./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test8.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_4c7ba0c8-5a4e-4c68-98fd-c9eaab080f46/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_4c7ba0c8-5a4e-4c68-98fd-c9eaab080f46/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_4c7ba0c8-5a4e-4c68-98fd-c9eaab080f46/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_4c7ba0c8-5a4e-4c68-98fd-c9eaab080f46/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test8.i -s /tmp/vcloud-vcloud-master/worker/run_dir_4c7ba0c8-5a4e-4c68-98fd-c9eaab080f46/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_4c7ba0c8-5a4e-4c68-98fd-c9eaab080f46/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 ea76204732189107ea57f186f34feef6f7f76c1e ............................................................................................................................................ 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_4c7ba0c8-5a4e-4c68-98fd-c9eaab080f46/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_4c7ba0c8-5a4e-4c68-98fd-c9eaab080f46/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_4c7ba0c8-5a4e-4c68-98fd-c9eaab080f46/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_4c7ba0c8-5a4e-4c68-98fd-c9eaab080f46/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test8.i -s /tmp/vcloud-vcloud-master/worker/run_dir_4c7ba0c8-5a4e-4c68-98fd-c9eaab080f46/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_4c7ba0c8-5a4e-4c68-98fd-c9eaab080f46/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 ea76204732189107ea57f186f34feef6f7f76c1e ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 05:52:00,590 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 05:52:00,592 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 05:52:00,623 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 05:52:00,624 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 05:52:00,632 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 05:52:00,634 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 05:52:00,636 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 05:52:00,639 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 05:52:00,640 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 05:52:00,641 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 05:52:00,642 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 05:52:00,643 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 05:52:00,644 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 05:52:00,645 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 05:52:00,646 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 05:52:00,647 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 05:52:00,648 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 05:52:00,650 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 05:52:00,652 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 05:52:00,654 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 05:52:00,655 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 05:52:00,656 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 05:52:00,657 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 05:52:00,660 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 05:52:00,661 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 05:52:00,661 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 05:52:00,662 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 05:52:00,662 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 05:52:00,663 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 05:52:00,664 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 05:52:00,664 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 05:52:00,665 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 05:52:00,665 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 05:52:00,666 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 05:52:00,666 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 05:52:00,667 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 05:52:00,667 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 05:52:00,667 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 05:52:00,667 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 05:52:00,668 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 05:52:00,669 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_4c7ba0c8-5a4e-4c68-98fd-c9eaab080f46/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2020-12-09 05:52:00,692 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 05:52:00,692 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 05:52:00,693 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 05:52:00,693 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 05:52:00,693 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 05:52:00,693 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 05:52:00,693 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 05:52:00,694 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 05:52:00,694 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 05:52:00,694 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 05:52:00,694 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 05:52:00,694 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 05:52:00,694 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 05:52:00,695 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 05:52:00,695 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 05:52:00,695 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-09 05:52:00,696 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-09 05:52:00,696 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 05:52:00,696 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 05:52:00,696 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-09 05:52:00,696 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 05:52:00,696 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 05:52:00,697 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 05:52:00,697 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-09 05:52:00,697 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-09 05:52:00,697 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-09 05:52:00,697 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 05:52:00,697 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 05:52:00,698 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 05:52:00,698 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 05:52:00,698 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 05:52:00,698 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 05:52:00,698 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 05:52:00,699 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 05:52:00,699 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 05:52:00,699 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 05:52:00,699 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 05:52:00,699 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 05:52:00,699 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 05:52:00,700 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_4c7ba0c8-5a4e-4c68-98fd-c9eaab080f46/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_4c7ba0c8-5a4e-4c68-98fd-c9eaab080f46/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ea76204732189107ea57f186f34feef6f7f76c1e [2020-12-09 05:52:00,877 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 05:52:00,895 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 05:52:00,897 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 05:52:00,898 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 05:52:00,898 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 05:52:00,899 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_4c7ba0c8-5a4e-4c68-98fd-c9eaab080f46/bin/utaipan/../../sv-benchmarks/c/ldv-memsafety/memleaks_test8.i [2020-12-09 05:52:00,939 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4c7ba0c8-5a4e-4c68-98fd-c9eaab080f46/bin/utaipan/data/ed7356daa/a474b06303b145a4ac0f6ac2a4236c71/FLAGe2cb775b6 [2020-12-09 05:52:01,406 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 05:52:01,407 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_4c7ba0c8-5a4e-4c68-98fd-c9eaab080f46/sv-benchmarks/c/ldv-memsafety/memleaks_test8.i [2020-12-09 05:52:01,420 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4c7ba0c8-5a4e-4c68-98fd-c9eaab080f46/bin/utaipan/data/ed7356daa/a474b06303b145a4ac0f6ac2a4236c71/FLAGe2cb775b6 [2020-12-09 05:52:01,925 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_4c7ba0c8-5a4e-4c68-98fd-c9eaab080f46/bin/utaipan/data/ed7356daa/a474b06303b145a4ac0f6ac2a4236c71 [2020-12-09 05:52:01,927 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 05:52:01,928 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 05:52:01,930 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 05:52:01,930 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 05:52:01,933 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 05:52:01,933 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:52:01" (1/1) ... [2020-12-09 05:52:01,935 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6461cdae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:52:01, skipping insertion in model container [2020-12-09 05:52:01,935 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:52:01" (1/1) ... [2020-12-09 05:52:01,941 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 05:52:01,978 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 05:52:02,197 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 05:52:02,208 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 05:52:02,209 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@43fa6b53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:52:02, skipping insertion in model container [2020-12-09 05:52:02,209 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 05:52:02,209 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2020-12-09 05:52:02,211 INFO L168 Benchmark]: Toolchain (without parser) took 281.62 ms. Allocated memory is still 111.1 MB. Free memory was 73.6 MB in the beginning and 84.5 MB in the end (delta: -10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 05:52:02,211 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 111.1 MB. Free memory is still 91.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 05:52:02,212 INFO L168 Benchmark]: CACSL2BoogieTranslator took 279.49 ms. Allocated memory is still 111.1 MB. Free memory was 73.4 MB in the beginning and 85.0 MB in the end (delta: -11.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 05:52:02,213 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 111.1 MB. Free memory is still 91.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 279.49 ms. Allocated memory is still 111.1 MB. Free memory was 73.4 MB in the beginning and 85.0 MB in the end (delta: -11.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-7b2dab5 [2020-12-09 05:52:03,528 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 05:52:03,530 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 05:52:03,561 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 05:52:03,562 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 05:52:03,563 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 05:52:03,565 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 05:52:03,567 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 05:52:03,570 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 05:52:03,571 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 05:52:03,572 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 05:52:03,573 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 05:52:03,574 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 05:52:03,575 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 05:52:03,576 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 05:52:03,577 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 05:52:03,578 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 05:52:03,579 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 05:52:03,581 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 05:52:03,583 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 05:52:03,585 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 05:52:03,587 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 05:52:03,588 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 05:52:03,589 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 05:52:03,592 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 05:52:03,592 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 05:52:03,593 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 05:52:03,594 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 05:52:03,594 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 05:52:03,595 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 05:52:03,596 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 05:52:03,597 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 05:52:03,597 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 05:52:03,598 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 05:52:03,598 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 05:52:03,599 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 05:52:03,599 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 05:52:03,599 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 05:52:03,599 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 05:52:03,600 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 05:52:03,600 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 05:52:03,601 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_4c7ba0c8-5a4e-4c68-98fd-c9eaab080f46/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2020-12-09 05:52:03,623 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 05:52:03,623 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 05:52:03,624 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 05:52:03,624 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 05:52:03,624 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 05:52:03,624 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 05:52:03,624 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 05:52:03,625 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 05:52:03,625 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 05:52:03,625 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-09 05:52:03,626 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-09 05:52:03,626 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 05:52:03,626 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 05:52:03,626 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-09 05:52:03,626 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 05:52:03,626 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 05:52:03,627 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 05:52:03,627 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-09 05:52:03,627 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-09 05:52:03,627 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-09 05:52:03,627 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 05:52:03,627 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 05:52:03,628 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-09 05:52:03,628 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-09 05:52:03,628 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 05:52:03,628 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 05:52:03,628 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 05:52:03,628 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-09 05:52:03,629 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 05:52:03,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 05:52:03,629 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 05:52:03,629 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 05:52:03,629 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-12-09 05:52:03,630 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-09 05:52:03,630 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 05:52:03,630 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 05:52:03,630 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_4c7ba0c8-5a4e-4c68-98fd-c9eaab080f46/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_4c7ba0c8-5a4e-4c68-98fd-c9eaab080f46/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ea76204732189107ea57f186f34feef6f7f76c1e [2020-12-09 05:52:03,883 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 05:52:03,898 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 05:52:03,900 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 05:52:03,901 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 05:52:03,901 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 05:52:03,902 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_4c7ba0c8-5a4e-4c68-98fd-c9eaab080f46/bin/utaipan/../../sv-benchmarks/c/ldv-memsafety/memleaks_test8.i [2020-12-09 05:52:03,942 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4c7ba0c8-5a4e-4c68-98fd-c9eaab080f46/bin/utaipan/data/3a43f2814/e5893a1929cd41d5abcc615852c1a441/FLAG698ec7007 [2020-12-09 05:52:04,381 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 05:52:04,382 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_4c7ba0c8-5a4e-4c68-98fd-c9eaab080f46/sv-benchmarks/c/ldv-memsafety/memleaks_test8.i [2020-12-09 05:52:04,393 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4c7ba0c8-5a4e-4c68-98fd-c9eaab080f46/bin/utaipan/data/3a43f2814/e5893a1929cd41d5abcc615852c1a441/FLAG698ec7007 [2020-12-09 05:52:04,402 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_4c7ba0c8-5a4e-4c68-98fd-c9eaab080f46/bin/utaipan/data/3a43f2814/e5893a1929cd41d5abcc615852c1a441 [2020-12-09 05:52:04,404 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 05:52:04,405 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 05:52:04,405 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 05:52:04,406 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 05:52:04,408 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 05:52:04,409 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:52:04" (1/1) ... [2020-12-09 05:52:04,410 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f8706c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:52:04, skipping insertion in model container [2020-12-09 05:52:04,410 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:52:04" (1/1) ... [2020-12-09 05:52:04,415 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 05:52:04,443 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 05:52:04,704 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 05:52:04,721 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2020-12-09 05:52:04,730 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 05:52:04,772 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 05:52:04,780 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 05:52:04,825 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 05:52:04,894 INFO L208 MainTranslator]: Completed translation [2020-12-09 05:52:04,894 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:52:04 WrapperNode [2020-12-09 05:52:04,894 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 05:52:04,895 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 05:52:04,895 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 05:52:04,895 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 05:52:04,900 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:52:04" (1/1) ... [2020-12-09 05:52:04,915 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:52:04" (1/1) ... [2020-12-09 05:52:04,927 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 05:52:04,928 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 05:52:04,928 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 05:52:04,928 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 05:52:04,934 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:52:04" (1/1) ... [2020-12-09 05:52:04,934 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:52:04" (1/1) ... [2020-12-09 05:52:04,936 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:52:04" (1/1) ... [2020-12-09 05:52:04,936 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:52:04" (1/1) ... [2020-12-09 05:52:04,940 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:52:04" (1/1) ... [2020-12-09 05:52:04,941 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:52:04" (1/1) ... [2020-12-09 05:52:04,943 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:52:04" (1/1) ... [2020-12-09 05:52:04,945 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 05:52:04,946 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 05:52:04,946 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 05:52:04,946 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 05:52:04,947 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:52:04" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4c7ba0c8-5a4e-4c68-98fd-c9eaab080f46/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 05:52:05,003 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-09 05:52:05,003 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 05:52:05,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 05:52:05,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-09 05:52:05,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 05:52:05,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 05:52:05,165 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 05:52:05,165 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2020-12-09 05:52:05,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:52:05 BoogieIcfgContainer [2020-12-09 05:52:05,166 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 05:52:05,167 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 05:52:05,167 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 05:52:05,169 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 05:52:05,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 05:52:04" (1/3) ... [2020-12-09 05:52:05,170 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e6a952c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:52:05, skipping insertion in model container [2020-12-09 05:52:05,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:52:04" (2/3) ... [2020-12-09 05:52:05,170 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e6a952c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:52:05, skipping insertion in model container [2020-12-09 05:52:05,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:52:05" (3/3) ... [2020-12-09 05:52:05,171 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test8.i [2020-12-09 05:52:05,181 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 05:52:05,183 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-12-09 05:52:05,191 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-09 05:52:05,205 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 05:52:05,205 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-09 05:52:05,205 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 05:52:05,205 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 05:52:05,205 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 05:52:05,205 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 05:52:05,205 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 05:52:05,206 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 05:52:05,214 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-12-09 05:52:05,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 05:52:05,218 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:52:05,219 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 05:52:05,219 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 05:52:05,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:52:05,223 INFO L82 PathProgramCache]: Analyzing trace with hash 889508744, now seen corresponding path program 1 times [2020-12-09 05:52:05,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 05:52:05,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [811717250] [2020-12-09 05:52:05,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4c7ba0c8-5a4e-4c68-98fd-c9eaab080f46/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 05:52:05,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:52:05,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 05:52:05,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:52:05,359 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 05:52:05,359 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 05:52:05,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [811717250] [2020-12-09 05:52:05,360 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:52:05,361 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 05:52:05,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355443995] [2020-12-09 05:52:05,365 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 05:52:05,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 05:52:05,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 05:52:05,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 05:52:05,381 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 4 states. [2020-12-09 05:52:05,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:52:05,421 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2020-12-09 05:52:05,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 05:52:05,422 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-12-09 05:52:05,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:52:05,429 INFO L225 Difference]: With dead ends: 15 [2020-12-09 05:52:05,430 INFO L226 Difference]: Without dead ends: 13 [2020-12-09 05:52:05,431 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 05:52:05,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-12-09 05:52:05,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-12-09 05:52:05,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-12-09 05:52:05,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2020-12-09 05:52:05,457 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 6 [2020-12-09 05:52:05,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:52:05,458 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2020-12-09 05:52:05,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 05:52:05,458 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2020-12-09 05:52:05,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-09 05:52:05,458 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:52:05,458 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:52:05,659 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-09 05:52:05,660 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 05:52:05,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:52:05,661 INFO L82 PathProgramCache]: Analyzing trace with hash 1804975281, now seen corresponding path program 1 times [2020-12-09 05:52:05,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 05:52:05,662 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [860078270] [2020-12-09 05:52:05,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4c7ba0c8-5a4e-4c68-98fd-c9eaab080f46/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 05:52:05,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:52:05,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 05:52:05,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:52:05,828 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 05:52:05,828 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 05:52:05,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [860078270] [2020-12-09 05:52:05,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:52:05,829 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 05:52:05,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603595411] [2020-12-09 05:52:05,830 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 05:52:05,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 05:52:05,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 05:52:05,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 05:52:05,832 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 4 states. [2020-12-09 05:52:05,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:52:05,862 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2020-12-09 05:52:05,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 05:52:05,862 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-09 05:52:05,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:52:05,863 INFO L225 Difference]: With dead ends: 23 [2020-12-09 05:52:05,863 INFO L226 Difference]: Without dead ends: 23 [2020-12-09 05:52:05,864 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 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 05:52:05,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-12-09 05:52:05,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 15. [2020-12-09 05:52:05,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-12-09 05:52:05,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2020-12-09 05:52:05,868 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 7 [2020-12-09 05:52:05,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:52:05,868 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2020-12-09 05:52:05,868 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 05:52:05,868 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2020-12-09 05:52:05,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-09 05:52:05,869 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:52:05,869 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:52:06,069 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-09 05:52:06,071 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 05:52:06,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:52:06,074 INFO L82 PathProgramCache]: Analyzing trace with hash 1804967335, now seen corresponding path program 1 times [2020-12-09 05:52:06,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 05:52:06,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1392527572] [2020-12-09 05:52:06,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4c7ba0c8-5a4e-4c68-98fd-c9eaab080f46/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 05:52:06,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:52:06,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-09 05:52:06,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:52:06,272 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 05:52:06,273 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 05:52:06,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1392527572] [2020-12-09 05:52:06,273 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:52:06,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 05:52:06,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249707358] [2020-12-09 05:52:06,278 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 05:52:06,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 05:52:06,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 05:52:06,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 05:52:06,279 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 5 states. [2020-12-09 05:52:06,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:52:06,338 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2020-12-09 05:52:06,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 05:52:06,339 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-12-09 05:52:06,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:52:06,339 INFO L225 Difference]: With dead ends: 22 [2020-12-09 05:52:06,339 INFO L226 Difference]: Without dead ends: 22 [2020-12-09 05:52:06,340 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 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 05:52:06,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-12-09 05:52:06,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 17. [2020-12-09 05:52:06,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-12-09 05:52:06,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2020-12-09 05:52:06,342 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 7 [2020-12-09 05:52:06,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:52:06,342 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2020-12-09 05:52:06,342 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 05:52:06,342 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2020-12-09 05:52:06,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-09 05:52:06,343 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:52:06,343 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:52:06,543 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-09 05:52:06,544 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 05:52:06,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:52:06,545 INFO L82 PathProgramCache]: Analyzing trace with hash 1806822323, now seen corresponding path program 1 times [2020-12-09 05:52:06,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 05:52:06,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1196670505] [2020-12-09 05:52:06,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4c7ba0c8-5a4e-4c68-98fd-c9eaab080f46/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 05:52:06,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:52:06,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 05:52:06,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:52:06,671 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 05:52:06,671 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 05:52:06,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1196670505] [2020-12-09 05:52:06,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:52:06,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 05:52:06,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198719134] [2020-12-09 05:52:06,672 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 05:52:06,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 05:52:06,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 05:52:06,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 05:52:06,672 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 3 states. [2020-12-09 05:52:06,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:52:06,686 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2020-12-09 05:52:06,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 05:52:06,686 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-12-09 05:52:06,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:52:06,687 INFO L225 Difference]: With dead ends: 21 [2020-12-09 05:52:06,687 INFO L226 Difference]: Without dead ends: 19 [2020-12-09 05:52:06,687 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 05:52:06,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-12-09 05:52:06,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2020-12-09 05:52:06,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-12-09 05:52:06,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-12-09 05:52:06,689 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 7 [2020-12-09 05:52:06,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:52:06,689 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-12-09 05:52:06,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 05:52:06,689 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-12-09 05:52:06,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-09 05:52:06,689 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:52:06,689 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:52:06,890 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-12-09 05:52:06,891 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 05:52:06,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:52:06,893 INFO L82 PathProgramCache]: Analyzing trace with hash 1806814377, now seen corresponding path program 1 times [2020-12-09 05:52:06,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 05:52:06,894 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [822938369] [2020-12-09 05:52:06,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4c7ba0c8-5a4e-4c68-98fd-c9eaab080f46/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 05:52:06,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:52:06,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 05:52:06,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:52:06,990 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 05:52:06,990 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 05:52:06,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [822938369] [2020-12-09 05:52:06,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:52:06,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 05:52:06,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337608581] [2020-12-09 05:52:06,991 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 05:52:06,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 05:52:06,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 05:52:06,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 05:52:06,991 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 4 states. [2020-12-09 05:52:07,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:52:07,014 INFO L93 Difference]: Finished difference Result 14 states and 13 transitions. [2020-12-09 05:52:07,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 05:52:07,014 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-09 05:52:07,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:52:07,014 INFO L225 Difference]: With dead ends: 14 [2020-12-09 05:52:07,014 INFO L226 Difference]: Without dead ends: 12 [2020-12-09 05:52:07,015 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 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 05:52:07,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-12-09 05:52:07,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-12-09 05:52:07,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-12-09 05:52:07,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 11 transitions. [2020-12-09 05:52:07,016 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 11 transitions. Word has length 7 [2020-12-09 05:52:07,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:52:07,016 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 11 transitions. [2020-12-09 05:52:07,016 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 05:52:07,016 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2020-12-09 05:52:07,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 05:52:07,016 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:52:07,017 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:52:07,217 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-12-09 05:52:07,218 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 05:52:07,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:52:07,219 INFO L82 PathProgramCache]: Analyzing trace with hash 119412586, now seen corresponding path program 1 times [2020-12-09 05:52:07,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 05:52:07,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1097635085] [2020-12-09 05:52:07,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4c7ba0c8-5a4e-4c68-98fd-c9eaab080f46/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 05:52:07,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:52:07,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 05:52:07,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:52:07,301 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 05:52:07,302 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 05:52:07,304 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 05:52:07,304 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 05:52:07,304 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-12-09 05:52:07,317 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 05:52:07,317 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 05:52:07,317 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1097635085] [2020-12-09 05:52:07,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:52:07,318 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 05:52:07,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313434444] [2020-12-09 05:52:07,318 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 05:52:07,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 05:52:07,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 05:52:07,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 05:52:07,319 INFO L87 Difference]: Start difference. First operand 12 states and 11 transitions. Second operand 4 states. [2020-12-09 05:52:07,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:52:07,345 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2020-12-09 05:52:07,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 05:52:07,345 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-12-09 05:52:07,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:52:07,346 INFO L225 Difference]: With dead ends: 11 [2020-12-09 05:52:07,346 INFO L226 Difference]: Without dead ends: 11 [2020-12-09 05:52:07,346 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 05:52:07,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-12-09 05:52:07,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-12-09 05:52:07,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-12-09 05:52:07,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 10 transitions. [2020-12-09 05:52:07,348 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 10 transitions. Word has length 8 [2020-12-09 05:52:07,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:52:07,348 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 10 transitions. [2020-12-09 05:52:07,348 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 05:52:07,348 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2020-12-09 05:52:07,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 05:52:07,349 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:52:07,349 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:52:07,549 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-12-09 05:52:07,550 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 05:52:07,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:52:07,551 INFO L82 PathProgramCache]: Analyzing trace with hash -1208620146, now seen corresponding path program 1 times [2020-12-09 05:52:07,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 05:52:07,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1379301528] [2020-12-09 05:52:07,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4c7ba0c8-5a4e-4c68-98fd-c9eaab080f46/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 05:52:07,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:52:07,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-09 05:52:07,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:52:07,689 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 05:52:07,690 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 05:52:07,695 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 05:52:07,716 INFO L625 ElimStorePlain]: treesize reduction 12, result has 55.6 percent of original size [2020-12-09 05:52:07,721 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 05:52:07,724 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 05:52:07,724 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:9, output treesize:15 [2020-12-09 05:52:07,726 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 05:52:07,737 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 05:52:09,848 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 05:52:09,848 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 05:52:09,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1379301528] [2020-12-09 05:52:09,848 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:52:09,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 05:52:09,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505742629] [2020-12-09 05:52:09,849 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-09 05:52:09,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 05:52:09,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-09 05:52:09,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=25, Unknown=1, NotChecked=0, Total=42 [2020-12-09 05:52:09,850 INFO L87 Difference]: Start difference. First operand 11 states and 10 transitions. Second operand 7 states. [2020-12-09 05:52:11,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:52:11,921 INFO L93 Difference]: Finished difference Result 10 states and 9 transitions. [2020-12-09 05:52:11,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 05:52:11,922 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2020-12-09 05:52:11,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:52:11,922 INFO L225 Difference]: With dead ends: 10 [2020-12-09 05:52:11,922 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 05:52:11,923 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=21, Invalid=34, Unknown=1, NotChecked=0, Total=56 [2020-12-09 05:52:11,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 05:52:11,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 05:52:11,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 05:52:11,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 05:52:11,923 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-12-09 05:52:11,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:52:11,926 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 05:52:11,927 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-09 05:52:11,927 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 05:52:11,927 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 05:52:12,127 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-12-09 05:52:12,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 05:52:12 BoogieIcfgContainer [2020-12-09 05:52:12,139 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 05:52:12,140 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 05:52:12,140 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 05:52:12,140 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 05:52:12,142 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:52:05" (3/4) ... [2020-12-09 05:52:12,149 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 05:52:12,168 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-12-09 05:52:12,169 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-09 05:52:12,169 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 05:52:12,197 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_4c7ba0c8-5a4e-4c68-98fd-c9eaab080f46/bin/utaipan/witness.graphml [2020-12-09 05:52:12,197 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 05:52:12,198 INFO L168 Benchmark]: Toolchain (without parser) took 7792.85 ms. Allocated memory was 54.5 MB in the beginning and 92.3 MB in the end (delta: 37.7 MB). Free memory was 32.6 MB in the beginning and 71.4 MB in the end (delta: -38.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 05:52:12,198 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 54.5 MB. Free memory was 37.7 MB in the beginning and 37.6 MB in the end (delta: 73.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 05:52:12,199 INFO L168 Benchmark]: CACSL2BoogieTranslator took 488.92 ms. Allocated memory was 54.5 MB in the beginning and 75.5 MB in the end (delta: 21.0 MB). Free memory was 32.3 MB in the beginning and 46.5 MB in the end (delta: -14.2 MB). Peak memory consumption was 14.5 MB. Max. memory is 16.1 GB. [2020-12-09 05:52:12,199 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.38 ms. Allocated memory is still 75.5 MB. Free memory was 46.5 MB in the beginning and 44.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 05:52:12,199 INFO L168 Benchmark]: Boogie Preprocessor took 17.48 ms. Allocated memory is still 75.5 MB. Free memory was 44.4 MB in the beginning and 43.1 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 05:52:12,200 INFO L168 Benchmark]: RCFGBuilder took 220.10 ms. Allocated memory is still 75.5 MB. Free memory was 43.1 MB in the beginning and 56.3 MB in the end (delta: -13.2 MB). Peak memory consumption was 16.3 MB. Max. memory is 16.1 GB. [2020-12-09 05:52:12,200 INFO L168 Benchmark]: TraceAbstraction took 6971.85 ms. Allocated memory was 75.5 MB in the beginning and 92.3 MB in the end (delta: 16.8 MB). Free memory was 55.7 MB in the beginning and 73.4 MB in the end (delta: -17.6 MB). Peak memory consumption was 46.8 MB. Max. memory is 16.1 GB. [2020-12-09 05:52:12,200 INFO L168 Benchmark]: Witness Printer took 57.34 ms. Allocated memory is still 92.3 MB. Free memory was 73.4 MB in the beginning and 71.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 05:52:12,202 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 54.5 MB. Free memory was 37.7 MB in the beginning and 37.6 MB in the end (delta: 73.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 488.92 ms. Allocated memory was 54.5 MB in the beginning and 75.5 MB in the end (delta: 21.0 MB). Free memory was 32.3 MB in the beginning and 46.5 MB in the end (delta: -14.2 MB). Peak memory consumption was 14.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 32.38 ms. Allocated memory is still 75.5 MB. Free memory was 46.5 MB in the beginning and 44.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 17.48 ms. Allocated memory is still 75.5 MB. Free memory was 44.4 MB in the beginning and 43.1 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 220.10 ms. Allocated memory is still 75.5 MB. Free memory was 43.1 MB in the beginning and 56.3 MB in the end (delta: -13.2 MB). Peak memory consumption was 16.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6971.85 ms. Allocated memory was 75.5 MB in the beginning and 92.3 MB in the end (delta: 16.8 MB). Free memory was 55.7 MB in the beginning and 73.4 MB in the end (delta: -17.6 MB). Peak memory consumption was 46.8 MB. Max. memory is 16.1 GB. * Witness Printer took 57.34 ms. Allocated memory is still 92.3 MB. Free memory was 73.4 MB in the beginning and 71.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 769]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 762]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 762]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 762]: free always succeeds For all program executions holds that free always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.9s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 69 SDtfs, 88 SDslu, 45 SDs, 0 SdLazy, 99 SolverSat, 11 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 51 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=3, 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, 7 MinimizatonAttempts, 15 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 52 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 45 ConstructedInterpolants, 9 QuantifiedInterpolants, 2166 SizeOfPredicates, 14 NumberOfNonLiveVariables, 243 ConjunctsInSsa, 33 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...