22:09:07,501 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 22:09:07,502 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2021-11-02 22:09:07,566 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 22:09:07,573 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, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-02 22:09:07,573 INFO L340 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2021-11-02 22:09:07,591 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) [2021-11-02 22:09:07,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-02 22:09:07,599 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:09:07,600 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:09:07,600 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr8REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-11-02 22:09:07,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:09:07,617 INFO L85 PathProgramCache]: Analyzing trace with hash 428760740, now seen corresponding path program 1 times [2021-11-02 22:09:07,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:09:07,627 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879350364] [2021-11-02 22:09:07,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:09:07,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:09:07,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:09:07,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-02 22:09:07,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:09:07,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:09:07,831 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:09:07,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879350364] [2021-11-02 22:09:07,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879350364] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:09:07,832 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:09:07,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:09:07,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933576618] [2021-11-02 22:09:07,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:09:07,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:09:07,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:09:07,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:09:07,861 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) [2021-11-02 22:09:08,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:09:08,027 INFO L93 Difference]: Finished difference Result 84 states and 93 transitions. [2021-11-02 22:09:08,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:09:08,029 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 [2021-11-02 22:09:08,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:09:08,036 INFO L225 Difference]: With dead ends: 84 [2021-11-02 22:09:08,036 INFO L226 Difference]: Without dead ends: 77 [2021-11-02 22:09:08,038 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:09:08,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-11-02 22:09:08,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2021-11-02 22:09:08,073 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) [2021-11-02 22:09:08,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 84 transitions. [2021-11-02 22:09:08,076 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 84 transitions. Word has length 10 [2021-11-02 22:09:08,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:09:08,077 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 84 transitions. [2021-11-02 22:09:08,077 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) [2021-11-02 22:09:08,077 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 84 transitions. [2021-11-02 22:09:08,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-02 22:09:08,078 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:09:08,078 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:09:08,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 22:09:08,079 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr8REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-11-02 22:09:08,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:09:08,079 INFO L85 PathProgramCache]: Analyzing trace with hash 406645412, now seen corresponding path program 1 times [2021-11-02 22:09:08,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:09:08,080 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599159953] [2021-11-02 22:09:08,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:09:08,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:09:08,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:09:08,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-02 22:09:08,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:09:08,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:09:08,206 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:09:08,207 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599159953] [2021-11-02 22:09:08,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599159953] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:09:08,209 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:09:08,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 22:09:08,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063236239] [2021-11-02 22:09:08,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:09:08,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:09:08,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:09:08,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:09:08,216 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) [2021-11-02 22:09:08,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:09:08,437 INFO L93 Difference]: Finished difference Result 84 states and 92 transitions. [2021-11-02 22:09:08,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:09:08,438 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 [2021-11-02 22:09:08,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:09:08,443 INFO L225 Difference]: With dead ends: 84 [2021-11-02 22:09:08,443 INFO L226 Difference]: Without dead ends: 84 [2021-11-02 22:09:08,445 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-02 22:09:08,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-11-02 22:09:08,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 78. [2021-11-02 22:09:08,463 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) [2021-11-02 22:09:08,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 91 transitions. [2021-11-02 22:09:08,469 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 91 transitions. Word has length 11 [2021-11-02 22:09:08,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:09:08,470 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 91 transitions. [2021-11-02 22:09:08,470 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) [2021-11-02 22:09:08,470 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 91 transitions. [2021-11-02 22:09:08,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-02 22:09:08,471 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:09:08,471 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:09:08,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 22:09:08,472 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr9REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-11-02 22:09:08,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:09:08,472 INFO L85 PathProgramCache]: Analyzing trace with hash 406645413, now seen corresponding path program 1 times [2021-11-02 22:09:08,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:09:08,473 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718154565] [2021-11-02 22:09:08,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:09:08,473 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:09:08,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:09:08,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-02 22:09:08,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:09:08,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:09:08,643 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:09:08,647 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718154565] [2021-11-02 22:09:08,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718154565] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:09:08,648 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:09:08,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 22:09:08,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213652845] [2021-11-02 22:09:08,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:09:08,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:09:08,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:09:08,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:09:08,650 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) [2021-11-02 22:09:08,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:09:08,908 INFO L93 Difference]: Finished difference Result 92 states and 102 transitions. [2021-11-02 22:09:08,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:09:08,909 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 [2021-11-02 22:09:08,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:09:08,914 INFO L225 Difference]: With dead ends: 92 [2021-11-02 22:09:08,915 INFO L226 Difference]: Without dead ends: 92 [2021-11-02 22:09:08,915 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-02 22:09:08,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-11-02 22:09:08,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 85. [2021-11-02 22:09:08,925 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) [2021-11-02 22:09:08,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 95 transitions. [2021-11-02 22:09:08,927 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 95 transitions. Word has length 11 [2021-11-02 22:09:08,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:09:08,927 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 95 transitions. [2021-11-02 22:09:08,927 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) [2021-11-02 22:09:08,928 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 95 transitions. [2021-11-02 22:09:08,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-02 22:09:08,928 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:09:08,928 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:09:08,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 22:09:08,929 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr29ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-11-02 22:09:08,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:09:08,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1729229184, now seen corresponding path program 1 times [2021-11-02 22:09:08,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:09:08,930 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107557239] [2021-11-02 22:09:08,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:09:08,931 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:09:08,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:09:08,954 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-02 22:09:08,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:09:09,001 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-02 22:09:09,004 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-02 22:09:09,006 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr29ENSURES_VIOLATIONMEMORY_LEAK [2021-11-02 22:09:09,008 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-11-02 22:09:09,008 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-11-02 22:09:09,008 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-11-02 22:09:09,009 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-11-02 22:09:09,009 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-11-02 22:09:09,009 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-11-02 22:09:09,009 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-11-02 22:09:09,009 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-11-02 22:09:09,010 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION [2021-11-02 22:09:09,010 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION [2021-11-02 22:09:09,010 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION [2021-11-02 22:09:09,010 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION [2021-11-02 22:09:09,013 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12REQUIRES_VIOLATION [2021-11-02 22:09:09,013 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION [2021-11-02 22:09:09,014 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION [2021-11-02 22:09:09,014 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION [2021-11-02 22:09:09,014 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION [2021-11-02 22:09:09,014 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17REQUIRES_VIOLATION [2021-11-02 22:09:09,014 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr18REQUIRES_VIOLATION [2021-11-02 22:09:09,015 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr19REQUIRES_VIOLATION [2021-11-02 22:09:09,015 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr20REQUIRES_VIOLATION [2021-11-02 22:09:09,015 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr21REQUIRES_VIOLATION [2021-11-02 22:09:09,015 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr22REQUIRES_VIOLATION [2021-11-02 22:09:09,015 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr23REQUIRES_VIOLATION [2021-11-02 22:09:09,016 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr24REQUIRES_VIOLATION [2021-11-02 22:09:09,016 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr25REQUIRES_VIOLATION [2021-11-02 22:09:09,016 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr26REQUIRES_VIOLATION [2021-11-02 22:09:09,016 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr27REQUIRES_VIOLATION [2021-11-02 22:09:09,017 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr28ASSERT_VIOLATIONMEMORY_LEAK [2021-11-02 22:09:09,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 22:09:09,020 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2021-11-02 22:09:09,023 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-02 22:09:09,029 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2021-11-02 22:09:09,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 10:09:09 BoogieIcfgContainer [2021-11-02 22:09:09,041 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-02 22:09:09,041 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-02 22:09:09,041 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-02 22:09:09,041 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-02 22:09:09,042 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:09:07" (3/4) ... [2021-11-02 22:09:09,044 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-02 22:09:09,044 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-02 22:09:09,046 INFO L168 Benchmark]: Toolchain (without parser) took 2877.96 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 57.8 MB in the beginning and 75.1 MB in the end (delta: -17.3 MB). Peak memory consumption was 2.9 MB. Max. memory is 16.1 GB. [2021-11-02 22:09:09,046 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 100.7 MB. Free memory is still 75.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-02 22:09:09,047 INFO L168 Benchmark]: CACSL2BoogieTranslator took 540.46 ms. Allocated memory is still 100.7 MB. Free memory was 57.5 MB in the beginning and 66.3 MB in the end (delta: -8.7 MB). Peak memory consumption was 4.3 MB. Max. memory is 16.1 GB. [2021-11-02 22:09:09,047 INFO L168 Benchmark]: Boogie Preprocessor took 62.72 ms. Allocated memory is still 100.7 MB. Free memory was 66.3 MB in the beginning and 63.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-11-02 22:09:09,048 INFO L168 Benchmark]: RCFGBuilder took 710.25 ms. Allocated memory is still 100.7 MB. Free memory was 63.4 MB in the beginning and 40.0 MB in the end (delta: 23.4 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2021-11-02 22:09:09,049 INFO L168 Benchmark]: TraceAbstraction took 1553.19 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 39.5 MB in the beginning and 75.1 MB in the end (delta: -35.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-02 22:09:09,049 INFO L168 Benchmark]: Witness Printer took 3.23 ms. Allocated memory is still 121.6 MB. Free memory is still 75.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-02 22:09:09,052 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 100.7 MB. Free memory is still 75.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 540.46 ms. Allocated memory is still 100.7 MB. Free memory was 57.5 MB in the beginning and 66.3 MB in the end (delta: -8.7 MB). Peak memory consumption was 4.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 62.72 ms. Allocated memory is still 100.7 MB. Free memory was 66.3 MB in the beginning and 63.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 710.25 ms. Allocated memory is still 100.7 MB. Free memory was 63.4 MB in the beginning and 40.0 MB in the end (delta: 23.4 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1553.19 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 39.5 MB in the beginning and 75.1 MB in the end (delta: -35.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 3.23 ms. Allocated memory is still 121.6 MB. Free memory is still 75.1 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, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 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: 1.4s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 172 SDtfs, 230 SDslu, 59 SDs, 0 SdLazy, 386 SolverSat, 38 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s 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, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 13 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s 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 [2021-11-02 22:09:09,098 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781d68fa-919a-41e8-8e52-0a024b1092ff/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781d68fa-919a-41e8-8e52-0a024b1092ff/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781d68fa-919a-41e8-8e52-0a024b1092ff/bin/uautomizer-tBqnrhUYjU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781d68fa-919a-41e8-8e52-0a024b1092ff/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781d68fa-919a-41e8-8e52-0a024b1092ff/bin/uautomizer-tBqnrhUYjU/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/splice-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781d68fa-919a-41e8-8e52-0a024b1092ff/bin/uautomizer-tBqnrhUYjU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781d68fa-919a-41e8-8e52-0a024b1092ff/bin/uautomizer-tBqnrhUYjU --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 098fc4cb5d15cb305e8d98bf2e1c69b111d102681b51dec68ae720515d6f30bc --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 22:09:11,833 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 22:09:11,836 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 22:09:11,902 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 22:09:11,903 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 22:09:11,908 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 22:09:11,910 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 22:09:11,918 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 22:09:11,921 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 22:09:11,927 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 22:09:11,933 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 22:09:11,935 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 22:09:11,935 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 22:09:11,938 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 22:09:11,940 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 22:09:11,942 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 22:09:11,943 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 22:09:11,944 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 22:09:11,946 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 22:09:11,948 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 22:09:11,950 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 22:09:11,958 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 22:09:11,959 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 22:09:11,961 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 22:09:11,970 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 22:09:11,972 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 22:09:11,972 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 22:09:11,974 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 22:09:11,975 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 22:09:11,977 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 22:09:11,977 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 22:09:11,978 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 22:09:11,980 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 22:09:11,981 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 22:09:11,983 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 22:09:11,984 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 22:09:11,985 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 22:09:11,985 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 22:09:11,986 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 22:09:11,988 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 22:09:11,988 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 22:09:11,989 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781d68fa-919a-41e8-8e52-0a024b1092ff/bin/uautomizer-tBqnrhUYjU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-02 22:09:12,021 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 22:09:12,022 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 22:09:12,022 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 22:09:12,022 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 22:09:12,024 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 22:09:12,024 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 22:09:12,024 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 22:09:12,024 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 22:09:12,024 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-02 22:09:12,025 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-02 22:09:12,025 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 22:09:12,025 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-02 22:09:12,025 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 22:09:12,025 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-02 22:09:12,026 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-02 22:09:12,026 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-02 22:09:12,026 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 22:09:12,026 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-02 22:09:12,027 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-02 22:09:12,027 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-02 22:09:12,027 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-02 22:09:12,027 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 22:09:12,027 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 22:09:12,028 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 22:09:12,028 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 22:09:12,028 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:09:12,028 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 22:09:12,028 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 22:09:12,029 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-02 22:09:12,029 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-02 22:09:12,029 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 22:09:12,029 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-02 22:09:12,029 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781d68fa-919a-41e8-8e52-0a024b1092ff/bin/uautomizer-tBqnrhUYjU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781d68fa-919a-41e8-8e52-0a024b1092ff/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 098fc4cb5d15cb305e8d98bf2e1c69b111d102681b51dec68ae720515d6f30bc [2021-11-02 22:09:12,466 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 22:09:12,491 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 22:09:12,494 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 22:09:12,496 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 22:09:12,497 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 22:09:12,498 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781d68fa-919a-41e8-8e52-0a024b1092ff/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/list-properties/splice-2.i [2021-11-02 22:09:12,591 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781d68fa-919a-41e8-8e52-0a024b1092ff/bin/uautomizer-tBqnrhUYjU/data/363936333/5247f812b18a4badb4bebdec213cae94/FLAG0b83ddb48 [2021-11-02 22:09:13,408 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 22:09:13,412 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781d68fa-919a-41e8-8e52-0a024b1092ff/sv-benchmarks/c/list-properties/splice-2.i [2021-11-02 22:09:13,429 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781d68fa-919a-41e8-8e52-0a024b1092ff/bin/uautomizer-tBqnrhUYjU/data/363936333/5247f812b18a4badb4bebdec213cae94/FLAG0b83ddb48 [2021-11-02 22:09:13,635 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781d68fa-919a-41e8-8e52-0a024b1092ff/bin/uautomizer-tBqnrhUYjU/data/363936333/5247f812b18a4badb4bebdec213cae94 [2021-11-02 22:09:13,638 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 22:09:13,640 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-02 22:09:13,641 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 22:09:13,641 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 22:09:13,645 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 22:09:13,646 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:09:13" (1/1) ... [2021-11-02 22:09:13,648 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e57f7ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:09:13, skipping insertion in model container [2021-11-02 22:09:13,648 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:09:13" (1/1) ... [2021-11-02 22:09:13,657 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 22:09:13,720 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 22:09:14,098 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781d68fa-919a-41e8-8e52-0a024b1092ff/sv-benchmarks/c/list-properties/splice-2.i[23721,23734] [2021-11-02 22:09:14,102 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:09:14,128 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 22:09:14,186 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781d68fa-919a-41e8-8e52-0a024b1092ff/sv-benchmarks/c/list-properties/splice-2.i[23721,23734] [2021-11-02 22:09:14,187 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:09:14,225 INFO L208 MainTranslator]: Completed translation [2021-11-02 22:09:14,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:09:14 WrapperNode [2021-11-02 22:09:14,226 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 22:09:14,227 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 22:09:14,227 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 22:09:14,227 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 22:09:14,246 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:09:14" (1/1) ... [2021-11-02 22:09:14,247 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:09:14" (1/1) ... [2021-11-02 22:09:14,277 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:09:14" (1/1) ... [2021-11-02 22:09:14,278 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:09:14" (1/1) ... [2021-11-02 22:09:14,302 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:09:14" (1/1) ... [2021-11-02 22:09:14,308 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:09:14" (1/1) ... [2021-11-02 22:09:14,313 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:09:14" (1/1) ... [2021-11-02 22:09:14,321 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 22:09:14,322 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 22:09:14,322 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 22:09:14,322 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 22:09:14,323 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:09:14" (1/1) ... [2021-11-02 22:09:14,337 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:09:14,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781d68fa-919a-41e8-8e52-0a024b1092ff/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:09:14,370 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781d68fa-919a-41e8-8e52-0a024b1092ff/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 22:09:14,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781d68fa-919a-41e8-8e52-0a024b1092ff/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 22:09:14,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-02 22:09:14,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 22:09:14,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-11-02 22:09:14,416 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-11-02 22:09:14,416 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-11-02 22:09:14,416 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-11-02 22:09:14,417 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-11-02 22:09:14,417 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-11-02 22:09:14,417 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-11-02 22:09:14,417 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-11-02 22:09:14,417 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-02 22:09:14,417 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-02 22:09:14,417 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-11-02 22:09:14,418 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-11-02 22:09:14,418 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-11-02 22:09:14,418 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-11-02 22:09:14,418 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 22:09:14,418 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-11-02 22:09:14,418 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-02 22:09:14,419 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-02 22:09:14,419 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-02 22:09:14,419 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-02 22:09:14,419 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-02 22:09:14,419 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-02 22:09:14,419 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-02 22:09:14,419 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-02 22:09:14,419 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-02 22:09:14,420 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-02 22:09:14,420 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-02 22:09:14,420 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-02 22:09:14,420 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-02 22:09:14,420 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-02 22:09:14,420 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-02 22:09:14,420 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-02 22:09:14,421 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-11-02 22:09:14,421 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-11-02 22:09:14,421 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-11-02 22:09:14,421 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-11-02 22:09:14,421 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-11-02 22:09:14,421 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-02 22:09:14,421 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-02 22:09:14,421 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-02 22:09:14,422 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-02 22:09:14,422 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-02 22:09:14,422 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-02 22:09:14,422 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-02 22:09:14,422 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-02 22:09:14,422 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-02 22:09:14,422 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-02 22:09:14,423 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-02 22:09:14,423 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-02 22:09:14,423 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-02 22:09:14,423 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-02 22:09:14,423 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-02 22:09:14,423 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-02 22:09:14,423 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-02 22:09:14,424 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-02 22:09:14,424 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-02 22:09:14,424 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-02 22:09:14,424 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-02 22:09:14,424 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-02 22:09:14,424 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-02 22:09:14,424 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-02 22:09:14,425 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-02 22:09:14,425 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-02 22:09:14,425 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-02 22:09:14,425 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-02 22:09:14,425 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-02 22:09:14,425 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-02 22:09:14,425 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-02 22:09:14,426 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-02 22:09:14,426 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-02 22:09:14,426 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-02 22:09:14,426 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-02 22:09:14,426 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-02 22:09:14,426 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-02 22:09:14,426 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-02 22:09:14,427 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-02 22:09:14,427 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-02 22:09:14,427 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-02 22:09:14,427 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-02 22:09:14,427 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-02 22:09:14,427 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-02 22:09:14,427 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-02 22:09:14,427 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-02 22:09:14,428 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-02 22:09:14,428 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-02 22:09:14,428 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-02 22:09:14,428 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-02 22:09:14,428 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-02 22:09:14,428 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-02 22:09:14,428 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-02 22:09:14,429 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-02 22:09:14,429 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-02 22:09:14,429 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-02 22:09:14,429 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-02 22:09:14,429 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-02 22:09:14,429 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-02 22:09:14,429 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-02 22:09:14,430 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-02 22:09:14,430 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-02 22:09:14,430 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-02 22:09:14,442 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-02 22:09:14,442 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-02 22:09:14,442 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-02 22:09:14,442 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-02 22:09:14,442 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-02 22:09:14,442 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-02 22:09:14,442 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-02 22:09:14,443 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-02 22:09:14,443 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-02 22:09:14,443 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-02 22:09:14,443 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-02 22:09:14,443 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-02 22:09:14,443 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-02 22:09:14,443 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-02 22:09:14,443 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-02 22:09:14,444 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-02 22:09:14,444 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-02 22:09:14,444 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-02 22:09:14,444 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-02 22:09:14,444 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-02 22:09:14,444 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-02 22:09:14,444 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-02 22:09:14,445 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-11-02 22:09:14,445 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-02 22:09:14,445 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 22:09:14,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-02 22:09:14,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 22:09:14,445 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 22:09:14,446 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-02 22:09:14,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-02 22:09:14,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-02 22:09:14,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 22:09:14,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-11-02 22:09:14,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-02 22:09:14,447 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-02 22:09:14,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 22:09:14,758 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-11-02 22:09:15,223 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 22:09:15,224 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-02 22:09:15,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:09:15 BoogieIcfgContainer [2021-11-02 22:09:15,226 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 22:09:15,247 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 22:09:15,248 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 22:09:15,250 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 22:09:15,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 10:09:13" (1/3) ... [2021-11-02 22:09:15,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@331375ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:09:15, skipping insertion in model container [2021-11-02 22:09:15,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:09:14" (2/3) ... [2021-11-02 22:09:15,252 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@331375ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:09:15, skipping insertion in model container [2021-11-02 22:09:15,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:09:15" (3/3) ... [2021-11-02 22:09:15,254 INFO L111 eAbstractionObserver]: Analyzing ICFG splice-2.i [2021-11-02 22:09:15,259 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 22:09:15,260 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2021-11-02 22:09:15,306 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 22:09:15,312 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, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-02 22:09:15,313 INFO L340 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2021-11-02 22:09:15,329 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) [2021-11-02 22:09:15,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-02 22:09:15,337 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:09:15,338 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:09:15,338 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr8REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-11-02 22:09:15,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:09:15,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1254687558, now seen corresponding path program 1 times [2021-11-02 22:09:15,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:09:15,357 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [760564022] [2021-11-02 22:09:15,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:09:15,358 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:09:15,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781d68fa-919a-41e8-8e52-0a024b1092ff/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:09:15,361 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781d68fa-919a-41e8-8e52-0a024b1092ff/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:09:15,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781d68fa-919a-41e8-8e52-0a024b1092ff/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-02 22:09:15,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:09:15,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 22:09:15,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:09:15,634 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 [2021-11-02 22:09:15,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:09:15,675 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:09:15,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:09:15,728 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:09:15,728 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [760564022] [2021-11-02 22:09:15,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [760564022] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:09:15,729 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:09:15,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-02 22:09:15,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530336441] [2021-11-02 22:09:15,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:09:15,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:09:15,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:09:15,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:09:15,758 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) [2021-11-02 22:09:16,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:09:16,063 INFO L93 Difference]: Finished difference Result 90 states and 101 transitions. [2021-11-02 22:09:16,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:09:16,065 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 [2021-11-02 22:09:16,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:09:16,073 INFO L225 Difference]: With dead ends: 90 [2021-11-02 22:09:16,073 INFO L226 Difference]: Without dead ends: 82 [2021-11-02 22:09:16,074 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:09:16,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-11-02 22:09:16,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 76. [2021-11-02 22:09:16,111 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) [2021-11-02 22:09:16,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 89 transitions. [2021-11-02 22:09:16,114 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 89 transitions. Word has length 10 [2021-11-02 22:09:16,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:09:16,115 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 89 transitions. [2021-11-02 22:09:16,115 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) [2021-11-02 22:09:16,115 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 89 transitions. [2021-11-02 22:09:16,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-02 22:09:16,116 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:09:16,116 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:09:16,137 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781d68fa-919a-41e8-8e52-0a024b1092ff/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-02 22:09:16,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781d68fa-919a-41e8-8e52-0a024b1092ff/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:09:16,328 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr9REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-11-02 22:09:16,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:09:16,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1254687559, now seen corresponding path program 1 times [2021-11-02 22:09:16,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:09:16,330 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [697542084] [2021-11-02 22:09:16,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:09:16,330 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:09:16,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781d68fa-919a-41e8-8e52-0a024b1092ff/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:09:16,331 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781d68fa-919a-41e8-8e52-0a024b1092ff/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:09:16,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781d68fa-919a-41e8-8e52-0a024b1092ff/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-02 22:09:16,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:09:16,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-02 22:09:16,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:09:16,516 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 [2021-11-02 22:09:16,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:09:16,606 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:09:16,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:09:16,814 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:09:16,814 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [697542084] [2021-11-02 22:09:16,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [697542084] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:09:16,815 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:09:16,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-02 22:09:16,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649197049] [2021-11-02 22:09:16,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 22:09:16,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:09:16,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 22:09:16,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-02 22:09:16,819 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) [2021-11-02 22:09:17,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:09:17,267 INFO L93 Difference]: Finished difference Result 92 states and 101 transitions. [2021-11-02 22:09:17,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:09:17,271 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 [2021-11-02 22:09:17,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:09:17,273 INFO L225 Difference]: With dead ends: 92 [2021-11-02 22:09:17,273 INFO L226 Difference]: Without dead ends: 92 [2021-11-02 22:09:17,274 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-02 22:09:17,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-11-02 22:09:17,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 83. [2021-11-02 22:09:17,285 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) [2021-11-02 22:09:17,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 93 transitions. [2021-11-02 22:09:17,289 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 93 transitions. Word has length 10 [2021-11-02 22:09:17,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:09:17,289 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 93 transitions. [2021-11-02 22:09:17,290 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) [2021-11-02 22:09:17,294 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 93 transitions. [2021-11-02 22:09:17,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-02 22:09:17,295 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:09:17,295 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:09:17,313 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781d68fa-919a-41e8-8e52-0a024b1092ff/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-02 22:09:17,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781d68fa-919a-41e8-8e52-0a024b1092ff/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:09:17,513 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr29ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 25 more)] === [2021-11-02 22:09:17,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:09:17,514 INFO L85 PathProgramCache]: Analyzing trace with hash -703271917, now seen corresponding path program 1 times [2021-11-02 22:09:17,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:09:17,515 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1095079840] [2021-11-02 22:09:17,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:09:17,515 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:09:17,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781d68fa-919a-41e8-8e52-0a024b1092ff/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:09:17,516 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781d68fa-919a-41e8-8e52-0a024b1092ff/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:09:17,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781d68fa-919a-41e8-8e52-0a024b1092ff/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-02 22:09:17,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:09:17,661 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-02 22:09:17,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:09:17,753 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-11-02 22:09:17,754 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-02 22:09:17,755 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr29ENSURES_VIOLATIONMEMORY_LEAK [2021-11-02 22:09:17,757 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-11-02 22:09:17,757 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-11-02 22:09:17,757 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-11-02 22:09:17,758 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-11-02 22:09:17,758 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-11-02 22:09:17,758 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-11-02 22:09:17,758 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-11-02 22:09:17,758 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-11-02 22:09:17,759 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION [2021-11-02 22:09:17,759 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION [2021-11-02 22:09:17,759 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION [2021-11-02 22:09:17,759 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION [2021-11-02 22:09:17,759 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12REQUIRES_VIOLATION [2021-11-02 22:09:17,759 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION [2021-11-02 22:09:17,760 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION [2021-11-02 22:09:17,760 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION [2021-11-02 22:09:17,760 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION [2021-11-02 22:09:17,760 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17REQUIRES_VIOLATION [2021-11-02 22:09:17,760 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr18REQUIRES_VIOLATION [2021-11-02 22:09:17,761 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr19REQUIRES_VIOLATION [2021-11-02 22:09:17,761 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr20REQUIRES_VIOLATION [2021-11-02 22:09:17,761 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr21REQUIRES_VIOLATION [2021-11-02 22:09:17,761 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr22REQUIRES_VIOLATION [2021-11-02 22:09:17,761 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr23REQUIRES_VIOLATION [2021-11-02 22:09:17,761 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr24REQUIRES_VIOLATION [2021-11-02 22:09:17,762 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr25REQUIRES_VIOLATION [2021-11-02 22:09:17,762 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr26REQUIRES_VIOLATION [2021-11-02 22:09:17,762 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr27REQUIRES_VIOLATION [2021-11-02 22:09:17,762 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr28ASSERT_VIOLATIONMEMORY_LEAK [2021-11-02 22:09:17,794 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781d68fa-919a-41e8-8e52-0a024b1092ff/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-02 22:09:17,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781d68fa-919a-41e8-8e52-0a024b1092ff/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:09:17,974 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-11-02 22:09:17,976 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-02 22:09:17,983 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2021-11-02 22:09:17,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 10:09:17 BoogieIcfgContainer [2021-11-02 22:09:17,998 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-02 22:09:17,999 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-02 22:09:17,999 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-02 22:09:18,000 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-02 22:09:18,000 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:09:15" (3/4) ... [2021-11-02 22:09:18,007 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-02 22:09:18,007 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-02 22:09:18,008 INFO L168 Benchmark]: Toolchain (without parser) took 4367.80 ms. Allocated memory was 62.9 MB in the beginning and 77.6 MB in the end (delta: 14.7 MB). Free memory was 40.7 MB in the beginning and 50.3 MB in the end (delta: -9.6 MB). Peak memory consumption was 4.7 MB. Max. memory is 16.1 GB. [2021-11-02 22:09:18,008 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 62.9 MB. Free memory is still 43.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-02 22:09:18,009 INFO L168 Benchmark]: CACSL2BoogieTranslator took 585.21 ms. Allocated memory is still 62.9 MB. Free memory was 40.4 MB in the beginning and 37.5 MB in the end (delta: 2.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-02 22:09:18,010 INFO L168 Benchmark]: Boogie Preprocessor took 93.93 ms. Allocated memory is still 62.9 MB. Free memory was 37.5 MB in the beginning and 34.4 MB in the end (delta: 3.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-02 22:09:18,010 INFO L168 Benchmark]: RCFGBuilder took 904.35 ms. Allocated memory is still 62.9 MB. Free memory was 34.4 MB in the beginning and 25.1 MB in the end (delta: 9.2 MB). Peak memory consumption was 13.1 MB. Max. memory is 16.1 GB. [2021-11-02 22:09:18,011 INFO L168 Benchmark]: TraceAbstraction took 2750.98 ms. Allocated memory is still 77.6 MB. Free memory was 56.5 MB in the beginning and 50.7 MB in the end (delta: 5.7 MB). Peak memory consumption was 26.6 MB. Max. memory is 16.1 GB. [2021-11-02 22:09:18,011 INFO L168 Benchmark]: Witness Printer took 7.67 ms. Allocated memory is still 77.6 MB. Free memory was 50.7 MB in the beginning and 50.3 MB in the end (delta: 478.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-02 22:09:18,020 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 62.9 MB. Free memory is still 43.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 585.21 ms. Allocated memory is still 62.9 MB. Free memory was 40.4 MB in the beginning and 37.5 MB in the end (delta: 2.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 93.93 ms. Allocated memory is still 62.9 MB. Free memory was 37.5 MB in the beginning and 34.4 MB in the end (delta: 3.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 904.35 ms. Allocated memory is still 62.9 MB. Free memory was 34.4 MB in the beginning and 25.1 MB in the end (delta: 9.2 MB). Peak memory consumption was 13.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2750.98 ms. Allocated memory is still 77.6 MB. Free memory was 56.5 MB in the beginning and 50.7 MB in the end (delta: 5.7 MB). Peak memory consumption was 26.6 MB. Max. memory is 16.1 GB. * Witness Printer took 7.67 ms. Allocated memory is still 77.6 MB. Free memory was 50.7 MB in the beginning and 50.3 MB in the end (delta: 478.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 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: 2.6s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 90 SDtfs, 265 SDslu, 60 SDs, 0 SdLazy, 161 SolverSat, 43 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s 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, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 15 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s 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 [2021-11-02 22:09:18,077 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_781d68fa-919a-41e8-8e52-0a024b1092ff/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample