./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/termination-crafted/SyntaxSupportPointer01-3.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_0b056543-b1ac-421b-a053-78cfb3eaa0c0/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_0b056543-b1ac-421b-a053-78cfb3eaa0c0/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_0b056543-b1ac-421b-a053-78cfb3eaa0c0/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_0b056543-b1ac-421b-a053-78cfb3eaa0c0/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/termination-crafted/SyntaxSupportPointer01-3.c -s /tmp/vcloud-vcloud-master/worker/run_dir_0b056543-b1ac-421b-a053-78cfb3eaa0c0/bin/utaipan/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_0b056543-b1ac-421b-a053-78cfb3eaa0c0/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 64bit --witnessprinter.graph.data.programhash 3f34751565a9d43a481fab038d13037e70cdccbf ........................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 02:35:03,608 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 02:35:03,610 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 02:35:03,685 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 02:35:03,686 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 02:35:03,712 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 02:35:03,714 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 02:35:03,718 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 02:35:03,726 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 02:35:03,727 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 02:35:03,728 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 02:35:03,730 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 02:35:03,731 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 02:35:03,733 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 02:35:03,734 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 02:35:03,738 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 02:35:03,739 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 02:35:03,747 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 02:35:03,758 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 02:35:03,763 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 02:35:03,773 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 02:35:03,777 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 02:35:03,779 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 02:35:03,784 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 02:35:03,789 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 02:35:03,792 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 02:35:03,793 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 02:35:03,795 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 02:35:03,796 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 02:35:03,798 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 02:35:03,799 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 02:35:03,800 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 02:35:03,803 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 02:35:03,804 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 02:35:03,806 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 02:35:03,806 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 02:35:03,808 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 02:35:03,808 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 02:35:03,808 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 02:35:03,810 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 02:35:03,811 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 02:35:03,814 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_0b056543-b1ac-421b-a053-78cfb3eaa0c0/bin/utaipan/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf [2020-11-30 02:35:03,872 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 02:35:03,872 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 02:35:03,874 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 02:35:03,875 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 02:35:03,875 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 02:35:03,875 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 02:35:03,876 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-30 02:35:03,876 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 02:35:03,876 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 02:35:03,876 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-30 02:35:03,878 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-30 02:35:03,878 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 02:35:03,879 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-30 02:35:03,879 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-30 02:35:03,879 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-30 02:35:03,880 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 02:35:03,880 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 02:35:03,881 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 02:35:03,881 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 02:35:03,881 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 02:35:03,882 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 02:35:03,882 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-30 02:35:03,882 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-30 02:35:03,883 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-30 02:35:03,883 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 02:35:03,883 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 02:35:03,884 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 02:35:03,884 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 02:35:03,884 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 02:35:03,885 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 02:35:03,885 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 02:35:03,885 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 02:35:03,886 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 02:35:03,886 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-30 02:35:03,886 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 02:35:03,887 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 02:35:03,887 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 02:35:03,887 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_0b056543-b1ac-421b-a053-78cfb3eaa0c0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_0b056543-b1ac-421b-a053-78cfb3eaa0c0/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f34751565a9d43a481fab038d13037e70cdccbf [2020-11-30 02:35:04,266 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 02:35:04,316 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 02:35:04,321 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 02:35:04,324 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 02:35:04,325 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 02:35:04,326 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_0b056543-b1ac-421b-a053-78cfb3eaa0c0/bin/utaipan/../../sv-benchmarks/c/termination-crafted/SyntaxSupportPointer01-3.c [2020-11-30 02:35:04,446 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0b056543-b1ac-421b-a053-78cfb3eaa0c0/bin/utaipan/data/67b06e109/c471e61d54534743a55df28b4ccba0d5/FLAG9ad7c1d7a [2020-11-30 02:35:05,103 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 02:35:05,105 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_0b056543-b1ac-421b-a053-78cfb3eaa0c0/sv-benchmarks/c/termination-crafted/SyntaxSupportPointer01-3.c [2020-11-30 02:35:05,118 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0b056543-b1ac-421b-a053-78cfb3eaa0c0/bin/utaipan/data/67b06e109/c471e61d54534743a55df28b4ccba0d5/FLAG9ad7c1d7a [2020-11-30 02:35:05,447 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_0b056543-b1ac-421b-a053-78cfb3eaa0c0/bin/utaipan/data/67b06e109/c471e61d54534743a55df28b4ccba0d5 [2020-11-30 02:35:05,450 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 02:35:05,452 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 02:35:05,454 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 02:35:05,455 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 02:35:05,466 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 02:35:05,468 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:35:05" (1/1) ... [2020-11-30 02:35:05,474 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@642b2cc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:35:05, skipping insertion in model container [2020-11-30 02:35:05,474 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:35:05" (1/1) ... [2020-11-30 02:35:05,485 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 02:35:05,503 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 02:35:05,707 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:35:05,732 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 02:35:05,748 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:35:05,765 INFO L208 MainTranslator]: Completed translation [2020-11-30 02:35:05,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:35:05 WrapperNode [2020-11-30 02:35:05,766 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 02:35:05,768 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 02:35:05,768 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 02:35:05,768 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 02:35:05,779 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:35:05" (1/1) ... [2020-11-30 02:35:05,787 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:35:05" (1/1) ... [2020-11-30 02:35:05,809 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 02:35:05,810 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 02:35:05,810 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 02:35:05,810 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 02:35:05,821 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:35:05" (1/1) ... [2020-11-30 02:35:05,822 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:35:05" (1/1) ... [2020-11-30 02:35:05,824 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:35:05" (1/1) ... [2020-11-30 02:35:05,824 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:35:05" (1/1) ... [2020-11-30 02:35:05,830 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:35:05" (1/1) ... [2020-11-30 02:35:05,834 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:35:05" (1/1) ... [2020-11-30 02:35:05,836 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:35:05" (1/1) ... [2020-11-30 02:35:05,838 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 02:35:05,839 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 02:35:05,839 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 02:35:05,840 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 02:35:05,841 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:35:05" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0b056543-b1ac-421b-a053-78cfb3eaa0c0/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 [2020-11-30 02:35:05,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-30 02:35:05,924 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-30 02:35:05,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 02:35:05,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 02:35:05,925 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-30 02:35:05,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 02:35:06,434 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 02:35:06,435 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-30 02:35:06,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:35:06 BoogieIcfgContainer [2020-11-30 02:35:06,438 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 02:35:06,440 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 02:35:06,440 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 02:35:06,460 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 02:35:06,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 02:35:05" (1/3) ... [2020-11-30 02:35:06,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26e3da9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:35:06, skipping insertion in model container [2020-11-30 02:35:06,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:35:05" (2/3) ... [2020-11-30 02:35:06,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26e3da9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:35:06, skipping insertion in model container [2020-11-30 02:35:06,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:35:06" (3/3) ... [2020-11-30 02:35:06,465 INFO L111 eAbstractionObserver]: Analyzing ICFG SyntaxSupportPointer01-3.c [2020-11-30 02:35:06,476 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 02:35:06,481 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2020-11-30 02:35:06,493 INFO L253 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2020-11-30 02:35:06,524 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 02:35:06,525 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-30 02:35:06,525 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 02:35:06,525 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 02:35:06,526 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 02:35:06,526 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 02:35:06,526 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 02:35:06,526 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 02:35:06,553 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-11-30 02:35:06,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2020-11-30 02:35:06,568 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:35:06,569 INFO L422 BasicCegarLoop]: trace histogram [1, 1] [2020-11-30 02:35:06,570 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-11-30 02:35:06,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:35:06,581 INFO L82 PathProgramCache]: Analyzing trace with hash 2085, now seen corresponding path program 1 times [2020-11-30 02:35:06,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:35:06,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615336122] [2020-11-30 02:35:06,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:35:06,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:35:06,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:35:06,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615336122] [2020-11-30 02:35:06,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:35:06,866 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-30 02:35:06,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420377593] [2020-11-30 02:35:06,873 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:35:06,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:35:06,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:35:06,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:35:06,902 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 3 states. [2020-11-30 02:35:07,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:35:07,024 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2020-11-30 02:35:07,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:35:07,026 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2020-11-30 02:35:07,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:35:07,037 INFO L225 Difference]: With dead ends: 16 [2020-11-30 02:35:07,039 INFO L226 Difference]: Without dead ends: 15 [2020-11-30 02:35:07,042 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:35:07,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-11-30 02:35:07,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-11-30 02:35:07,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-11-30 02:35:07,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2020-11-30 02:35:07,095 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 2 [2020-11-30 02:35:07,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:35:07,096 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2020-11-30 02:35:07,097 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:35:07,097 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-11-30 02:35:07,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2020-11-30 02:35:07,098 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:35:07,098 INFO L422 BasicCegarLoop]: trace histogram [1, 1] [2020-11-30 02:35:07,099 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 02:35:07,099 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-11-30 02:35:07,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:35:07,105 INFO L82 PathProgramCache]: Analyzing trace with hash 2086, now seen corresponding path program 1 times [2020-11-30 02:35:07,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:35:07,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246737516] [2020-11-30 02:35:07,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:35:07,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:35:07,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:35:07,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246737516] [2020-11-30 02:35:07,193 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:35:07,193 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-30 02:35:07,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102773106] [2020-11-30 02:35:07,195 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:35:07,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:35:07,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:35:07,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:35:07,197 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 3 states. [2020-11-30 02:35:07,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:35:07,239 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2020-11-30 02:35:07,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:35:07,240 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2020-11-30 02:35:07,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:35:07,241 INFO L225 Difference]: With dead ends: 11 [2020-11-30 02:35:07,241 INFO L226 Difference]: Without dead ends: 11 [2020-11-30 02:35:07,242 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:35:07,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-11-30 02:35:07,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-11-30 02:35:07,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-11-30 02:35:07,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2020-11-30 02:35:07,247 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 2 [2020-11-30 02:35:07,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:35:07,247 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2020-11-30 02:35:07,247 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:35:07,248 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2020-11-30 02:35:07,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-30 02:35:07,248 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:35:07,249 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-30 02:35:07,249 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 02:35:07,250 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-11-30 02:35:07,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:35:07,251 INFO L82 PathProgramCache]: Analyzing trace with hash 62096841, now seen corresponding path program 1 times [2020-11-30 02:35:07,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:35:07,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798866123] [2020-11-30 02:35:07,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:35:07,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:35:07,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:35:07,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798866123] [2020-11-30 02:35:07,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:35:07,306 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-30 02:35:07,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091668680] [2020-11-30 02:35:07,307 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:35:07,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:35:07,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:35:07,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:35:07,309 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 3 states. [2020-11-30 02:35:07,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:35:07,327 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2020-11-30 02:35:07,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:35:07,329 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-11-30 02:35:07,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:35:07,329 INFO L225 Difference]: With dead ends: 10 [2020-11-30 02:35:07,330 INFO L226 Difference]: Without dead ends: 10 [2020-11-30 02:35:07,330 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:35:07,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-11-30 02:35:07,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-11-30 02:35:07,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-11-30 02:35:07,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2020-11-30 02:35:07,333 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 5 [2020-11-30 02:35:07,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:35:07,333 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2020-11-30 02:35:07,333 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:35:07,334 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2020-11-30 02:35:07,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-30 02:35:07,334 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:35:07,334 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:35:07,334 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 02:35:07,335 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-11-30 02:35:07,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:35:07,339 INFO L82 PathProgramCache]: Analyzing trace with hash -454475988, now seen corresponding path program 1 times [2020-11-30 02:35:07,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:35:07,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837735951] [2020-11-30 02:35:07,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:35:07,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:35:07,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:35:07,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837735951] [2020-11-30 02:35:07,468 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:35:07,469 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 02:35:07,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802698730] [2020-11-30 02:35:07,469 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 02:35:07,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:35:07,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 02:35:07,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 02:35:07,471 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 4 states. [2020-11-30 02:35:07,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:35:07,519 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2020-11-30 02:35:07,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 02:35:07,520 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-30 02:35:07,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:35:07,520 INFO L225 Difference]: With dead ends: 9 [2020-11-30 02:35:07,520 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 02:35:07,521 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 02:35:07,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 02:35:07,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 02:35:07,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 02:35:07,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 02:35:07,522 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2020-11-30 02:35:07,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:35:07,522 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 02:35:07,522 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 02:35:07,523 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 02:35:07,523 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 02:35:07,523 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-30 02:35:07,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 02:35:07 BoogieIcfgContainer [2020-11-30 02:35:07,529 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 02:35:07,531 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 02:35:07,532 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 02:35:07,532 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 02:35:07,533 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:35:06" (3/4) ... [2020-11-30 02:35:07,537 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 02:35:07,551 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-11-30 02:35:07,552 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-11-30 02:35:07,554 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-30 02:35:07,617 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_0b056543-b1ac-421b-a053-78cfb3eaa0c0/bin/utaipan/witness.graphml [2020-11-30 02:35:07,621 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 02:35:07,624 INFO L168 Benchmark]: Toolchain (without parser) took 2170.54 ms. Allocated memory was 75.5 MB in the beginning and 92.3 MB in the end (delta: 16.8 MB). Free memory was 45.0 MB in the beginning and 44.5 MB in the end (delta: 501.3 kB). Peak memory consumption was 17.4 MB. Max. memory is 16.1 GB. [2020-11-30 02:35:07,626 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 75.5 MB. Free memory was 37.4 MB in the beginning and 37.4 MB in the end (delta: 34.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:35:07,630 INFO L168 Benchmark]: CACSL2BoogieTranslator took 312.49 ms. Allocated memory is still 75.5 MB. Free memory was 44.9 MB in the beginning and 55.0 MB in the end (delta: -10.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 02:35:07,632 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.19 ms. Allocated memory is still 75.5 MB. Free memory was 55.0 MB in the beginning and 53.8 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:35:07,633 INFO L168 Benchmark]: Boogie Preprocessor took 28.18 ms. Allocated memory is still 75.5 MB. Free memory was 53.8 MB in the beginning and 52.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:35:07,634 INFO L168 Benchmark]: RCFGBuilder took 598.89 ms. Allocated memory is still 75.5 MB. Free memory was 52.6 MB in the beginning and 38.9 MB in the end (delta: 13.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-30 02:35:07,634 INFO L168 Benchmark]: TraceAbstraction took 1090.86 ms. Allocated memory was 75.5 MB in the beginning and 92.3 MB in the end (delta: 16.8 MB). Free memory was 38.2 MB in the beginning and 46.6 MB in the end (delta: -8.4 MB). Peak memory consumption was 9.8 MB. Max. memory is 16.1 GB. [2020-11-30 02:35:07,635 INFO L168 Benchmark]: Witness Printer took 89.95 ms. Allocated memory is still 92.3 MB. Free memory was 46.6 MB in the beginning and 44.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:35:07,642 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 75.5 MB. Free memory was 37.4 MB in the beginning and 37.4 MB in the end (delta: 34.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 312.49 ms. Allocated memory is still 75.5 MB. Free memory was 44.9 MB in the beginning and 55.0 MB in the end (delta: -10.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.19 ms. Allocated memory is still 75.5 MB. Free memory was 55.0 MB in the beginning and 53.8 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.18 ms. Allocated memory is still 75.5 MB. Free memory was 53.8 MB in the beginning and 52.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 598.89 ms. Allocated memory is still 75.5 MB. Free memory was 52.6 MB in the beginning and 38.9 MB in the end (delta: 13.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1090.86 ms. Allocated memory was 75.5 MB in the beginning and 92.3 MB in the end (delta: 16.8 MB). Free memory was 38.2 MB in the beginning and 46.6 MB in the end (delta: -8.4 MB). Peak memory consumption was 9.8 MB. Max. memory is 16.1 GB. * Witness Printer took 89.95 ms. Allocated memory is still 92.3 MB. Free memory was 46.6 MB in the beginning and 44.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 15]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 18]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 15]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 18]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 16]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 16]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 13]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 16]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 18]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 16]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 10 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.0s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 20 SDtfs, 31 SDslu, 3 SDs, 0 SdLazy, 34 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 292 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...