./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/termination-crafted/SyntaxSupportPointer01-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- 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_f8fc65b4-2a5c-425f-ba9b-807a4880f71a/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_f8fc65b4-2a5c-425f-ba9b-807a4880f71a/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f8fc65b4-2a5c-425f-ba9b-807a4880f71a/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f8fc65b4-2a5c-425f-ba9b-807a4880f71a/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/termination-crafted/SyntaxSupportPointer01-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_f8fc65b4-2a5c-425f-ba9b-807a4880f71a/bin/utaipan/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f8fc65b4-2a5c-425f-ba9b-807a4880f71a/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 f2a8d3919c0496882213752e07135061fdbafdf6 .......................................................................................................................................................................................................................................................................................................................................................................................................... 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 19:03:32,632 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 19:03:32,634 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 19:03:32,670 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 19:03:32,671 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 19:03:32,672 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 19:03:32,673 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 19:03:32,676 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 19:03:32,678 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 19:03:32,679 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 19:03:32,680 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 19:03:32,681 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 19:03:32,682 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 19:03:32,683 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 19:03:32,684 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 19:03:32,686 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 19:03:32,686 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 19:03:32,687 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 19:03:32,690 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 19:03:32,692 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 19:03:32,694 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 19:03:32,695 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 19:03:32,697 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 19:03:32,697 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 19:03:32,701 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 19:03:32,701 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 19:03:32,701 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 19:03:32,702 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 19:03:32,703 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 19:03:32,704 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 19:03:32,705 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 19:03:32,706 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 19:03:32,706 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 19:03:32,707 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 19:03:32,708 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 19:03:32,709 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 19:03:32,709 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 19:03:32,710 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 19:03:32,710 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 19:03:32,711 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 19:03:32,711 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 19:03:32,712 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f8fc65b4-2a5c-425f-ba9b-807a4880f71a/bin/utaipan/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf [2020-12-09 19:03:32,736 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 19:03:32,736 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 19:03:32,737 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 19:03:32,737 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 19:03:32,737 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 19:03:32,737 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 19:03:32,737 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 19:03:32,737 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 19:03:32,738 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 19:03:32,738 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 19:03:32,738 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 19:03:32,738 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 19:03:32,738 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 19:03:32,739 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 19:03:32,739 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 19:03:32,739 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-09 19:03:32,740 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-09 19:03:32,740 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 19:03:32,740 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-09 19:03:32,740 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 19:03:32,740 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 19:03:32,740 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-09 19:03:32,741 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-09 19:03:32,741 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-09 19:03:32,741 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 19:03:32,741 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 19:03:32,741 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 19:03:32,741 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 19:03:32,742 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 19:03:32,742 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 19:03:32,742 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 19:03:32,742 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 19:03:32,742 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 19:03:32,743 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 19:03:32,743 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 19:03:32,743 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 19:03:32,743 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_f8fc65b4-2a5c-425f-ba9b-807a4880f71a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_f8fc65b4-2a5c-425f-ba9b-807a4880f71a/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f2a8d3919c0496882213752e07135061fdbafdf6 [2020-12-09 19:03:32,942 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 19:03:32,961 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 19:03:32,964 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 19:03:32,964 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 19:03:32,965 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 19:03:32,966 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f8fc65b4-2a5c-425f-ba9b-807a4880f71a/bin/utaipan/../../sv-benchmarks/c/termination-crafted/SyntaxSupportPointer01-1.c [2020-12-09 19:03:33,011 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f8fc65b4-2a5c-425f-ba9b-807a4880f71a/bin/utaipan/data/e59cff9c1/c2dbf1dee38247b5971966f208c25fed/FLAG2a0bd7678 [2020-12-09 19:03:33,361 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 19:03:33,361 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f8fc65b4-2a5c-425f-ba9b-807a4880f71a/sv-benchmarks/c/termination-crafted/SyntaxSupportPointer01-1.c [2020-12-09 19:03:33,365 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f8fc65b4-2a5c-425f-ba9b-807a4880f71a/bin/utaipan/data/e59cff9c1/c2dbf1dee38247b5971966f208c25fed/FLAG2a0bd7678 [2020-12-09 19:03:33,794 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f8fc65b4-2a5c-425f-ba9b-807a4880f71a/bin/utaipan/data/e59cff9c1/c2dbf1dee38247b5971966f208c25fed [2020-12-09 19:03:33,797 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 19:03:33,799 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 19:03:33,801 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 19:03:33,801 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 19:03:33,805 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 19:03:33,806 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:03:33" (1/1) ... [2020-12-09 19:03:33,807 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5543882a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:03:33, skipping insertion in model container [2020-12-09 19:03:33,807 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:03:33" (1/1) ... [2020-12-09 19:03:33,812 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 19:03:33,819 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 19:03:33,912 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 19:03:33,918 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 19:03:33,926 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 19:03:33,935 INFO L208 MainTranslator]: Completed translation [2020-12-09 19:03:33,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:03:33 WrapperNode [2020-12-09 19:03:33,936 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 19:03:33,936 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 19:03:33,937 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 19:03:33,937 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 19:03:33,942 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:03:33" (1/1) ... [2020-12-09 19:03:33,946 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:03:33" (1/1) ... [2020-12-09 19:03:33,957 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 19:03:33,958 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 19:03:33,958 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 19:03:33,958 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 19:03:33,963 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:03:33" (1/1) ... [2020-12-09 19:03:33,964 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:03:33" (1/1) ... [2020-12-09 19:03:33,965 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:03:33" (1/1) ... [2020-12-09 19:03:33,965 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:03:33" (1/1) ... [2020-12-09 19:03:33,968 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:03:33" (1/1) ... [2020-12-09 19:03:33,970 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:03:33" (1/1) ... [2020-12-09 19:03:33,971 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:03:33" (1/1) ... [2020-12-09 19:03:33,972 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 19:03:33,973 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 19:03:33,973 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 19:03:33,973 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 19:03:33,973 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:03:33" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f8fc65b4-2a5c-425f-ba9b-807a4880f71a/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 19:03:34,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-09 19:03:34,032 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-09 19:03:34,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 19:03:34,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 19:03:34,032 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-09 19:03:34,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 19:03:34,221 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 19:03:34,221 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2020-12-09 19:03:34,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:03:34 BoogieIcfgContainer [2020-12-09 19:03:34,223 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 19:03:34,224 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 19:03:34,224 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 19:03:34,226 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 19:03:34,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 07:03:33" (1/3) ... [2020-12-09 19:03:34,227 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f8950cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:03:34, skipping insertion in model container [2020-12-09 19:03:34,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:03:33" (2/3) ... [2020-12-09 19:03:34,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f8950cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:03:34, skipping insertion in model container [2020-12-09 19:03:34,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:03:34" (3/3) ... [2020-12-09 19:03:34,229 INFO L111 eAbstractionObserver]: Analyzing ICFG SyntaxSupportPointer01-1.c [2020-12-09 19:03:34,240 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 19:03:34,242 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 12 error locations. [2020-12-09 19:03:34,250 INFO L253 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2020-12-09 19:03:34,264 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 19:03:34,264 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-09 19:03:34,264 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 19:03:34,264 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 19:03:34,264 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 19:03:34,264 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 19:03:34,264 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 19:03:34,264 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 19:03:34,274 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-12-09 19:03:34,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2020-12-09 19:03:34,278 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:03:34,278 INFO L422 BasicCegarLoop]: trace histogram [1, 1] [2020-12-09 19:03:34,279 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-09 19:03:34,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:03:34,282 INFO L82 PathProgramCache]: Analyzing trace with hash 2205, now seen corresponding path program 1 times [2020-12-09 19:03:34,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:03:34,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772408440] [2020-12-09 19:03:34,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:03:34,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:03:34,391 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 19:03:34,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772408440] [2020-12-09 19:03:34,392 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:03:34,392 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-09 19:03:34,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278493607] [2020-12-09 19:03:34,397 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 19:03:34,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:03:34,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 19:03:34,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 19:03:34,413 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 3 states. [2020-12-09 19:03:34,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:03:34,455 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2020-12-09 19:03:34,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 19:03:34,457 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2020-12-09 19:03:34,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:03:34,464 INFO L225 Difference]: With dead ends: 18 [2020-12-09 19:03:34,464 INFO L226 Difference]: Without dead ends: 17 [2020-12-09 19:03:34,465 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 [2020-12-09 19:03:34,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-12-09 19:03:34,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-12-09 19:03:34,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-12-09 19:03:34,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-12-09 19:03:34,493 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 2 [2020-12-09 19:03:34,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:03:34,494 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-12-09 19:03:34,494 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 19:03:34,494 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-12-09 19:03:34,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2020-12-09 19:03:34,494 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:03:34,494 INFO L422 BasicCegarLoop]: trace histogram [1, 1] [2020-12-09 19:03:34,495 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 19:03:34,495 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-09 19:03:34,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:03:34,496 INFO L82 PathProgramCache]: Analyzing trace with hash 2206, now seen corresponding path program 1 times [2020-12-09 19:03:34,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:03:34,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113148923] [2020-12-09 19:03:34,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:03:34,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:03:34,539 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 19:03:34,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113148923] [2020-12-09 19:03:34,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:03:34,540 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-09 19:03:34,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945092435] [2020-12-09 19:03:34,541 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 19:03:34,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:03:34,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 19:03:34,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 19:03:34,543 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 3 states. [2020-12-09 19:03:34,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:03:34,563 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2020-12-09 19:03:34,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 19:03:34,564 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2020-12-09 19:03:34,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:03:34,565 INFO L225 Difference]: With dead ends: 12 [2020-12-09 19:03:34,565 INFO L226 Difference]: Without dead ends: 12 [2020-12-09 19:03:34,565 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 [2020-12-09 19:03:34,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-12-09 19:03:34,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-12-09 19:03:34,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-12-09 19:03:34,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2020-12-09 19:03:34,568 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 2 [2020-12-09 19:03:34,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:03:34,568 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2020-12-09 19:03:34,568 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 19:03:34,568 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-12-09 19:03:34,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 19:03:34,569 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:03:34,569 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 19:03:34,569 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 19:03:34,569 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-09 19:03:34,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:03:34,570 INFO L82 PathProgramCache]: Analyzing trace with hash 2072725194, now seen corresponding path program 1 times [2020-12-09 19:03:34,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:03:34,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947372759] [2020-12-09 19:03:34,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:03:34,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:03:34,607 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 19:03:34,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947372759] [2020-12-09 19:03:34,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:03:34,607 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-09 19:03:34,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961019419] [2020-12-09 19:03:34,608 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 19:03:34,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:03:34,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 19:03:34,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 19:03:34,610 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 3 states. [2020-12-09 19:03:34,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:03:34,619 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2020-12-09 19:03:34,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 19:03:34,620 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-12-09 19:03:34,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:03:34,621 INFO L225 Difference]: With dead ends: 11 [2020-12-09 19:03:34,621 INFO L226 Difference]: Without dead ends: 11 [2020-12-09 19:03:34,621 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 [2020-12-09 19:03:34,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-12-09 19:03:34,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-12-09 19:03:34,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-12-09 19:03:34,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2020-12-09 19:03:34,624 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 6 [2020-12-09 19:03:34,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:03:34,624 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2020-12-09 19:03:34,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 19:03:34,624 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2020-12-09 19:03:34,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 19:03:34,625 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:03:34,625 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:03:34,625 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 19:03:34,625 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-09 19:03:34,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:03:34,626 INFO L82 PathProgramCache]: Analyzing trace with hash -975911827, now seen corresponding path program 1 times [2020-12-09 19:03:34,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:03:34,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126135446] [2020-12-09 19:03:34,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:03:34,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:03:34,673 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 19:03:34,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126135446] [2020-12-09 19:03:34,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:03:34,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 19:03:34,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138838813] [2020-12-09 19:03:34,675 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 19:03:34,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:03:34,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 19:03:34,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 19:03:34,676 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 4 states. [2020-12-09 19:03:34,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:03:34,700 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2020-12-09 19:03:34,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 19:03:34,700 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-12-09 19:03:34,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:03:34,701 INFO L225 Difference]: With dead ends: 10 [2020-12-09 19:03:34,701 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 19:03:34,701 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 [2020-12-09 19:03:34,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 19:03:34,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 19:03:34,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 19:03:34,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 19:03:34,702 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2020-12-09 19:03:34,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:03:34,702 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 19:03:34,703 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 19:03:34,703 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 19:03:34,703 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 19:03:34,703 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 19:03:34,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 07:03:34 BoogieIcfgContainer [2020-12-09 19:03:34,707 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 19:03:34,708 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 19:03:34,708 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 19:03:34,708 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 19:03:34,708 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:03:34" (3/4) ... [2020-12-09 19:03:34,711 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 19:03:34,720 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-12-09 19:03:34,720 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-12-09 19:03:34,720 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-09 19:03:34,744 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_f8fc65b4-2a5c-425f-ba9b-807a4880f71a/bin/utaipan/witness.graphml [2020-12-09 19:03:34,744 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 19:03:34,745 INFO L168 Benchmark]: Toolchain (without parser) took 946.14 ms. Allocated memory is still 94.4 MB. Free memory was 54.3 MB in the beginning and 59.4 MB in the end (delta: -5.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 19:03:34,746 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 94.4 MB. Free memory is still 70.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 19:03:34,746 INFO L168 Benchmark]: CACSL2BoogieTranslator took 135.09 ms. Allocated memory is still 94.4 MB. Free memory was 54.2 MB in the beginning and 69.7 MB in the end (delta: -15.6 MB). Peak memory consumption was 7.0 MB. Max. memory is 16.1 GB. [2020-12-09 19:03:34,746 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.06 ms. Allocated memory is still 94.4 MB. Free memory was 69.7 MB in the beginning and 68.3 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 19:03:34,747 INFO L168 Benchmark]: Boogie Preprocessor took 14.14 ms. Allocated memory is still 94.4 MB. Free memory was 68.3 MB in the beginning and 67.3 MB in the end (delta: 986.6 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 19:03:34,747 INFO L168 Benchmark]: RCFGBuilder took 250.07 ms. Allocated memory is still 94.4 MB. Free memory was 67.3 MB in the beginning and 67.7 MB in the end (delta: -394.8 kB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-09 19:03:34,748 INFO L168 Benchmark]: TraceAbstraction took 483.43 ms. Allocated memory is still 94.4 MB. Free memory was 67.3 MB in the beginning and 61.5 MB in the end (delta: 5.8 MB). Peak memory consumption was 9.2 MB. Max. memory is 16.1 GB. [2020-12-09 19:03:34,748 INFO L168 Benchmark]: Witness Printer took 36.68 ms. Allocated memory is still 94.4 MB. Free memory was 61.5 MB in the beginning and 59.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 19:03:34,751 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 94.4 MB. Free memory is still 70.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 135.09 ms. Allocated memory is still 94.4 MB. Free memory was 54.2 MB in the beginning and 69.7 MB in the end (delta: -15.6 MB). Peak memory consumption was 7.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 21.06 ms. Allocated memory is still 94.4 MB. Free memory was 69.7 MB in the beginning and 68.3 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 14.14 ms. Allocated memory is still 94.4 MB. Free memory was 68.3 MB in the beginning and 67.3 MB in the end (delta: 986.6 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 250.07 ms. Allocated memory is still 94.4 MB. Free memory was 67.3 MB in the beginning and 67.7 MB in the end (delta: -394.8 kB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 483.43 ms. Allocated memory is still 94.4 MB. Free memory was 67.3 MB in the beginning and 61.5 MB in the end (delta: 5.8 MB). Peak memory consumption was 9.2 MB. Max. memory is 16.1 GB. * Witness Printer took 36.68 ms. Allocated memory is still 94.4 MB. Free memory was 61.5 MB in the beginning and 59.4 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: 17]: pointer dereference always succeeds For all program executions holds that pointer dereference 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: 17]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 19]: 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: 19]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 17]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 19]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 17]: 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 - AllSpecificationsHoldResult: All specifications hold 12 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 23 locations, 12 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.4s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 20 SDtfs, 34 SDslu, 3 SDs, 0 SdLazy, 40 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s 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=23occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 415 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...