./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-ext-properties/test-0158_1-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bafaf10-6e47-4d5b-a914-b0551eae40d7/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bafaf10-6e47-4d5b-a914-b0551eae40d7/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bafaf10-6e47-4d5b-a914-b0551eae40d7/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bafaf10-6e47-4d5b-a914-b0551eae40d7/bin/utaipan-eEHZpOm5b7/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext-properties/test-0158_1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bafaf10-6e47-4d5b-a914-b0551eae40d7/bin/utaipan-eEHZpOm5b7/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bafaf10-6e47-4d5b-a914-b0551eae40d7/bin/utaipan-eEHZpOm5b7 --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 7140a276a0ca1ba8339f047ca5220394bc3f48542635b8ad8e347c34fb7ba260 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:16:17,447 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:16:17,451 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:16:17,521 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:16:17,522 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:16:17,531 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:16:17,533 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:16:17,538 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:16:17,542 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:16:17,549 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:16:17,551 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:16:17,553 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:16:17,554 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:16:17,557 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:16:17,560 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:16:17,570 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:16:17,573 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:16:17,574 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:16:17,578 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:16:17,588 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:16:17,591 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:16:17,593 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:16:17,597 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:16:17,599 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:16:17,610 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:16:17,610 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:16:17,611 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:16:17,613 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:16:17,614 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:16:17,616 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:16:17,617 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:16:17,618 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:16:17,620 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:16:17,622 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:16:17,624 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:16:17,624 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:16:17,625 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:16:17,626 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:16:17,626 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:16:17,627 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:16:17,628 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:16:17,629 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bafaf10-6e47-4d5b-a914-b0551eae40d7/bin/utaipan-eEHZpOm5b7/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-25 19:16:17,675 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:16:17,676 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:16:17,676 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:16:17,677 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:16:17,678 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:16:17,679 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:16:17,679 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:16:17,679 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:16:17,687 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:16:17,688 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 19:16:17,689 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:16:17,689 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:16:17,689 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 19:16:17,690 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 19:16:17,690 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:16:17,690 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 19:16:17,691 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 19:16:17,691 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 19:16:17,692 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-25 19:16:17,692 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-25 19:16:17,693 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:16:17,693 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 19:16:17,693 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-25 19:16:17,695 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 19:16:17,695 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 19:16:17,696 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:16:17,696 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-25 19:16:17,696 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-25 19:16:17,696 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-25 19:16:17,697 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:16:17,697 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-25 19:16:17,698 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 19:16:17,698 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:16:17,698 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:16:17,698 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:16:17,699 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:16:17,699 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:16:17,699 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:16:17,700 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 19:16:17,700 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 19:16:17,700 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:16:17,701 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:16:17,701 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_8bafaf10-6e47-4d5b-a914-b0551eae40d7/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bafaf10-6e47-4d5b-a914-b0551eae40d7/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7140a276a0ca1ba8339f047ca5220394bc3f48542635b8ad8e347c34fb7ba260 [2021-11-25 19:16:17,970 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:16:17,995 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:16:17,998 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:16:17,999 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:16:18,000 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:16:18,002 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bafaf10-6e47-4d5b-a914-b0551eae40d7/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/list-ext-properties/test-0158_1-2.i [2021-11-25 19:16:18,076 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bafaf10-6e47-4d5b-a914-b0551eae40d7/bin/utaipan-eEHZpOm5b7/data/8cc4457cd/c8032e758bb04420b4fc9faf3bf81da6/FLAGfabc6a286 [2021-11-25 19:16:18,718 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:16:18,719 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bafaf10-6e47-4d5b-a914-b0551eae40d7/sv-benchmarks/c/list-ext-properties/test-0158_1-2.i [2021-11-25 19:16:18,737 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bafaf10-6e47-4d5b-a914-b0551eae40d7/bin/utaipan-eEHZpOm5b7/data/8cc4457cd/c8032e758bb04420b4fc9faf3bf81da6/FLAGfabc6a286 [2021-11-25 19:16:18,984 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bafaf10-6e47-4d5b-a914-b0551eae40d7/bin/utaipan-eEHZpOm5b7/data/8cc4457cd/c8032e758bb04420b4fc9faf3bf81da6 [2021-11-25 19:16:18,988 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:16:18,990 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:16:18,994 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:16:18,995 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:16:19,000 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:16:19,001 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:16:18" (1/1) ... [2021-11-25 19:16:19,002 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5860682b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:16:19, skipping insertion in model container [2021-11-25 19:16:19,003 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:16:18" (1/1) ... [2021-11-25 19:16:19,015 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:16:19,095 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:16:19,457 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:16:19,467 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:16:19,515 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:16:19,551 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:16:19,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:16:19 WrapperNode [2021-11-25 19:16:19,552 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:16:19,554 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:16:19,554 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:16:19,554 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:16:19,563 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:16:19" (1/1) ... [2021-11-25 19:16:19,579 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:16:19" (1/1) ... [2021-11-25 19:16:19,602 INFO L137 Inliner]: procedures = 124, calls = 15, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 30 [2021-11-25 19:16:19,602 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:16:19,603 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:16:19,604 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:16:19,604 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:16:19,613 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:16:19" (1/1) ... [2021-11-25 19:16:19,614 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:16:19" (1/1) ... [2021-11-25 19:16:19,618 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:16:19" (1/1) ... [2021-11-25 19:16:19,618 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:16:19" (1/1) ... [2021-11-25 19:16:19,625 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:16:19" (1/1) ... [2021-11-25 19:16:19,627 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:16:19" (1/1) ... [2021-11-25 19:16:19,629 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:16:19" (1/1) ... [2021-11-25 19:16:19,632 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:16:19,633 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:16:19,633 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:16:19,634 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:16:19,635 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:16:19" (1/1) ... [2021-11-25 19:16:19,645 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:16:19,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bafaf10-6e47-4d5b-a914-b0551eae40d7/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:16:19,681 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bafaf10-6e47-4d5b-a914-b0551eae40d7/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:16:19,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bafaf10-6e47-4d5b-a914-b0551eae40d7/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:16:19,730 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 19:16:19,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 19:16:19,730 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 19:16:19,730 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:16:19,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 19:16:19,731 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 19:16:19,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 19:16:19,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 19:16:19,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:16:19,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:16:19,823 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:16:19,825 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:16:20,039 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:16:20,072 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:16:20,073 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-25 19:16:20,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:16:20 BoogieIcfgContainer [2021-11-25 19:16:20,083 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:16:20,085 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:16:20,086 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:16:20,098 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:16:20,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:16:18" (1/3) ... [2021-11-25 19:16:20,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@604f4db6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:16:20, skipping insertion in model container [2021-11-25 19:16:20,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:16:19" (2/3) ... [2021-11-25 19:16:20,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@604f4db6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:16:20, skipping insertion in model container [2021-11-25 19:16:20,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:16:20" (3/3) ... [2021-11-25 19:16:20,102 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0158_1-2.i [2021-11-25 19:16:20,108 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:16:20,123 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-11-25 19:16:20,169 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:16:20,177 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 [2021-11-25 19:16:20,178 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-11-25 19:16:20,195 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 10 states have (on average 2.3) internal successors, (23), 21 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) [2021-11-25 19:16:20,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-11-25 19:16:20,202 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:16:20,203 INFO L514 BasicCegarLoop]: trace histogram [1, 1] [2021-11-25 19:16:20,203 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-11-25 19:16:20,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:16:20,210 INFO L85 PathProgramCache]: Analyzing trace with hash 2112, now seen corresponding path program 1 times [2021-11-25 19:16:20,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:16:20,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982221098] [2021-11-25 19:16:20,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:16:20,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:16:20,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:16:20,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:16:20,422 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:16:20,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982221098] [2021-11-25 19:16:20,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982221098] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:16:20,424 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:16:20,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-25 19:16:20,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106120546] [2021-11-25 19:16:20,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:16:20,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:16:20,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:16:20,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:16:20,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:16:20,468 INFO L87 Difference]: Start difference. First operand has 22 states, 10 states have (on average 2.3) internal successors, (23), 21 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) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2021-11-25 19:16:20,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:16:20,522 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2021-11-25 19:16:20,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:16:20,525 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2021-11-25 19:16:20,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:16:20,533 INFO L225 Difference]: With dead ends: 17 [2021-11-25 19:16:20,534 INFO L226 Difference]: Without dead ends: 16 [2021-11-25 19:16:20,536 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 [2021-11-25 19:16:20,540 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 14 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:16:20,541 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 5 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:16:20,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-11-25 19:16:20,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-11-25 19:16:20,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 10 states have (on average 1.7) internal successors, (17), 15 states have internal predecessors, (17), 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) [2021-11-25 19:16:20,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2021-11-25 19:16:20,574 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 2 [2021-11-25 19:16:20,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:16:20,575 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2021-11-25 19:16:20,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2021-11-25 19:16:20,575 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2021-11-25 19:16:20,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-11-25 19:16:20,576 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:16:20,576 INFO L514 BasicCegarLoop]: trace histogram [1, 1] [2021-11-25 19:16:20,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 19:16:20,577 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-11-25 19:16:20,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:16:20,578 INFO L85 PathProgramCache]: Analyzing trace with hash 2113, now seen corresponding path program 1 times [2021-11-25 19:16:20,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:16:20,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886948080] [2021-11-25 19:16:20,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:16:20,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:16:20,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:16:20,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:16:20,702 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:16:20,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886948080] [2021-11-25 19:16:20,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886948080] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:16:20,703 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:16:20,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-25 19:16:20,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827003195] [2021-11-25 19:16:20,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:16:20,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:16:20,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:16:20,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:16:20,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:16:20,709 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2021-11-25 19:16:20,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:16:20,750 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2021-11-25 19:16:20,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:16:20,752 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2021-11-25 19:16:20,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:16:20,752 INFO L225 Difference]: With dead ends: 11 [2021-11-25 19:16:20,753 INFO L226 Difference]: Without dead ends: 11 [2021-11-25 19:16:20,753 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 [2021-11-25 19:16:20,760 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 9 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:16:20,761 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 6 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:16:20,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-11-25 19:16:20,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-11-25 19:16:20,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 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) [2021-11-25 19:16:20,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2021-11-25 19:16:20,772 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 2 [2021-11-25 19:16:20,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:16:20,773 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2021-11-25 19:16:20,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2021-11-25 19:16:20,774 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2021-11-25 19:16:20,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-25 19:16:20,779 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:16:20,779 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:16:20,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 19:16:20,780 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-11-25 19:16:20,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:16:20,781 INFO L85 PathProgramCache]: Analyzing trace with hash 404872397, now seen corresponding path program 1 times [2021-11-25 19:16:20,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:16:20,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291445876] [2021-11-25 19:16:20,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:16:20,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:16:20,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:16:20,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:16:20,872 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:16:20,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291445876] [2021-11-25 19:16:20,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291445876] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:16:20,873 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:16:20,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 19:16:20,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375645772] [2021-11-25 19:16:20,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:16:20,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:16:20,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:16:20,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:16:20,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:16:20,876 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-11-25 19:16:20,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:16:20,935 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2021-11-25 19:16:20,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 19:16:20,936 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 8 [2021-11-25 19:16:20,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:16:20,937 INFO L225 Difference]: With dead ends: 15 [2021-11-25 19:16:20,937 INFO L226 Difference]: Without dead ends: 15 [2021-11-25 19:16:20,937 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:16:20,939 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 1 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:16:20,940 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 18 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:16:20,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-11-25 19:16:20,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 13. [2021-11-25 19:16:20,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 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) [2021-11-25 19:16:20,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2021-11-25 19:16:20,954 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 8 [2021-11-25 19:16:20,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:16:20,954 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2021-11-25 19:16:20,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-11-25 19:16:20,955 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2021-11-25 19:16:20,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-25 19:16:20,955 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:16:20,956 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:16:20,956 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 19:16:20,956 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-11-25 19:16:20,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:16:20,957 INFO L85 PathProgramCache]: Analyzing trace with hash 552635757, now seen corresponding path program 1 times [2021-11-25 19:16:20,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:16:20,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187938159] [2021-11-25 19:16:20,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:16:20,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:16:21,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 19:16:21,011 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-25 19:16:21,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 19:16:21,071 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-25 19:16:21,071 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-25 19:16:21,073 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK (10 of 11 remaining) [2021-11-25 19:16:21,075 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION (9 of 11 remaining) [2021-11-25 19:16:21,075 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION (8 of 11 remaining) [2021-11-25 19:16:21,076 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION (7 of 11 remaining) [2021-11-25 19:16:21,076 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION (6 of 11 remaining) [2021-11-25 19:16:21,076 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION (5 of 11 remaining) [2021-11-25 19:16:21,076 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION (4 of 11 remaining) [2021-11-25 19:16:21,077 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION (3 of 11 remaining) [2021-11-25 19:16:21,077 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION (2 of 11 remaining) [2021-11-25 19:16:21,077 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION (1 of 11 remaining) [2021-11-25 19:16:21,078 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATION (0 of 11 remaining) [2021-11-25 19:16:21,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 19:16:21,081 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2021-11-25 19:16:21,084 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-25 19:16:21,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 07:16:21 BoogieIcfgContainer [2021-11-25 19:16:21,106 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-25 19:16:21,106 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-25 19:16:21,106 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-25 19:16:21,107 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-25 19:16:21,107 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:16:20" (3/4) ... [2021-11-25 19:16:21,111 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-25 19:16:21,111 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-25 19:16:21,112 INFO L158 Benchmark]: Toolchain (without parser) took 2122.02ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 60.8MB in the beginning and 69.9MB in the end (delta: -9.1MB). Peak memory consumption was 6.7MB. Max. memory is 16.1GB. [2021-11-25 19:16:21,112 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 86.0MB. Free memory was 59.2MB in the beginning and 59.2MB in the end (delta: 37.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 19:16:21,113 INFO L158 Benchmark]: CACSL2BoogieTranslator took 558.11ms. Allocated memory is still 86.0MB. Free memory was 60.6MB in the beginning and 53.6MB in the end (delta: 7.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-25 19:16:21,113 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.05ms. Allocated memory is still 86.0MB. Free memory was 53.6MB in the beginning and 51.8MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 19:16:21,114 INFO L158 Benchmark]: Boogie Preprocessor took 29.01ms. Allocated memory is still 86.0MB. Free memory was 51.8MB in the beginning and 50.6MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 19:16:21,114 INFO L158 Benchmark]: RCFGBuilder took 450.05ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 50.6MB in the beginning and 80.0MB in the end (delta: -29.4MB). Peak memory consumption was 13.5MB. Max. memory is 16.1GB. [2021-11-25 19:16:21,115 INFO L158 Benchmark]: TraceAbstraction took 1020.38ms. Allocated memory is still 104.9MB. Free memory was 79.6MB in the beginning and 69.9MB in the end (delta: 9.7MB). Peak memory consumption was 7.0MB. Max. memory is 16.1GB. [2021-11-25 19:16:21,115 INFO L158 Benchmark]: Witness Printer took 4.71ms. Allocated memory is still 104.9MB. Free memory is still 69.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 19:16:21,117 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 86.0MB. Free memory was 59.2MB in the beginning and 59.2MB in the end (delta: 37.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 558.11ms. Allocated memory is still 86.0MB. Free memory was 60.6MB in the beginning and 53.6MB in the end (delta: 7.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.05ms. Allocated memory is still 86.0MB. Free memory was 53.6MB in the beginning and 51.8MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.01ms. Allocated memory is still 86.0MB. Free memory was 51.8MB in the beginning and 50.6MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 450.05ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 50.6MB in the beginning and 80.0MB in the end (delta: -29.4MB). Peak memory consumption was 13.5MB. Max. memory is 16.1GB. * TraceAbstraction took 1020.38ms. Allocated memory is still 104.9MB. Free memory was 79.6MB in the beginning and 69.9MB in the end (delta: 9.7MB). Peak memory consumption was 7.0MB. Max. memory is 16.1GB. * Witness Printer took 4.71ms. Allocated memory is still 104.9MB. Free memory is still 69.9MB. 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 - UnprovableResult [Line: 524]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 524. Possible FailurePath: [L526-L533] union { void *p0; struct { char c[2]; int p1; int p2; } str; } data; [L534] data.p0 = malloc(37U) [L535] COND FALSE !(__VERIFIER_nondet_int()) [L538] data.str.p2 = 30 VAL [data={3:0}] [L540] EXPR data.str.p2 VAL [data={3:0}, data.str.p2=30] [L540] COND FALSE !(25 > data.str.p2) [L543] return 0; [L543] return 0; VAL [\result=0] - UnprovableResult [Line: 534]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 534]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 536]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 536]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 22 locations, 11 error locations. Started 1 CEGAR loops. OverallTime: 0.9s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 24 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 24 mSDsluCounter, 29 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 13 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 44 IncrementalHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 17 mSDtfsCounter, 44 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, InterpolantAutomatonStates: 10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 43 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-25 19:16:21,167 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bafaf10-6e47-4d5b-a914-b0551eae40d7/bin/utaipan-eEHZpOm5b7/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_8bafaf10-6e47-4d5b-a914-b0551eae40d7/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bafaf10-6e47-4d5b-a914-b0551eae40d7/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bafaf10-6e47-4d5b-a914-b0551eae40d7/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bafaf10-6e47-4d5b-a914-b0551eae40d7/bin/utaipan-eEHZpOm5b7/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext-properties/test-0158_1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bafaf10-6e47-4d5b-a914-b0551eae40d7/bin/utaipan-eEHZpOm5b7/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bafaf10-6e47-4d5b-a914-b0551eae40d7/bin/utaipan-eEHZpOm5b7 --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 7140a276a0ca1ba8339f047ca5220394bc3f48542635b8ad8e347c34fb7ba260 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:16:24,030 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:16:24,033 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:16:24,072 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:16:24,073 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:16:24,075 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:16:24,077 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:16:24,080 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:16:24,083 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:16:24,084 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:16:24,086 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:16:24,088 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:16:24,089 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:16:24,090 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:16:24,092 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:16:24,095 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:16:24,096 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:16:24,098 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:16:24,119 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:16:24,123 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:16:24,126 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:16:24,128 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:16:24,135 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:16:24,138 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:16:24,144 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:16:24,149 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:16:24,149 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:16:24,151 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:16:24,160 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:16:24,161 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:16:24,162 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:16:24,163 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:16:24,165 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:16:24,167 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:16:24,169 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:16:24,171 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:16:24,172 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:16:24,173 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:16:24,173 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:16:24,176 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:16:24,177 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:16:24,178 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bafaf10-6e47-4d5b-a914-b0551eae40d7/bin/utaipan-eEHZpOm5b7/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-25 19:16:24,238 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:16:24,239 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:16:24,240 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:16:24,240 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:16:24,242 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:16:24,242 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:16:24,242 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:16:24,243 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:16:24,243 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:16:24,243 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:16:24,245 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:16:24,245 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:16:24,247 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-25 19:16:24,247 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-25 19:16:24,248 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:16:24,248 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 19:16:24,248 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-25 19:16:24,249 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 19:16:24,249 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 19:16:24,249 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:16:24,250 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-25 19:16:24,250 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-25 19:16:24,250 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-25 19:16:24,250 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:16:24,251 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-25 19:16:24,251 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-25 19:16:24,251 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-25 19:16:24,252 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 19:16:24,252 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:16:24,252 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:16:24,253 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-25 19:16:24,253 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:16:24,253 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:16:24,254 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:16:24,254 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:16:24,255 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-25 19:16:24,255 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-25 19:16:24,255 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:16:24,256 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:16:24,256 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_8bafaf10-6e47-4d5b-a914-b0551eae40d7/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bafaf10-6e47-4d5b-a914-b0551eae40d7/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7140a276a0ca1ba8339f047ca5220394bc3f48542635b8ad8e347c34fb7ba260 [2021-11-25 19:16:24,712 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:16:24,745 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:16:24,749 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:16:24,751 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:16:24,752 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:16:24,754 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bafaf10-6e47-4d5b-a914-b0551eae40d7/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/list-ext-properties/test-0158_1-2.i [2021-11-25 19:16:24,830 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bafaf10-6e47-4d5b-a914-b0551eae40d7/bin/utaipan-eEHZpOm5b7/data/bf31509a6/2195ba6f82b44a1b873bac42431f4910/FLAGfefc062c5 [2021-11-25 19:16:25,382 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:16:25,388 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bafaf10-6e47-4d5b-a914-b0551eae40d7/sv-benchmarks/c/list-ext-properties/test-0158_1-2.i [2021-11-25 19:16:25,408 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bafaf10-6e47-4d5b-a914-b0551eae40d7/bin/utaipan-eEHZpOm5b7/data/bf31509a6/2195ba6f82b44a1b873bac42431f4910/FLAGfefc062c5 [2021-11-25 19:16:25,683 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bafaf10-6e47-4d5b-a914-b0551eae40d7/bin/utaipan-eEHZpOm5b7/data/bf31509a6/2195ba6f82b44a1b873bac42431f4910 [2021-11-25 19:16:25,687 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:16:25,688 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:16:25,691 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:16:25,692 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:16:25,696 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:16:25,697 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:16:25" (1/1) ... [2021-11-25 19:16:25,698 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11a95e90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:16:25, skipping insertion in model container [2021-11-25 19:16:25,698 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:16:25" (1/1) ... [2021-11-25 19:16:25,707 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:16:25,746 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:16:26,194 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:16:26,206 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:16:26,245 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:16:26,286 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:16:26,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:16:26 WrapperNode [2021-11-25 19:16:26,287 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:16:26,289 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:16:26,289 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:16:26,289 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:16:26,298 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:16:26" (1/1) ... [2021-11-25 19:16:26,321 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:16:26" (1/1) ... [2021-11-25 19:16:26,344 INFO L137 Inliner]: procedures = 127, calls = 15, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 30 [2021-11-25 19:16:26,345 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:16:26,346 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:16:26,346 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:16:26,346 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:16:26,356 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:16:26" (1/1) ... [2021-11-25 19:16:26,356 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:16:26" (1/1) ... [2021-11-25 19:16:26,361 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:16:26" (1/1) ... [2021-11-25 19:16:26,362 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:16:26" (1/1) ... [2021-11-25 19:16:26,380 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:16:26" (1/1) ... [2021-11-25 19:16:26,383 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:16:26" (1/1) ... [2021-11-25 19:16:26,397 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:16:26" (1/1) ... [2021-11-25 19:16:26,400 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:16:26,402 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:16:26,402 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:16:26,402 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:16:26,403 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:16:26" (1/1) ... [2021-11-25 19:16:26,427 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:16:26,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bafaf10-6e47-4d5b-a914-b0551eae40d7/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:16:26,457 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bafaf10-6e47-4d5b-a914-b0551eae40d7/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:16:26,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bafaf10-6e47-4d5b-a914-b0551eae40d7/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:16:26,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-25 19:16:26,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 19:16:26,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:16:26,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 19:16:26,526 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 19:16:26,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-25 19:16:26,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 19:16:26,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-25 19:16:26,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-25 19:16:26,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:16:26,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:16:26,682 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:16:26,685 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:16:27,026 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:16:27,035 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:16:27,036 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-25 19:16:27,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:16:27 BoogieIcfgContainer [2021-11-25 19:16:27,038 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:16:27,052 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:16:27,053 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:16:27,056 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:16:27,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:16:25" (1/3) ... [2021-11-25 19:16:27,057 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fe751b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:16:27, skipping insertion in model container [2021-11-25 19:16:27,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:16:26" (2/3) ... [2021-11-25 19:16:27,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fe751b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:16:27, skipping insertion in model container [2021-11-25 19:16:27,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:16:27" (3/3) ... [2021-11-25 19:16:27,059 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0158_1-2.i [2021-11-25 19:16:27,065 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:16:27,066 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-11-25 19:16:27,111 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:16:27,118 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 [2021-11-25 19:16:27,119 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-11-25 19:16:27,135 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 13 states have (on average 2.0) internal successors, (26), 24 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) [2021-11-25 19:16:27,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-25 19:16:27,143 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:16:27,143 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-25 19:16:27,144 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-11-25 19:16:27,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:16:27,150 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2021-11-25 19:16:27,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:16:27,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1944844367] [2021-11-25 19:16:27,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:16:27,167 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:16:27,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bafaf10-6e47-4d5b-a914-b0551eae40d7/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:16:27,174 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bafaf10-6e47-4d5b-a914-b0551eae40d7/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:16:27,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bafaf10-6e47-4d5b-a914-b0551eae40d7/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-25 19:16:27,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:16:27,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 19:16:27,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:16:27,364 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:16:27,388 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-25 19:16:27,389 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 14 [2021-11-25 19:16:27,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:16:27,420 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:16:27,420 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:16:27,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1944844367] [2021-11-25 19:16:27,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1944844367] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:16:27,422 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:16:27,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 19:16:27,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715547960] [2021-11-25 19:16:27,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:16:27,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:16:27,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:16:27,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:16:27,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:16:27,467 INFO L87 Difference]: Start difference. First operand has 25 states, 13 states have (on average 2.0) internal successors, (26), 24 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) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 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) [2021-11-25 19:16:27,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:16:27,571 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2021-11-25 19:16:27,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:16:27,574 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 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 [2021-11-25 19:16:27,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:16:27,583 INFO L225 Difference]: With dead ends: 20 [2021-11-25 19:16:27,583 INFO L226 Difference]: Without dead ends: 18 [2021-11-25 19:16:27,600 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:16:27,605 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 15 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:16:27,606 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 11 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:16:27,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-11-25 19:16:27,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-11-25 19:16:27,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 17 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) [2021-11-25 19:16:27,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2021-11-25 19:16:27,654 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 3 [2021-11-25 19:16:27,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:16:27,655 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2021-11-25 19:16:27,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 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) [2021-11-25 19:16:27,655 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2021-11-25 19:16:27,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-25 19:16:27,656 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:16:27,656 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-25 19:16:27,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bafaf10-6e47-4d5b-a914-b0551eae40d7/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-25 19:16:27,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bafaf10-6e47-4d5b-a914-b0551eae40d7/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:16:27,890 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-11-25 19:16:27,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:16:27,894 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2021-11-25 19:16:27,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:16:27,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1399277965] [2021-11-25 19:16:27,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:16:27,896 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:16:27,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bafaf10-6e47-4d5b-a914-b0551eae40d7/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:16:27,898 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bafaf10-6e47-4d5b-a914-b0551eae40d7/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:16:27,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bafaf10-6e47-4d5b-a914-b0551eae40d7/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-25 19:16:27,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:16:27,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-25 19:16:27,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:16:28,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:16:28,080 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-25 19:16:28,102 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2021-11-25 19:16:28,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:16:28,175 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:16:28,176 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:16:28,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1399277965] [2021-11-25 19:16:28,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1399277965] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:16:28,180 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:16:28,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 19:16:28,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736024903] [2021-11-25 19:16:28,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:16:28,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:16:28,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:16:28,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:16:28,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:16:28,184 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 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) [2021-11-25 19:16:28,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:16:28,273 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2021-11-25 19:16:28,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:16:28,275 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 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 [2021-11-25 19:16:28,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:16:28,276 INFO L225 Difference]: With dead ends: 13 [2021-11-25 19:16:28,276 INFO L226 Difference]: Without dead ends: 13 [2021-11-25 19:16:28,276 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:16:28,278 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 10 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:16:28,279 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 9 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:16:28,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-11-25 19:16:28,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-11-25 19:16:28,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 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) [2021-11-25 19:16:28,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2021-11-25 19:16:28,286 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 3 [2021-11-25 19:16:28,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:16:28,287 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2021-11-25 19:16:28,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 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) [2021-11-25 19:16:28,287 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2021-11-25 19:16:28,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-25 19:16:28,288 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:16:28,288 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:16:28,309 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bafaf10-6e47-4d5b-a914-b0551eae40d7/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-25 19:16:28,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bafaf10-6e47-4d5b-a914-b0551eae40d7/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:16:28,504 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-11-25 19:16:28,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:16:28,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1114117971, now seen corresponding path program 1 times [2021-11-25 19:16:28,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:16:28,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1755133634] [2021-11-25 19:16:28,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:16:28,507 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:16:28,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bafaf10-6e47-4d5b-a914-b0551eae40d7/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:16:28,513 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bafaf10-6e47-4d5b-a914-b0551eae40d7/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:16:28,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bafaf10-6e47-4d5b-a914-b0551eae40d7/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-25 19:16:28,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:16:28,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-25 19:16:28,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:16:28,675 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 19:16:28,699 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-25 19:16:28,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:16:28,718 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:16:28,718 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 19:16:28,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1755133634] [2021-11-25 19:16:28,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1755133634] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:16:28,719 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:16:28,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 19:16:28,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590722661] [2021-11-25 19:16:28,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:16:28,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:16:28,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 19:16:28,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:16:28,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:16:28,721 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2021-11-25 19:16:28,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:16:28,856 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2021-11-25 19:16:28,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 19:16:28,857 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 10 [2021-11-25 19:16:28,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:16:28,858 INFO L225 Difference]: With dead ends: 17 [2021-11-25 19:16:28,858 INFO L226 Difference]: Without dead ends: 17 [2021-11-25 19:16:28,858 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:16:28,860 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 1 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:16:28,861 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 26 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:16:28,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-11-25 19:16:28,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2021-11-25 19:16:28,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 14 states have internal predecessors, (16), 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) [2021-11-25 19:16:28,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2021-11-25 19:16:28,866 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 10 [2021-11-25 19:16:28,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:16:28,867 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2021-11-25 19:16:28,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2021-11-25 19:16:28,867 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2021-11-25 19:16:28,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-25 19:16:28,868 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:16:28,868 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:16:28,886 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bafaf10-6e47-4d5b-a914-b0551eae40d7/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-25 19:16:29,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bafaf10-6e47-4d5b-a914-b0551eae40d7/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:16:29,082 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-11-25 19:16:29,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:16:29,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1261881331, now seen corresponding path program 1 times [2021-11-25 19:16:29,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 19:16:29,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [149761499] [2021-11-25 19:16:29,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:16:29,086 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 19:16:29,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bafaf10-6e47-4d5b-a914-b0551eae40d7/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 19:16:29,087 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bafaf10-6e47-4d5b-a914-b0551eae40d7/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 19:16:29,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bafaf10-6e47-4d5b-a914-b0551eae40d7/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-25 19:16:29,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 19:16:29,223 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-25 19:16:29,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 19:16:29,297 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-11-25 19:16:29,298 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-25 19:16:29,299 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK (10 of 11 remaining) [2021-11-25 19:16:29,302 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION (9 of 11 remaining) [2021-11-25 19:16:29,302 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION (8 of 11 remaining) [2021-11-25 19:16:29,303 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION (7 of 11 remaining) [2021-11-25 19:16:29,303 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION (6 of 11 remaining) [2021-11-25 19:16:29,303 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION (5 of 11 remaining) [2021-11-25 19:16:29,304 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION (4 of 11 remaining) [2021-11-25 19:16:29,304 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION (3 of 11 remaining) [2021-11-25 19:16:29,304 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION (2 of 11 remaining) [2021-11-25 19:16:29,305 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION (1 of 11 remaining) [2021-11-25 19:16:29,305 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATION (0 of 11 remaining) [2021-11-25 19:16:29,324 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bafaf10-6e47-4d5b-a914-b0551eae40d7/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-25 19:16:29,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bafaf10-6e47-4d5b-a914-b0551eae40d7/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 19:16:29,510 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2021-11-25 19:16:29,516 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-25 19:16:29,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 07:16:29 BoogieIcfgContainer [2021-11-25 19:16:29,551 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-25 19:16:29,554 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-25 19:16:29,554 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-25 19:16:29,555 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-25 19:16:29,556 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:16:27" (3/4) ... [2021-11-25 19:16:29,560 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-25 19:16:29,560 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-25 19:16:29,561 INFO L158 Benchmark]: Toolchain (without parser) took 3872.38ms. Allocated memory was 54.5MB in the beginning and 77.6MB in the end (delta: 23.1MB). Free memory was 31.8MB in the beginning and 51.4MB in the end (delta: -19.6MB). Peak memory consumption was 3.3MB. Max. memory is 16.1GB. [2021-11-25 19:16:29,563 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 54.5MB. Free memory was 35.5MB in the beginning and 35.4MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 19:16:29,564 INFO L158 Benchmark]: CACSL2BoogieTranslator took 596.59ms. Allocated memory was 54.5MB in the beginning and 77.6MB in the end (delta: 23.1MB). Free memory was 31.7MB in the beginning and 54.1MB in the end (delta: -22.4MB). Peak memory consumption was 7.4MB. Max. memory is 16.1GB. [2021-11-25 19:16:29,564 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.33ms. Allocated memory is still 77.6MB. Free memory was 54.1MB in the beginning and 52.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 19:16:29,566 INFO L158 Benchmark]: Boogie Preprocessor took 55.16ms. Allocated memory is still 77.6MB. Free memory was 52.0MB in the beginning and 50.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 19:16:29,570 INFO L158 Benchmark]: RCFGBuilder took 636.68ms. Allocated memory is still 77.6MB. Free memory was 50.7MB in the beginning and 39.2MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-25 19:16:29,574 INFO L158 Benchmark]: TraceAbstraction took 2499.29ms. Allocated memory is still 77.6MB. Free memory was 58.8MB in the beginning and 51.8MB in the end (delta: 6.9MB). Peak memory consumption was 5.2MB. Max. memory is 16.1GB. [2021-11-25 19:16:29,575 INFO L158 Benchmark]: Witness Printer took 6.34ms. Allocated memory is still 77.6MB. Free memory is still 51.4MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 19:16:29,583 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 54.5MB. Free memory was 35.5MB in the beginning and 35.4MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 596.59ms. Allocated memory was 54.5MB in the beginning and 77.6MB in the end (delta: 23.1MB). Free memory was 31.7MB in the beginning and 54.1MB in the end (delta: -22.4MB). Peak memory consumption was 7.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 56.33ms. Allocated memory is still 77.6MB. Free memory was 54.1MB in the beginning and 52.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 55.16ms. Allocated memory is still 77.6MB. Free memory was 52.0MB in the beginning and 50.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 636.68ms. Allocated memory is still 77.6MB. Free memory was 50.7MB in the beginning and 39.2MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 2499.29ms. Allocated memory is still 77.6MB. Free memory was 58.8MB in the beginning and 51.8MB in the end (delta: 6.9MB). Peak memory consumption was 5.2MB. Max. memory is 16.1GB. * Witness Printer took 6.34ms. Allocated memory is still 77.6MB. Free memory is still 51.4MB. 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 - UnprovableResult [Line: 524]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 524. Possible FailurePath: [L526-L533] union { void *p0; struct { char c[2]; int p1; int p2; } str; } data; [L534] data.p0 = malloc(37U) VAL [data={13:0}, malloc(37U)={3:0}] [L535] COND FALSE !(__VERIFIER_nondet_int()) [L538] data.str.p2 = 30 VAL [data={13:0}] [L540] EXPR data.str.p2 VAL [data={13:0}, data.str.p2=30] [L540] COND FALSE !(25 > data.str.p2) [L543] return 0; [L543] return 0; VAL [\result=0] - UnprovableResult [Line: 534]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 534]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 536]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 536]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 25 locations, 11 error locations. Started 1 CEGAR loops. OverallTime: 2.4s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 26 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 26 mSDsluCounter, 46 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 17 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 41 IncrementalHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 29 mSDtfsCounter, 41 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=0, InterpolantAutomatonStates: 10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 13 ConstructedInterpolants, 0 QuantifiedInterpolants, 44 SizeOfPredicates, 5 NumberOfNonLiveVariables, 127 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-25 19:16:29,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bafaf10-6e47-4d5b-a914-b0551eae40d7/bin/utaipan-eEHZpOm5b7/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: UNKNOWN: Overapproximated counterexample