./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-regression/test_union.c_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee36ba9e-6ce0-4cf0-8f66-50420cdab9b7/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee36ba9e-6ce0-4cf0-8f66-50420cdab9b7/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee36ba9e-6ce0-4cf0-8f66-50420cdab9b7/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee36ba9e-6ce0-4cf0-8f66-50420cdab9b7/bin/utaipan-g80aRyZoba/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-regression/test_union.c_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee36ba9e-6ce0-4cf0-8f66-50420cdab9b7/bin/utaipan-g80aRyZoba/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee36ba9e-6ce0-4cf0-8f66-50420cdab9b7/bin/utaipan-g80aRyZoba --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 1c161d4585e44025dff37c27d4a80cfc33b46019f94633af3ad2ed91db249db8 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-22 00:22:24,556 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 00:22:24,558 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 00:22:24,587 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 00:22:24,591 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 00:22:24,595 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 00:22:24,597 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 00:22:24,610 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 00:22:24,613 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 00:22:24,616 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 00:22:24,618 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 00:22:24,620 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 00:22:24,620 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 00:22:24,626 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 00:22:24,629 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 00:22:24,631 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 00:22:24,633 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 00:22:24,634 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 00:22:24,635 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 00:22:24,637 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 00:22:24,641 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 00:22:24,642 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 00:22:24,644 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 00:22:24,646 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 00:22:24,652 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 00:22:24,656 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 00:22:24,657 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 00:22:24,658 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 00:22:24,659 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 00:22:24,660 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 00:22:24,662 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 00:22:24,663 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 00:22:24,664 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 00:22:24,665 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 00:22:24,667 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 00:22:24,668 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 00:22:24,668 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 00:22:24,669 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 00:22:24,669 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 00:22:24,672 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 00:22:24,672 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 00:22:24,673 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee36ba9e-6ce0-4cf0-8f66-50420cdab9b7/bin/utaipan-g80aRyZoba/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-11-22 00:22:24,705 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 00:22:24,705 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 00:22:24,706 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 00:22:24,706 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 00:22:24,707 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 00:22:24,707 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 00:22:24,708 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 00:22:24,708 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 00:22:24,708 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 00:22:24,708 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 00:22:24,710 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 00:22:24,710 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 00:22:24,710 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 00:22:24,710 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 00:22:24,710 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 00:22:24,711 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 00:22:24,711 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 00:22:24,711 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 00:22:24,713 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-22 00:22:24,713 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-22 00:22:24,714 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 00:22:24,714 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 00:22:24,714 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-22 00:22:24,714 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 00:22:24,715 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 00:22:24,715 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 00:22:24,715 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-22 00:22:24,715 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-22 00:22:24,716 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-22 00:22:24,716 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 00:22:24,716 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-22 00:22:24,717 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 00:22:24,717 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 00:22:24,717 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 00:22:24,717 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 00:22:24,717 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 00:22:24,718 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 00:22:24,718 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 00:22:24,718 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 00:22:24,718 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 00:22:24,718 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 00:22:24,719 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 00:22:24,719 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_ee36ba9e-6ce0-4cf0-8f66-50420cdab9b7/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee36ba9e-6ce0-4cf0-8f66-50420cdab9b7/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c161d4585e44025dff37c27d4a80cfc33b46019f94633af3ad2ed91db249db8 [2022-11-22 00:22:25,035 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 00:22:25,067 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 00:22:25,070 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 00:22:25,071 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 00:22:25,072 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 00:22:25,073 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee36ba9e-6ce0-4cf0-8f66-50420cdab9b7/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/ldv-regression/test_union.c_1.i [2022-11-22 00:22:28,079 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 00:22:28,261 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 00:22:28,262 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee36ba9e-6ce0-4cf0-8f66-50420cdab9b7/sv-benchmarks/c/ldv-regression/test_union.c_1.i [2022-11-22 00:22:28,268 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee36ba9e-6ce0-4cf0-8f66-50420cdab9b7/bin/utaipan-g80aRyZoba/data/96146dd00/15e8fa98bd3b44bbb081d734b94f8b89/FLAGb81af0040 [2022-11-22 00:22:28,283 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee36ba9e-6ce0-4cf0-8f66-50420cdab9b7/bin/utaipan-g80aRyZoba/data/96146dd00/15e8fa98bd3b44bbb081d734b94f8b89 [2022-11-22 00:22:28,286 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 00:22:28,287 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 00:22:28,289 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 00:22:28,289 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 00:22:28,293 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 00:22:28,294 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:22:28" (1/1) ... [2022-11-22 00:22:28,295 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@624ceb96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:22:28, skipping insertion in model container [2022-11-22 00:22:28,295 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:22:28" (1/1) ... [2022-11-22 00:22:28,303 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 00:22:28,317 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 00:22:28,490 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee36ba9e-6ce0-4cf0-8f66-50420cdab9b7/sv-benchmarks/c/ldv-regression/test_union.c_1.i[296,309] [2022-11-22 00:22:28,504 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 00:22:28,515 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 00:22:28,527 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee36ba9e-6ce0-4cf0-8f66-50420cdab9b7/sv-benchmarks/c/ldv-regression/test_union.c_1.i[296,309] [2022-11-22 00:22:28,531 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 00:22:28,544 INFO L208 MainTranslator]: Completed translation [2022-11-22 00:22:28,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:22:28 WrapperNode [2022-11-22 00:22:28,545 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 00:22:28,546 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 00:22:28,546 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 00:22:28,546 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 00:22:28,554 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:22:28" (1/1) ... [2022-11-22 00:22:28,561 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:22:28" (1/1) ... [2022-11-22 00:22:28,575 INFO L138 Inliner]: procedures = 13, calls = 12, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 21 [2022-11-22 00:22:28,575 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 00:22:28,576 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 00:22:28,576 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 00:22:28,576 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 00:22:28,585 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:22:28" (1/1) ... [2022-11-22 00:22:28,586 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:22:28" (1/1) ... [2022-11-22 00:22:28,587 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:22:28" (1/1) ... [2022-11-22 00:22:28,587 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:22:28" (1/1) ... [2022-11-22 00:22:28,591 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:22:28" (1/1) ... [2022-11-22 00:22:28,592 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:22:28" (1/1) ... [2022-11-22 00:22:28,593 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:22:28" (1/1) ... [2022-11-22 00:22:28,594 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:22:28" (1/1) ... [2022-11-22 00:22:28,596 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 00:22:28,596 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 00:22:28,597 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 00:22:28,597 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 00:22:28,598 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:22:28" (1/1) ... [2022-11-22 00:22:28,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 00:22:28,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee36ba9e-6ce0-4cf0-8f66-50420cdab9b7/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:22:28,629 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee36ba9e-6ce0-4cf0-8f66-50420cdab9b7/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 00:22:28,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee36ba9e-6ce0-4cf0-8f66-50420cdab9b7/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 00:22:28,676 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 00:22:28,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 00:22:28,677 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 00:22:28,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 00:22:28,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 00:22:28,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 00:22:28,678 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 00:22:28,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 00:22:28,761 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 00:22:28,763 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 00:22:28,929 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 00:22:28,946 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 00:22:28,946 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-22 00:22:28,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:22:28 BoogieIcfgContainer [2022-11-22 00:22:28,949 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 00:22:28,952 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 00:22:28,952 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 00:22:28,955 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 00:22:28,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:22:28" (1/3) ... [2022-11-22 00:22:28,956 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@303fd53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:22:28, skipping insertion in model container [2022-11-22 00:22:28,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:22:28" (2/3) ... [2022-11-22 00:22:28,976 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@303fd53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:22:28, skipping insertion in model container [2022-11-22 00:22:28,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:22:28" (3/3) ... [2022-11-22 00:22:28,977 INFO L112 eAbstractionObserver]: Analyzing ICFG test_union.c_1.i [2022-11-22 00:22:29,013 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 00:22:29,013 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-22 00:22:29,064 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 00:22:29,071 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6a89f599, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 00:22:29,071 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-22 00:22:29,076 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 7 states have (on average 2.0) internal successors, (14), 13 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) [2022-11-22 00:22:29,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-22 00:22:29,082 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:22:29,083 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-22 00:22:29,084 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2022-11-22 00:22:29,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:22:29,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1771, now seen corresponding path program 1 times [2022-11-22 00:22:29,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:22:29,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121875961] [2022-11-22 00:22:29,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:22:29,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:22:29,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:22:29,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:22:29,355 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:22:29,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121875961] [2022-11-22 00:22:29,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121875961] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:22:29,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:22:29,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 00:22:29,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531211981] [2022-11-22 00:22:29,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:22:29,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:22:29,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:22:29,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:22:29,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:22:29,409 INFO L87 Difference]: Start difference. First operand has 14 states, 7 states have (on average 2.0) internal successors, (14), 13 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) 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) [2022-11-22 00:22:29,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:22:29,443 INFO L93 Difference]: Finished difference Result 12 states and 11 transitions. [2022-11-22 00:22:29,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:22:29,446 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 [2022-11-22 00:22:29,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:22:29,454 INFO L225 Difference]: With dead ends: 12 [2022-11-22 00:22:29,454 INFO L226 Difference]: Without dead ends: 11 [2022-11-22 00:22:29,456 INFO L412 NwaCegarLoop]: 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 [2022-11-22 00:22:29,460 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 7 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 00:22:29,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 4 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 00:22:29,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-22 00:22:29,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2022-11-22 00:22:29,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 10 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) [2022-11-22 00:22:29,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 10 transitions. [2022-11-22 00:22:29,494 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 10 transitions. Word has length 2 [2022-11-22 00:22:29,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:22:29,494 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 10 transitions. [2022-11-22 00:22:29,495 INFO L496 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) [2022-11-22 00:22:29,495 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2022-11-22 00:22:29,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-22 00:22:29,495 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:22:29,495 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-22 00:22:29,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 00:22:29,496 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2022-11-22 00:22:29,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:22:29,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1772, now seen corresponding path program 1 times [2022-11-22 00:22:29,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:22:29,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458879822] [2022-11-22 00:22:29,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:22:29,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:22:29,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:22:29,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:22:29,614 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:22:29,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458879822] [2022-11-22 00:22:29,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458879822] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:22:29,615 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:22:29,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 00:22:29,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936383442] [2022-11-22 00:22:29,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:22:29,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:22:29,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:22:29,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:22:29,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:22:29,618 INFO L87 Difference]: Start difference. First operand 11 states and 10 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) [2022-11-22 00:22:29,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:22:29,645 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2022-11-22 00:22:29,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:22:29,646 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 [2022-11-22 00:22:29,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:22:29,647 INFO L225 Difference]: With dead ends: 9 [2022-11-22 00:22:29,647 INFO L226 Difference]: Without dead ends: 9 [2022-11-22 00:22:29,647 INFO L412 NwaCegarLoop]: 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 [2022-11-22 00:22:29,649 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 5 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 00:22:29,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 5 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 00:22:29,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2022-11-22 00:22:29,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2022-11-22 00:22:29,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 8 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) [2022-11-22 00:22:29,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2022-11-22 00:22:29,653 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 2 [2022-11-22 00:22:29,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:22:29,653 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2022-11-22 00:22:29,653 INFO L496 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) [2022-11-22 00:22:29,653 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2022-11-22 00:22:29,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-22 00:22:29,654 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:22:29,654 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-22 00:22:29,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 00:22:29,655 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2022-11-22 00:22:29,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:22:29,656 INFO L85 PathProgramCache]: Analyzing trace with hash 52736254, now seen corresponding path program 1 times [2022-11-22 00:22:29,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:22:29,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398308728] [2022-11-22 00:22:29,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:22:29,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:22:29,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:22:29,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:22:29,736 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:22:29,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398308728] [2022-11-22 00:22:29,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398308728] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:22:29,736 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:22:29,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 00:22:29,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671508086] [2022-11-22 00:22:29,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:22:29,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 00:22:29,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:22:29,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 00:22:29,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 00:22:29,739 INFO L87 Difference]: Start difference. First operand 9 states and 8 transitions. Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:22:29,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:22:29,766 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2022-11-22 00:22:29,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 00:22:29,767 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-22 00:22:29,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:22:29,767 INFO L225 Difference]: With dead ends: 7 [2022-11-22 00:22:29,768 INFO L226 Difference]: Without dead ends: 7 [2022-11-22 00:22:29,768 INFO L412 NwaCegarLoop]: 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 [2022-11-22 00:22:29,769 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 3 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 00:22:29,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 5 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 00:22:29,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2022-11-22 00:22:29,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2022-11-22 00:22:29,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.0) internal successors, (6), 6 states have internal predecessors, (6), 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) [2022-11-22 00:22:29,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2022-11-22 00:22:29,773 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 5 [2022-11-22 00:22:29,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:22:29,773 INFO L495 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2022-11-22 00:22:29,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:22:29,773 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2022-11-22 00:22:29,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-22 00:22:29,774 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:22:29,774 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-22 00:22:29,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 00:22:29,775 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2022-11-22 00:22:29,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:22:29,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1634822129, now seen corresponding path program 1 times [2022-11-22 00:22:29,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:22:29,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144032657] [2022-11-22 00:22:29,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:22:29,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:22:29,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:22:29,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:22:29,876 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:22:29,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144032657] [2022-11-22 00:22:29,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144032657] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:22:29,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:22:29,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 00:22:29,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052233393] [2022-11-22 00:22:29,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:22:29,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 00:22:29,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:22:29,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 00:22:29,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 00:22:29,879 INFO L87 Difference]: Start difference. First operand 7 states and 6 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-11-22 00:22:29,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:22:29,890 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2022-11-22 00:22:29,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 00:22:29,890 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2022-11-22 00:22:29,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:22:29,891 INFO L225 Difference]: With dead ends: 6 [2022-11-22 00:22:29,891 INFO L226 Difference]: Without dead ends: 0 [2022-11-22 00:22:29,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 00:22:29,893 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 00:22:29,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 00:22:29,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-22 00:22:29,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-22 00:22:29,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2022-11-22 00:22:29,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-22 00:22:29,895 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2022-11-22 00:22:29,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:22:29,895 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-22 00:22:29,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-11-22 00:22:29,896 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-22 00:22:29,896 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-22 00:22:29,898 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 6 remaining) [2022-11-22 00:22:29,899 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 6 remaining) [2022-11-22 00:22:29,899 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 6 remaining) [2022-11-22 00:22:29,900 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 6 remaining) [2022-11-22 00:22:29,900 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (1 of 6 remaining) [2022-11-22 00:22:29,900 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (0 of 6 remaining) [2022-11-22 00:22:29,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 00:22:29,904 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-11-22 00:22:29,907 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-22 00:22:29,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 12:22:29 BoogieIcfgContainer [2022-11-22 00:22:29,910 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-22 00:22:29,911 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-22 00:22:29,911 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-22 00:22:29,911 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-22 00:22:29,912 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:22:28" (3/4) ... [2022-11-22 00:22:29,915 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-22 00:22:29,928 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2022-11-22 00:22:29,929 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-11-22 00:22:29,929 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-22 00:22:29,929 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-22 00:22:29,966 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee36ba9e-6ce0-4cf0-8f66-50420cdab9b7/bin/utaipan-g80aRyZoba/witness.graphml [2022-11-22 00:22:29,967 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-22 00:22:29,968 INFO L158 Benchmark]: Toolchain (without parser) took 1680.42ms. Allocated memory is still 161.5MB. Free memory was 128.9MB in the beginning and 64.8MB in the end (delta: 64.1MB). Peak memory consumption was 61.1MB. Max. memory is 16.1GB. [2022-11-22 00:22:29,968 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 125.8MB. Free memory is still 94.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 00:22:29,968 INFO L158 Benchmark]: CACSL2BoogieTranslator took 256.87ms. Allocated memory is still 161.5MB. Free memory was 128.9MB in the beginning and 127.8MB in the end (delta: 1.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-22 00:22:29,969 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.50ms. Allocated memory is still 161.5MB. Free memory was 127.8MB in the beginning and 126.5MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-22 00:22:29,969 INFO L158 Benchmark]: Boogie Preprocessor took 19.62ms. Allocated memory is still 161.5MB. Free memory was 126.5MB in the beginning and 125.3MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 00:22:29,970 INFO L158 Benchmark]: RCFGBuilder took 352.87ms. Allocated memory is still 161.5MB. Free memory was 125.3MB in the beginning and 114.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-22 00:22:29,970 INFO L158 Benchmark]: TraceAbstraction took 958.29ms. Allocated memory is still 161.5MB. Free memory was 114.0MB in the beginning and 66.9MB in the end (delta: 47.0MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. [2022-11-22 00:22:29,971 INFO L158 Benchmark]: Witness Printer took 56.08ms. Allocated memory is still 161.5MB. Free memory was 66.9MB in the beginning and 64.8MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-22 00:22:29,980 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 125.8MB. Free memory is still 94.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 256.87ms. Allocated memory is still 161.5MB. Free memory was 128.9MB in the beginning and 127.8MB in the end (delta: 1.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.50ms. Allocated memory is still 161.5MB. Free memory was 127.8MB in the beginning and 126.5MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 19.62ms. Allocated memory is still 161.5MB. Free memory was 126.5MB in the beginning and 125.3MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 352.87ms. Allocated memory is still 161.5MB. Free memory was 125.3MB in the beginning and 114.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 958.29ms. Allocated memory is still 161.5MB. Free memory was 114.0MB in the beginning and 66.9MB in the end (delta: 47.0MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. * Witness Printer took 56.08ms. Allocated memory is still 161.5MB. Free memory was 66.9MB in the beginning and 64.8MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. 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 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 8]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 25]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 6 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, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 15 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 15 mSDsluCounter, 16 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 31 IncrementalHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 11 mSDtfsCounter, 31 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=0, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 53 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-22 00:22:30,001 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee36ba9e-6ce0-4cf0-8f66-50420cdab9b7/bin/utaipan-g80aRyZoba/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: TRUE