./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test8_2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6904e2-0c48-49a5-9fff-8d5be38b78fa/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6904e2-0c48-49a5-9fff-8d5be38b78fa/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6904e2-0c48-49a5-9fff-8d5be38b78fa/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6904e2-0c48-49a5-9fff-8d5be38b78fa/bin/utaipan-q2qaUkNPG8/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test8_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6904e2-0c48-49a5-9fff-8d5be38b78fa/bin/utaipan-q2qaUkNPG8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6904e2-0c48-49a5-9fff-8d5be38b78fa/bin/utaipan-q2qaUkNPG8 --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 79a252c986c7b06f14f3ee394685573049ad76fb ............................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6904e2-0c48-49a5-9fff-8d5be38b78fa/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6904e2-0c48-49a5-9fff-8d5be38b78fa/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6904e2-0c48-49a5-9fff-8d5be38b78fa/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6904e2-0c48-49a5-9fff-8d5be38b78fa/bin/utaipan-q2qaUkNPG8/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test8_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6904e2-0c48-49a5-9fff-8d5be38b78fa/bin/utaipan-q2qaUkNPG8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6904e2-0c48-49a5-9fff-8d5be38b78fa/bin/utaipan-q2qaUkNPG8 --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 79a252c986c7b06f14f3ee394685573049ad76fb ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-free) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:23:18,785 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:23:18,788 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:23:18,841 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:23:18,842 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:23:18,843 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:23:18,845 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:23:18,847 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:23:18,850 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:23:18,851 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:23:18,852 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:23:18,854 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:23:18,855 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:23:18,856 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:23:18,858 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:23:18,859 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:23:18,861 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:23:18,862 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:23:18,864 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:23:18,867 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:23:18,869 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:23:18,882 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:23:18,883 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:23:18,884 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:23:18,888 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:23:18,889 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:23:18,889 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:23:18,890 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:23:18,891 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:23:18,892 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:23:18,892 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:23:18,898 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:23:18,900 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:23:18,901 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:23:18,903 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:23:18,903 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:23:18,904 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:23:18,904 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:23:18,905 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:23:18,906 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:23:18,907 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:23:18,907 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6904e2-0c48-49a5-9fff-8d5be38b78fa/bin/utaipan-q2qaUkNPG8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-10-13 07:23:18,955 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:23:18,955 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:23:18,956 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:23:18,956 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:23:18,957 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:23:18,957 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:23:18,957 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:23:18,957 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:23:18,957 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:23:18,958 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:23:18,958 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:23:18,958 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:23:18,958 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:23:18,958 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:23:18,959 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:23:18,959 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 07:23:18,960 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 07:23:18,960 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:23:18,960 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:23:18,960 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 07:23:18,960 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:23:18,966 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:23:18,966 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:23:18,967 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-13 07:23:18,967 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-13 07:23:18,967 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-13 07:23:18,969 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:23:18,970 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:23:18,971 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:23:18,971 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:23:18,971 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:23:18,971 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:23:18,972 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:23:18,972 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:23:18,972 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:23:18,972 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:23:18,973 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:23:18,974 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:23:18,974 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:23:18,974 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_5d6904e2-0c48-49a5-9fff-8d5be38b78fa/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6904e2-0c48-49a5-9fff-8d5be38b78fa/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 79a252c986c7b06f14f3ee394685573049ad76fb [2021-10-13 07:23:19,298 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:23:19,326 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:23:19,328 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:23:19,329 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:23:19,330 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:23:19,331 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6904e2-0c48-49a5-9fff-8d5be38b78fa/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/ldv-memsafety/memleaks_test8_2.i [2021-10-13 07:23:19,392 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6904e2-0c48-49a5-9fff-8d5be38b78fa/bin/utaipan-q2qaUkNPG8/data/4313ce91d/f1b204c7980040d692c00fa651ea4ea8/FLAGf8ffeb7de [2021-10-13 07:23:19,929 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:23:19,930 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6904e2-0c48-49a5-9fff-8d5be38b78fa/sv-benchmarks/c/ldv-memsafety/memleaks_test8_2.i [2021-10-13 07:23:19,945 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6904e2-0c48-49a5-9fff-8d5be38b78fa/bin/utaipan-q2qaUkNPG8/data/4313ce91d/f1b204c7980040d692c00fa651ea4ea8/FLAGf8ffeb7de [2021-10-13 07:23:20,218 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6904e2-0c48-49a5-9fff-8d5be38b78fa/bin/utaipan-q2qaUkNPG8/data/4313ce91d/f1b204c7980040d692c00fa651ea4ea8 [2021-10-13 07:23:20,221 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:23:20,222 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:23:20,224 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:23:20,224 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:23:20,227 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:23:20,227 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:23:20" (1/1) ... [2021-10-13 07:23:20,228 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a2e67a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:20, skipping insertion in model container [2021-10-13 07:23:20,228 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:23:20" (1/1) ... [2021-10-13 07:23:20,233 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:23:20,289 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:23:20,745 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:23:20,771 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-10-13 07:23:20,772 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4191da34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:20, skipping insertion in model container [2021-10-13 07:23:20,772 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:23:20,773 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-13 07:23:20,776 INFO L168 Benchmark]: Toolchain (without parser) took 551.43 ms. Allocated memory is still 104.9 MB. Free memory was 71.6 MB in the beginning and 77.3 MB in the end (delta: -5.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:23:20,777 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 104.9 MB. Free memory is still 57.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:23:20,779 INFO L168 Benchmark]: CACSL2BoogieTranslator took 548.97 ms. Allocated memory is still 104.9 MB. Free memory was 71.6 MB in the beginning and 77.3 MB in the end (delta: -5.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:23:20,781 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 104.9 MB. Free memory is still 57.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 548.97 ms. Allocated memory is still 104.9 MB. Free memory was 71.6 MB in the beginning and 77.3 MB in the end (delta: -5.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:23:23,027 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:23:23,031 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:23:23,079 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:23:23,080 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:23:23,081 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:23:23,083 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:23:23,085 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:23:23,087 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:23:23,088 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:23:23,089 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:23:23,090 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:23:23,091 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:23:23,092 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:23:23,094 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:23:23,095 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:23:23,096 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:23:23,097 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:23:23,099 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:23:23,101 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:23:23,103 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:23:23,104 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:23:23,105 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:23:23,106 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:23:23,110 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:23:23,110 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:23:23,110 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:23:23,111 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:23:23,112 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:23:23,113 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:23:23,114 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:23:23,115 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:23:23,115 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:23:23,116 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:23:23,117 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:23:23,118 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:23:23,118 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:23:23,119 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:23:23,119 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:23:23,120 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:23:23,120 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:23:23,121 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6904e2-0c48-49a5-9fff-8d5be38b78fa/bin/utaipan-q2qaUkNPG8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-10-13 07:23:23,147 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:23:23,148 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:23:23,149 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:23:23,149 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:23:23,149 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:23:23,149 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:23:23,149 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:23:23,150 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:23:23,150 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:23:23,151 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 07:23:23,151 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 07:23:23,151 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:23:23,151 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:23:23,151 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 07:23:23,152 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:23:23,152 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:23:23,152 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:23:23,152 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-13 07:23:23,152 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-13 07:23:23,152 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-13 07:23:23,153 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:23:23,153 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:23:23,153 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 07:23:23,153 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 07:23:23,153 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:23:23,154 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:23:23,154 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:23:23,154 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 07:23:23,154 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:23:23,154 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:23:23,155 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:23:23,155 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:23:23,155 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 07:23:23,155 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 07:23:23,155 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:23:23,155 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:23:23,156 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6904e2-0c48-49a5-9fff-8d5be38b78fa/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6904e2-0c48-49a5-9fff-8d5be38b78fa/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 79a252c986c7b06f14f3ee394685573049ad76fb [2021-10-13 07:23:23,503 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:23:23,524 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:23:23,527 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:23:23,528 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:23:23,529 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:23:23,530 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6904e2-0c48-49a5-9fff-8d5be38b78fa/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/ldv-memsafety/memleaks_test8_2.i [2021-10-13 07:23:23,602 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6904e2-0c48-49a5-9fff-8d5be38b78fa/bin/utaipan-q2qaUkNPG8/data/9c24af4ec/d1d6f8c2a7b34c51820bd7ad5b9f36d7/FLAG8f61fda40 [2021-10-13 07:23:24,165 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:23:24,166 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6904e2-0c48-49a5-9fff-8d5be38b78fa/sv-benchmarks/c/ldv-memsafety/memleaks_test8_2.i [2021-10-13 07:23:24,182 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6904e2-0c48-49a5-9fff-8d5be38b78fa/bin/utaipan-q2qaUkNPG8/data/9c24af4ec/d1d6f8c2a7b34c51820bd7ad5b9f36d7/FLAG8f61fda40 [2021-10-13 07:23:24,446 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6904e2-0c48-49a5-9fff-8d5be38b78fa/bin/utaipan-q2qaUkNPG8/data/9c24af4ec/d1d6f8c2a7b34c51820bd7ad5b9f36d7 [2021-10-13 07:23:24,453 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:23:24,457 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:23:24,459 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:23:24,459 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:23:24,462 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:23:24,463 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:23:24" (1/1) ... [2021-10-13 07:23:24,464 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ec6d56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:24, skipping insertion in model container [2021-10-13 07:23:24,465 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:23:24" (1/1) ... [2021-10-13 07:23:24,473 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:23:24,544 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:23:25,074 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:23:25,102 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-13 07:23:25,117 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:23:25,203 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:23:25,212 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:23:25,293 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:23:25,355 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:23:25,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:25 WrapperNode [2021-10-13 07:23:25,356 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:23:25,357 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:23:25,357 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:23:25,358 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:23:25,365 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:25" (1/1) ... [2021-10-13 07:23:25,402 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:25" (1/1) ... [2021-10-13 07:23:25,436 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:23:25,437 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:23:25,437 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:23:25,437 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:23:25,446 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:25" (1/1) ... [2021-10-13 07:23:25,447 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:25" (1/1) ... [2021-10-13 07:23:25,468 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:25" (1/1) ... [2021-10-13 07:23:25,468 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:25" (1/1) ... [2021-10-13 07:23:25,474 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:25" (1/1) ... [2021-10-13 07:23:25,476 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:25" (1/1) ... [2021-10-13 07:23:25,487 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:25" (1/1) ... [2021-10-13 07:23:25,490 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:23:25,491 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:23:25,491 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:23:25,491 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:23:25,492 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:25" (1/1) ... [2021-10-13 07:23:25,505 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:23:25,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6904e2-0c48-49a5-9fff-8d5be38b78fa/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:23:25,529 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6904e2-0c48-49a5-9fff-8d5be38b78fa/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:23:25,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6904e2-0c48-49a5-9fff-8d5be38b78fa/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:23:25,568 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-13 07:23:25,568 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:23:25,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 07:23:25,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-10-13 07:23:25,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:23:25,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:23:25,854 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:23:25,854 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2021-10-13 07:23:25,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:23:25 BoogieIcfgContainer [2021-10-13 07:23:25,856 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:23:25,858 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:23:25,858 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:23:25,861 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:23:25,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:23:24" (1/3) ... [2021-10-13 07:23:25,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cf2d3cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:23:25, skipping insertion in model container [2021-10-13 07:23:25,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:23:25" (2/3) ... [2021-10-13 07:23:25,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cf2d3cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:23:25, skipping insertion in model container [2021-10-13 07:23:25,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:23:25" (3/3) ... [2021-10-13 07:23:25,864 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test8_2.i [2021-10-13 07:23:25,869 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:23:25,869 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-10-13 07:23:25,911 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:23:25,916 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 07:23:25,917 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-10-13 07:23:25,929 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 22 states have internal predecessors, (25), 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) [2021-10-13 07:23:25,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 07:23:25,934 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:23:25,935 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 07:23:25,935 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 4 more)] === [2021-10-13 07:23:25,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:23:25,941 INFO L82 PathProgramCache]: Analyzing trace with hash 889508744, now seen corresponding path program 1 times [2021-10-13 07:23:25,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:23:25,952 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1113584201] [2021-10-13 07:23:25,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:23:25,953 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:23:25,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6904e2-0c48-49a5-9fff-8d5be38b78fa/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:23:25,957 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6904e2-0c48-49a5-9fff-8d5be38b78fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:23:25,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6904e2-0c48-49a5-9fff-8d5be38b78fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 07:23:26,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:23:26,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:23:26,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:23:26,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:23:26,153 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:23:26,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:23:26,204 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:23:26,205 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1113584201] [2021-10-13 07:23:26,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1113584201] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:23:26,205 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:23:26,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:23:26,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651087113] [2021-10-13 07:23:26,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:23:26,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:23:26,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:23:26,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:23:26,242 INFO L87 Difference]: Start difference. First operand has 23 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 22 states have internal predecessors, (25), 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) 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) [2021-10-13 07:23:26,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:23:26,298 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2021-10-13 07:23:26,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:23:26,300 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 [2021-10-13 07:23:26,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:23:26,310 INFO L225 Difference]: With dead ends: 21 [2021-10-13 07:23:26,310 INFO L226 Difference]: Without dead ends: 19 [2021-10-13 07:23:26,311 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:23:26,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-10-13 07:23:26,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-10-13 07:23:26,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 14 states have (on average 1.5) internal successors, (21), 18 states have internal predecessors, (21), 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) [2021-10-13 07:23:26,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-10-13 07:23:26,340 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 6 [2021-10-13 07:23:26,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:23:26,341 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-10-13 07:23:26,341 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) [2021-10-13 07:23:26,341 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-10-13 07:23:26,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 07:23:26,342 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:23:26,342 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:23:26,353 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6904e2-0c48-49a5-9fff-8d5be38b78fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-13 07:23:26,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6904e2-0c48-49a5-9fff-8d5be38b78fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:23:26,550 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 4 more)] === [2021-10-13 07:23:26,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:23:26,551 INFO L82 PathProgramCache]: Analyzing trace with hash 1804967335, now seen corresponding path program 1 times [2021-10-13 07:23:26,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:23:26,552 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1795799820] [2021-10-13 07:23:26,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:23:26,552 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:23:26,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6904e2-0c48-49a5-9fff-8d5be38b78fa/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:23:26,553 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6904e2-0c48-49a5-9fff-8d5be38b78fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:23:26,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6904e2-0c48-49a5-9fff-8d5be38b78fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 07:23:26,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:23:26,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 07:23:26,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:23:26,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:23:26,760 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:23:26,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:23:26,827 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:23:26,827 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1795799820] [2021-10-13 07:23:26,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1795799820] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:23:26,827 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:23:26,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-10-13 07:23:26,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289527654] [2021-10-13 07:23:26,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 07:23:26,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:23:26,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 07:23:26,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:23:26,831 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 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) [2021-10-13 07:23:27,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:23:27,027 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2021-10-13 07:23:27,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 07:23:27,028 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 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 7 [2021-10-13 07:23:27,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:23:27,029 INFO L225 Difference]: With dead ends: 31 [2021-10-13 07:23:27,029 INFO L226 Difference]: Without dead ends: 31 [2021-10-13 07:23:27,030 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 162.6ms TimeCoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2021-10-13 07:23:27,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-10-13 07:23:27,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 23. [2021-10-13 07:23:27,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 20 states have (on average 1.3) internal successors, (26), 22 states have internal predecessors, (26), 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) [2021-10-13 07:23:27,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2021-10-13 07:23:27,035 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 7 [2021-10-13 07:23:27,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:23:27,036 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2021-10-13 07:23:27,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 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) [2021-10-13 07:23:27,036 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2021-10-13 07:23:27,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 07:23:27,037 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:23:27,037 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:23:27,055 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6904e2-0c48-49a5-9fff-8d5be38b78fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 07:23:27,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6904e2-0c48-49a5-9fff-8d5be38b78fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:23:27,248 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 4 more)] === [2021-10-13 07:23:27,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:23:27,249 INFO L82 PathProgramCache]: Analyzing trace with hash 119412586, now seen corresponding path program 1 times [2021-10-13 07:23:27,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:23:27,250 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1979250259] [2021-10-13 07:23:27,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:23:27,250 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:23:27,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6904e2-0c48-49a5-9fff-8d5be38b78fa/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:23:27,251 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6904e2-0c48-49a5-9fff-8d5be38b78fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:23:27,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6904e2-0c48-49a5-9fff-8d5be38b78fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 07:23:27,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:23:27,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:23:27,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:23:27,343 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 [2021-10-13 07:23:27,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:23:27,378 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:23:27,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:23:27,413 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:23:27,413 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1979250259] [2021-10-13 07:23:27,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1979250259] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:23:27,414 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:23:27,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:23:27,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700215351] [2021-10-13 07:23:27,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:23:27,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:23:27,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:23:27,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:23:27,416 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-10-13 07:23:27,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:23:27,470 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2021-10-13 07:23:27,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:23:27,470 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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 8 [2021-10-13 07:23:27,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:23:27,471 INFO L225 Difference]: With dead ends: 23 [2021-10-13 07:23:27,471 INFO L226 Difference]: Without dead ends: 23 [2021-10-13 07:23:27,472 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:23:27,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-13 07:23:27,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-10-13 07:23:27,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 20 states have (on average 1.25) internal successors, (25), 22 states have internal predecessors, (25), 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) [2021-10-13 07:23:27,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2021-10-13 07:23:27,476 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 8 [2021-10-13 07:23:27,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:23:27,476 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2021-10-13 07:23:27,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-10-13 07:23:27,477 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2021-10-13 07:23:27,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 07:23:27,477 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:23:27,478 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:23:27,496 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6904e2-0c48-49a5-9fff-8d5be38b78fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 07:23:27,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6904e2-0c48-49a5-9fff-8d5be38b78fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:23:27,696 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 4 more)] === [2021-10-13 07:23:27,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:23:27,697 INFO L82 PathProgramCache]: Analyzing trace with hash 176927092, now seen corresponding path program 1 times [2021-10-13 07:23:27,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:23:27,700 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [91589797] [2021-10-13 07:23:27,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:23:27,701 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:23:27,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6904e2-0c48-49a5-9fff-8d5be38b78fa/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:23:27,702 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6904e2-0c48-49a5-9fff-8d5be38b78fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:23:27,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6904e2-0c48-49a5-9fff-8d5be38b78fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 07:23:27,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:23:27,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:23:27,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:23:27,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:23:27,835 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:23:27,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:23:27,867 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:23:27,867 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [91589797] [2021-10-13 07:23:27,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [91589797] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:23:27,869 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:23:27,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 07:23:27,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30818923] [2021-10-13 07:23:27,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:23:27,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:23:27,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:23:27,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:23:27,873 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2021-10-13 07:23:27,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:23:27,901 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2021-10-13 07:23:27,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:23:27,902 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2021-10-13 07:23:27,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:23:27,904 INFO L225 Difference]: With dead ends: 30 [2021-10-13 07:23:27,905 INFO L226 Difference]: Without dead ends: 28 [2021-10-13 07:23:27,909 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:23:27,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-13 07:23:27,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 23. [2021-10-13 07:23:27,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 20 states have (on average 1.25) internal successors, (25), 22 states have internal predecessors, (25), 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) [2021-10-13 07:23:27,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2021-10-13 07:23:27,917 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 8 [2021-10-13 07:23:27,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:23:27,918 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2021-10-13 07:23:27,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2021-10-13 07:23:27,918 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2021-10-13 07:23:27,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 07:23:27,919 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:23:27,920 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:23:27,940 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6904e2-0c48-49a5-9fff-8d5be38b78fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-13 07:23:28,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6904e2-0c48-49a5-9fff-8d5be38b78fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:23:28,140 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 4 more)] === [2021-10-13 07:23:28,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:23:28,141 INFO L82 PathProgramCache]: Analyzing trace with hash 176670888, now seen corresponding path program 1 times [2021-10-13 07:23:28,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:23:28,141 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1960896513] [2021-10-13 07:23:28,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:23:28,142 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:23:28,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6904e2-0c48-49a5-9fff-8d5be38b78fa/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:23:28,143 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6904e2-0c48-49a5-9fff-8d5be38b78fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:23:28,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6904e2-0c48-49a5-9fff-8d5be38b78fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-13 07:23:28,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:23:28,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 07:23:28,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:23:28,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:23:28,280 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:23:28,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:23:28,312 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:23:28,312 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1960896513] [2021-10-13 07:23:28,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1960896513] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:23:28,313 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:23:28,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-13 07:23:28,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842978445] [2021-10-13 07:23:28,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:23:28,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:23:28,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:23:28,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:23:28,315 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-10-13 07:23:28,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:23:28,360 INFO L93 Difference]: Finished difference Result 19 states and 18 transitions. [2021-10-13 07:23:28,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:23:28,361 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 8 [2021-10-13 07:23:28,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:23:28,362 INFO L225 Difference]: With dead ends: 19 [2021-10-13 07:23:28,362 INFO L226 Difference]: Without dead ends: 16 [2021-10-13 07:23:28,362 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:23:28,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-10-13 07:23:28,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-10-13 07:23:28,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 15 states have internal predecessors, (15), 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) [2021-10-13 07:23:28,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 15 transitions. [2021-10-13 07:23:28,364 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 15 transitions. Word has length 8 [2021-10-13 07:23:28,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:23:28,365 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 15 transitions. [2021-10-13 07:23:28,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-10-13 07:23:28,365 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2021-10-13 07:23:28,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-13 07:23:28,366 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:23:28,366 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:23:28,381 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6904e2-0c48-49a5-9fff-8d5be38b78fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-13 07:23:28,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6904e2-0c48-49a5-9fff-8d5be38b78fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:23:28,577 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 4 more)] === [2021-10-13 07:23:28,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:23:28,578 INFO L82 PathProgramCache]: Analyzing trace with hash -1842728914, now seen corresponding path program 1 times [2021-10-13 07:23:28,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:23:28,578 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1931148624] [2021-10-13 07:23:28,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:23:28,578 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:23:28,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6904e2-0c48-49a5-9fff-8d5be38b78fa/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:23:28,579 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6904e2-0c48-49a5-9fff-8d5be38b78fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:23:28,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6904e2-0c48-49a5-9fff-8d5be38b78fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-13 07:23:28,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:23:28,660 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 07:23:28,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:23:28,695 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-13 07:23:28,696 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 07:23:28,697 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 07:23:28,698 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 07:23:28,699 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 07:23:28,699 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 07:23:28,699 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 07:23:28,699 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 07:23:28,700 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 07:23:28,717 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6904e2-0c48-49a5-9fff-8d5be38b78fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-13 07:23:28,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6904e2-0c48-49a5-9fff-8d5be38b78fa/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:23:28,919 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:23:28,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:23:28 BoogieIcfgContainer [2021-10-13 07:23:28,942 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:23:28,943 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:23:28,943 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:23:28,943 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:23:28,943 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:23:25" (3/4) ... [2021-10-13 07:23:28,945 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-13 07:23:29,006 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6904e2-0c48-49a5-9fff-8d5be38b78fa/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 07:23:29,006 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:23:29,007 INFO L168 Benchmark]: Toolchain (without parser) took 4549.94 ms. Allocated memory was 71.3 MB in the beginning and 96.5 MB in the end (delta: 25.2 MB). Free memory was 47.2 MB in the beginning and 59.9 MB in the end (delta: -12.6 MB). Peak memory consumption was 12.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:23:29,008 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 52.4 MB. Free memory is still 32.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:23:29,008 INFO L168 Benchmark]: CACSL2BoogieTranslator took 897.65 ms. Allocated memory is still 71.3 MB. Free memory was 47.0 MB in the beginning and 36.6 MB in the end (delta: 10.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 07:23:29,008 INFO L168 Benchmark]: Boogie Procedure Inliner took 79.30 ms. Allocated memory is still 71.3 MB. Free memory was 36.6 MB in the beginning and 34.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:23:29,009 INFO L168 Benchmark]: Boogie Preprocessor took 53.15 ms. Allocated memory is still 71.3 MB. Free memory was 34.5 MB in the beginning and 53.7 MB in the end (delta: -19.2 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.1 GB. [2021-10-13 07:23:29,009 INFO L168 Benchmark]: RCFGBuilder took 365.24 ms. Allocated memory is still 71.3 MB. Free memory was 53.7 MB in the beginning and 43.2 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:23:29,010 INFO L168 Benchmark]: TraceAbstraction took 3084.46 ms. Allocated memory was 71.3 MB in the beginning and 96.5 MB in the end (delta: 25.2 MB). Free memory was 42.9 MB in the beginning and 62.0 MB in the end (delta: -19.1 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.1 GB. [2021-10-13 07:23:29,010 INFO L168 Benchmark]: Witness Printer took 63.38 ms. Allocated memory is still 96.5 MB. Free memory was 62.0 MB in the beginning and 59.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:23:29,012 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 52.4 MB. Free memory is still 32.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 897.65 ms. Allocated memory is still 71.3 MB. Free memory was 47.0 MB in the beginning and 36.6 MB in the end (delta: 10.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 79.30 ms. Allocated memory is still 71.3 MB. Free memory was 36.6 MB in the beginning and 34.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 53.15 ms. Allocated memory is still 71.3 MB. Free memory was 34.5 MB in the beginning and 53.7 MB in the end (delta: -19.2 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.1 GB. * RCFGBuilder took 365.24 ms. Allocated memory is still 71.3 MB. Free memory was 53.7 MB in the beginning and 43.2 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3084.46 ms. Allocated memory was 71.3 MB in the beginning and 96.5 MB in the end (delta: 25.2 MB). Free memory was 42.9 MB in the beginning and 62.0 MB in the end (delta: -19.1 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.1 GB. * Witness Printer took 63.38 ms. Allocated memory is still 96.5 MB. Free memory was 62.0 MB in the beginning and 59.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 762]: free of unallocated memory possible free of unallocated memory possible We found a FailurePath: [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; [L757] int *a8; VAL [a8={0:0}, ldv_global_msg_list={-2147483648:0}] [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L759] a8 = (int *)ldv_malloc(sizeof(int)) [L762] COND TRUE \read(*a8) VAL [a8={1:0}, ldv_global_msg_list={-2147483648:0}] [L762] free(a8) VAL [a8={1:0}, ldv_global_msg_list={-2147483648:0}] [L762] free(a8) VAL [a8={1:0}, ldv_global_msg_list={-2147483648:0}] [L762] free(a8) [L762] COND TRUE \read(*a8) VAL [a8={1:0}, ldv_global_msg_list={-2147483648:0}] [L762] free(a8) VAL [a8={1:0}, ldv_global_msg_list={-2147483648:0}] [L762] free(a8) VAL [a8={1:0}, ldv_global_msg_list={-2147483648:0}] [L762] free(a8) VAL [a8={1:0}, ldv_global_msg_list={-2147483648:0}] - UnprovableResult [Line: 762]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 762]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 762]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 762]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 762]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 770]: 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 1 procedures, 23 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 3007.7ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 12.4ms, AutomataDifference: 427.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 76 SDtfs, 121 SDslu, 44 SDs, 0 SdLazy, 109 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 167.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 71 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 223.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, InterpolantAutomatonStates: 22, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 33.6ms AutomataMinimizationTime, 5 MinimizatonAttempts, 13 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 49.2ms SsaConstructionTime, 96.2ms SatisfiabilityAnalysisTime, 650.4ms InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 64 ConstructedInterpolants, 0 QuantifiedInterpolants, 234 SizeOfPredicates, 5 NumberOfNonLiveVariables, 164 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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 proved your program to be incorrect! [2021-10-13 07:23:29,063 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d6904e2-0c48-49a5-9fff-8d5be38b78fa/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...