./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_09495175-7f96-4a97-aae7-a9d15895a5b4/bin/utaipan-tZwUujhuQw/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09495175-7f96-4a97-aae7-a9d15895a5b4/bin/utaipan-tZwUujhuQw/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09495175-7f96-4a97-aae7-a9d15895a5b4/bin/utaipan-tZwUujhuQw/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09495175-7f96-4a97-aae7-a9d15895a5b4/bin/utaipan-tZwUujhuQw/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test4-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09495175-7f96-4a97-aae7-a9d15895a5b4/bin/utaipan-tZwUujhuQw/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09495175-7f96-4a97-aae7-a9d15895a5b4/bin/utaipan-tZwUujhuQw --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_09495175-7f96-4a97-aae7-a9d15895a5b4/bin/utaipan-tZwUujhuQw/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09495175-7f96-4a97-aae7-a9d15895a5b4/bin/utaipan-tZwUujhuQw/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09495175-7f96-4a97-aae7-a9d15895a5b4/bin/utaipan-tZwUujhuQw/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09495175-7f96-4a97-aae7-a9d15895a5b4/bin/utaipan-tZwUujhuQw/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test4-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09495175-7f96-4a97-aae7-a9d15895a5b4/bin/utaipan-tZwUujhuQw/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09495175-7f96-4a97-aae7-a9d15895a5b4/bin/utaipan-tZwUujhuQw --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 [2021-10-20 05:43:07,954 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-20 05:43:07,956 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-20 05:43:07,993 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-20 05:43:07,994 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-20 05:43:07,995 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-20 05:43:07,998 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-20 05:43:08,000 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-20 05:43:08,003 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-20 05:43:08,005 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-20 05:43:08,006 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-20 05:43:08,008 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-20 05:43:08,009 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-20 05:43:08,010 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-20 05:43:08,012 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-20 05:43:08,014 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-20 05:43:08,015 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-20 05:43:08,016 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-20 05:43:08,019 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-20 05:43:08,025 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-20 05:43:08,030 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-20 05:43:08,031 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-20 05:43:08,033 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-20 05:43:08,035 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-20 05:43:08,043 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-20 05:43:08,048 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-20 05:43:08,048 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-20 05:43:08,050 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-20 05:43:08,051 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-20 05:43:08,052 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-20 05:43:08,054 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-20 05:43:08,055 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-20 05:43:08,057 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-20 05:43:08,059 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-20 05:43:08,060 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-20 05:43:08,061 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-20 05:43:08,062 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-20 05:43:08,062 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-20 05:43:08,062 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-20 05:43:08,064 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-20 05:43:08,065 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-20 05:43:08,066 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09495175-7f96-4a97-aae7-a9d15895a5b4/bin/utaipan-tZwUujhuQw/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-10-20 05:43:08,114 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-20 05:43:08,114 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-20 05:43:08,115 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-20 05:43:08,115 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-20 05:43:08,116 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-20 05:43:08,116 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-20 05:43:08,116 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-20 05:43:08,116 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-20 05:43:08,117 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-20 05:43:08,117 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-20 05:43:08,117 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-20 05:43:08,117 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-20 05:43:08,118 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-20 05:43:08,118 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-20 05:43:08,118 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-20 05:43:08,119 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-20 05:43:08,119 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-20 05:43:08,120 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-20 05:43:08,120 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-20 05:43:08,120 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-20 05:43:08,120 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-20 05:43:08,121 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-20 05:43:08,121 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-20 05:43:08,121 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-20 05:43:08,122 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-20 05:43:08,122 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-20 05:43:08,129 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-20 05:43:08,129 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-20 05:43:08,129 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-20 05:43:08,130 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-20 05:43:08,130 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-20 05:43:08,130 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-20 05:43:08,130 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 05:43:08,131 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-20 05:43:08,131 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-20 05:43:08,131 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-20 05:43:08,131 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-20 05:43:08,132 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-20 05:43:08,132 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-20 05:43:08,132 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_09495175-7f96-4a97-aae7-a9d15895a5b4/bin/utaipan-tZwUujhuQw/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09495175-7f96-4a97-aae7-a9d15895a5b4/bin/utaipan-tZwUujhuQw Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9bd23263f414c48e50ed8daa5b2985179bde28a9902b6873b1962b90b4067acc [2021-10-20 05:43:08,426 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-20 05:43:08,455 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-20 05:43:08,458 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-20 05:43:08,459 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-20 05:43:08,460 INFO L275 PluginConnector]: CDTParser initialized [2021-10-20 05:43:08,461 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09495175-7f96-4a97-aae7-a9d15895a5b4/bin/utaipan-tZwUujhuQw/../../sv-benchmarks/c/ldv-memsafety/memleaks_test4-1.i [2021-10-20 05:43:08,535 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09495175-7f96-4a97-aae7-a9d15895a5b4/bin/utaipan-tZwUujhuQw/data/96179469d/5c19cecf3bf34aaebfae0346505b907a/FLAG022ccd7c6 [2021-10-20 05:43:09,230 INFO L306 CDTParser]: Found 1 translation units. [2021-10-20 05:43:09,231 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09495175-7f96-4a97-aae7-a9d15895a5b4/sv-benchmarks/c/ldv-memsafety/memleaks_test4-1.i [2021-10-20 05:43:09,246 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09495175-7f96-4a97-aae7-a9d15895a5b4/bin/utaipan-tZwUujhuQw/data/96179469d/5c19cecf3bf34aaebfae0346505b907a/FLAG022ccd7c6 [2021-10-20 05:43:09,430 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09495175-7f96-4a97-aae7-a9d15895a5b4/bin/utaipan-tZwUujhuQw/data/96179469d/5c19cecf3bf34aaebfae0346505b907a [2021-10-20 05:43:09,435 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-20 05:43:09,438 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-20 05:43:09,441 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-20 05:43:09,441 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-20 05:43:09,445 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-20 05:43:09,446 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:43:09" (1/1) ... [2021-10-20 05:43:09,448 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52b1fe36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:43:09, skipping insertion in model container [2021-10-20 05:43:09,448 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:43:09" (1/1) ... [2021-10-20 05:43:09,456 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-20 05:43:09,530 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-20 05:43:09,968 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 05:43:09,986 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) [2021-10-20 05:43:09,987 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3ae6ee60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:43:09, skipping insertion in model container [2021-10-20 05:43:09,987 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-20 05:43:09,987 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-20 05:43:09,990 INFO L168 Benchmark]: Toolchain (without parser) took 550.04 ms. Allocated memory is still 102.8 MB. Free memory was 77.5 MB in the beginning and 64.5 MB in the end (delta: 13.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-20 05:43:09,991 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 83.9 MB. Free memory was 57.5 MB in the beginning and 57.5 MB in the end (delta: 40.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 05:43:09,991 INFO L168 Benchmark]: CACSL2BoogieTranslator took 546.37 ms. Allocated memory is still 102.8 MB. Free memory was 77.3 MB in the beginning and 64.5 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-20 05:43:09,993 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 83.9 MB. Free memory was 57.5 MB in the beginning and 57.5 MB in the end (delta: 40.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 546.37 ms. Allocated memory is still 102.8 MB. Free memory was 77.3 MB in the beginning and 64.5 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 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 [2021-10-20 05:43:12,213 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-20 05:43:12,215 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-20 05:43:12,244 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-20 05:43:12,245 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-20 05:43:12,246 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-20 05:43:12,248 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-20 05:43:12,250 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-20 05:43:12,253 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-20 05:43:12,254 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-20 05:43:12,255 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-20 05:43:12,257 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-20 05:43:12,257 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-20 05:43:12,258 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-20 05:43:12,260 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-20 05:43:12,261 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-20 05:43:12,263 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-20 05:43:12,264 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-20 05:43:12,266 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-20 05:43:12,268 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-20 05:43:12,274 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-20 05:43:12,279 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-20 05:43:12,281 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-20 05:43:12,282 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-20 05:43:12,285 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-20 05:43:12,286 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-20 05:43:12,286 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-20 05:43:12,287 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-20 05:43:12,288 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-20 05:43:12,289 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-20 05:43:12,289 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-20 05:43:12,290 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-20 05:43:12,291 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-20 05:43:12,292 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-20 05:43:12,293 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-20 05:43:12,293 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-20 05:43:12,294 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-20 05:43:12,294 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-20 05:43:12,295 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-20 05:43:12,296 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-20 05:43:12,296 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-20 05:43:12,297 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09495175-7f96-4a97-aae7-a9d15895a5b4/bin/utaipan-tZwUujhuQw/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-10-20 05:43:12,336 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-20 05:43:12,336 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-20 05:43:12,337 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-20 05:43:12,338 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-20 05:43:12,338 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-20 05:43:12,338 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-20 05:43:12,338 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-20 05:43:12,338 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-20 05:43:12,339 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-20 05:43:12,340 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-20 05:43:12,341 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-20 05:43:12,342 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-20 05:43:12,342 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-20 05:43:12,342 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-20 05:43:12,342 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-20 05:43:12,342 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-20 05:43:12,343 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-20 05:43:12,343 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-20 05:43:12,343 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-20 05:43:12,343 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-20 05:43:12,343 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-20 05:43:12,344 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-20 05:43:12,344 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-20 05:43:12,344 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-20 05:43:12,344 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-20 05:43:12,344 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-20 05:43:12,345 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-20 05:43:12,345 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-20 05:43:12,345 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-20 05:43:12,345 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 05:43:12,345 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-20 05:43:12,346 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-20 05:43:12,346 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-20 05:43:12,346 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-20 05:43:12,346 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-20 05:43:12,347 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-20 05:43:12,347 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_09495175-7f96-4a97-aae7-a9d15895a5b4/bin/utaipan-tZwUujhuQw/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09495175-7f96-4a97-aae7-a9d15895a5b4/bin/utaipan-tZwUujhuQw Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9bd23263f414c48e50ed8daa5b2985179bde28a9902b6873b1962b90b4067acc [2021-10-20 05:43:12,729 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-20 05:43:12,752 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-20 05:43:12,755 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-20 05:43:12,756 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-20 05:43:12,757 INFO L275 PluginConnector]: CDTParser initialized [2021-10-20 05:43:12,758 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09495175-7f96-4a97-aae7-a9d15895a5b4/bin/utaipan-tZwUujhuQw/../../sv-benchmarks/c/ldv-memsafety/memleaks_test4-1.i [2021-10-20 05:43:12,838 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09495175-7f96-4a97-aae7-a9d15895a5b4/bin/utaipan-tZwUujhuQw/data/897fdafc8/6fc41b79d1b746f68554f7aecc387333/FLAG97b7df96b [2021-10-20 05:43:13,452 INFO L306 CDTParser]: Found 1 translation units. [2021-10-20 05:43:13,453 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09495175-7f96-4a97-aae7-a9d15895a5b4/sv-benchmarks/c/ldv-memsafety/memleaks_test4-1.i [2021-10-20 05:43:13,475 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09495175-7f96-4a97-aae7-a9d15895a5b4/bin/utaipan-tZwUujhuQw/data/897fdafc8/6fc41b79d1b746f68554f7aecc387333/FLAG97b7df96b [2021-10-20 05:43:13,684 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09495175-7f96-4a97-aae7-a9d15895a5b4/bin/utaipan-tZwUujhuQw/data/897fdafc8/6fc41b79d1b746f68554f7aecc387333 [2021-10-20 05:43:13,691 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-20 05:43:13,694 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-20 05:43:13,697 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-20 05:43:13,697 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-20 05:43:13,701 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-20 05:43:13,701 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:43:13" (1/1) ... [2021-10-20 05:43:13,703 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f3051c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:43:13, skipping insertion in model container [2021-10-20 05:43:13,704 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:43:13" (1/1) ... [2021-10-20 05:43:13,711 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-20 05:43:13,778 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-20 05:43:14,306 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 05:43:14,324 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-20 05:43:14,334 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-20 05:43:14,396 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 05:43:14,412 INFO L203 MainTranslator]: Completed pre-run [2021-10-20 05:43:14,463 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 05:43:14,523 INFO L208 MainTranslator]: Completed translation [2021-10-20 05:43:14,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:43:14 WrapperNode [2021-10-20 05:43:14,523 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-20 05:43:14,525 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-20 05:43:14,525 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-20 05:43:14,525 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-20 05:43:14,532 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:43:14" (1/1) ... [2021-10-20 05:43:14,559 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:43:14" (1/1) ... [2021-10-20 05:43:14,588 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-20 05:43:14,589 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-20 05:43:14,590 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-20 05:43:14,590 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-20 05:43:14,596 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:43:14" (1/1) ... [2021-10-20 05:43:14,597 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:43:14" (1/1) ... [2021-10-20 05:43:14,601 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:43:14" (1/1) ... [2021-10-20 05:43:14,602 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:43:14" (1/1) ... [2021-10-20 05:43:14,610 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:43:14" (1/1) ... [2021-10-20 05:43:14,612 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:43:14" (1/1) ... [2021-10-20 05:43:14,614 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:43:14" (1/1) ... [2021-10-20 05:43:14,617 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-20 05:43:14,618 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-20 05:43:14,618 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-20 05:43:14,619 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-20 05:43:14,619 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:43:14" (1/1) ... [2021-10-20 05:43:14,627 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 05:43:14,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09495175-7f96-4a97-aae7-a9d15895a5b4/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 05:43:14,652 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09495175-7f96-4a97-aae7-a9d15895a5b4/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-20 05:43:14,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09495175-7f96-4a97-aae7-a9d15895a5b4/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-20 05:43:14,692 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-20 05:43:14,692 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-20 05:43:14,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-20 05:43:14,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-10-20 05:43:14,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-20 05:43:14,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-20 05:43:15,060 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-20 05:43:15,066 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-20 05:43:15,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:43:15 BoogieIcfgContainer [2021-10-20 05:43:15,070 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-20 05:43:15,072 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-20 05:43:15,072 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-20 05:43:15,076 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-20 05:43:15,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 05:43:13" (1/3) ... [2021-10-20 05:43:15,077 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a3c2cb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:43:15, skipping insertion in model container [2021-10-20 05:43:15,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:43:14" (2/3) ... [2021-10-20 05:43:15,079 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a3c2cb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:43:15, skipping insertion in model container [2021-10-20 05:43:15,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:43:15" (3/3) ... [2021-10-20 05:43:15,080 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test4-1.i [2021-10-20 05:43:15,086 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-20 05:43:15,086 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-10-20 05:43:15,144 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-20 05:43:15,151 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 [2021-10-20 05:43:15,151 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-20 05:43:15,167 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) [2021-10-20 05:43:15,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-20 05:43:15,173 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:43:15,174 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-20 05:43:15,174 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)] === [2021-10-20 05:43:15,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:43:15,181 INFO L82 PathProgramCache]: Analyzing trace with hash 889509194, now seen corresponding path program 1 times [2021-10-20 05:43:15,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 05:43:15,193 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1899205630] [2021-10-20 05:43:15,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:43:15,195 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 05:43:15,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09495175-7f96-4a97-aae7-a9d15895a5b4/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 05:43:15,202 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09495175-7f96-4a97-aae7-a9d15895a5b4/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 05:43:15,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09495175-7f96-4a97-aae7-a9d15895a5b4/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-20 05:43:15,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:43:15,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-20 05:43:15,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:43:15,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:43:15,399 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:43:15,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:43:15,440 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 05:43:15,440 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1899205630] [2021-10-20 05:43:15,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1899205630] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 05:43:15,441 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:43:15,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-20 05:43:15,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934633401] [2021-10-20 05:43:15,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-20 05:43:15,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 05:43:15,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-20 05:43:15,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-20 05:43:15,469 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) [2021-10-20 05:43:15,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:43:15,543 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2021-10-20 05:43:15,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-20 05:43:15,544 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 [2021-10-20 05:43:15,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:43:15,553 INFO L225 Difference]: With dead ends: 53 [2021-10-20 05:43:15,554 INFO L226 Difference]: Without dead ends: 45 [2021-10-20 05:43:15,555 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-20 05:43:15,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-10-20 05:43:15,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 17. [2021-10-20 05:43:15,590 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) [2021-10-20 05:43:15,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2021-10-20 05:43:15,593 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 6 [2021-10-20 05:43:15,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:43:15,594 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-10-20 05:43:15,595 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) [2021-10-20 05:43:15,595 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2021-10-20 05:43:15,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-20 05:43:15,596 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:43:15,596 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-20 05:43:15,611 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09495175-7f96-4a97-aae7-a9d15895a5b4/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-20 05:43:15,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09495175-7f96-4a97-aae7-a9d15895a5b4/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 05:43:15,812 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)] === [2021-10-20 05:43:15,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:43:15,812 INFO L82 PathProgramCache]: Analyzing trace with hash 889568776, now seen corresponding path program 1 times [2021-10-20 05:43:15,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 05:43:15,813 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [379479910] [2021-10-20 05:43:15,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:43:15,814 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 05:43:15,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09495175-7f96-4a97-aae7-a9d15895a5b4/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 05:43:15,815 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09495175-7f96-4a97-aae7-a9d15895a5b4/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 05:43:15,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09495175-7f96-4a97-aae7-a9d15895a5b4/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-20 05:43:15,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:43:15,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-20 05:43:15,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:43:15,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:43:15,885 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:43:15,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:43:15,904 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 05:43:15,904 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [379479910] [2021-10-20 05:43:15,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [379479910] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 05:43:15,905 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:43:15,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-20 05:43:15,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274648259] [2021-10-20 05:43:15,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-20 05:43:15,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 05:43:15,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-20 05:43:15,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 05:43:15,908 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) [2021-10-20 05:43:15,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:43:15,932 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2021-10-20 05:43:15,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-20 05:43:15,932 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 [2021-10-20 05:43:15,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:43:15,933 INFO L225 Difference]: With dead ends: 26 [2021-10-20 05:43:15,933 INFO L226 Difference]: Without dead ends: 25 [2021-10-20 05:43:15,934 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 05:43:15,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-10-20 05:43:15,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 15. [2021-10-20 05:43:15,937 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) [2021-10-20 05:43:15,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2021-10-20 05:43:15,937 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 6 [2021-10-20 05:43:15,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:43:15,938 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2021-10-20 05:43:15,938 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) [2021-10-20 05:43:15,938 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2021-10-20 05:43:15,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-20 05:43:15,939 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:43:15,939 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:43:15,953 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09495175-7f96-4a97-aae7-a9d15895a5b4/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-20 05:43:16,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09495175-7f96-4a97-aae7-a9d15895a5b4/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 05:43:16,150 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)] === [2021-10-20 05:43:16,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:43:16,151 INFO L82 PathProgramCache]: Analyzing trace with hash 119384781, now seen corresponding path program 1 times [2021-10-20 05:43:16,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 05:43:16,152 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1911242481] [2021-10-20 05:43:16,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:43:16,152 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 05:43:16,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09495175-7f96-4a97-aae7-a9d15895a5b4/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 05:43:16,158 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09495175-7f96-4a97-aae7-a9d15895a5b4/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 05:43:16,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09495175-7f96-4a97-aae7-a9d15895a5b4/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-20 05:43:16,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:43:16,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-20 05:43:16,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:43:16,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:43:16,280 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:43:16,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:43:16,308 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 05:43:16,308 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1911242481] [2021-10-20 05:43:16,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1911242481] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 05:43:16,309 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:43:16,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-20 05:43:16,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883931953] [2021-10-20 05:43:16,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-20 05:43:16,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 05:43:16,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-20 05:43:16,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-20 05:43:16,313 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) [2021-10-20 05:43:16,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:43:16,344 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2021-10-20 05:43:16,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-20 05:43:16,345 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 [2021-10-20 05:43:16,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:43:16,345 INFO L225 Difference]: With dead ends: 14 [2021-10-20 05:43:16,346 INFO L226 Difference]: Without dead ends: 14 [2021-10-20 05:43:16,346 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-20 05:43:16,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-10-20 05:43:16,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-10-20 05:43:16,352 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) [2021-10-20 05:43:16,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2021-10-20 05:43:16,352 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 8 [2021-10-20 05:43:16,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:43:16,353 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2021-10-20 05:43:16,353 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) [2021-10-20 05:43:16,353 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2021-10-20 05:43:16,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-20 05:43:16,354 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:43:16,354 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:43:16,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09495175-7f96-4a97-aae7-a9d15895a5b4/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-20 05:43:16,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09495175-7f96-4a97-aae7-a9d15895a5b4/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 05:43:16,567 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)] === [2021-10-20 05:43:16,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:43:16,568 INFO L82 PathProgramCache]: Analyzing trace with hash -594039032, now seen corresponding path program 1 times [2021-10-20 05:43:16,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 05:43:16,568 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1102588672] [2021-10-20 05:43:16,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:43:16,569 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 05:43:16,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09495175-7f96-4a97-aae7-a9d15895a5b4/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 05:43:16,570 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09495175-7f96-4a97-aae7-a9d15895a5b4/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 05:43:16,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09495175-7f96-4a97-aae7-a9d15895a5b4/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-20 05:43:16,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:43:16,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-20 05:43:16,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:43:16,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:43:16,740 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:43:16,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:43:16,793 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 05:43:16,794 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1102588672] [2021-10-20 05:43:16,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1102588672] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 05:43:16,794 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:43:16,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-20 05:43:16,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933855977] [2021-10-20 05:43:16,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-20 05:43:16,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 05:43:16,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-20 05:43:16,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-20 05:43:16,796 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) [2021-10-20 05:43:16,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:43:16,888 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2021-10-20 05:43:16,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-20 05:43:16,889 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 [2021-10-20 05:43:16,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:43:16,891 INFO L225 Difference]: With dead ends: 21 [2021-10-20 05:43:16,891 INFO L226 Difference]: Without dead ends: 21 [2021-10-20 05:43:16,893 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 73.5ms TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-10-20 05:43:16,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-10-20 05:43:16,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 17. [2021-10-20 05:43:16,897 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) [2021-10-20 05:43:16,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2021-10-20 05:43:16,898 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 9 [2021-10-20 05:43:16,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:43:16,899 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2021-10-20 05:43:16,899 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) [2021-10-20 05:43:16,900 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2021-10-20 05:43:16,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-20 05:43:16,902 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:43:16,902 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:43:16,924 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09495175-7f96-4a97-aae7-a9d15895a5b4/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-20 05:43:17,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09495175-7f96-4a97-aae7-a9d15895a5b4/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 05:43:17,124 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)] === [2021-10-20 05:43:17,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:43:17,125 INFO L82 PathProgramCache]: Analyzing trace with hash -1237187795, now seen corresponding path program 1 times [2021-10-20 05:43:17,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 05:43:17,125 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [616985999] [2021-10-20 05:43:17,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:43:17,126 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 05:43:17,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09495175-7f96-4a97-aae7-a9d15895a5b4/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 05:43:17,127 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09495175-7f96-4a97-aae7-a9d15895a5b4/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 05:43:17,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09495175-7f96-4a97-aae7-a9d15895a5b4/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-20 05:43:17,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:43:17,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-20 05:43:17,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:43:17,233 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 [2021-10-20 05:43:17,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:43:17,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:43:17,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:43:17,296 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 05:43:17,296 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [616985999] [2021-10-20 05:43:17,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [616985999] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 05:43:17,297 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:43:17,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-20 05:43:17,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760211339] [2021-10-20 05:43:17,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-20 05:43:17,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 05:43:17,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-20 05:43:17,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-20 05:43:17,299 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) [2021-10-20 05:43:17,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:43:17,348 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2021-10-20 05:43:17,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-20 05:43:17,348 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 [2021-10-20 05:43:17,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:43:17,350 INFO L225 Difference]: With dead ends: 18 [2021-10-20 05:43:17,350 INFO L226 Difference]: Without dead ends: 18 [2021-10-20 05:43:17,351 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-20 05:43:17,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-10-20 05:43:17,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 12. [2021-10-20 05:43:17,355 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) [2021-10-20 05:43:17,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2021-10-20 05:43:17,357 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 10 [2021-10-20 05:43:17,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:43:17,357 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2021-10-20 05:43:17,358 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) [2021-10-20 05:43:17,358 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2021-10-20 05:43:17,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-20 05:43:17,359 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:43:17,359 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:43:17,370 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09495175-7f96-4a97-aae7-a9d15895a5b4/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-10-20 05:43:17,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09495175-7f96-4a97-aae7-a9d15895a5b4/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 05:43:17,570 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)] === [2021-10-20 05:43:17,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:43:17,571 INFO L82 PathProgramCache]: Analyzing trace with hash 359142382, now seen corresponding path program 1 times [2021-10-20 05:43:17,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 05:43:17,572 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [297903436] [2021-10-20 05:43:17,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:43:17,572 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 05:43:17,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09495175-7f96-4a97-aae7-a9d15895a5b4/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 05:43:17,573 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09495175-7f96-4a97-aae7-a9d15895a5b4/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 05:43:17,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09495175-7f96-4a97-aae7-a9d15895a5b4/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-20 05:43:17,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-20 05:43:17,662 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-20 05:43:17,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-20 05:43:17,713 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-20 05:43:17,714 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-20 05:43:17,715 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK [2021-10-20 05:43:17,717 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE [2021-10-20 05:43:17,717 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE [2021-10-20 05:43:17,718 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE [2021-10-20 05:43:17,735 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09495175-7f96-4a97-aae7-a9d15895a5b4/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-20 05:43:17,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09495175-7f96-4a97-aae7-a9d15895a5b4/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 05:43:17,924 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-20 05:43:17,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 05:43:17 BoogieIcfgContainer [2021-10-20 05:43:17,943 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-20 05:43:17,946 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-20 05:43:17,946 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-20 05:43:17,946 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-20 05:43:17,947 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:43:15" (3/4) ... [2021-10-20 05:43:17,952 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-20 05:43:17,953 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-20 05:43:17,954 INFO L168 Benchmark]: Toolchain (without parser) took 4259.45 ms. Allocated memory was 60.8 MB in the beginning and 79.7 MB in the end (delta: 18.9 MB). Free memory was 38.8 MB in the beginning and 32.2 MB in the end (delta: 6.5 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2021-10-20 05:43:17,955 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 60.8 MB. Free memory is still 41.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 05:43:17,955 INFO L168 Benchmark]: CACSL2BoogieTranslator took 826.84 ms. Allocated memory was 60.8 MB in the beginning and 79.7 MB in the end (delta: 18.9 MB). Free memory was 38.6 MB in the beginning and 60.2 MB in the end (delta: -21.6 MB). Peak memory consumption was 16.5 MB. Max. memory is 16.1 GB. [2021-10-20 05:43:17,956 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.92 ms. Allocated memory is still 79.7 MB. Free memory was 60.2 MB in the beginning and 58.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-20 05:43:17,956 INFO L168 Benchmark]: Boogie Preprocessor took 28.12 ms. Allocated memory is still 79.7 MB. Free memory was 58.1 MB in the beginning and 56.7 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 05:43:17,957 INFO L168 Benchmark]: RCFGBuilder took 452.05 ms. Allocated memory is still 79.7 MB. Free memory was 56.7 MB in the beginning and 46.2 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-20 05:43:17,957 INFO L168 Benchmark]: TraceAbstraction took 2870.52 ms. Allocated memory is still 79.7 MB. Free memory was 45.9 MB in the beginning and 32.8 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.9 MB. Max. memory is 16.1 GB. [2021-10-20 05:43:17,958 INFO L168 Benchmark]: Witness Printer took 6.54 ms. Allocated memory is still 79.7 MB. Free memory is still 32.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 05:43:17,961 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 60.8 MB. Free memory is still 41.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 826.84 ms. Allocated memory was 60.8 MB in the beginning and 79.7 MB in the end (delta: 18.9 MB). Free memory was 38.6 MB in the beginning and 60.2 MB in the end (delta: -21.6 MB). Peak memory consumption was 16.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 63.92 ms. Allocated memory is still 79.7 MB. Free memory was 60.2 MB in the beginning and 58.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.12 ms. Allocated memory is still 79.7 MB. Free memory was 58.1 MB in the beginning and 56.7 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 452.05 ms. Allocated memory is still 79.7 MB. Free memory was 56.7 MB in the beginning and 46.2 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2870.52 ms. Allocated memory is still 79.7 MB. Free memory was 45.9 MB in the beginning and 32.8 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.9 MB. Max. memory is 16.1 GB. * Witness Printer took 6.54 ms. Allocated memory is still 79.7 MB. Free memory is still 32.2 MB. 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: 2779.8ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 14.3ms, AutomataDifference: 317.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 11.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 86 SDtfs, 96 SDslu, 67 SDs, 0 SdLazy, 90 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 134.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 73 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 133.7ms 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: 42.6ms AutomataMinimizationTime, 5 MinimizatonAttempts, 48 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 68.2ms SsaConstructionTime, 97.2ms SatisfiabilityAnalysisTime, 540.2ms 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 [2021-10-20 05:43:18,017 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09495175-7f96-4a97-aae7-a9d15895a5b4/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...