./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/diff_usafe.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd0c9ff-4bd6-49a4-b1f5-8a87ee5b23f2/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd0c9ff-4bd6-49a4-b1f5-8a87ee5b23f2/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd0c9ff-4bd6-49a4-b1f5-8a87ee5b23f2/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd0c9ff-4bd6-49a4-b1f5-8a87ee5b23f2/bin/utaipan-vmNK8stdcF/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/diff_usafe.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd0c9ff-4bd6-49a4-b1f5-8a87ee5b23f2/bin/utaipan-vmNK8stdcF/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd0c9ff-4bd6-49a4-b1f5-8a87ee5b23f2/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 60b44baec8d5c42666f1f962a9b95cfd7e6c75178322ade094b7a047963f4b64 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:16:58,994 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:16:58,996 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:16:59,052 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:16:59,053 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:16:59,057 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:16:59,059 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:16:59,064 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:16:59,066 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:16:59,075 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:16:59,076 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:16:59,078 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:16:59,078 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:16:59,081 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:16:59,083 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:16:59,092 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:16:59,093 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:16:59,094 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:16:59,096 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:16:59,098 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:16:59,100 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:16:59,104 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:16:59,108 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:16:59,109 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:16:59,118 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:16:59,119 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:16:59,119 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:16:59,120 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:16:59,120 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:16:59,122 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:16:59,122 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:16:59,123 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:16:59,124 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:16:59,125 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:16:59,126 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:16:59,126 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:16:59,127 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:16:59,127 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:16:59,134 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:16:59,135 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:16:59,136 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:16:59,137 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd0c9ff-4bd6-49a4-b1f5-8a87ee5b23f2/bin/utaipan-vmNK8stdcF/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-12 22:16:59,183 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:16:59,184 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:16:59,184 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:16:59,185 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:16:59,185 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:16:59,185 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:16:59,185 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:16:59,185 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 22:16:59,186 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:16:59,186 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:16:59,186 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 22:16:59,186 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 22:16:59,186 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:16:59,187 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 22:16:59,187 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 22:16:59,187 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 22:16:59,188 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-12 22:16:59,188 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-12 22:16:59,188 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:16:59,188 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 22:16:59,188 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-12 22:16:59,189 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 22:16:59,189 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 22:16:59,189 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:16:59,189 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-12 22:16:59,189 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-12 22:16:59,190 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-12 22:16:59,190 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:16:59,190 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:16:59,190 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 22:16:59,190 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:16:59,190 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:16:59,191 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:16:59,191 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:16:59,191 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:16:59,191 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:16:59,191 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 22:16:59,192 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 22:16:59,192 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:16:59,192 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:16:59,192 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd0c9ff-4bd6-49a4-b1f5-8a87ee5b23f2/bin/utaipan-vmNK8stdcF/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd0c9ff-4bd6-49a4-b1f5-8a87ee5b23f2/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 60b44baec8d5c42666f1f962a9b95cfd7e6c75178322ade094b7a047963f4b64 [2021-11-12 22:16:59,442 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:16:59,464 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:16:59,466 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:16:59,468 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:16:59,469 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:16:59,470 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd0c9ff-4bd6-49a4-b1f5-8a87ee5b23f2/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/array-memsafety/diff_usafe.c [2021-11-12 22:16:59,535 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd0c9ff-4bd6-49a4-b1f5-8a87ee5b23f2/bin/utaipan-vmNK8stdcF/data/97cc8565d/d22f99dc1ac64e80be124da783f7a065/FLAG5338392ee [2021-11-12 22:17:00,013 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:17:00,013 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd0c9ff-4bd6-49a4-b1f5-8a87ee5b23f2/sv-benchmarks/c/array-memsafety/diff_usafe.c [2021-11-12 22:17:00,022 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd0c9ff-4bd6-49a4-b1f5-8a87ee5b23f2/bin/utaipan-vmNK8stdcF/data/97cc8565d/d22f99dc1ac64e80be124da783f7a065/FLAG5338392ee [2021-11-12 22:17:00,404 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd0c9ff-4bd6-49a4-b1f5-8a87ee5b23f2/bin/utaipan-vmNK8stdcF/data/97cc8565d/d22f99dc1ac64e80be124da783f7a065 [2021-11-12 22:17:00,407 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:17:00,408 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:17:00,410 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:17:00,410 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:17:00,426 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:17:00,426 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:17:00" (1/1) ... [2021-11-12 22:17:00,428 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@190ccd6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:17:00, skipping insertion in model container [2021-11-12 22:17:00,428 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:17:00" (1/1) ... [2021-11-12 22:17:00,438 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:17:00,454 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:17:00,606 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:17:00,633 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 22:17:00,649 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:17:00,661 INFO L208 MainTranslator]: Completed translation [2021-11-12 22:17:00,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:17:00 WrapperNode [2021-11-12 22:17:00,662 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:17:00,663 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 22:17:00,664 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 22:17:00,664 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 22:17:00,672 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:17:00" (1/1) ... [2021-11-12 22:17:00,678 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:17:00" (1/1) ... [2021-11-12 22:17:00,698 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 22:17:00,699 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 22:17:00,699 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 22:17:00,699 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 22:17:00,707 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:17:00" (1/1) ... [2021-11-12 22:17:00,707 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:17:00" (1/1) ... [2021-11-12 22:17:00,709 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:17:00" (1/1) ... [2021-11-12 22:17:00,709 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:17:00" (1/1) ... [2021-11-12 22:17:00,714 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:17:00" (1/1) ... [2021-11-12 22:17:00,718 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:17:00" (1/1) ... [2021-11-12 22:17:00,719 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:17:00" (1/1) ... [2021-11-12 22:17:00,721 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 22:17:00,722 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 22:17:00,722 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 22:17:00,723 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 22:17:00,724 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:17:00" (1/1) ... [2021-11-12 22:17:00,731 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:17:00,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd0c9ff-4bd6-49a4-b1f5-8a87ee5b23f2/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:17:00,757 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd0c9ff-4bd6-49a4-b1f5-8a87ee5b23f2/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 22:17:00,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd0c9ff-4bd6-49a4-b1f5-8a87ee5b23f2/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 22:17:00,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-12 22:17:00,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 22:17:00,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 22:17:00,795 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-12 22:17:01,080 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 22:17:01,080 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-12 22:17:01,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:17:01 BoogieIcfgContainer [2021-11-12 22:17:01,083 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 22:17:01,085 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 22:17:01,085 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 22:17:01,089 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 22:17:01,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 10:17:00" (1/3) ... [2021-11-12 22:17:01,090 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51c89616 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:17:01, skipping insertion in model container [2021-11-12 22:17:01,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:17:00" (2/3) ... [2021-11-12 22:17:01,091 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51c89616 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:17:01, skipping insertion in model container [2021-11-12 22:17:01,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:17:01" (3/3) ... [2021-11-12 22:17:01,092 INFO L111 eAbstractionObserver]: Analyzing ICFG diff_usafe.c [2021-11-12 22:17:01,098 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 22:17:01,098 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2021-11-12 22:17:01,147 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 22:17:01,156 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-12 22:17:01,156 INFO L340 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2021-11-12 22:17:01,197 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 10 states have (on average 2.2) internal successors, (22), 19 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:17:01,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-12 22:17:01,204 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:17:01,205 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-12 22:17:01,206 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 5 more)] === [2021-11-12 22:17:01,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:17:01,224 INFO L85 PathProgramCache]: Analyzing trace with hash 87537, now seen corresponding path program 1 times [2021-11-12 22:17:01,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:17:01,233 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937984914] [2021-11-12 22:17:01,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:17:01,235 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:17:01,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:17:01,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:17:01,449 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:17:01,451 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937984914] [2021-11-12 22:17:01,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937984914] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:17:01,453 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:17:01,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-12 22:17:01,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425813442] [2021-11-12 22:17:01,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:17:01,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:17:01,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:17:01,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:17:01,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:17:01,501 INFO L87 Difference]: Start difference. First operand has 20 states, 10 states have (on average 2.2) internal successors, (22), 19 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:17:01,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:17:01,565 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2021-11-12 22:17:01,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:17:01,568 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-11-12 22:17:01,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:17:01,579 INFO L225 Difference]: With dead ends: 19 [2021-11-12 22:17:01,579 INFO L226 Difference]: Without dead ends: 17 [2021-11-12 22:17:01,584 INFO L932 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 [2021-11-12 22:17:01,594 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 19 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.66ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47.52ms IncrementalHoareTripleChecker+Time [2021-11-12 22:17:01,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 9 Invalid, 12 Unknown, 0 Unchecked, 1.66ms Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 47.52ms Time] [2021-11-12 22:17:01,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-11-12 22:17:01,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-11-12 22:17:01,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 9 states have (on average 2.111111111111111) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:17:01,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2021-11-12 22:17:01,637 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 3 [2021-11-12 22:17:01,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:17:01,637 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-11-12 22:17:01,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:17:01,638 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2021-11-12 22:17:01,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-12 22:17:01,638 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:17:01,639 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-12 22:17:01,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-12 22:17:01,640 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 5 more)] === [2021-11-12 22:17:01,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:17:01,645 INFO L85 PathProgramCache]: Analyzing trace with hash 2662612, now seen corresponding path program 1 times [2021-11-12 22:17:01,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:17:01,646 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541663711] [2021-11-12 22:17:01,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:17:01,647 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:17:01,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 22:17:01,695 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-12 22:17:01,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 22:17:01,734 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-12 22:17:01,734 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-12 22:17:01,736 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0REQUIRES_VIOLATION (8 of 9 remaining) [2021-11-12 22:17:01,739 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION (7 of 9 remaining) [2021-11-12 22:17:01,739 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION (6 of 9 remaining) [2021-11-12 22:17:01,739 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION (5 of 9 remaining) [2021-11-12 22:17:01,740 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION (4 of 9 remaining) [2021-11-12 22:17:01,740 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION (3 of 9 remaining) [2021-11-12 22:17:01,740 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION (2 of 9 remaining) [2021-11-12 22:17:01,741 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION (1 of 9 remaining) [2021-11-12 22:17:01,741 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (0 of 9 remaining) [2021-11-12 22:17:01,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-12 22:17:01,745 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-12 22:17:01,749 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-12 22:17:01,760 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.translateProgramExecution(InlinerBacktranslator.java:203) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:216) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:206) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getProgramExecutionAsString(CounterExampleResult.java:155) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getLongDescription(CounterExampleResult.java:134) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportLocationResults(TraceAbstractionStarter.java:586) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:181) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-12 22:17:01,764 INFO L158 Benchmark]: Toolchain (without parser) took 1355.43ms. Allocated memory is still 117.4MB. Free memory was 86.5MB in the beginning and 91.5MB in the end (delta: -5.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:17:01,771 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 96.5MB. Free memory is still 56.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:17:01,771 INFO L158 Benchmark]: CACSL2BoogieTranslator took 252.69ms. Allocated memory is still 117.4MB. Free memory was 86.3MB in the beginning and 95.1MB in the end (delta: -8.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-12 22:17:01,772 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.71ms. Allocated memory is still 117.4MB. Free memory was 95.1MB in the beginning and 93.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:17:01,773 INFO L158 Benchmark]: Boogie Preprocessor took 22.78ms. Allocated memory is still 117.4MB. Free memory was 93.5MB in the beginning and 92.3MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 22:17:01,775 INFO L158 Benchmark]: RCFGBuilder took 361.03ms. Allocated memory is still 117.4MB. Free memory was 92.3MB in the beginning and 80.5MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-12 22:17:01,776 INFO L158 Benchmark]: TraceAbstraction took 678.11ms. Allocated memory is still 117.4MB. Free memory was 80.1MB in the beginning and 91.5MB in the end (delta: -11.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:17:01,779 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 96.5MB. Free memory is still 56.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 252.69ms. Allocated memory is still 117.4MB. Free memory was 86.3MB in the beginning and 95.1MB in the end (delta: -8.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.71ms. Allocated memory is still 117.4MB. Free memory was 95.1MB in the beginning and 93.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 22.78ms. Allocated memory is still 117.4MB. Free memory was 93.5MB in the beginning and 92.3MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 361.03ms. Allocated memory is still 117.4MB. Free memory was 92.3MB in the beginning and 80.5MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 678.11ms. Allocated memory is still 117.4MB. Free memory was 80.1MB in the beginning and 91.5MB in the end (delta: -11.4MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-12 22:17:01,838 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd0c9ff-4bd6-49a4-b1f5-8a87ee5b23f2/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd0c9ff-4bd6-49a4-b1f5-8a87ee5b23f2/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd0c9ff-4bd6-49a4-b1f5-8a87ee5b23f2/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd0c9ff-4bd6-49a4-b1f5-8a87ee5b23f2/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd0c9ff-4bd6-49a4-b1f5-8a87ee5b23f2/bin/utaipan-vmNK8stdcF/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/diff_usafe.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd0c9ff-4bd6-49a4-b1f5-8a87ee5b23f2/bin/utaipan-vmNK8stdcF/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd0c9ff-4bd6-49a4-b1f5-8a87ee5b23f2/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 60b44baec8d5c42666f1f962a9b95cfd7e6c75178322ade094b7a047963f4b64 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:17:04,265 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:17:04,267 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:17:04,299 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:17:04,299 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:17:04,301 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:17:04,303 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:17:04,305 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:17:04,308 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:17:04,309 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:17:04,310 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:17:04,312 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:17:04,313 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:17:04,314 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:17:04,316 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:17:04,317 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:17:04,319 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:17:04,320 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:17:04,322 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:17:04,325 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:17:04,327 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:17:04,329 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:17:04,331 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:17:04,332 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:17:04,336 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:17:04,337 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:17:04,337 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:17:04,338 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:17:04,339 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:17:04,340 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:17:04,341 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:17:04,342 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:17:04,343 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:17:04,344 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:17:04,345 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:17:04,346 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:17:04,347 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:17:04,355 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:17:04,355 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:17:04,361 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:17:04,362 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:17:04,363 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd0c9ff-4bd6-49a4-b1f5-8a87ee5b23f2/bin/utaipan-vmNK8stdcF/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-12 22:17:04,405 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:17:04,406 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:17:04,407 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:17:04,408 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:17:04,408 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:17:04,408 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:17:04,409 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:17:04,409 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:17:04,409 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:17:04,409 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:17:04,411 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-12 22:17:04,412 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-12 22:17:04,412 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:17:04,412 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 22:17:04,413 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-12 22:17:04,413 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 22:17:04,413 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 22:17:04,413 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:17:04,414 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-12 22:17:04,414 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-12 22:17:04,414 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-12 22:17:04,414 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:17:04,415 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:17:04,415 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 22:17:04,415 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 22:17:04,415 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 22:17:04,416 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:17:04,416 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:17:04,416 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 22:17:04,416 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:17:04,417 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:17:04,417 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:17:04,417 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:17:04,418 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 22:17:04,418 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 22:17:04,418 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:17:04,418 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:17:04,419 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd0c9ff-4bd6-49a4-b1f5-8a87ee5b23f2/bin/utaipan-vmNK8stdcF/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd0c9ff-4bd6-49a4-b1f5-8a87ee5b23f2/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 60b44baec8d5c42666f1f962a9b95cfd7e6c75178322ade094b7a047963f4b64 [2021-11-12 22:17:04,839 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:17:04,874 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:17:04,877 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:17:04,878 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:17:04,879 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:17:04,881 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd0c9ff-4bd6-49a4-b1f5-8a87ee5b23f2/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/array-memsafety/diff_usafe.c [2021-11-12 22:17:04,962 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd0c9ff-4bd6-49a4-b1f5-8a87ee5b23f2/bin/utaipan-vmNK8stdcF/data/aa5708dad/cf738210aa9749e996e634f8711086fe/FLAG22f017084 [2021-11-12 22:17:05,567 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:17:05,568 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd0c9ff-4bd6-49a4-b1f5-8a87ee5b23f2/sv-benchmarks/c/array-memsafety/diff_usafe.c [2021-11-12 22:17:05,574 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd0c9ff-4bd6-49a4-b1f5-8a87ee5b23f2/bin/utaipan-vmNK8stdcF/data/aa5708dad/cf738210aa9749e996e634f8711086fe/FLAG22f017084 [2021-11-12 22:17:05,932 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd0c9ff-4bd6-49a4-b1f5-8a87ee5b23f2/bin/utaipan-vmNK8stdcF/data/aa5708dad/cf738210aa9749e996e634f8711086fe [2021-11-12 22:17:05,937 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:17:05,939 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:17:05,943 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:17:05,943 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:17:05,947 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:17:05,949 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:17:05" (1/1) ... [2021-11-12 22:17:05,951 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bf3ae19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:17:05, skipping insertion in model container [2021-11-12 22:17:05,952 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:17:05" (1/1) ... [2021-11-12 22:17:05,961 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:17:05,979 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:17:06,199 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:17:06,214 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 22:17:06,245 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:17:06,271 INFO L208 MainTranslator]: Completed translation [2021-11-12 22:17:06,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:17:06 WrapperNode [2021-11-12 22:17:06,273 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:17:06,275 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 22:17:06,275 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 22:17:06,275 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 22:17:06,311 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:17:06" (1/1) ... [2021-11-12 22:17:06,329 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:17:06" (1/1) ... [2021-11-12 22:17:06,357 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 22:17:06,358 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 22:17:06,358 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 22:17:06,358 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 22:17:06,366 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:17:06" (1/1) ... [2021-11-12 22:17:06,367 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:17:06" (1/1) ... [2021-11-12 22:17:06,383 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:17:06" (1/1) ... [2021-11-12 22:17:06,383 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:17:06" (1/1) ... [2021-11-12 22:17:06,389 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:17:06" (1/1) ... [2021-11-12 22:17:06,393 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:17:06" (1/1) ... [2021-11-12 22:17:06,395 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:17:06" (1/1) ... [2021-11-12 22:17:06,409 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 22:17:06,418 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 22:17:06,418 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 22:17:06,418 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 22:17:06,419 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:17:06" (1/1) ... [2021-11-12 22:17:06,427 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:17:06,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd0c9ff-4bd6-49a4-b1f5-8a87ee5b23f2/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:17:06,447 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd0c9ff-4bd6-49a4-b1f5-8a87ee5b23f2/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 22:17:06,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd0c9ff-4bd6-49a4-b1f5-8a87ee5b23f2/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 22:17:06,486 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-12 22:17:06,486 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 22:17:06,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 22:17:06,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-12 22:17:06,929 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 22:17:06,929 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-12 22:17:06,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:17:06 BoogieIcfgContainer [2021-11-12 22:17:06,931 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 22:17:06,933 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 22:17:06,933 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 22:17:06,935 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 22:17:06,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 10:17:05" (1/3) ... [2021-11-12 22:17:06,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a94195 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:17:06, skipping insertion in model container [2021-11-12 22:17:06,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:17:06" (2/3) ... [2021-11-12 22:17:06,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a94195 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:17:06, skipping insertion in model container [2021-11-12 22:17:06,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:17:06" (3/3) ... [2021-11-12 22:17:06,938 INFO L111 eAbstractionObserver]: Analyzing ICFG diff_usafe.c [2021-11-12 22:17:06,960 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 22:17:06,960 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2021-11-12 22:17:07,016 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 22:17:07,023 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-12 22:17:07,023 INFO L340 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2021-11-12 22:17:07,037 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 15 states have (on average 2.0) internal successors, (30), 24 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:17:07,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-12 22:17:07,044 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:17:07,044 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-12 22:17:07,045 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 5 more)] === [2021-11-12 22:17:07,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:17:07,051 INFO L85 PathProgramCache]: Analyzing trace with hash 28739442, now seen corresponding path program 1 times [2021-11-12 22:17:07,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:17:07,066 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [193181772] [2021-11-12 22:17:07,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:17:07,067 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:17:07,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd0c9ff-4bd6-49a4-b1f5-8a87ee5b23f2/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:17:07,071 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd0c9ff-4bd6-49a4-b1f5-8a87ee5b23f2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:17:07,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd0c9ff-4bd6-49a4-b1f5-8a87ee5b23f2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 22:17:07,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:17:07,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-12 22:17:07,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:17:07,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:17:07,220 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:17:07,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:17:07,254 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:17:07,255 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [193181772] [2021-11-12 22:17:07,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [193181772] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:17:07,257 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:17:07,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-12 22:17:07,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000423922] [2021-11-12 22:17:07,260 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:17:07,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-12 22:17:07,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:17:07,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-12 22:17:07,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 22:17:07,304 INFO L87 Difference]: Start difference. First operand has 25 states, 15 states have (on average 2.0) internal successors, (30), 24 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:17:07,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:17:07,319 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2021-11-12 22:17:07,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-12 22:17:07,322 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-12 22:17:07,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:17:07,331 INFO L225 Difference]: With dead ends: 25 [2021-11-12 22:17:07,331 INFO L226 Difference]: Without dead ends: 23 [2021-11-12 22:17:07,333 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 22:17:07,337 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.35ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-12 22:17:07,338 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 1.35ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-12 22:17:07,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-11-12 22:17:07,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-11-12 22:17:07,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 22 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:17:07,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2021-11-12 22:17:07,378 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 5 [2021-11-12 22:17:07,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:17:07,379 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2021-11-12 22:17:07,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:17:07,380 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2021-11-12 22:17:07,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-12 22:17:07,380 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:17:07,381 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-12 22:17:07,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd0c9ff-4bd6-49a4-b1f5-8a87ee5b23f2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 22:17:07,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd0c9ff-4bd6-49a4-b1f5-8a87ee5b23f2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:17:07,593 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 5 more)] === [2021-11-12 22:17:07,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:17:07,594 INFO L85 PathProgramCache]: Analyzing trace with hash 28699080, now seen corresponding path program 1 times [2021-11-12 22:17:07,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:17:07,594 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1350218216] [2021-11-12 22:17:07,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:17:07,595 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:17:07,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd0c9ff-4bd6-49a4-b1f5-8a87ee5b23f2/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:17:07,596 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd0c9ff-4bd6-49a4-b1f5-8a87ee5b23f2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:17:07,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd0c9ff-4bd6-49a4-b1f5-8a87ee5b23f2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 22:17:07,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:17:07,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:17:07,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:17:07,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:17:07,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:17:07,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:17:07,689 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:17:07,689 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1350218216] [2021-11-12 22:17:07,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1350218216] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:17:07,690 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:17:07,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-12 22:17:07,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727299161] [2021-11-12 22:17:07,691 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:17:07,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:17:07,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:17:07,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:17:07,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:17:07,694 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:17:07,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:17:07,741 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2021-11-12 22:17:07,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:17:07,742 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-12 22:17:07,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:17:07,743 INFO L225 Difference]: With dead ends: 22 [2021-11-12 22:17:07,743 INFO L226 Difference]: Without dead ends: 20 [2021-11-12 22:17:07,743 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:17:07,745 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 21 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.05ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.09ms IncrementalHoareTripleChecker+Time [2021-11-12 22:17:07,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 17 Invalid, 9 Unknown, 0 Unchecked, 1.05ms Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 41.09ms Time] [2021-11-12 22:17:07,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-11-12 22:17:07,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-11-12 22:17:07,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 19 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:17:07,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2021-11-12 22:17:07,751 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 5 [2021-11-12 22:17:07,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:17:07,752 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2021-11-12 22:17:07,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:17:07,752 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2021-11-12 22:17:07,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-12 22:17:07,753 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:17:07,753 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-12 22:17:07,764 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd0c9ff-4bd6-49a4-b1f5-8a87ee5b23f2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-12 22:17:07,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd0c9ff-4bd6-49a4-b1f5-8a87ee5b23f2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:17:07,966 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 5 more)] === [2021-11-12 22:17:07,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:17:07,968 INFO L85 PathProgramCache]: Analyzing trace with hash 28699946, now seen corresponding path program 1 times [2021-11-12 22:17:07,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:17:07,972 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2457016] [2021-11-12 22:17:07,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:17:07,972 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:17:07,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd0c9ff-4bd6-49a4-b1f5-8a87ee5b23f2/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:17:07,976 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd0c9ff-4bd6-49a4-b1f5-8a87ee5b23f2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:17:08,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd0c9ff-4bd6-49a4-b1f5-8a87ee5b23f2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 22:17:08,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 22:17:08,041 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-12 22:17:08,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 22:17:08,122 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-11-12 22:17:08,122 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-12 22:17:08,123 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0REQUIRES_VIOLATION (8 of 9 remaining) [2021-11-12 22:17:08,125 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION (7 of 9 remaining) [2021-11-12 22:17:08,126 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION (6 of 9 remaining) [2021-11-12 22:17:08,126 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION (5 of 9 remaining) [2021-11-12 22:17:08,126 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION (4 of 9 remaining) [2021-11-12 22:17:08,126 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION (3 of 9 remaining) [2021-11-12 22:17:08,127 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION (2 of 9 remaining) [2021-11-12 22:17:08,127 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION (1 of 9 remaining) [2021-11-12 22:17:08,140 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (0 of 9 remaining) [2021-11-12 22:17:08,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd0c9ff-4bd6-49a4-b1f5-8a87ee5b23f2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 22:17:08,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd0c9ff-4bd6-49a4-b1f5-8a87ee5b23f2/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:17:08,354 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-11-12 22:17:08,358 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-12 22:17:08,367 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.translateProgramExecution(InlinerBacktranslator.java:203) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:216) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:206) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getProgramExecutionAsString(CounterExampleResult.java:155) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getLongDescription(CounterExampleResult.java:134) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportLocationResults(TraceAbstractionStarter.java:586) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:181) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-12 22:17:08,381 INFO L158 Benchmark]: Toolchain (without parser) took 2442.07ms. Allocated memory was 65.0MB in the beginning and 94.4MB in the end (delta: 29.4MB). Free memory was 46.3MB in the beginning and 57.5MB in the end (delta: -11.2MB). Peak memory consumption was 15.5MB. Max. memory is 16.1GB. [2021-11-12 22:17:08,382 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 65.0MB. Free memory is still 46.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:17:08,382 INFO L158 Benchmark]: CACSL2BoogieTranslator took 331.03ms. Allocated memory is still 65.0MB. Free memory was 46.1MB in the beginning and 36.5MB in the end (delta: 9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-12 22:17:08,383 INFO L158 Benchmark]: Boogie Procedure Inliner took 82.35ms. Allocated memory is still 65.0MB. Free memory was 36.5MB in the beginning and 48.7MB in the end (delta: -12.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 22:17:08,384 INFO L158 Benchmark]: Boogie Preprocessor took 59.03ms. Allocated memory is still 65.0MB. Free memory was 48.7MB in the beginning and 47.5MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:17:08,384 INFO L158 Benchmark]: RCFGBuilder took 513.38ms. Allocated memory is still 65.0MB. Free memory was 47.3MB in the beginning and 36.2MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-12 22:17:08,385 INFO L158 Benchmark]: TraceAbstraction took 1447.76ms. Allocated memory was 65.0MB in the beginning and 94.4MB in the end (delta: 29.4MB). Free memory was 35.6MB in the beginning and 57.5MB in the end (delta: -21.9MB). Peak memory consumption was 8.5MB. Max. memory is 16.1GB. [2021-11-12 22:17:08,388 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 65.0MB. Free memory is still 46.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 331.03ms. Allocated memory is still 65.0MB. Free memory was 46.1MB in the beginning and 36.5MB in the end (delta: 9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 82.35ms. Allocated memory is still 65.0MB. Free memory was 36.5MB in the beginning and 48.7MB in the end (delta: -12.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 59.03ms. Allocated memory is still 65.0MB. Free memory was 48.7MB in the beginning and 47.5MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 513.38ms. Allocated memory is still 65.0MB. Free memory was 47.3MB in the beginning and 36.2MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 1447.76ms. Allocated memory was 65.0MB in the beginning and 94.4MB in the end (delta: 29.4MB). Free memory was 35.6MB in the beginning and 57.5MB in the end (delta: -21.9MB). Peak memory consumption was 8.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-12 22:17:08,438 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd0c9ff-4bd6-49a4-b1f5-8a87ee5b23f2/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: NullPointerException: null