./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 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ec6938-e35c-4402-92b1-e607c6144c18/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ec6938-e35c-4402-92b1-e607c6144c18/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ec6938-e35c-4402-92b1-e607c6144c18/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ec6938-e35c-4402-92b1-e607c6144c18/bin/utaipan-eEHZpOm5b7/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/splice-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ec6938-e35c-4402-92b1-e607c6144c18/bin/utaipan-eEHZpOm5b7/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ec6938-e35c-4402-92b1-e607c6144c18/bin/utaipan-eEHZpOm5b7 --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 098fc4cb5d15cb305e8d98bf2e1c69b111d102681b51dec68ae720515d6f30bc --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 18:56:03,816 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 18:56:03,820 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 18:56:03,892 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 18:56:03,893 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 18:56:03,899 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 18:56:03,902 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 18:56:03,907 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 18:56:03,910 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 18:56:03,920 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 18:56:03,922 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 18:56:03,924 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 18:56:03,925 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 18:56:03,928 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 18:56:03,930 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 18:56:03,939 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 18:56:03,942 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 18:56:03,943 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 18:56:03,946 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 18:56:03,954 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 18:56:03,958 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 18:56:03,960 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 18:56:03,964 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 18:56:03,966 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 18:56:03,974 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 18:56:03,974 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 18:56:03,975 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 18:56:03,978 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 18:56:03,978 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 18:56:03,980 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 18:56:03,981 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 18:56:03,982 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 18:56:03,985 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 18:56:03,986 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 18:56:03,988 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 18:56:03,988 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 18:56:03,989 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 18:56:03,990 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 18:56:03,990 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 18:56:03,991 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 18:56:03,992 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 18:56:03,993 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ec6938-e35c-4402-92b1-e607c6144c18/bin/utaipan-eEHZpOm5b7/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-25 18:56:04,046 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 18:56:04,047 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 18:56:04,048 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 18:56:04,048 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 18:56:04,049 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 18:56:04,049 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 18:56:04,050 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 18:56:04,050 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 18:56:04,050 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 18:56:04,051 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 18:56:04,052 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 18:56:04,052 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 18:56:04,053 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 18:56:04,053 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 18:56:04,053 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 18:56:04,053 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 18:56:04,054 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 18:56:04,054 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 18:56:04,055 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-25 18:56:04,055 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-25 18:56:04,055 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 18:56:04,056 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 18:56:04,056 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-25 18:56:04,058 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 18:56:04,058 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 18:56:04,058 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 18:56:04,059 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-25 18:56:04,059 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-25 18:56:04,059 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-25 18:56:04,060 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 18:56:04,060 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-25 18:56:04,060 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 18:56:04,060 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 18:56:04,061 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 18:56:04,061 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 18:56:04,061 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:56:04,062 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 18:56:04,062 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 18:56:04,062 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 18:56:04,062 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 18:56:04,063 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 18:56:04,063 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 18:56:04,063 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_02ec6938-e35c-4402-92b1-e607c6144c18/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ec6938-e35c-4402-92b1-e607c6144c18/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 098fc4cb5d15cb305e8d98bf2e1c69b111d102681b51dec68ae720515d6f30bc [2021-11-25 18:56:04,445 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 18:56:04,473 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 18:56:04,476 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 18:56:04,478 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 18:56:04,479 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 18:56:04,480 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ec6938-e35c-4402-92b1-e607c6144c18/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/list-properties/splice-2.i [2021-11-25 18:56:04,570 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ec6938-e35c-4402-92b1-e607c6144c18/bin/utaipan-eEHZpOm5b7/data/702836282/25c6bd1ef47f43168e7cbe4259233602/FLAG718d493aa [2021-11-25 18:56:05,240 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 18:56:05,242 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ec6938-e35c-4402-92b1-e607c6144c18/sv-benchmarks/c/list-properties/splice-2.i [2021-11-25 18:56:05,271 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ec6938-e35c-4402-92b1-e607c6144c18/bin/utaipan-eEHZpOm5b7/data/702836282/25c6bd1ef47f43168e7cbe4259233602/FLAG718d493aa [2021-11-25 18:56:05,464 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ec6938-e35c-4402-92b1-e607c6144c18/bin/utaipan-eEHZpOm5b7/data/702836282/25c6bd1ef47f43168e7cbe4259233602 [2021-11-25 18:56:05,467 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 18:56:05,469 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 18:56:05,471 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 18:56:05,472 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 18:56:05,476 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 18:56:05,477 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:56:05" (1/1) ... [2021-11-25 18:56:05,480 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a2fac6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:56:05, skipping insertion in model container [2021-11-25 18:56:05,480 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:56:05" (1/1) ... [2021-11-25 18:56:05,488 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 18:56:05,556 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 18:56:05,979 WARN L230 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_02ec6938-e35c-4402-92b1-e607c6144c18/sv-benchmarks/c/list-properties/splice-2.i[23721,23734] [2021-11-25 18:56:05,983 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:56:05,992 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 18:56:06,035 WARN L230 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_02ec6938-e35c-4402-92b1-e607c6144c18/sv-benchmarks/c/list-properties/splice-2.i[23721,23734] [2021-11-25 18:56:06,036 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:56:06,070 INFO L208 MainTranslator]: Completed translation [2021-11-25 18:56:06,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:56:06 WrapperNode [2021-11-25 18:56:06,071 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 18:56:06,072 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 18:56:06,072 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 18:56:06,072 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 18:56:06,081 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:56:06" (1/1) ... [2021-11-25 18:56:06,099 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:56:06" (1/1) ... [2021-11-25 18:56:06,125 INFO L137 Inliner]: procedures = 124, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 104 [2021-11-25 18:56:06,125 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 18:56:06,126 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 18:56:06,126 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 18:56:06,127 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 18:56:06,136 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:56:06" (1/1) ... [2021-11-25 18:56:06,137 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:56:06" (1/1) ... [2021-11-25 18:56:06,141 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:56:06" (1/1) ... [2021-11-25 18:56:06,141 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:56:06" (1/1) ... [2021-11-25 18:56:06,149 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:56:06" (1/1) ... [2021-11-25 18:56:06,154 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:56:06" (1/1) ... [2021-11-25 18:56:06,156 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:56:06" (1/1) ... [2021-11-25 18:56:06,159 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 18:56:06,160 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 18:56:06,161 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 18:56:06,161 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 18:56:06,162 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:56:06" (1/1) ... [2021-11-25 18:56:06,170 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:56:06,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ec6938-e35c-4402-92b1-e607c6144c18/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:56:06,213 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ec6938-e35c-4402-92b1-e607c6144c18/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 18:56:06,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ec6938-e35c-4402-92b1-e607c6144c18/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 18:56:06,270 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-11-25 18:56:06,270 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-11-25 18:56:06,271 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 18:56:06,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 18:56:06,271 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 18:56:06,271 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 18:56:06,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 18:56:06,271 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 18:56:06,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 18:56:06,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 18:56:06,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 18:56:06,415 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 18:56:06,417 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 18:56:06,461 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-11-25 18:56:06,791 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 18:56:06,852 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 18:56:06,853 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-25 18:56:06,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:56:06 BoogieIcfgContainer [2021-11-25 18:56:06,857 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 18:56:06,858 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 18:56:06,859 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 18:56:06,864 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 18:56:06,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:56:05" (1/3) ... [2021-11-25 18:56:06,865 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5666f511 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:56:06, skipping insertion in model container [2021-11-25 18:56:06,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:56:06" (2/3) ... [2021-11-25 18:56:06,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5666f511 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:56:06, skipping insertion in model container [2021-11-25 18:56:06,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:56:06" (3/3) ... [2021-11-25 18:56:06,870 INFO L111 eAbstractionObserver]: Analyzing ICFG splice-2.i [2021-11-25 18:56:06,895 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 18:56:06,896 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2021-11-25 18:56:06,968 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 18:56:06,979 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 [2021-11-25 18:56:06,979 INFO L340 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2021-11-25 18:56:07,004 INFO L276 IsEmpty]: Start isEmpty. Operand has 67 states, 34 states have (on average 2.264705882352941) internal successors, (77), 65 states have internal predecessors, (77), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:56:07,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-25 18:56:07,028 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:56:07,029 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-25 18:56:07,029 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 26 more)] === [2021-11-25 18:56:07,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:56:07,044 INFO L85 PathProgramCache]: Analyzing trace with hash 184184172, now seen corresponding path program 1 times [2021-11-25 18:56:07,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:56:07,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659753494] [2021-11-25 18:56:07,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:56:07,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:56:07,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:56:07,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:56:07,218 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:56:07,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659753494] [2021-11-25 18:56:07,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659753494] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:56:07,220 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:56:07,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 18:56:07,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708905652] [2021-11-25 18:56:07,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:56:07,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-25 18:56:07,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:56:07,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-25 18:56:07,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 18:56:07,263 INFO L87 Difference]: Start difference. First operand has 67 states, 34 states have (on average 2.264705882352941) internal successors, (77), 65 states have internal predecessors, (77), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:56:07,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:56:07,325 INFO L93 Difference]: Finished difference Result 67 states and 76 transitions. [2021-11-25 18:56:07,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 18:56:07,328 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-25 18:56:07,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:56:07,336 INFO L225 Difference]: With dead ends: 67 [2021-11-25 18:56:07,336 INFO L226 Difference]: Without dead ends: 62 [2021-11-25 18:56:07,338 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 18:56:07,343 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:56:07,344 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 64 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:56:07,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-11-25 18:56:07,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2021-11-25 18:56:07,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 32 states have (on average 2.15625) internal successors, (69), 61 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:56:07,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 69 transitions. [2021-11-25 18:56:07,388 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 69 transitions. Word has length 5 [2021-11-25 18:56:07,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:56:07,388 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 69 transitions. [2021-11-25 18:56:07,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:56:07,389 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 69 transitions. [2021-11-25 18:56:07,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-25 18:56:07,389 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:56:07,390 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-25 18:56:07,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 18:56:07,390 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 26 more)] === [2021-11-25 18:56:07,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:56:07,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1414706383, now seen corresponding path program 1 times [2021-11-25 18:56:07,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:56:07,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764685815] [2021-11-25 18:56:07,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:56:07,393 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:56:07,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:56:07,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:56:07,451 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:56:07,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764685815] [2021-11-25 18:56:07,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764685815] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:56:07,452 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:56:07,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 18:56:07,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078378594] [2021-11-25 18:56:07,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:56:07,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 18:56:07,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:56:07,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 18:56:07,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:56:07,456 INFO L87 Difference]: Start difference. First operand 62 states and 69 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:56:07,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:56:07,601 INFO L93 Difference]: Finished difference Result 69 states and 77 transitions. [2021-11-25 18:56:07,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 18:56:07,602 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-25 18:56:07,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:56:07,605 INFO L225 Difference]: With dead ends: 69 [2021-11-25 18:56:07,605 INFO L226 Difference]: Without dead ends: 69 [2021-11-25 18:56:07,606 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:56:07,608 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 98 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:56:07,609 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 31 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:56:07,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-11-25 18:56:07,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 63. [2021-11-25 18:56:07,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 39 states have (on average 1.9487179487179487) internal successors, (76), 62 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:56:07,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 76 transitions. [2021-11-25 18:56:07,620 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 76 transitions. Word has length 6 [2021-11-25 18:56:07,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:56:07,621 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 76 transitions. [2021-11-25 18:56:07,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:56:07,622 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 76 transitions. [2021-11-25 18:56:07,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-25 18:56:07,622 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:56:07,622 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-25 18:56:07,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 18:56:07,623 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 26 more)] === [2021-11-25 18:56:07,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:56:07,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1414706384, now seen corresponding path program 1 times [2021-11-25 18:56:07,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:56:07,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254936822] [2021-11-25 18:56:07,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:56:07,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:56:07,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:56:07,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:56:07,699 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:56:07,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254936822] [2021-11-25 18:56:07,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254936822] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:56:07,700 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:56:07,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 18:56:07,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496493030] [2021-11-25 18:56:07,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:56:07,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 18:56:07,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:56:07,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 18:56:07,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:56:07,702 INFO L87 Difference]: Start difference. First operand 63 states and 76 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:56:07,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:56:07,848 INFO L93 Difference]: Finished difference Result 73 states and 83 transitions. [2021-11-25 18:56:07,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 18:56:07,849 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-25 18:56:07,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:56:07,850 INFO L225 Difference]: With dead ends: 73 [2021-11-25 18:56:07,851 INFO L226 Difference]: Without dead ends: 73 [2021-11-25 18:56:07,851 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:56:07,853 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 90 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:56:07,854 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 45 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:56:07,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-11-25 18:56:07,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 68. [2021-11-25 18:56:07,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 45 states have (on average 1.7333333333333334) internal successors, (78), 67 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:56:07,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 78 transitions. [2021-11-25 18:56:07,864 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 78 transitions. Word has length 6 [2021-11-25 18:56:07,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:56:07,864 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 78 transitions. [2021-11-25 18:56:07,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:56:07,865 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 78 transitions. [2021-11-25 18:56:07,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-25 18:56:07,865 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:56:07,866 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:56:07,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 18:56:07,866 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 26 more)] === [2021-11-25 18:56:07,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:56:07,872 INFO L85 PathProgramCache]: Analyzing trace with hash -996188662, now seen corresponding path program 1 times [2021-11-25 18:56:07,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:56:07,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549027832] [2021-11-25 18:56:07,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:56:07,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:56:07,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 18:56:07,917 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-25 18:56:07,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 18:56:07,991 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-25 18:56:07,992 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-25 18:56:07,995 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK (29 of 30 remaining) [2021-11-25 18:56:07,998 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION (28 of 30 remaining) [2021-11-25 18:56:08,000 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION (27 of 30 remaining) [2021-11-25 18:56:08,000 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION (26 of 30 remaining) [2021-11-25 18:56:08,001 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION (25 of 30 remaining) [2021-11-25 18:56:08,001 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION (24 of 30 remaining) [2021-11-25 18:56:08,001 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION (23 of 30 remaining) [2021-11-25 18:56:08,002 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION (22 of 30 remaining) [2021-11-25 18:56:08,002 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION (21 of 30 remaining) [2021-11-25 18:56:08,007 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION (20 of 30 remaining) [2021-11-25 18:56:08,008 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATION (19 of 30 remaining) [2021-11-25 18:56:08,009 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATION (18 of 30 remaining) [2021-11-25 18:56:08,009 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATION (17 of 30 remaining) [2021-11-25 18:56:08,009 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATION (16 of 30 remaining) [2021-11-25 18:56:08,010 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATION (15 of 30 remaining) [2021-11-25 18:56:08,010 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATION (14 of 30 remaining) [2021-11-25 18:56:08,010 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATION (13 of 30 remaining) [2021-11-25 18:56:08,011 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATION (12 of 30 remaining) [2021-11-25 18:56:08,011 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATION (11 of 30 remaining) [2021-11-25 18:56:08,011 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATION (10 of 30 remaining) [2021-11-25 18:56:08,012 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATION (9 of 30 remaining) [2021-11-25 18:56:08,012 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATION (8 of 30 remaining) [2021-11-25 18:56:08,012 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATION (7 of 30 remaining) [2021-11-25 18:56:08,013 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATION (6 of 30 remaining) [2021-11-25 18:56:08,013 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATION (5 of 30 remaining) [2021-11-25 18:56:08,013 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24REQUIRES_VIOLATION (4 of 30 remaining) [2021-11-25 18:56:08,017 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATION (3 of 30 remaining) [2021-11-25 18:56:08,018 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26REQUIRES_VIOLATION (2 of 30 remaining) [2021-11-25 18:56:08,020 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27REQUIRES_VIOLATION (1 of 30 remaining) [2021-11-25 18:56:08,020 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK (0 of 30 remaining) [2021-11-25 18:56:08,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 18:56:08,025 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2021-11-25 18:56:08,029 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-25 18:56:08,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 06:56:08 BoogieIcfgContainer [2021-11-25 18:56:08,069 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-25 18:56:08,070 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-25 18:56:08,070 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-25 18:56:08,070 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-25 18:56:08,071 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:56:06" (3/4) ... [2021-11-25 18:56:08,077 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-25 18:56:08,077 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-25 18:56:08,079 INFO L158 Benchmark]: Toolchain (without parser) took 2609.72ms. Allocated memory was 90.2MB in the beginning and 115.3MB in the end (delta: 25.2MB). Free memory was 55.0MB in the beginning and 44.0MB in the end (delta: 11.0MB). Peak memory consumption was 36.1MB. Max. memory is 16.1GB. [2021-11-25 18:56:08,079 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 90.2MB. Free memory was 62.5MB in the beginning and 62.5MB in the end (delta: 28.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 18:56:08,080 INFO L158 Benchmark]: CACSL2BoogieTranslator took 599.77ms. Allocated memory is still 90.2MB. Free memory was 54.8MB in the beginning and 59.1MB in the end (delta: -4.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-25 18:56:08,080 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.65ms. Allocated memory is still 90.2MB. Free memory was 59.1MB in the beginning and 57.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 18:56:08,081 INFO L158 Benchmark]: Boogie Preprocessor took 33.25ms. Allocated memory is still 90.2MB. Free memory was 57.0MB in the beginning and 55.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 18:56:08,081 INFO L158 Benchmark]: RCFGBuilder took 696.52ms. Allocated memory is still 90.2MB. Free memory was 55.6MB in the beginning and 38.1MB in the end (delta: 17.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-11-25 18:56:08,082 INFO L158 Benchmark]: TraceAbstraction took 1210.43ms. Allocated memory was 90.2MB in the beginning and 115.3MB in the end (delta: 25.2MB). Free memory was 37.4MB in the beginning and 44.0MB in the end (delta: -6.6MB). Peak memory consumption was 21.7MB. Max. memory is 16.1GB. [2021-11-25 18:56:08,082 INFO L158 Benchmark]: Witness Printer took 8.15ms. Allocated memory is still 115.3MB. Free memory is still 44.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 18:56:08,085 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 90.2MB. Free memory was 62.5MB in the beginning and 62.5MB in the end (delta: 28.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 599.77ms. Allocated memory is still 90.2MB. Free memory was 54.8MB in the beginning and 59.1MB in the end (delta: -4.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.65ms. Allocated memory is still 90.2MB. Free memory was 59.1MB in the beginning and 57.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.25ms. Allocated memory is still 90.2MB. Free memory was 57.0MB in the beginning and 55.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 696.52ms. Allocated memory is still 90.2MB. Free memory was 55.6MB in the beginning and 38.1MB in the end (delta: 17.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 1210.43ms. Allocated memory was 90.2MB in the beginning and 115.3MB in the end (delta: 25.2MB). Free memory was 37.4MB in the beginning and 44.0MB in the end (delta: -6.6MB). Peak memory consumption was 21.7MB. Max. memory is 16.1GB. * Witness Printer took 8.15ms. Allocated memory is still 115.3MB. Free memory is still 44.0MB. There was no memory consumed. Max. memory is 16.1GB. * 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 2 procedures, 68 locations, 30 error locations. Started 1 CEGAR loops. OverallTime: 1.1s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 188 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 188 mSDsluCounter, 140 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 27 mSDsCounter, 39 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 158 IncrementalHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 39 mSolverCounterUnsat, 113 mSDtfsCounter, 158 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=68occurred in iteration=3, InterpolantAutomatonStates: 10, 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, 11 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 74 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 [2021-11-25 18:56:08,163 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ec6938-e35c-4402-92b1-e607c6144c18/bin/utaipan-eEHZpOm5b7/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_02ec6938-e35c-4402-92b1-e607c6144c18/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ec6938-e35c-4402-92b1-e607c6144c18/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ec6938-e35c-4402-92b1-e607c6144c18/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ec6938-e35c-4402-92b1-e607c6144c18/bin/utaipan-eEHZpOm5b7/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/splice-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ec6938-e35c-4402-92b1-e607c6144c18/bin/utaipan-eEHZpOm5b7/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ec6938-e35c-4402-92b1-e607c6144c18/bin/utaipan-eEHZpOm5b7 --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 098fc4cb5d15cb305e8d98bf2e1c69b111d102681b51dec68ae720515d6f30bc --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 18:56:10,873 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 18:56:10,877 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 18:56:10,935 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 18:56:10,936 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 18:56:10,941 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 18:56:10,943 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 18:56:10,949 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 18:56:10,952 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 18:56:10,961 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 18:56:10,963 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 18:56:10,965 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 18:56:10,965 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 18:56:10,968 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 18:56:10,970 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 18:56:10,975 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 18:56:10,977 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 18:56:10,978 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 18:56:10,980 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 18:56:10,989 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 18:56:10,992 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 18:56:10,993 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 18:56:10,996 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 18:56:10,999 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 18:56:11,013 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 18:56:11,013 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 18:56:11,014 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 18:56:11,016 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 18:56:11,016 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 18:56:11,017 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 18:56:11,018 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 18:56:11,019 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 18:56:11,021 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 18:56:11,022 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 18:56:11,023 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 18:56:11,023 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 18:56:11,024 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 18:56:11,025 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 18:56:11,025 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 18:56:11,027 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 18:56:11,028 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 18:56:11,028 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ec6938-e35c-4402-92b1-e607c6144c18/bin/utaipan-eEHZpOm5b7/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-25 18:56:11,081 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 18:56:11,082 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 18:56:11,083 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 18:56:11,083 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 18:56:11,084 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 18:56:11,084 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 18:56:11,085 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 18:56:11,085 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 18:56:11,085 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 18:56:11,085 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 18:56:11,087 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 18:56:11,087 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 18:56:11,089 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-25 18:56:11,089 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-25 18:56:11,089 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 18:56:11,089 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 18:56:11,090 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-25 18:56:11,090 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 18:56:11,090 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 18:56:11,090 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 18:56:11,091 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-25 18:56:11,091 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-25 18:56:11,091 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-25 18:56:11,091 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 18:56:11,091 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-25 18:56:11,092 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-25 18:56:11,092 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-25 18:56:11,092 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 18:56:11,092 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 18:56:11,093 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 18:56:11,093 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-25 18:56:11,094 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 18:56:11,094 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:56:11,094 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 18:56:11,095 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 18:56:11,095 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-25 18:56:11,095 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-25 18:56:11,095 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 18:56:11,096 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 18:56:11,096 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_02ec6938-e35c-4402-92b1-e607c6144c18/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ec6938-e35c-4402-92b1-e607c6144c18/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 098fc4cb5d15cb305e8d98bf2e1c69b111d102681b51dec68ae720515d6f30bc [2021-11-25 18:56:11,607 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 18:56:11,635 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 18:56:11,639 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 18:56:11,640 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 18:56:11,641 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 18:56:11,644 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ec6938-e35c-4402-92b1-e607c6144c18/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/list-properties/splice-2.i [2021-11-25 18:56:11,731 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ec6938-e35c-4402-92b1-e607c6144c18/bin/utaipan-eEHZpOm5b7/data/55726c61d/3cf5289811a7493aadebaa41a9439904/FLAG0cf1af761 [2021-11-25 18:56:12,410 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 18:56:12,410 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ec6938-e35c-4402-92b1-e607c6144c18/sv-benchmarks/c/list-properties/splice-2.i [2021-11-25 18:56:12,438 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ec6938-e35c-4402-92b1-e607c6144c18/bin/utaipan-eEHZpOm5b7/data/55726c61d/3cf5289811a7493aadebaa41a9439904/FLAG0cf1af761 [2021-11-25 18:56:12,738 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ec6938-e35c-4402-92b1-e607c6144c18/bin/utaipan-eEHZpOm5b7/data/55726c61d/3cf5289811a7493aadebaa41a9439904 [2021-11-25 18:56:12,741 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 18:56:12,742 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 18:56:12,759 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 18:56:12,759 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 18:56:12,763 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 18:56:12,764 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:56:12" (1/1) ... [2021-11-25 18:56:12,766 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cc3ec72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:56:12, skipping insertion in model container [2021-11-25 18:56:12,766 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:56:12" (1/1) ... [2021-11-25 18:56:12,775 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 18:56:12,848 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 18:56:13,296 WARN L230 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_02ec6938-e35c-4402-92b1-e607c6144c18/sv-benchmarks/c/list-properties/splice-2.i[23721,23734] [2021-11-25 18:56:13,301 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:56:13,328 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 18:56:13,421 WARN L230 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_02ec6938-e35c-4402-92b1-e607c6144c18/sv-benchmarks/c/list-properties/splice-2.i[23721,23734] [2021-11-25 18:56:13,427 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:56:13,476 INFO L208 MainTranslator]: Completed translation [2021-11-25 18:56:13,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:56:13 WrapperNode [2021-11-25 18:56:13,477 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 18:56:13,478 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 18:56:13,478 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 18:56:13,479 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 18:56:13,492 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:56:13" (1/1) ... [2021-11-25 18:56:13,546 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:56:13" (1/1) ... [2021-11-25 18:56:13,590 INFO L137 Inliner]: procedures = 127, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 104 [2021-11-25 18:56:13,590 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 18:56:13,592 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 18:56:13,593 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 18:56:13,593 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 18:56:13,603 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:56:13" (1/1) ... [2021-11-25 18:56:13,604 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:56:13" (1/1) ... [2021-11-25 18:56:13,615 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:56:13" (1/1) ... [2021-11-25 18:56:13,615 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:56:13" (1/1) ... [2021-11-25 18:56:13,639 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:56:13" (1/1) ... [2021-11-25 18:56:13,644 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:56:13" (1/1) ... [2021-11-25 18:56:13,653 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:56:13" (1/1) ... [2021-11-25 18:56:13,662 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 18:56:13,663 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 18:56:13,664 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 18:56:13,664 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 18:56:13,665 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:56:13" (1/1) ... [2021-11-25 18:56:13,681 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:56:13,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ec6938-e35c-4402-92b1-e607c6144c18/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:56:13,710 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ec6938-e35c-4402-92b1-e607c6144c18/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 18:56:13,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ec6938-e35c-4402-92b1-e607c6144c18/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 18:56:13,775 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-11-25 18:56:13,778 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-11-25 18:56:13,778 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-25 18:56:13,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 18:56:13,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 18:56:13,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 18:56:13,779 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 18:56:13,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-25 18:56:13,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-25 18:56:13,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 18:56:13,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 18:56:13,962 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 18:56:13,964 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 18:56:14,004 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-11-25 18:56:14,571 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 18:56:14,579 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 18:56:14,579 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-25 18:56:14,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:56:14 BoogieIcfgContainer [2021-11-25 18:56:14,582 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 18:56:14,590 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 18:56:14,590 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 18:56:14,594 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 18:56:14,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:56:12" (1/3) ... [2021-11-25 18:56:14,595 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f88bd66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:56:14, skipping insertion in model container [2021-11-25 18:56:14,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:56:13" (2/3) ... [2021-11-25 18:56:14,596 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f88bd66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:56:14, skipping insertion in model container [2021-11-25 18:56:14,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:56:14" (3/3) ... [2021-11-25 18:56:14,598 INFO L111 eAbstractionObserver]: Analyzing ICFG splice-2.i [2021-11-25 18:56:14,605 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 18:56:14,605 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2021-11-25 18:56:14,678 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 18:56:14,691 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 [2021-11-25 18:56:14,691 INFO L340 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2021-11-25 18:56:14,727 INFO L276 IsEmpty]: Start isEmpty. Operand has 78 states, 45 states have (on average 2.0) internal successors, (90), 76 states have internal predecessors, (90), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:56:14,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-25 18:56:14,738 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:56:14,739 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-25 18:56:14,740 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 26 more)] === [2021-11-25 18:56:14,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:56:14,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1037516521, now seen corresponding path program 1 times [2021-11-25 18:56:14,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:56:14,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [530499798] [2021-11-25 18:56:14,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:56:14,763 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:56:14,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ec6938-e35c-4402-92b1-e607c6144c18/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:56:14,768 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ec6938-e35c-4402-92b1-e607c6144c18/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:56:14,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ec6938-e35c-4402-92b1-e607c6144c18/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-25 18:56:14,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:56:14,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 18:56:14,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:56:15,034 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 [2021-11-25 18:56:15,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:56:15,073 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:56:15,074 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:56:15,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [530499798] [2021-11-25 18:56:15,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [530499798] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:56:15,076 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:56:15,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:56:15,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532294700] [2021-11-25 18:56:15,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:56:15,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 18:56:15,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:56:15,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 18:56:15,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:56:15,122 INFO L87 Difference]: Start difference. First operand has 78 states, 45 states have (on average 2.0) internal successors, (90), 76 states have internal predecessors, (90), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:56:15,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:56:15,530 INFO L93 Difference]: Finished difference Result 86 states and 96 transitions. [2021-11-25 18:56:15,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 18:56:15,533 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-25 18:56:15,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:56:15,542 INFO L225 Difference]: With dead ends: 86 [2021-11-25 18:56:15,543 INFO L226 Difference]: Without dead ends: 78 [2021-11-25 18:56:15,544 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:56:15,549 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 125 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:56:15,550 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 57 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 18:56:15,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-11-25 18:56:15,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 72. [2021-11-25 18:56:15,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 48 states have (on average 1.7708333333333333) internal successors, (85), 71 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:56:15,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 85 transitions. [2021-11-25 18:56:15,611 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 85 transitions. Word has length 6 [2021-11-25 18:56:15,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:56:15,612 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 85 transitions. [2021-11-25 18:56:15,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:56:15,612 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 85 transitions. [2021-11-25 18:56:15,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-25 18:56:15,613 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:56:15,613 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-25 18:56:15,640 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ec6938-e35c-4402-92b1-e607c6144c18/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-25 18:56:15,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ec6938-e35c-4402-92b1-e607c6144c18/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 18:56:15,841 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 26 more)] === [2021-11-25 18:56:15,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:56:15,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1037516522, now seen corresponding path program 1 times [2021-11-25 18:56:15,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:56:15,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [834125276] [2021-11-25 18:56:15,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:56:15,843 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:56:15,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ec6938-e35c-4402-92b1-e607c6144c18/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:56:15,845 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ec6938-e35c-4402-92b1-e607c6144c18/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:56:15,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ec6938-e35c-4402-92b1-e607c6144c18/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-25 18:56:15,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:56:15,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 18:56:15,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:56:15,983 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 [2021-11-25 18:56:16,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:56:16,100 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:56:16,100 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:56:16,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [834125276] [2021-11-25 18:56:16,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [834125276] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:56:16,101 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:56:16,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:56:16,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781539023] [2021-11-25 18:56:16,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:56:16,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 18:56:16,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:56:16,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 18:56:16,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:56:16,107 INFO L87 Difference]: Start difference. First operand 72 states and 85 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:56:16,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:56:16,551 INFO L93 Difference]: Finished difference Result 86 states and 96 transitions. [2021-11-25 18:56:16,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 18:56:16,552 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-25 18:56:16,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:56:16,554 INFO L225 Difference]: With dead ends: 86 [2021-11-25 18:56:16,554 INFO L226 Difference]: Without dead ends: 86 [2021-11-25 18:56:16,555 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:56:16,557 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 108 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:56:16,558 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 62 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 18:56:16,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-11-25 18:56:16,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 79. [2021-11-25 18:56:16,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 56 states have (on average 1.5892857142857142) internal successors, (89), 78 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:56:16,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 89 transitions. [2021-11-25 18:56:16,571 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 89 transitions. Word has length 6 [2021-11-25 18:56:16,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:56:16,572 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 89 transitions. [2021-11-25 18:56:16,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:56:16,573 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 89 transitions. [2021-11-25 18:56:16,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-25 18:56:16,574 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:56:16,574 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:56:16,592 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ec6938-e35c-4402-92b1-e607c6144c18/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-25 18:56:16,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ec6938-e35c-4402-92b1-e607c6144c18/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 18:56:16,788 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 26 more)] === [2021-11-25 18:56:16,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:56:16,789 INFO L85 PathProgramCache]: Analyzing trace with hash 2070045135, now seen corresponding path program 1 times [2021-11-25 18:56:16,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:56:16,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [258514055] [2021-11-25 18:56:16,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:56:16,790 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:56:16,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ec6938-e35c-4402-92b1-e607c6144c18/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:56:16,792 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ec6938-e35c-4402-92b1-e607c6144c18/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:56:16,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ec6938-e35c-4402-92b1-e607c6144c18/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-25 18:56:16,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 18:56:16,886 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-25 18:56:16,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 18:56:16,965 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-11-25 18:56:16,965 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-25 18:56:16,967 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK (29 of 30 remaining) [2021-11-25 18:56:16,969 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION (28 of 30 remaining) [2021-11-25 18:56:16,970 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION (27 of 30 remaining) [2021-11-25 18:56:16,970 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION (26 of 30 remaining) [2021-11-25 18:56:16,970 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION (25 of 30 remaining) [2021-11-25 18:56:16,971 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION (24 of 30 remaining) [2021-11-25 18:56:16,971 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION (23 of 30 remaining) [2021-11-25 18:56:16,971 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION (22 of 30 remaining) [2021-11-25 18:56:16,986 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION (21 of 30 remaining) [2021-11-25 18:56:16,986 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION (20 of 30 remaining) [2021-11-25 18:56:16,987 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATION (19 of 30 remaining) [2021-11-25 18:56:16,987 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATION (18 of 30 remaining) [2021-11-25 18:56:16,987 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATION (17 of 30 remaining) [2021-11-25 18:56:16,988 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATION (16 of 30 remaining) [2021-11-25 18:56:16,988 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATION (15 of 30 remaining) [2021-11-25 18:56:16,988 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATION (14 of 30 remaining) [2021-11-25 18:56:16,989 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATION (13 of 30 remaining) [2021-11-25 18:56:16,989 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATION (12 of 30 remaining) [2021-11-25 18:56:16,989 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATION (11 of 30 remaining) [2021-11-25 18:56:16,990 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATION (10 of 30 remaining) [2021-11-25 18:56:16,990 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATION (9 of 30 remaining) [2021-11-25 18:56:16,990 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATION (8 of 30 remaining) [2021-11-25 18:56:16,991 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATION (7 of 30 remaining) [2021-11-25 18:56:16,991 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATION (6 of 30 remaining) [2021-11-25 18:56:16,991 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATION (5 of 30 remaining) [2021-11-25 18:56:16,992 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24REQUIRES_VIOLATION (4 of 30 remaining) [2021-11-25 18:56:16,992 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATION (3 of 30 remaining) [2021-11-25 18:56:16,992 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26REQUIRES_VIOLATION (2 of 30 remaining) [2021-11-25 18:56:16,993 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27REQUIRES_VIOLATION (1 of 30 remaining) [2021-11-25 18:56:16,993 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK (0 of 30 remaining) [2021-11-25 18:56:17,016 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ec6938-e35c-4402-92b1-e607c6144c18/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-25 18:56:17,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ec6938-e35c-4402-92b1-e607c6144c18/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 18:56:17,211 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-11-25 18:56:17,215 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-25 18:56:17,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 06:56:17 BoogieIcfgContainer [2021-11-25 18:56:17,243 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-25 18:56:17,244 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-25 18:56:17,244 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-25 18:56:17,244 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-25 18:56:17,245 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:56:14" (3/4) ... [2021-11-25 18:56:17,248 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-25 18:56:17,249 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-25 18:56:17,250 INFO L158 Benchmark]: Toolchain (without parser) took 4507.08ms. Allocated memory was 54.5MB in the beginning and 71.3MB in the end (delta: 16.8MB). Free memory was 31.1MB in the beginning and 47.5MB in the end (delta: -16.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 18:56:17,250 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 54.5MB. Free memory was 35.8MB in the beginning and 35.8MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 18:56:17,251 INFO L158 Benchmark]: CACSL2BoogieTranslator took 718.16ms. Allocated memory was 54.5MB in the beginning and 71.3MB in the end (delta: 16.8MB). Free memory was 30.9MB in the beginning and 46.2MB in the end (delta: -15.3MB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. [2021-11-25 18:56:17,252 INFO L158 Benchmark]: Boogie Procedure Inliner took 113.01ms. Allocated memory is still 71.3MB. Free memory was 46.0MB in the beginning and 44.1MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 18:56:17,253 INFO L158 Benchmark]: Boogie Preprocessor took 70.23ms. Allocated memory is still 71.3MB. Free memory was 44.1MB in the beginning and 42.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 18:56:17,253 INFO L158 Benchmark]: RCFGBuilder took 918.75ms. Allocated memory is still 71.3MB. Free memory was 42.2MB in the beginning and 41.2MB in the end (delta: 964.6kB). Peak memory consumption was 11.4MB. Max. memory is 16.1GB. [2021-11-25 18:56:17,254 INFO L158 Benchmark]: TraceAbstraction took 2652.70ms. Allocated memory is still 71.3MB. Free memory was 40.7MB in the beginning and 47.9MB in the end (delta: -7.3MB). Peak memory consumption was 12.2MB. Max. memory is 16.1GB. [2021-11-25 18:56:17,255 INFO L158 Benchmark]: Witness Printer took 5.35ms. Allocated memory is still 71.3MB. Free memory was 47.9MB in the beginning and 47.5MB in the end (delta: 400.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 18:56:17,258 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 54.5MB. Free memory was 35.8MB in the beginning and 35.8MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 718.16ms. Allocated memory was 54.5MB in the beginning and 71.3MB in the end (delta: 16.8MB). Free memory was 30.9MB in the beginning and 46.2MB in the end (delta: -15.3MB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 113.01ms. Allocated memory is still 71.3MB. Free memory was 46.0MB in the beginning and 44.1MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 70.23ms. Allocated memory is still 71.3MB. Free memory was 44.1MB in the beginning and 42.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 918.75ms. Allocated memory is still 71.3MB. Free memory was 42.2MB in the beginning and 41.2MB in the end (delta: 964.6kB). Peak memory consumption was 11.4MB. Max. memory is 16.1GB. * TraceAbstraction took 2652.70ms. Allocated memory is still 71.3MB. Free memory was 40.7MB in the beginning and 47.9MB in the end (delta: -7.3MB). Peak memory consumption was 12.2MB. Max. memory is 16.1GB. * Witness Printer took 5.35ms. Allocated memory is still 71.3MB. Free memory was 47.9MB in the beginning and 47.5MB in the end (delta: 400.2kB). There was no memory consumed. Max. memory is 16.1GB. * 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={6:0}, flag=1] [L535] List t; [L536] List l1; [L537] List l2; [L538] List b; [L539] List u; [L540] List p = a; VAL [a={6:0}, flag=1, p={6:0}] [L541] COND FALSE !(__VERIFIER_nondet_int()) [L554] p->h = 3 VAL [a={6:0}, flag=1, p={6:0}] [L555] EXPR a->h VAL [a={6:0}, a->h=3, flag=1, p={6:0}] [L555] COND TRUE a->h == 3 [L555] return 0; VAL [\result=0, a={6:0}, flag=1, p={6:0}] - 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 2 procedures, 79 locations, 30 error locations. Started 1 CEGAR loops. OverallTime: 2.5s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 233 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 233 mSDsluCounter, 119 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 38 mSDsCounter, 33 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 158 IncrementalHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 33 mSolverCounterUnsat, 81 mSDtfsCounter, 158 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=79occurred in iteration=2, InterpolantAutomatonStates: 8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 2 MinimizatonAttempts, 13 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 70 SizeOfPredicates, 3 NumberOfNonLiveVariables, 56 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 [2021-11-25 18:56:17,331 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ec6938-e35c-4402-92b1-e607c6144c18/bin/utaipan-eEHZpOm5b7/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 Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample