./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test4-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7304486b-b821-4f25-bb0c-943c1f086616/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7304486b-b821-4f25-bb0c-943c1f086616/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7304486b-b821-4f25-bb0c-943c1f086616/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7304486b-b821-4f25-bb0c-943c1f086616/bin/utaipan-9zjyvhn0QE/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test4-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7304486b-b821-4f25-bb0c-943c1f086616/bin/utaipan-9zjyvhn0QE/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7304486b-b821-4f25-bb0c-943c1f086616/bin/utaipan-9zjyvhn0QE --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 9bd23263f414c48e50ed8daa5b2985179bde28a9902b6873b1962b90b4067acc ............................................................................................................................................. 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_7304486b-b821-4f25-bb0c-943c1f086616/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7304486b-b821-4f25-bb0c-943c1f086616/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7304486b-b821-4f25-bb0c-943c1f086616/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7304486b-b821-4f25-bb0c-943c1f086616/bin/utaipan-9zjyvhn0QE/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test4-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7304486b-b821-4f25-bb0c-943c1f086616/bin/utaipan-9zjyvhn0QE/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7304486b-b821-4f25-bb0c-943c1f086616/bin/utaipan-9zjyvhn0QE --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 9bd23263f414c48e50ed8daa5b2985179bde28a9902b6873b1962b90b4067acc ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 10:53:34,646 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 10:53:34,650 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 10:53:34,727 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 10:53:34,728 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 10:53:34,735 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 10:53:34,737 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 10:53:34,742 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 10:53:34,746 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 10:53:34,755 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 10:53:34,756 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 10:53:34,758 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 10:53:34,759 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 10:53:34,762 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 10:53:34,765 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 10:53:34,772 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 10:53:34,776 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 10:53:34,778 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 10:53:34,783 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 10:53:34,789 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 10:53:34,795 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 10:53:34,799 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 10:53:34,801 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 10:53:34,804 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 10:53:34,810 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 10:53:34,811 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 10:53:34,813 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 10:53:34,816 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 10:53:34,817 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 10:53:34,818 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 10:53:34,819 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 10:53:34,820 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 10:53:34,823 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 10:53:34,824 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 10:53:34,827 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 10:53:34,827 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 10:53:34,828 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 10:53:34,828 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 10:53:34,828 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 10:53:34,830 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 10:53:34,831 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 10:53:34,832 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7304486b-b821-4f25-bb0c-943c1f086616/bin/utaipan-9zjyvhn0QE/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-10-24 10:53:34,888 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 10:53:34,888 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 10:53:34,890 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 10:53:34,890 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 10:53:34,891 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 10:53:34,891 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 10:53:34,891 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 10:53:34,892 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 10:53:34,892 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 10:53:34,892 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 10:53:34,893 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 10:53:34,894 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 10:53:34,894 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 10:53:34,894 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 10:53:34,895 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 10:53:34,896 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-24 10:53:34,897 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-24 10:53:34,897 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 10:53:34,897 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 10:53:34,897 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-24 10:53:34,898 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 10:53:34,898 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 10:53:34,898 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 10:53:34,899 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-24 10:53:34,899 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-24 10:53:34,899 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-24 10:53:34,901 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 10:53:34,901 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 10:53:34,902 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 10:53:34,902 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 10:53:34,902 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 10:53:34,903 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 10:53:34,903 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:53:34,903 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 10:53:34,904 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 10:53:34,904 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 10:53:34,904 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 10:53:34,905 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 10:53:34,905 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 10:53:34,905 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_7304486b-b821-4f25-bb0c-943c1f086616/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7304486b-b821-4f25-bb0c-943c1f086616/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9bd23263f414c48e50ed8daa5b2985179bde28a9902b6873b1962b90b4067acc [2021-10-24 10:53:35,262 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 10:53:35,302 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 10:53:35,305 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 10:53:35,307 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 10:53:35,308 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 10:53:35,309 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7304486b-b821-4f25-bb0c-943c1f086616/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/ldv-memsafety/memleaks_test4-1.i [2021-10-24 10:53:35,400 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7304486b-b821-4f25-bb0c-943c1f086616/bin/utaipan-9zjyvhn0QE/data/abb0aa0c5/fdb565c3a7e74dca970a50ba8979114c/FLAGc1b33fe58 [2021-10-24 10:53:36,008 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 10:53:36,008 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7304486b-b821-4f25-bb0c-943c1f086616/sv-benchmarks/c/ldv-memsafety/memleaks_test4-1.i [2021-10-24 10:53:36,028 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7304486b-b821-4f25-bb0c-943c1f086616/bin/utaipan-9zjyvhn0QE/data/abb0aa0c5/fdb565c3a7e74dca970a50ba8979114c/FLAGc1b33fe58 [2021-10-24 10:53:36,282 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7304486b-b821-4f25-bb0c-943c1f086616/bin/utaipan-9zjyvhn0QE/data/abb0aa0c5/fdb565c3a7e74dca970a50ba8979114c [2021-10-24 10:53:36,285 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 10:53:36,287 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 10:53:36,289 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 10:53:36,289 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 10:53:36,297 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 10:53:36,298 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:53:36" (1/1) ... [2021-10-24 10:53:36,300 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ba6d3c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:53:36, skipping insertion in model container [2021-10-24 10:53:36,300 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:53:36" (1/1) ... [2021-10-24 10:53:36,308 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 10:53:36,362 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 10:53:36,977 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:53:37,011 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) [2021-10-24 10:53:37,012 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4d0ffdfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:53:37, skipping insertion in model container [2021-10-24 10:53:37,012 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 10:53:37,012 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-24 10:53:37,017 INFO L168 Benchmark]: Toolchain (without parser) took 726.01 ms. Allocated memory was 94.4 MB in the beginning and 130.0 MB in the end (delta: 35.7 MB). Free memory was 57.4 MB in the beginning and 102.5 MB in the end (delta: -45.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-24 10:53:37,020 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 94.4 MB. Free memory was 65.0 MB in the beginning and 65.0 MB in the end (delta: 25.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:53:37,022 INFO L168 Benchmark]: CACSL2BoogieTranslator took 723.28 ms. Allocated memory was 94.4 MB in the beginning and 130.0 MB in the end (delta: 35.7 MB). Free memory was 57.2 MB in the beginning and 102.5 MB in the end (delta: -45.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-24 10:53:37,025 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 94.4 MB. Free memory was 65.0 MB in the beginning and 65.0 MB in the end (delta: 25.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 723.28 ms. Allocated memory was 94.4 MB in the beginning and 130.0 MB in the end (delta: 35.7 MB). Free memory was 57.2 MB in the beginning and 102.5 MB in the end (delta: -45.2 MB). Peak memory consumption was 10.5 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-e943c26 [2021-10-24 10:53:39,922 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 10:53:39,926 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 10:53:39,994 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 10:53:39,995 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 10:53:40,002 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 10:53:40,004 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 10:53:40,010 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 10:53:40,016 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 10:53:40,029 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 10:53:40,031 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 10:53:40,033 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 10:53:40,035 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 10:53:40,038 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 10:53:40,041 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 10:53:40,048 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 10:53:40,049 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 10:53:40,051 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 10:53:40,054 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 10:53:40,063 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 10:53:40,066 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 10:53:40,068 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 10:53:40,072 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 10:53:40,075 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 10:53:40,082 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 10:53:40,083 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 10:53:40,083 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 10:53:40,086 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 10:53:40,086 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 10:53:40,088 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 10:53:40,088 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 10:53:40,090 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 10:53:40,092 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 10:53:40,093 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 10:53:40,095 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 10:53:40,096 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 10:53:40,097 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 10:53:40,097 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 10:53:40,098 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 10:53:40,100 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 10:53:40,101 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 10:53:40,102 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7304486b-b821-4f25-bb0c-943c1f086616/bin/utaipan-9zjyvhn0QE/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-10-24 10:53:40,156 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 10:53:40,157 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 10:53:40,159 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 10:53:40,159 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 10:53:40,160 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 10:53:40,160 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 10:53:40,160 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 10:53:40,160 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 10:53:40,161 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 10:53:40,162 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-24 10:53:40,164 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-24 10:53:40,164 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 10:53:40,165 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 10:53:40,165 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-24 10:53:40,165 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 10:53:40,166 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 10:53:40,166 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 10:53:40,166 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-24 10:53:40,166 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-24 10:53:40,167 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-24 10:53:40,167 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 10:53:40,167 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 10:53:40,168 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-24 10:53:40,168 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-24 10:53:40,168 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 10:53:40,168 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 10:53:40,169 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 10:53:40,169 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-24 10:53:40,169 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 10:53:40,170 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:53:40,170 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 10:53:40,170 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 10:53:40,171 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-24 10:53:40,171 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-24 10:53:40,171 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 10:53:40,172 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 10:53:40,172 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_7304486b-b821-4f25-bb0c-943c1f086616/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7304486b-b821-4f25-bb0c-943c1f086616/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9bd23263f414c48e50ed8daa5b2985179bde28a9902b6873b1962b90b4067acc [2021-10-24 10:53:40,679 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 10:53:40,718 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 10:53:40,723 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 10:53:40,725 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 10:53:40,726 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 10:53:40,728 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7304486b-b821-4f25-bb0c-943c1f086616/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/ldv-memsafety/memleaks_test4-1.i [2021-10-24 10:53:40,809 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7304486b-b821-4f25-bb0c-943c1f086616/bin/utaipan-9zjyvhn0QE/data/32d3f35c1/7924975b457642ab9e3c12c17fd3a49c/FLAG0e082fed7 [2021-10-24 10:53:41,533 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 10:53:41,533 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7304486b-b821-4f25-bb0c-943c1f086616/sv-benchmarks/c/ldv-memsafety/memleaks_test4-1.i [2021-10-24 10:53:41,562 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7304486b-b821-4f25-bb0c-943c1f086616/bin/utaipan-9zjyvhn0QE/data/32d3f35c1/7924975b457642ab9e3c12c17fd3a49c/FLAG0e082fed7 [2021-10-24 10:53:41,713 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7304486b-b821-4f25-bb0c-943c1f086616/bin/utaipan-9zjyvhn0QE/data/32d3f35c1/7924975b457642ab9e3c12c17fd3a49c [2021-10-24 10:53:41,726 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 10:53:41,729 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 10:53:41,732 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 10:53:41,733 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 10:53:41,737 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 10:53:41,738 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:53:41" (1/1) ... [2021-10-24 10:53:41,741 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72da194e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:53:41, skipping insertion in model container [2021-10-24 10:53:41,742 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:53:41" (1/1) ... [2021-10-24 10:53:41,751 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 10:53:41,839 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 10:53:42,412 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:53:42,434 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-24 10:53:42,447 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 10:53:42,551 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:53:42,562 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 10:53:42,623 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:53:42,720 INFO L208 MainTranslator]: Completed translation [2021-10-24 10:53:42,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:53:42 WrapperNode [2021-10-24 10:53:42,721 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 10:53:42,722 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 10:53:42,722 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 10:53:42,723 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 10:53:42,732 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:53:42" (1/1) ... [2021-10-24 10:53:42,768 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:53:42" (1/1) ... [2021-10-24 10:53:42,816 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 10:53:42,817 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 10:53:42,817 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 10:53:42,818 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 10:53:42,828 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:53:42" (1/1) ... [2021-10-24 10:53:42,829 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:53:42" (1/1) ... [2021-10-24 10:53:42,833 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:53:42" (1/1) ... [2021-10-24 10:53:42,833 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:53:42" (1/1) ... [2021-10-24 10:53:42,841 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:53:42" (1/1) ... [2021-10-24 10:53:42,843 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:53:42" (1/1) ... [2021-10-24 10:53:42,849 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:53:42" (1/1) ... [2021-10-24 10:53:42,854 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 10:53:42,855 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 10:53:42,866 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 10:53:42,866 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 10:53:42,869 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:53:42" (1/1) ... [2021-10-24 10:53:42,875 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:53:42,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7304486b-b821-4f25-bb0c-943c1f086616/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:53:42,899 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7304486b-b821-4f25-bb0c-943c1f086616/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 10:53:42,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7304486b-b821-4f25-bb0c-943c1f086616/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 10:53:42,949 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-24 10:53:42,949 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 10:53:42,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-24 10:53:42,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-10-24 10:53:42,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 10:53:42,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 10:53:43,379 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 10:53:43,383 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-24 10:53:43,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:53:43 BoogieIcfgContainer [2021-10-24 10:53:43,386 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 10:53:43,389 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 10:53:43,389 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 10:53:43,392 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 10:53:43,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:53:41" (1/3) ... [2021-10-24 10:53:43,394 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6168bae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:53:43, skipping insertion in model container [2021-10-24 10:53:43,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:53:42" (2/3) ... [2021-10-24 10:53:43,396 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6168bae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:53:43, skipping insertion in model container [2021-10-24 10:53:43,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:53:43" (3/3) ... [2021-10-24 10:53:43,398 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test4-1.i [2021-10-24 10:53:43,404 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 10:53:43,405 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-10-24 10:53:43,472 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 10:53:43,480 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-24 10:53:43,481 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-24 10:53:43,498 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 16 states have internal predecessors, (19), 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) [2021-10-24 10:53:43,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-24 10:53:43,523 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:53:43,523 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-24 10:53:43,524 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-10-24 10:53:43,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:53:43,531 INFO L82 PathProgramCache]: Analyzing trace with hash 889509194, now seen corresponding path program 1 times [2021-10-24 10:53:43,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:53:43,546 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1416360786] [2021-10-24 10:53:43,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:53:43,547 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:53:43,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7304486b-b821-4f25-bb0c-943c1f086616/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:53:43,554 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7304486b-b821-4f25-bb0c-943c1f086616/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:53:43,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7304486b-b821-4f25-bb0c-943c1f086616/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-24 10:53:43,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:53:43,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-24 10:53:43,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:53:43,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:53:43,746 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:53:43,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:53:43,772 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:53:43,773 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1416360786] [2021-10-24 10:53:43,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1416360786] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:53:43,774 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:53:43,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-24 10:53:43,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255051326] [2021-10-24 10:53:43,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 10:53:43,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:53:43,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 10:53:43,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-24 10:53:43,802 INFO L87 Difference]: Start difference. First operand has 17 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 16 states have internal predecessors, (19), 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, 4 states have (on average 1.5) 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) [2021-10-24 10:53:43,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:53:43,894 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2021-10-24 10:53:43,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-24 10:53:43,896 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) 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 [2021-10-24 10:53:43,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:53:43,907 INFO L225 Difference]: With dead ends: 53 [2021-10-24 10:53:43,907 INFO L226 Difference]: Without dead ends: 45 [2021-10-24 10:53:43,909 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:53:43,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-10-24 10:53:43,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 17. [2021-10-24 10:53:43,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 16 states have internal predecessors, (19), 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) [2021-10-24 10:53:43,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2021-10-24 10:53:43,951 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 6 [2021-10-24 10:53:43,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:53:43,952 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-10-24 10:53:43,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) 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) [2021-10-24 10:53:43,953 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2021-10-24 10:53:43,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-24 10:53:43,954 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:53:43,954 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-24 10:53:43,971 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7304486b-b821-4f25-bb0c-943c1f086616/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-24 10:53:44,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7304486b-b821-4f25-bb0c-943c1f086616/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:53:44,168 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-10-24 10:53:44,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:53:44,169 INFO L82 PathProgramCache]: Analyzing trace with hash 889568776, now seen corresponding path program 1 times [2021-10-24 10:53:44,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:53:44,170 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1434606735] [2021-10-24 10:53:44,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:53:44,170 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:53:44,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7304486b-b821-4f25-bb0c-943c1f086616/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:53:44,171 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7304486b-b821-4f25-bb0c-943c1f086616/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:53:44,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7304486b-b821-4f25-bb0c-943c1f086616/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-24 10:53:44,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:53:44,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-24 10:53:44,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:53:44,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:53:44,332 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:53:44,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:53:44,367 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:53:44,367 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1434606735] [2021-10-24 10:53:44,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1434606735] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:53:44,368 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:53:44,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-24 10:53:44,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406352714] [2021-10-24 10:53:44,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 10:53:44,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:53:44,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 10:53:44,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:53:44,371 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:53:44,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:53:44,404 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2021-10-24 10:53:44,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 10:53:44,405 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-24 10:53:44,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:53:44,406 INFO L225 Difference]: With dead ends: 26 [2021-10-24 10:53:44,407 INFO L226 Difference]: Without dead ends: 25 [2021-10-24 10:53:44,407 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:53:44,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-10-24 10:53:44,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 15. [2021-10-24 10:53:44,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 14 states have internal predecessors, (16), 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) [2021-10-24 10:53:44,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2021-10-24 10:53:44,411 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 6 [2021-10-24 10:53:44,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:53:44,411 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2021-10-24 10:53:44,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:53:44,412 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2021-10-24 10:53:44,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-24 10:53:44,412 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:53:44,413 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:53:44,430 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7304486b-b821-4f25-bb0c-943c1f086616/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-10-24 10:53:44,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7304486b-b821-4f25-bb0c-943c1f086616/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:53:44,630 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-10-24 10:53:44,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:53:44,631 INFO L82 PathProgramCache]: Analyzing trace with hash 119384781, now seen corresponding path program 1 times [2021-10-24 10:53:44,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:53:44,632 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1631485693] [2021-10-24 10:53:44,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:53:44,633 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:53:44,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7304486b-b821-4f25-bb0c-943c1f086616/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:53:44,634 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7304486b-b821-4f25-bb0c-943c1f086616/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:53:44,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7304486b-b821-4f25-bb0c-943c1f086616/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-24 10:53:44,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:53:44,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-24 10:53:44,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:53:44,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:53:44,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:53:44,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:53:44,833 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:53:44,833 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1631485693] [2021-10-24 10:53:44,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1631485693] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:53:44,833 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:53:44,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-24 10:53:44,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279903267] [2021-10-24 10:53:44,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 10:53:44,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:53:44,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 10:53:44,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-24 10:53:44,836 INFO L87 Difference]: Start difference. First operand 15 states and 16 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) [2021-10-24 10:53:44,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:53:44,873 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2021-10-24 10:53:44,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 10:53:44,874 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 [2021-10-24 10:53:44,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:53:44,877 INFO L225 Difference]: With dead ends: 14 [2021-10-24 10:53:44,877 INFO L226 Difference]: Without dead ends: 14 [2021-10-24 10:53:44,877 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:53:44,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-10-24 10:53:44,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-10-24 10:53:44,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 13 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) [2021-10-24 10:53:44,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2021-10-24 10:53:44,883 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 8 [2021-10-24 10:53:44,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:53:44,884 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2021-10-24 10:53:44,884 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) [2021-10-24 10:53:44,884 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2021-10-24 10:53:44,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-24 10:53:44,885 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:53:44,885 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:53:44,902 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7304486b-b821-4f25-bb0c-943c1f086616/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-24 10:53:45,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7304486b-b821-4f25-bb0c-943c1f086616/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:53:45,099 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-10-24 10:53:45,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:53:45,100 INFO L82 PathProgramCache]: Analyzing trace with hash -594039032, now seen corresponding path program 1 times [2021-10-24 10:53:45,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:53:45,101 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [998833083] [2021-10-24 10:53:45,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:53:45,101 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:53:45,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7304486b-b821-4f25-bb0c-943c1f086616/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:53:45,102 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7304486b-b821-4f25-bb0c-943c1f086616/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:53:45,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7304486b-b821-4f25-bb0c-943c1f086616/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-24 10:53:45,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:53:45,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-24 10:53:45,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:53:45,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:53:45,279 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:53:45,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:53:45,350 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:53:45,350 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [998833083] [2021-10-24 10:53:45,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [998833083] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:53:45,351 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:53:45,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-24 10:53:45,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743532529] [2021-10-24 10:53:45,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-24 10:53:45,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:53:45,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-24 10:53:45,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-24 10:53:45,353 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 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) [2021-10-24 10:53:45,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:53:45,455 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2021-10-24 10:53:45,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-24 10:53:45,456 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 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 9 [2021-10-24 10:53:45,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:53:45,457 INFO L225 Difference]: With dead ends: 21 [2021-10-24 10:53:45,457 INFO L226 Difference]: Without dead ends: 21 [2021-10-24 10:53:45,457 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 76.3ms TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-10-24 10:53:45,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-10-24 10:53:45,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 17. [2021-10-24 10:53:45,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 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) [2021-10-24 10:53:45,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2021-10-24 10:53:45,462 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 9 [2021-10-24 10:53:45,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:53:45,462 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2021-10-24 10:53:45,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 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) [2021-10-24 10:53:45,463 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2021-10-24 10:53:45,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-24 10:53:45,463 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:53:45,464 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:53:45,478 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7304486b-b821-4f25-bb0c-943c1f086616/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-24 10:53:45,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7304486b-b821-4f25-bb0c-943c1f086616/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:53:45,674 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-10-24 10:53:45,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:53:45,675 INFO L82 PathProgramCache]: Analyzing trace with hash -1237187795, now seen corresponding path program 1 times [2021-10-24 10:53:45,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:53:45,676 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [773329479] [2021-10-24 10:53:45,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:53:45,676 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:53:45,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7304486b-b821-4f25-bb0c-943c1f086616/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:53:45,682 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7304486b-b821-4f25-bb0c-943c1f086616/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:53:45,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7304486b-b821-4f25-bb0c-943c1f086616/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-24 10:53:45,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:53:45,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-24 10:53:45,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:53:45,830 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 [2021-10-24 10:53:45,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:53:45,884 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:53:45,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:53:45,948 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:53:45,950 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [773329479] [2021-10-24 10:53:45,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [773329479] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:53:45,951 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:53:45,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-24 10:53:45,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410777163] [2021-10-24 10:53:45,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 10:53:45,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:53:45,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 10:53:45,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-24 10:53:45,953 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 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) [2021-10-24 10:53:46,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:53:46,018 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2021-10-24 10:53:46,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 10:53:46,019 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 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 10 [2021-10-24 10:53:46,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:53:46,021 INFO L225 Difference]: With dead ends: 18 [2021-10-24 10:53:46,021 INFO L226 Difference]: Without dead ends: 18 [2021-10-24 10:53:46,022 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:53:46,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-10-24 10:53:46,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 12. [2021-10-24 10:53:46,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 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) [2021-10-24 10:53:46,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2021-10-24 10:53:46,028 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 10 [2021-10-24 10:53:46,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:53:46,029 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2021-10-24 10:53:46,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 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) [2021-10-24 10:53:46,029 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2021-10-24 10:53:46,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-24 10:53:46,030 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:53:46,030 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:53:46,041 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7304486b-b821-4f25-bb0c-943c1f086616/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-24 10:53:46,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7304486b-b821-4f25-bb0c-943c1f086616/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:53:46,231 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-10-24 10:53:46,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:53:46,232 INFO L82 PathProgramCache]: Analyzing trace with hash 359142382, now seen corresponding path program 1 times [2021-10-24 10:53:46,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:53:46,232 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [157026551] [2021-10-24 10:53:46,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:53:46,233 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:53:46,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7304486b-b821-4f25-bb0c-943c1f086616/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:53:46,238 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7304486b-b821-4f25-bb0c-943c1f086616/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:53:46,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7304486b-b821-4f25-bb0c-943c1f086616/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-24 10:53:46,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 10:53:46,334 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-24 10:53:46,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 10:53:46,410 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-24 10:53:46,424 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-24 10:53:46,426 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK [2021-10-24 10:53:46,428 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE [2021-10-24 10:53:46,428 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE [2021-10-24 10:53:46,429 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE [2021-10-24 10:53:46,446 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7304486b-b821-4f25-bb0c-943c1f086616/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-24 10:53:46,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7304486b-b821-4f25-bb0c-943c1f086616/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:53:46,647 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 10:53:46,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:53:46 BoogieIcfgContainer [2021-10-24 10:53:46,669 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 10:53:46,670 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 10:53:46,670 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 10:53:46,670 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 10:53:46,671 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:53:43" (3/4) ... [2021-10-24 10:53:46,675 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-24 10:53:46,676 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 10:53:46,678 INFO L168 Benchmark]: Toolchain (without parser) took 4947.18 ms. Allocated memory was 58.7 MB in the beginning and 77.6 MB in the end (delta: 18.9 MB). Free memory was 36.9 MB in the beginning and 56.4 MB in the end (delta: -19.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:53:46,678 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 58.7 MB. Free memory is still 39.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:53:46,679 INFO L168 Benchmark]: CACSL2BoogieTranslator took 988.91 ms. Allocated memory was 58.7 MB in the beginning and 77.6 MB in the end (delta: 18.9 MB). Free memory was 36.8 MB in the beginning and 57.4 MB in the end (delta: -20.6 MB). Peak memory consumption was 14.5 MB. Max. memory is 16.1 GB. [2021-10-24 10:53:46,680 INFO L168 Benchmark]: Boogie Procedure Inliner took 93.94 ms. Allocated memory is still 77.6 MB. Free memory was 57.4 MB in the beginning and 55.1 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:53:46,680 INFO L168 Benchmark]: Boogie Preprocessor took 36.99 ms. Allocated memory is still 77.6 MB. Free memory was 55.1 MB in the beginning and 54.2 MB in the end (delta: 988.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:53:46,681 INFO L168 Benchmark]: RCFGBuilder took 531.15 ms. Allocated memory is still 77.6 MB. Free memory was 53.8 MB in the beginning and 43.4 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-24 10:53:46,682 INFO L168 Benchmark]: TraceAbstraction took 3280.41 ms. Allocated memory is still 77.6 MB. Free memory was 43.0 MB in the beginning and 56.7 MB in the end (delta: -13.7 MB). Peak memory consumption was 17.3 MB. Max. memory is 16.1 GB. [2021-10-24 10:53:46,682 INFO L168 Benchmark]: Witness Printer took 6.23 ms. Allocated memory is still 77.6 MB. Free memory was 56.7 MB in the beginning and 56.4 MB in the end (delta: 270.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:53:46,686 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 58.7 MB. Free memory is still 39.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 988.91 ms. Allocated memory was 58.7 MB in the beginning and 77.6 MB in the end (delta: 18.9 MB). Free memory was 36.8 MB in the beginning and 57.4 MB in the end (delta: -20.6 MB). Peak memory consumption was 14.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 93.94 ms. Allocated memory is still 77.6 MB. Free memory was 57.4 MB in the beginning and 55.1 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 36.99 ms. Allocated memory is still 77.6 MB. Free memory was 55.1 MB in the beginning and 54.2 MB in the end (delta: 988.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 531.15 ms. Allocated memory is still 77.6 MB. Free memory was 53.8 MB in the beginning and 43.4 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3280.41 ms. Allocated memory is still 77.6 MB. Free memory was 43.0 MB in the beginning and 56.7 MB in the end (delta: -13.7 MB). Peak memory consumption was 17.3 MB. Max. memory is 16.1 GB. * Witness Printer took 6.23 ms. Allocated memory is still 77.6 MB. Free memory was 56.7 MB in the beginning and 56.4 MB in the end (delta: 270.7 kB). There was no memory consumed. 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 - UnprovableResult [Line: 764]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 764. Possible FailurePath: [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; VAL [ldv_global_msg_list={-2147483648:0}] [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L758] int *p = (int *)ldv_malloc(sizeof(int)); [L759] COND TRUE \read(*p) [L526] COND FALSE !(__VERIFIER_nondet_int()) [L529] return 0; VAL [ldv_global_msg_list={-2147483648:0}] [L760] int *q = (int *)ldv_malloc(sizeof(int)); [L761] free(q) VAL [ldv_global_msg_list={-2147483648:0}] [L761] free(q) VAL [ldv_global_msg_list={-2147483648:0}] [L761] free(q) - UnprovableResult [Line: 761]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 761]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 761]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 3175.4ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 32.6ms, AutomataDifference: 381.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 12.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 86 SDtfs, 96 SDslu, 67 SDs, 0 SdLazy, 90 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 172.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 73 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 152.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, InterpolantAutomatonStates: 23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 44.1ms AutomataMinimizationTime, 5 MinimizatonAttempts, 48 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 64.5ms SsaConstructionTime, 120.5ms SatisfiabilityAnalysisTime, 672.0ms InterpolantComputationTime, 50 NumberOfCodeBlocks, 50 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 68 ConstructedInterpolants, 0 QuantifiedInterpolants, 204 SizeOfPredicates, 4 NumberOfNonLiveVariables, 177 ConjunctsInSsa, 15 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 could not prove your program: unable to determine feasibility of some traces [2021-10-24 10:53:46,751 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7304486b-b821-4f25-bb0c-943c1f086616/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...