./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test7-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_69b9a4b0-9935-4d80-b635-1bcbb7c5ed6a/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_69b9a4b0-9935-4d80-b635-1bcbb7c5ed6a/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_69b9a4b0-9935-4d80-b635-1bcbb7c5ed6a/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_69b9a4b0-9935-4d80-b635-1bcbb7c5ed6a/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test7-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_69b9a4b0-9935-4d80-b635-1bcbb7c5ed6a/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_69b9a4b0-9935-4d80-b635-1bcbb7c5ed6a/bin/utaipan --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 b099a717aded091d5866869f3c84b7af6ed3ff48 ............................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_69b9a4b0-9935-4d80-b635-1bcbb7c5ed6a/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_69b9a4b0-9935-4d80-b635-1bcbb7c5ed6a/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_69b9a4b0-9935-4d80-b635-1bcbb7c5ed6a/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_69b9a4b0-9935-4d80-b635-1bcbb7c5ed6a/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test7-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_69b9a4b0-9935-4d80-b635-1bcbb7c5ed6a/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_69b9a4b0-9935-4d80-b635-1bcbb7c5ed6a/bin/utaipan --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 b099a717aded091d5866869f3c84b7af6ed3ff48 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 18:57:25,897 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 18:57:25,899 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 18:57:25,923 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 18:57:25,923 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 18:57:25,924 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 18:57:25,925 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 18:57:25,927 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 18:57:25,929 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 18:57:25,929 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 18:57:25,930 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 18:57:25,931 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 18:57:25,932 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 18:57:25,932 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 18:57:25,933 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 18:57:25,934 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 18:57:25,935 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 18:57:25,936 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 18:57:25,937 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 18:57:25,939 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 18:57:25,940 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 18:57:25,941 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 18:57:25,942 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 18:57:25,943 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 18:57:25,945 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 18:57:25,946 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 18:57:25,946 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 18:57:25,947 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 18:57:25,947 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 18:57:25,948 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 18:57:25,948 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 18:57:25,949 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 18:57:25,950 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 18:57:25,950 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 18:57:25,951 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 18:57:25,951 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 18:57:25,952 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 18:57:25,952 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 18:57:25,952 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 18:57:25,953 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 18:57:25,954 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 18:57:25,955 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_69b9a4b0-9935-4d80-b635-1bcbb7c5ed6a/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2020-12-09 18:57:25,973 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 18:57:25,973 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 18:57:25,974 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 18:57:25,974 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 18:57:25,974 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 18:57:25,974 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 18:57:25,974 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 18:57:25,974 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 18:57:25,974 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 18:57:25,975 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 18:57:25,975 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 18:57:25,975 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 18:57:25,975 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 18:57:25,975 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 18:57:25,975 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 18:57:25,976 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-09 18:57:25,976 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-09 18:57:25,976 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 18:57:25,976 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 18:57:25,976 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-09 18:57:25,976 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 18:57:25,976 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 18:57:25,976 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 18:57:25,977 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-09 18:57:25,977 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-09 18:57:25,977 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-09 18:57:25,977 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 18:57:25,977 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 18:57:25,977 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 18:57:25,977 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 18:57:25,977 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 18:57:25,977 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 18:57:25,978 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 18:57:25,978 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 18:57:25,978 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 18:57:25,978 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 18:57:25,978 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 18:57:25,978 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 18:57:25,978 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 18:57:25,978 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-vcloud-master/worker/run_dir_69b9a4b0-9935-4d80-b635-1bcbb7c5ed6a/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_69b9a4b0-9935-4d80-b635-1bcbb7c5ed6a/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b099a717aded091d5866869f3c84b7af6ed3ff48 [2020-12-09 18:57:26,151 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 18:57:26,169 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 18:57:26,172 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 18:57:26,172 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 18:57:26,173 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 18:57:26,174 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_69b9a4b0-9935-4d80-b635-1bcbb7c5ed6a/bin/utaipan/../../sv-benchmarks/c/ldv-memsafety/memleaks_test7-1.i [2020-12-09 18:57:26,215 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_69b9a4b0-9935-4d80-b635-1bcbb7c5ed6a/bin/utaipan/data/a6efd88f4/f9374179d6d944a9aff7d4def799952d/FLAG87a08f495 [2020-12-09 18:57:26,645 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 18:57:26,645 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_69b9a4b0-9935-4d80-b635-1bcbb7c5ed6a/sv-benchmarks/c/ldv-memsafety/memleaks_test7-1.i [2020-12-09 18:57:26,657 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_69b9a4b0-9935-4d80-b635-1bcbb7c5ed6a/bin/utaipan/data/a6efd88f4/f9374179d6d944a9aff7d4def799952d/FLAG87a08f495 [2020-12-09 18:57:26,667 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_69b9a4b0-9935-4d80-b635-1bcbb7c5ed6a/bin/utaipan/data/a6efd88f4/f9374179d6d944a9aff7d4def799952d [2020-12-09 18:57:26,669 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 18:57:26,670 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 18:57:26,671 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 18:57:26,671 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 18:57:26,673 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 18:57:26,674 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:57:26" (1/1) ... [2020-12-09 18:57:26,675 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a2eba14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:57:26, skipping insertion in model container [2020-12-09 18:57:26,675 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:57:26" (1/1) ... [2020-12-09 18:57:26,682 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 18:57:26,721 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 18:57:26,945 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 18:57:26,957 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) [2020-12-09 18:57:26,958 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@b0910f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:57:26, skipping insertion in model container [2020-12-09 18:57:26,958 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 18:57:26,958 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2020-12-09 18:57:26,959 INFO L168 Benchmark]: Toolchain (without parser) took 288.63 ms. Allocated memory is still 83.9 MB. Free memory was 53.7 MB in the beginning and 59.1 MB in the end (delta: -5.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-09 18:57:26,960 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 83.9 MB. Free memory was 61.7 MB in the beginning and 61.6 MB in the end (delta: 78.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 18:57:26,961 INFO L168 Benchmark]: CACSL2BoogieTranslator took 286.83 ms. Allocated memory is still 83.9 MB. Free memory was 53.5 MB in the beginning and 59.4 MB in the end (delta: -5.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-09 18:57:26,962 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 83.9 MB. Free memory was 61.7 MB in the beginning and 61.6 MB in the end (delta: 78.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 286.83 ms. Allocated memory is still 83.9 MB. Free memory was 53.5 MB in the beginning and 59.4 MB in the end (delta: -5.8 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 0.2.0-7b2dab5 [2020-12-09 18:57:28,260 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 18:57:28,261 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 18:57:28,284 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 18:57:28,285 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 18:57:28,286 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 18:57:28,287 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 18:57:28,289 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 18:57:28,291 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 18:57:28,291 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 18:57:28,292 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 18:57:28,293 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 18:57:28,294 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 18:57:28,295 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 18:57:28,296 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 18:57:28,297 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 18:57:28,298 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 18:57:28,298 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 18:57:28,300 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 18:57:28,302 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 18:57:28,304 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 18:57:28,305 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 18:57:28,306 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 18:57:28,307 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 18:57:28,309 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 18:57:28,310 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 18:57:28,310 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 18:57:28,311 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 18:57:28,311 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 18:57:28,312 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 18:57:28,313 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 18:57:28,313 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 18:57:28,314 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 18:57:28,314 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 18:57:28,315 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 18:57:28,316 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 18:57:28,316 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 18:57:28,316 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 18:57:28,316 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 18:57:28,317 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 18:57:28,318 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 18:57:28,318 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_69b9a4b0-9935-4d80-b635-1bcbb7c5ed6a/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2020-12-09 18:57:28,343 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 18:57:28,344 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 18:57:28,345 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 18:57:28,345 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 18:57:28,345 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 18:57:28,345 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 18:57:28,345 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 18:57:28,345 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 18:57:28,345 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 18:57:28,346 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-09 18:57:28,346 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-09 18:57:28,346 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 18:57:28,347 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 18:57:28,347 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-09 18:57:28,347 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 18:57:28,347 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 18:57:28,347 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 18:57:28,348 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-09 18:57:28,348 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-09 18:57:28,348 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-09 18:57:28,348 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 18:57:28,348 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 18:57:28,348 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-09 18:57:28,348 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-09 18:57:28,348 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 18:57:28,349 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 18:57:28,349 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 18:57:28,349 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-09 18:57:28,349 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 18:57:28,349 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 18:57:28,349 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 18:57:28,349 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 18:57:28,350 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-12-09 18:57:28,350 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-09 18:57:28,350 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 18:57:28,350 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 18:57:28,350 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-vcloud-master/worker/run_dir_69b9a4b0-9935-4d80-b635-1bcbb7c5ed6a/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_69b9a4b0-9935-4d80-b635-1bcbb7c5ed6a/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b099a717aded091d5866869f3c84b7af6ed3ff48 [2020-12-09 18:57:28,580 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 18:57:28,595 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 18:57:28,597 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 18:57:28,598 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 18:57:28,598 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 18:57:28,599 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_69b9a4b0-9935-4d80-b635-1bcbb7c5ed6a/bin/utaipan/../../sv-benchmarks/c/ldv-memsafety/memleaks_test7-1.i [2020-12-09 18:57:28,641 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_69b9a4b0-9935-4d80-b635-1bcbb7c5ed6a/bin/utaipan/data/c79ad0f62/52e978a328b94d2e91043400355851a5/FLAGb5a4858c0 [2020-12-09 18:57:29,090 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 18:57:29,090 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_69b9a4b0-9935-4d80-b635-1bcbb7c5ed6a/sv-benchmarks/c/ldv-memsafety/memleaks_test7-1.i [2020-12-09 18:57:29,102 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_69b9a4b0-9935-4d80-b635-1bcbb7c5ed6a/bin/utaipan/data/c79ad0f62/52e978a328b94d2e91043400355851a5/FLAGb5a4858c0 [2020-12-09 18:57:29,111 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_69b9a4b0-9935-4d80-b635-1bcbb7c5ed6a/bin/utaipan/data/c79ad0f62/52e978a328b94d2e91043400355851a5 [2020-12-09 18:57:29,113 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 18:57:29,114 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 18:57:29,115 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 18:57:29,115 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 18:57:29,118 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 18:57:29,119 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:57:29" (1/1) ... [2020-12-09 18:57:29,120 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c7b7245 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:57:29, skipping insertion in model container [2020-12-09 18:57:29,120 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:57:29" (1/1) ... [2020-12-09 18:57:29,125 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 18:57:29,156 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 18:57:29,435 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 18:57:29,452 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2020-12-09 18:57:29,460 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 18:57:29,509 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 18:57:29,516 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 18:57:29,562 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 18:57:29,628 INFO L208 MainTranslator]: Completed translation [2020-12-09 18:57:29,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:57:29 WrapperNode [2020-12-09 18:57:29,629 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 18:57:29,629 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 18:57:29,629 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 18:57:29,630 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 18:57:29,635 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:57:29" (1/1) ... [2020-12-09 18:57:29,657 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:57:29" (1/1) ... [2020-12-09 18:57:29,675 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 18:57:29,676 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 18:57:29,676 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 18:57:29,676 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 18:57:29,683 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:57:29" (1/1) ... [2020-12-09 18:57:29,683 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:57:29" (1/1) ... [2020-12-09 18:57:29,686 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:57:29" (1/1) ... [2020-12-09 18:57:29,686 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:57:29" (1/1) ... [2020-12-09 18:57:29,691 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:57:29" (1/1) ... [2020-12-09 18:57:29,692 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:57:29" (1/1) ... [2020-12-09 18:57:29,694 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:57:29" (1/1) ... [2020-12-09 18:57:29,696 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 18:57:29,697 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 18:57:29,697 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 18:57:29,697 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 18:57:29,698 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:57:29" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_69b9a4b0-9935-4d80-b635-1bcbb7c5ed6a/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 18:57:29,748 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-09 18:57:29,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-09 18:57:29,748 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 18:57:29,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 18:57:29,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-09 18:57:29,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 18:57:29,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 18:57:29,955 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 18:57:29,955 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2020-12-09 18:57:29,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:57:29 BoogieIcfgContainer [2020-12-09 18:57:29,956 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 18:57:29,957 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 18:57:29,957 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 18:57:29,959 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 18:57:29,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 06:57:29" (1/3) ... [2020-12-09 18:57:29,960 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e1f05a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:57:29, skipping insertion in model container [2020-12-09 18:57:29,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:57:29" (2/3) ... [2020-12-09 18:57:29,960 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e1f05a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:57:29, skipping insertion in model container [2020-12-09 18:57:29,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:57:29" (3/3) ... [2020-12-09 18:57:29,961 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test7-1.i [2020-12-09 18:57:29,971 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 18:57:29,973 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-12-09 18:57:29,981 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-12-09 18:57:29,994 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 18:57:29,994 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-09 18:57:29,994 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 18:57:29,994 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 18:57:29,994 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 18:57:29,994 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 18:57:29,995 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 18:57:29,995 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 18:57:30,003 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-12-09 18:57:30,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 18:57:30,007 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:57:30,007 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:57:30,007 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 18:57:30,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:57:30,011 INFO L82 PathProgramCache]: Analyzing trace with hash 119443416, now seen corresponding path program 1 times [2020-12-09 18:57:30,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 18:57:30,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [492627372] [2020-12-09 18:57:30,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_69b9a4b0-9935-4d80-b635-1bcbb7c5ed6a/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-12-09 18:57:30,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:57:30,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 18:57:30,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 18:57:30,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:57:30,150 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 18:57:30,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [492627372] [2020-12-09 18:57:30,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:57:30,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 18:57:30,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887797214] [2020-12-09 18:57:30,156 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 18:57:30,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 18:57:30,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 18:57:30,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 18:57:30,171 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 4 states. [2020-12-09 18:57:30,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:57:30,211 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2020-12-09 18:57:30,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 18:57:30,213 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-12-09 18:57:30,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:57:30,223 INFO L225 Difference]: With dead ends: 25 [2020-12-09 18:57:30,223 INFO L226 Difference]: Without dead ends: 23 [2020-12-09 18:57:30,225 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 18:57:30,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-12-09 18:57:30,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-12-09 18:57:30,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-09 18:57:30,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2020-12-09 18:57:30,253 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 8 [2020-12-09 18:57:30,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:57:30,254 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2020-12-09 18:57:30,254 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 18:57:30,254 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2020-12-09 18:57:30,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 18:57:30,254 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:57:30,255 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:57:30,455 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-09 18:57:30,455 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 18:57:30,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:57:30,456 INFO L82 PathProgramCache]: Analyzing trace with hash -593299125, now seen corresponding path program 1 times [2020-12-09 18:57:30,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 18:57:30,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1804908996] [2020-12-09 18:57:30,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_69b9a4b0-9935-4d80-b635-1bcbb7c5ed6a/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-12-09 18:57:30,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:57:30,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 18:57:30,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 18:57:30,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:57:30,516 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 18:57:30,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1804908996] [2020-12-09 18:57:30,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:57:30,517 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 18:57:30,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93693017] [2020-12-09 18:57:30,518 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 18:57:30,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 18:57:30,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 18:57:30,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 18:57:30,519 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 4 states. [2020-12-09 18:57:30,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:57:30,557 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions. [2020-12-09 18:57:30,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 18:57:30,558 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-09 18:57:30,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:57:30,558 INFO L225 Difference]: With dead ends: 43 [2020-12-09 18:57:30,558 INFO L226 Difference]: Without dead ends: 43 [2020-12-09 18:57:30,559 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 18:57:30,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-12-09 18:57:30,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 25. [2020-12-09 18:57:30,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-12-09 18:57:30,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2020-12-09 18:57:30,563 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 9 [2020-12-09 18:57:30,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:57:30,563 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2020-12-09 18:57:30,563 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 18:57:30,563 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2020-12-09 18:57:30,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 18:57:30,563 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:57:30,563 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:57:30,764 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-09 18:57:30,765 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 18:57:30,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:57:30,766 INFO L82 PathProgramCache]: Analyzing trace with hash -592221333, now seen corresponding path program 1 times [2020-12-09 18:57:30,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 18:57:30,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [29357000] [2020-12-09 18:57:30,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_69b9a4b0-9935-4d80-b635-1bcbb7c5ed6a/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-12-09 18:57:30,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:57:30,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-09 18:57:30,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 18:57:30,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:57:30,898 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 18:57:30,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [29357000] [2020-12-09 18:57:30,899 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:57:30,899 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 18:57:30,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644749790] [2020-12-09 18:57:30,899 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 18:57:30,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 18:57:30,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 18:57:30,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 18:57:30,901 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand 5 states. [2020-12-09 18:57:30,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:57:30,955 INFO L93 Difference]: Finished difference Result 42 states and 48 transitions. [2020-12-09 18:57:30,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 18:57:30,956 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-12-09 18:57:30,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:57:30,957 INFO L225 Difference]: With dead ends: 42 [2020-12-09 18:57:30,957 INFO L226 Difference]: Without dead ends: 42 [2020-12-09 18:57:30,957 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-12-09 18:57:30,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-12-09 18:57:30,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 31. [2020-12-09 18:57:30,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-12-09 18:57:30,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2020-12-09 18:57:30,962 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 9 [2020-12-09 18:57:30,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:57:30,962 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2020-12-09 18:57:30,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 18:57:30,963 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2020-12-09 18:57:30,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 18:57:30,963 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:57:30,963 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:57:31,164 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-09 18:57:31,165 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 18:57:31,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:57:31,167 INFO L82 PathProgramCache]: Analyzing trace with hash 1181708237, now seen corresponding path program 1 times [2020-12-09 18:57:31,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 18:57:31,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1002717975] [2020-12-09 18:57:31,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_69b9a4b0-9935-4d80-b635-1bcbb7c5ed6a/bin/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-12-09 18:57:31,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:57:31,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 18:57:31,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 18:57:31,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:57:31,308 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 18:57:31,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1002717975] [2020-12-09 18:57:31,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:57:31,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 18:57:31,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187162570] [2020-12-09 18:57:31,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 18:57:31,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 18:57:31,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 18:57:31,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 18:57:31,310 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. Second operand 5 states. [2020-12-09 18:57:31,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:57:31,349 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2020-12-09 18:57:31,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 18:57:31,349 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-12-09 18:57:31,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:57:31,350 INFO L225 Difference]: With dead ends: 36 [2020-12-09 18:57:31,350 INFO L226 Difference]: Without dead ends: 36 [2020-12-09 18:57:31,350 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-09 18:57:31,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-12-09 18:57:31,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2020-12-09 18:57:31,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-09 18:57:31,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2020-12-09 18:57:31,354 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 9 [2020-12-09 18:57:31,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:57:31,354 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2020-12-09 18:57:31,355 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 18:57:31,355 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2020-12-09 18:57:31,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 18:57:31,355 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:57:31,355 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:57:31,556 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-12-09 18:57:31,557 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 18:57:31,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:57:31,559 INFO L82 PathProgramCache]: Analyzing trace with hash 1181711120, now seen corresponding path program 1 times [2020-12-09 18:57:31,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 18:57:31,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1721061105] [2020-12-09 18:57:31,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_69b9a4b0-9935-4d80-b635-1bcbb7c5ed6a/bin/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-12-09 18:57:31,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:57:31,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-09 18:57:31,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 18:57:31,691 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 18:57:31,691 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2020-12-09 18:57:31,694 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 18:57:31,708 INFO L625 ElimStorePlain]: treesize reduction 12, result has 55.6 percent of original size [2020-12-09 18:57:31,712 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 18:57:31,714 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-09 18:57:31,714 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:9, output treesize:15 [2020-12-09 18:57:31,715 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 18:57:31,728 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 18:57:31,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:57:31,803 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 18:57:31,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1721061105] [2020-12-09 18:57:31,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:57:31,803 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 18:57:31,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098027664] [2020-12-09 18:57:31,803 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 18:57:31,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 18:57:31,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 18:57:31,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 18:57:31,804 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand 5 states. [2020-12-09 18:57:31,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:57:31,905 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions. [2020-12-09 18:57:31,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 18:57:31,905 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-12-09 18:57:31,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:57:31,906 INFO L225 Difference]: With dead ends: 46 [2020-12-09 18:57:31,906 INFO L226 Difference]: Without dead ends: 39 [2020-12-09 18:57:31,906 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 18:57:31,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-12-09 18:57:31,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32. [2020-12-09 18:57:31,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-12-09 18:57:31,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2020-12-09 18:57:31,909 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 9 [2020-12-09 18:57:31,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:57:31,909 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2020-12-09 18:57:31,909 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 18:57:31,909 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2020-12-09 18:57:31,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 18:57:31,910 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:57:31,910 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:57:32,110 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-12-09 18:57:32,111 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 18:57:32,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:57:32,113 INFO L82 PathProgramCache]: Analyzing trace with hash 1182786029, now seen corresponding path program 1 times [2020-12-09 18:57:32,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 18:57:32,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [155673159] [2020-12-09 18:57:32,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_69b9a4b0-9935-4d80-b635-1bcbb7c5ed6a/bin/utaipan/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-12-09 18:57:32,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:57:32,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 18:57:32,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 18:57:32,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:57:32,275 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 18:57:32,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [155673159] [2020-12-09 18:57:32,275 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:57:32,276 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 18:57:32,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762682122] [2020-12-09 18:57:32,276 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 18:57:32,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 18:57:32,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 18:57:32,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 18:57:32,276 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand 4 states. [2020-12-09 18:57:32,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:57:32,302 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2020-12-09 18:57:32,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 18:57:32,303 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-09 18:57:32,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:57:32,303 INFO L225 Difference]: With dead ends: 24 [2020-12-09 18:57:32,303 INFO L226 Difference]: Without dead ends: 22 [2020-12-09 18:57:32,304 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 18:57:32,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-12-09 18:57:32,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-12-09 18:57:32,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-12-09 18:57:32,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2020-12-09 18:57:32,305 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 9 [2020-12-09 18:57:32,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:57:32,305 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2020-12-09 18:57:32,305 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 18:57:32,305 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2020-12-09 18:57:32,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 18:57:32,306 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:57:32,306 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:57:32,506 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-12-09 18:57:32,507 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 18:57:32,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:57:32,509 INFO L82 PathProgramCache]: Analyzing trace with hash -1178992070, now seen corresponding path program 1 times [2020-12-09 18:57:32,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 18:57:32,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1115279903] [2020-12-09 18:57:32,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_69b9a4b0-9935-4d80-b635-1bcbb7c5ed6a/bin/utaipan/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-12-09 18:57:32,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:57:32,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 18:57:32,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 18:57:32,638 INFO L382 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 [2020-12-09 18:57:32,638 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 18:57:32,640 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 18:57:32,640 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 18:57:32,640 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-12-09 18:57:32,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:57:32,652 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 18:57:32,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1115279903] [2020-12-09 18:57:32,652 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:57:32,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 18:57:32,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859123936] [2020-12-09 18:57:32,652 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 18:57:32,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 18:57:32,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 18:57:32,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 18:57:32,653 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 4 states. [2020-12-09 18:57:32,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:57:32,684 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2020-12-09 18:57:32,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 18:57:32,684 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-09 18:57:32,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:57:32,684 INFO L225 Difference]: With dead ends: 24 [2020-12-09 18:57:32,685 INFO L226 Difference]: Without dead ends: 24 [2020-12-09 18:57:32,685 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 18:57:32,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-12-09 18:57:32,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 21. [2020-12-09 18:57:32,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-12-09 18:57:32,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2020-12-09 18:57:32,686 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 10 [2020-12-09 18:57:32,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:57:32,687 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2020-12-09 18:57:32,687 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 18:57:32,687 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2020-12-09 18:57:32,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 18:57:32,687 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:57:32,687 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:57:32,888 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-12-09 18:57:32,889 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 18:57:32,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:57:32,890 INFO L82 PathProgramCache]: Analyzing trace with hash -1178944307, now seen corresponding path program 1 times [2020-12-09 18:57:32,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 18:57:32,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1529314371] [2020-12-09 18:57:32,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_69b9a4b0-9935-4d80-b635-1bcbb7c5ed6a/bin/utaipan/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-12-09 18:57:32,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:57:32,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-09 18:57:32,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 18:57:32,982 INFO L382 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 [2020-12-09 18:57:32,983 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 18:57:32,984 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 18:57:32,985 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 18:57:32,985 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-12-09 18:57:33,012 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 18:57:33,012 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2020-12-09 18:57:33,015 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 18:57:33,021 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 18:57:33,025 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-09 18:57:33,025 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:17, output treesize:15 [2020-12-09 18:57:33,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:57:33,068 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 18:57:33,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1529314371] [2020-12-09 18:57:33,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:57:33,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 18:57:33,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264803646] [2020-12-09 18:57:33,068 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 18:57:33,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 18:57:33,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 18:57:33,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 18:57:33,069 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 4 states. [2020-12-09 18:57:33,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:57:33,096 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2020-12-09 18:57:33,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 18:57:33,097 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-09 18:57:33,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:57:33,097 INFO L225 Difference]: With dead ends: 23 [2020-12-09 18:57:33,097 INFO L226 Difference]: Without dead ends: 23 [2020-12-09 18:57:33,097 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 18:57:33,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-12-09 18:57:33,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2020-12-09 18:57:33,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-12-09 18:57:33,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2020-12-09 18:57:33,099 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 10 [2020-12-09 18:57:33,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:57:33,099 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2020-12-09 18:57:33,099 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 18:57:33,099 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2020-12-09 18:57:33,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 18:57:33,100 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:57:33,100 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:57:33,300 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-12-09 18:57:33,301 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 18:57:33,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:57:33,303 INFO L82 PathProgramCache]: Analyzing trace with hash -1178944306, now seen corresponding path program 1 times [2020-12-09 18:57:33,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 18:57:33,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [742745983] [2020-12-09 18:57:33,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_69b9a4b0-9935-4d80-b635-1bcbb7c5ed6a/bin/utaipan/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2020-12-09 18:57:33,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:57:33,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-09 18:57:33,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 18:57:33,400 INFO L382 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 [2020-12-09 18:57:33,401 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 18:57:33,409 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 18:57:33,411 INFO L382 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 [2020-12-09 18:57:33,412 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-09 18:57:33,417 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 18:57:33,418 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 18:57:33,418 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:16 [2020-12-09 18:57:33,442 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 18:57:33,443 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 17 [2020-12-09 18:57:33,444 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 18:57:33,453 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 18:57:33,456 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2020-12-09 18:57:33,458 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-09 18:57:33,467 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 18:57:33,469 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 18:57:33,469 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:27, output treesize:9 [2020-12-09 18:57:33,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:57:33,485 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 18:57:33,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [742745983] [2020-12-09 18:57:33,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:57:33,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 18:57:33,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859429682] [2020-12-09 18:57:33,486 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 18:57:33,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 18:57:33,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 18:57:33,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 18:57:33,486 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 4 states. [2020-12-09 18:57:33,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:57:33,504 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2020-12-09 18:57:33,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 18:57:33,505 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-09 18:57:33,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:57:33,505 INFO L225 Difference]: With dead ends: 22 [2020-12-09 18:57:33,505 INFO L226 Difference]: Without dead ends: 22 [2020-12-09 18:57:33,505 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 18:57:33,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-12-09 18:57:33,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 19. [2020-12-09 18:57:33,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-12-09 18:57:33,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2020-12-09 18:57:33,507 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 10 [2020-12-09 18:57:33,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:57:33,507 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2020-12-09 18:57:33,507 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 18:57:33,507 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2020-12-09 18:57:33,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-09 18:57:33,507 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:57:33,508 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:57:33,708 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-12-09 18:57:33,709 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 18:57:33,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:57:33,710 INFO L82 PathProgramCache]: Analyzing trace with hash 1815853889, now seen corresponding path program 1 times [2020-12-09 18:57:33,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 18:57:33,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2091591705] [2020-12-09 18:57:33,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_69b9a4b0-9935-4d80-b635-1bcbb7c5ed6a/bin/utaipan/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2020-12-09 18:57:33,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:57:33,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 18:57:33,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 18:57:33,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:57:33,824 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 18:57:33,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2091591705] [2020-12-09 18:57:33,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:57:33,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 18:57:33,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537917251] [2020-12-09 18:57:33,825 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 18:57:33,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 18:57:33,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 18:57:33,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 18:57:33,826 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 5 states. [2020-12-09 18:57:33,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:57:33,851 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2020-12-09 18:57:33,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 18:57:33,852 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-12-09 18:57:33,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:57:33,852 INFO L225 Difference]: With dead ends: 24 [2020-12-09 18:57:33,852 INFO L226 Difference]: Without dead ends: 24 [2020-12-09 18:57:33,852 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-09 18:57:33,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-12-09 18:57:33,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 21. [2020-12-09 18:57:33,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-12-09 18:57:33,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2020-12-09 18:57:33,854 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 14 [2020-12-09 18:57:33,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:57:33,854 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2020-12-09 18:57:33,854 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 18:57:33,854 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2020-12-09 18:57:33,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-09 18:57:33,855 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:57:33,855 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:57:34,055 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 mathsat -unsat_core_generation=3 [2020-12-09 18:57:34,057 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 18:57:34,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:57:34,058 INFO L82 PathProgramCache]: Analyzing trace with hash 1815856772, now seen corresponding path program 1 times [2020-12-09 18:57:34,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 18:57:34,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [97390855] [2020-12-09 18:57:34,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_69b9a4b0-9935-4d80-b635-1bcbb7c5ed6a/bin/utaipan/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2020-12-09 18:57:34,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:57:34,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-09 18:57:34,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 18:57:34,207 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 18:57:34,207 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2020-12-09 18:57:34,209 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 18:57:34,228 INFO L625 ElimStorePlain]: treesize reduction 12, result has 55.6 percent of original size [2020-12-09 18:57:34,233 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 18:57:34,234 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-09 18:57:34,234 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:9, output treesize:15 [2020-12-09 18:57:34,235 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 18:57:34,245 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 18:57:36,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:57:36,412 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 18:57:36,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [97390855] [2020-12-09 18:57:36,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:57:36,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-09 18:57:36,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121606542] [2020-12-09 18:57:36,413 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 18:57:36,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 18:57:36,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 18:57:36,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=36, Unknown=1, NotChecked=0, Total=56 [2020-12-09 18:57:36,413 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 8 states. [2020-12-09 18:57:38,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:57:38,633 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2020-12-09 18:57:38,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-09 18:57:38,634 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2020-12-09 18:57:38,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:57:38,634 INFO L225 Difference]: With dead ends: 23 [2020-12-09 18:57:38,634 INFO L226 Difference]: Without dead ends: 16 [2020-12-09 18:57:38,635 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=24, Invalid=47, Unknown=1, NotChecked=0, Total=72 [2020-12-09 18:57:38,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-12-09 18:57:38,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-12-09 18:57:38,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-12-09 18:57:38,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-12-09 18:57:38,636 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14 [2020-12-09 18:57:38,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:57:38,636 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-12-09 18:57:38,636 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 18:57:38,636 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-12-09 18:57:38,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-09 18:57:38,636 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:57:38,636 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:57:38,837 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 mathsat -unsat_core_generation=3 [2020-12-09 18:57:38,838 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 18:57:38,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:57:38,839 INFO L82 PathProgramCache]: Analyzing trace with hash 2005770586, now seen corresponding path program 1 times [2020-12-09 18:57:38,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 18:57:38,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2081844519] [2020-12-09 18:57:38,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_69b9a4b0-9935-4d80-b635-1bcbb7c5ed6a/bin/utaipan/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2020-12-09 18:57:38,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 18:57:38,905 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 18:57:38,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 18:57:38,929 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 18:57:38,953 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-12-09 18:57:38,953 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 18:57:39,154 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 mathsat -unsat_core_generation=3 [2020-12-09 18:57:39,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 06:57:39 BoogieIcfgContainer [2020-12-09 18:57:39,176 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 18:57:39,177 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 18:57:39,177 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 18:57:39,177 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 18:57:39,177 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:57:29" (3/4) ... [2020-12-09 18:57:39,179 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-09 18:57:39,179 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 18:57:39,180 INFO L168 Benchmark]: Toolchain (without parser) took 10065.33 ms. Allocated memory was 56.6 MB in the beginning and 83.9 MB in the end (delta: 27.3 MB). Free memory was 34.2 MB in the beginning and 50.6 MB in the end (delta: -16.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 16.1 GB. [2020-12-09 18:57:39,180 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 56.6 MB. Free memory was 39.0 MB in the beginning and 39.0 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 18:57:39,181 INFO L168 Benchmark]: CACSL2BoogieTranslator took 513.56 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 34.0 MB in the beginning and 35.5 MB in the end (delta: -1.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-09 18:57:39,181 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.65 ms. Allocated memory is still 69.2 MB. Free memory was 35.5 MB in the beginning and 50.9 MB in the end (delta: -15.5 MB). Peak memory consumption was 3.1 MB. Max. memory is 16.1 GB. [2020-12-09 18:57:39,182 INFO L168 Benchmark]: Boogie Preprocessor took 20.90 ms. Allocated memory is still 69.2 MB. Free memory was 50.9 MB in the beginning and 49.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 18:57:39,182 INFO L168 Benchmark]: RCFGBuilder took 259.18 ms. Allocated memory is still 69.2 MB. Free memory was 49.5 MB in the beginning and 49.3 MB in the end (delta: 211.9 kB). Peak memory consumption was 17.9 MB. Max. memory is 16.1 GB. [2020-12-09 18:57:39,182 INFO L168 Benchmark]: TraceAbstraction took 9219.45 ms. Allocated memory was 69.2 MB in the beginning and 83.9 MB in the end (delta: 14.7 MB). Free memory was 48.7 MB in the beginning and 51.4 MB in the end (delta: -2.8 MB). Peak memory consumption was 11.5 MB. Max. memory is 16.1 GB. [2020-12-09 18:57:39,182 INFO L168 Benchmark]: Witness Printer took 2.51 ms. Allocated memory is still 83.9 MB. Free memory was 51.4 MB in the beginning and 50.6 MB in the end (delta: 808.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 18:57:39,185 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 56.6 MB. Free memory was 39.0 MB in the beginning and 39.0 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 513.56 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 34.0 MB in the beginning and 35.5 MB in the end (delta: -1.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 45.65 ms. Allocated memory is still 69.2 MB. Free memory was 35.5 MB in the beginning and 50.9 MB in the end (delta: -15.5 MB). Peak memory consumption was 3.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.90 ms. Allocated memory is still 69.2 MB. Free memory was 50.9 MB in the beginning and 49.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 259.18 ms. Allocated memory is still 69.2 MB. Free memory was 49.5 MB in the beginning and 49.3 MB in the end (delta: 211.9 kB). Peak memory consumption was 17.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 9219.45 ms. Allocated memory was 69.2 MB in the beginning and 83.9 MB in the end (delta: 14.7 MB). Free memory was 48.7 MB in the beginning and 51.4 MB in the end (delta: -2.8 MB). Peak memory consumption was 11.5 MB. Max. memory is 16.1 GB. * Witness Printer took 2.51 ms. Allocated memory is still 83.9 MB. Free memory was 51.4 MB in the beginning and 50.6 MB in the end (delta: 808.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 789]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 789. Possible FailurePath: [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; VAL [ldv_global_msg_list={3:0}] [L783] struct A a7; [L764] int ret = - -3; [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); VAL [ldv_global_msg_list={3:0}] [L765] int *p = (int *)ldv_malloc(sizeof(int)); [L766] COND FALSE !(p==0) [L758] return __VERIFIER_nondet_int(); [L768] ret = f6() [L769] COND FALSE !(ret<0) [L761] return __VERIFIER_nondet_int(); [L771] ret = g6() [L772] COND FALSE !(ret<0) VAL [ldv_global_msg_list={3:0}] [L774] a->p = p VAL [ldv_global_msg_list={3:0}] [L775] return 0; VAL [ldv_global_msg_list={3:0}] [L784] int ret = probe1_6(&a7); [L785] COND TRUE ret==0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 26 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 9.1s, OverallIterations: 12, TraceHistogramMax: 1, AutomataDifference: 2.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 247 SDtfs, 340 SDslu, 319 SDs, 0 SdLazy, 235 SolverSat, 17 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 110 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 11 MinimizatonAttempts, 51 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 126 NumberOfCodeBlocks, 126 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 100 ConstructedInterpolants, 28 QuantifiedInterpolants, 9960 SizeOfPredicates, 29 NumberOfNonLiveVariables, 523 ConjunctsInSsa, 64 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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 Received shutdown request...