./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/list-ext-properties/simple-ext.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124c215c-8c2a-4ee0-bedd-ea454cba767a/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124c215c-8c2a-4ee0-bedd-ea454cba767a/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124c215c-8c2a-4ee0-bedd-ea454cba767a/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124c215c-8c2a-4ee0-bedd-ea454cba767a/bin/utaipan-TEXQjIfE4P/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext-properties/simple-ext.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124c215c-8c2a-4ee0-bedd-ea454cba767a/bin/utaipan-TEXQjIfE4P/config/svcomp-MemCleanup-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124c215c-8c2a-4ee0-bedd-ea454cba767a/bin/utaipan-TEXQjIfE4P --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 79d8454f49f42d774b494771accf13f0b47382db45ac5cfdb4c7afee633f8cd7 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 23:38:58,093 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 23:38:58,096 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 23:38:58,138 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 23:38:58,138 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 23:38:58,140 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 23:38:58,142 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 23:38:58,145 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 23:38:58,148 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 23:38:58,149 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 23:38:58,151 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 23:38:58,153 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 23:38:58,153 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 23:38:58,155 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 23:38:58,157 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 23:38:58,159 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 23:38:58,160 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 23:38:58,162 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 23:38:58,165 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 23:38:58,168 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 23:38:58,170 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 23:38:58,172 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 23:38:58,174 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 23:38:58,175 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 23:38:58,180 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 23:38:58,180 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 23:38:58,181 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 23:38:58,183 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 23:38:58,183 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 23:38:58,185 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 23:38:58,186 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 23:38:58,187 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 23:38:58,188 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 23:38:58,189 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 23:38:58,191 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 23:38:58,191 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 23:38:58,192 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 23:38:58,193 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 23:38:58,193 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 23:38:58,195 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 23:38:58,196 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 23:38:58,197 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124c215c-8c2a-4ee0-bedd-ea454cba767a/bin/utaipan-TEXQjIfE4P/config/svcomp-MemCleanup-32bit-Taipan_Default.epf [2021-11-20 23:38:58,231 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 23:38:58,231 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 23:38:58,232 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 23:38:58,233 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 23:38:58,234 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 23:38:58,234 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 23:38:58,234 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 23:38:58,235 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 23:38:58,235 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 23:38:58,235 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-20 23:38:58,236 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 23:38:58,236 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 23:38:58,236 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-20 23:38:58,237 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-20 23:38:58,237 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 23:38:58,237 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-20 23:38:58,237 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-20 23:38:58,238 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-20 23:38:58,239 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 23:38:58,239 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 23:38:58,239 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 23:38:58,240 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 23:38:58,240 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 23:38:58,240 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 23:38:58,241 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 23:38:58,241 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 23:38:58,241 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-20 23:38:58,241 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-20 23:38:58,242 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 23:38:58,242 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-20 23:38:58,242 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 23:38:58,243 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 23:38:58,243 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 23:38:58,243 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 23:38:58,243 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:38:58,244 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 23:38:58,244 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 23:38:58,244 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-20 23:38:58,245 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 23:38:58,245 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 23:38:58,245 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 23:38:58,245 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_124c215c-8c2a-4ee0-bedd-ea454cba767a/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124c215c-8c2a-4ee0-bedd-ea454cba767a/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 79d8454f49f42d774b494771accf13f0b47382db45ac5cfdb4c7afee633f8cd7 [2021-11-20 23:38:58,587 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 23:38:58,625 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 23:38:58,628 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 23:38:58,629 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 23:38:58,630 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 23:38:58,632 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124c215c-8c2a-4ee0-bedd-ea454cba767a/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/list-ext-properties/simple-ext.i [2021-11-20 23:38:58,707 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124c215c-8c2a-4ee0-bedd-ea454cba767a/bin/utaipan-TEXQjIfE4P/data/fafd47134/2cf0398fb5b24ac8b0eb05f001c2835a/FLAGf92dd70a9 [2021-11-20 23:38:59,454 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 23:38:59,455 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124c215c-8c2a-4ee0-bedd-ea454cba767a/sv-benchmarks/c/list-ext-properties/simple-ext.i [2021-11-20 23:38:59,479 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124c215c-8c2a-4ee0-bedd-ea454cba767a/bin/utaipan-TEXQjIfE4P/data/fafd47134/2cf0398fb5b24ac8b0eb05f001c2835a/FLAGf92dd70a9 [2021-11-20 23:38:59,647 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124c215c-8c2a-4ee0-bedd-ea454cba767a/bin/utaipan-TEXQjIfE4P/data/fafd47134/2cf0398fb5b24ac8b0eb05f001c2835a [2021-11-20 23:38:59,650 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 23:38:59,652 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 23:38:59,654 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 23:38:59,654 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 23:38:59,661 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 23:38:59,667 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:38:59" (1/1) ... [2021-11-20 23:38:59,668 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c070959 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:38:59, skipping insertion in model container [2021-11-20 23:38:59,669 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:38:59" (1/1) ... [2021-11-20 23:38:59,679 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 23:38:59,752 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 23:39:00,263 WARN L230 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_124c215c-8c2a-4ee0-bedd-ea454cba767a/sv-benchmarks/c/list-ext-properties/simple-ext.i[23272,23285] [2021-11-20 23:39:00,272 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:39:00,286 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 23:39:00,333 WARN L230 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_124c215c-8c2a-4ee0-bedd-ea454cba767a/sv-benchmarks/c/list-ext-properties/simple-ext.i[23272,23285] [2021-11-20 23:39:00,336 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:39:00,372 INFO L208 MainTranslator]: Completed translation [2021-11-20 23:39:00,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:39:00 WrapperNode [2021-11-20 23:39:00,373 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 23:39:00,374 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 23:39:00,375 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 23:39:00,375 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 23:39:00,384 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:39:00" (1/1) ... [2021-11-20 23:39:00,401 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:39:00" (1/1) ... [2021-11-20 23:39:00,426 INFO L137 Inliner]: procedures = 124, calls = 19, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 78 [2021-11-20 23:39:00,426 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 23:39:00,427 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 23:39:00,428 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 23:39:00,428 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 23:39:00,437 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:39:00" (1/1) ... [2021-11-20 23:39:00,438 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:39:00" (1/1) ... [2021-11-20 23:39:00,442 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:39:00" (1/1) ... [2021-11-20 23:39:00,443 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:39:00" (1/1) ... [2021-11-20 23:39:00,451 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:39:00" (1/1) ... [2021-11-20 23:39:00,456 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:39:00" (1/1) ... [2021-11-20 23:39:00,465 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:39:00" (1/1) ... [2021-11-20 23:39:00,469 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 23:39:00,470 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 23:39:00,470 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 23:39:00,471 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 23:39:00,472 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:39:00" (1/1) ... [2021-11-20 23:39:00,493 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:39:00,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124c215c-8c2a-4ee0-bedd-ea454cba767a/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:39:00,532 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124c215c-8c2a-4ee0-bedd-ea454cba767a/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 23:39:00,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124c215c-8c2a-4ee0-bedd-ea454cba767a/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 23:39:00,590 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-11-20 23:39:00,590 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-11-20 23:39:00,591 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 23:39:00,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 23:39:00,591 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 23:39:00,591 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 23:39:00,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 23:39:00,592 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 23:39:00,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 23:39:00,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 23:39:00,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 23:39:00,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 23:39:00,749 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 23:39:00,751 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 23:39:00,792 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-11-20 23:39:01,040 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 23:39:01,125 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 23:39:01,125 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-20 23:39:01,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:39:01 BoogieIcfgContainer [2021-11-20 23:39:01,141 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 23:39:01,144 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 23:39:01,144 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 23:39:01,160 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 23:39:01,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:38:59" (1/3) ... [2021-11-20 23:39:01,162 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58d22d28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:39:01, skipping insertion in model container [2021-11-20 23:39:01,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:39:00" (2/3) ... [2021-11-20 23:39:01,163 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58d22d28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:39:01, skipping insertion in model container [2021-11-20 23:39:01,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:39:01" (3/3) ... [2021-11-20 23:39:01,164 INFO L111 eAbstractionObserver]: Analyzing ICFG simple-ext.i [2021-11-20 23:39:01,173 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 23:39:01,174 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 21 error locations. [2021-11-20 23:39:01,242 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 23:39:01,255 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 [2021-11-20 23:39:01,256 INFO L340 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2021-11-20 23:39:01,280 INFO L276 IsEmpty]: Start isEmpty. Operand has 48 states, 24 states have (on average 2.1666666666666665) internal successors, (52), 46 states have internal predecessors, (52), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:39:01,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-20 23:39:01,288 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:39:01,289 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-20 23:39:01,290 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 17 more)] === [2021-11-20 23:39:01,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:39:01,296 INFO L85 PathProgramCache]: Analyzing trace with hash 144472609, now seen corresponding path program 1 times [2021-11-20 23:39:01,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:39:01,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219839614] [2021-11-20 23:39:01,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:39:01,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:39:01,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:39:01,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:39:01,525 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:39:01,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219839614] [2021-11-20 23:39:01,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219839614] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:39:01,527 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:39:01,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 23:39:01,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562643943] [2021-11-20 23:39:01,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:39:01,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-20 23:39:01,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:39:01,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-20 23:39:01,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 23:39:01,579 INFO L87 Difference]: Start difference. First operand has 48 states, 24 states have (on average 2.1666666666666665) internal successors, (52), 46 states have internal predecessors, (52), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:39:01,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:39:01,662 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2021-11-20 23:39:01,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 23:39:01,671 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-20 23:39:01,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:39:01,679 INFO L225 Difference]: With dead ends: 48 [2021-11-20 23:39:01,679 INFO L226 Difference]: Without dead ends: 43 [2021-11-20 23:39:01,681 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 23:39:01,686 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:39:01,688 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 42 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:39:01,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-11-20 23:39:01,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-11-20 23:39:01,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 22 states have (on average 2.0454545454545454) internal successors, (45), 42 states have internal predecessors, (45), 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) [2021-11-20 23:39:01,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2021-11-20 23:39:01,726 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 5 [2021-11-20 23:39:01,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:39:01,726 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2021-11-20 23:39:01,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:39:01,727 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2021-11-20 23:39:01,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-20 23:39:01,727 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:39:01,728 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-20 23:39:01,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 23:39:01,728 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 17 more)] === [2021-11-20 23:39:01,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:39:01,729 INFO L85 PathProgramCache]: Analyzing trace with hash 183758781, now seen corresponding path program 1 times [2021-11-20 23:39:01,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:39:01,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576559864] [2021-11-20 23:39:01,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:39:01,730 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:39:01,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:39:01,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:39:01,839 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:39:01,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576559864] [2021-11-20 23:39:01,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576559864] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:39:01,840 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:39:01,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 23:39:01,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533867798] [2021-11-20 23:39:01,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:39:01,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 23:39:01,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:39:01,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 23:39:01,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:39:01,844 INFO L87 Difference]: Start difference. First operand 43 states and 45 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) [2021-11-20 23:39:02,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:39:02,057 INFO L93 Difference]: Finished difference Result 57 states and 61 transitions. [2021-11-20 23:39:02,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 23:39:02,058 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 [2021-11-20 23:39:02,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:39:02,060 INFO L225 Difference]: With dead ends: 57 [2021-11-20 23:39:02,062 INFO L226 Difference]: Without dead ends: 57 [2021-11-20 23:39:02,062 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:39:02,065 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 70 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:39:02,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 15 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 23:39:02,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-11-20 23:39:02,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 46. [2021-11-20 23:39:02,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 30 states have (on average 1.8333333333333333) internal successors, (55), 45 states have internal predecessors, (55), 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) [2021-11-20 23:39:02,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 55 transitions. [2021-11-20 23:39:02,083 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 55 transitions. Word has length 6 [2021-11-20 23:39:02,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:39:02,088 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 55 transitions. [2021-11-20 23:39:02,090 INFO L471 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) [2021-11-20 23:39:02,090 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 55 transitions. [2021-11-20 23:39:02,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-20 23:39:02,092 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:39:02,092 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-20 23:39:02,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 23:39:02,092 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 17 more)] === [2021-11-20 23:39:02,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:39:02,093 INFO L85 PathProgramCache]: Analyzing trace with hash 183758782, now seen corresponding path program 1 times [2021-11-20 23:39:02,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:39:02,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68167633] [2021-11-20 23:39:02,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:39:02,095 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:39:02,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:39:02,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:39:02,208 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:39:02,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68167633] [2021-11-20 23:39:02,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68167633] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:39:02,209 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:39:02,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 23:39:02,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766914098] [2021-11-20 23:39:02,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:39:02,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 23:39:02,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:39:02,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 23:39:02,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:39:02,212 INFO L87 Difference]: Start difference. First operand 46 states and 55 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) [2021-11-20 23:39:02,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:39:02,381 INFO L93 Difference]: Finished difference Result 60 states and 64 transitions. [2021-11-20 23:39:02,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 23:39:02,382 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 [2021-11-20 23:39:02,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:39:02,383 INFO L225 Difference]: With dead ends: 60 [2021-11-20 23:39:02,383 INFO L226 Difference]: Without dead ends: 60 [2021-11-20 23:39:02,384 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:39:02,385 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 71 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:39:02,386 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 19 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:39:02,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-11-20 23:39:02,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 53. [2021-11-20 23:39:02,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 37 states have (on average 1.5945945945945945) internal successors, (59), 52 states have internal predecessors, (59), 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) [2021-11-20 23:39:02,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 59 transitions. [2021-11-20 23:39:02,394 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 59 transitions. Word has length 6 [2021-11-20 23:39:02,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:39:02,395 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 59 transitions. [2021-11-20 23:39:02,395 INFO L471 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) [2021-11-20 23:39:02,395 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 59 transitions. [2021-11-20 23:39:02,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-20 23:39:02,396 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:39:02,396 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:39:02,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 23:39:02,397 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 17 more)] === [2021-11-20 23:39:02,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:39:02,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1946737033, now seen corresponding path program 1 times [2021-11-20 23:39:02,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:39:02,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107716301] [2021-11-20 23:39:02,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:39:02,399 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:39:02,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:39:02,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:39:02,480 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:39:02,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107716301] [2021-11-20 23:39:02,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107716301] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:39:02,481 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:39:02,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:39:02,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137315688] [2021-11-20 23:39:02,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:39:02,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 23:39:02,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:39:02,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 23:39:02,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:39:02,483 INFO L87 Difference]: Start difference. First operand 53 states and 59 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 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) [2021-11-20 23:39:02,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:39:02,604 INFO L93 Difference]: Finished difference Result 58 states and 61 transitions. [2021-11-20 23:39:02,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 23:39:02,605 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 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 [2021-11-20 23:39:02,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:39:02,606 INFO L225 Difference]: With dead ends: 58 [2021-11-20 23:39:02,606 INFO L226 Difference]: Without dead ends: 58 [2021-11-20 23:39:02,607 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:39:02,608 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 65 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:39:02,609 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 30 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:39:02,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-11-20 23:39:02,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 53. [2021-11-20 23:39:02,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 37 states have (on average 1.5405405405405406) internal successors, (57), 52 states have internal predecessors, (57), 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) [2021-11-20 23:39:02,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2021-11-20 23:39:02,617 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 10 [2021-11-20 23:39:02,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:39:02,618 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2021-11-20 23:39:02,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 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) [2021-11-20 23:39:02,627 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2021-11-20 23:39:02,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-20 23:39:02,628 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:39:02,628 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:39:02,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 23:39:02,630 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 17 more)] === [2021-11-20 23:39:02,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:39:02,634 INFO L85 PathProgramCache]: Analyzing trace with hash -221270335, now seen corresponding path program 1 times [2021-11-20 23:39:02,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:39:02,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587779111] [2021-11-20 23:39:02,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:39:02,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:39:02,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 23:39:02,664 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 23:39:02,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 23:39:02,718 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-20 23:39:02,718 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-20 23:39:02,719 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (20 of 21 remaining) [2021-11-20 23:39:02,722 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION (19 of 21 remaining) [2021-11-20 23:39:02,722 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION (18 of 21 remaining) [2021-11-20 23:39:02,723 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION (17 of 21 remaining) [2021-11-20 23:39:02,723 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION (16 of 21 remaining) [2021-11-20 23:39:02,723 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION (15 of 21 remaining) [2021-11-20 23:39:02,724 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION (14 of 21 remaining) [2021-11-20 23:39:02,724 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION (13 of 21 remaining) [2021-11-20 23:39:02,724 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION (12 of 21 remaining) [2021-11-20 23:39:02,724 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION (11 of 21 remaining) [2021-11-20 23:39:02,725 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATION (10 of 21 remaining) [2021-11-20 23:39:02,725 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATION (9 of 21 remaining) [2021-11-20 23:39:02,725 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATION (8 of 21 remaining) [2021-11-20 23:39:02,726 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATION (7 of 21 remaining) [2021-11-20 23:39:02,726 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATION (6 of 21 remaining) [2021-11-20 23:39:02,726 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATION (5 of 21 remaining) [2021-11-20 23:39:02,726 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATION (4 of 21 remaining) [2021-11-20 23:39:02,727 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE (3 of 21 remaining) [2021-11-20 23:39:02,727 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE (2 of 21 remaining) [2021-11-20 23:39:02,727 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE (1 of 21 remaining) [2021-11-20 23:39:02,728 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK (0 of 21 remaining) [2021-11-20 23:39:02,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 23:39:02,732 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2021-11-20 23:39:02,736 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 23:39:02,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 11:39:02 BoogieIcfgContainer [2021-11-20 23:39:02,763 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 23:39:02,764 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 23:39:02,764 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 23:39:02,764 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 23:39:02,765 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:39:01" (3/4) ... [2021-11-20 23:39:02,767 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-20 23:39:02,807 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124c215c-8c2a-4ee0-bedd-ea454cba767a/bin/utaipan-TEXQjIfE4P/witness.graphml [2021-11-20 23:39:02,808 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 23:39:02,808 INFO L158 Benchmark]: Toolchain (without parser) took 3156.65ms. Allocated memory is still 125.8MB. Free memory was 89.1MB in the beginning and 69.5MB in the end (delta: 19.6MB). Peak memory consumption was 17.7MB. Max. memory is 16.1GB. [2021-11-20 23:39:02,809 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 125.8MB. Free memory is still 106.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 23:39:02,809 INFO L158 Benchmark]: CACSL2BoogieTranslator took 719.58ms. Allocated memory is still 125.8MB. Free memory was 89.0MB in the beginning and 94.2MB in the end (delta: -5.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 23:39:02,810 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.33ms. Allocated memory is still 125.8MB. Free memory was 94.2MB in the beginning and 92.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 23:39:02,810 INFO L158 Benchmark]: Boogie Preprocessor took 41.90ms. Allocated memory is still 125.8MB. Free memory was 92.6MB in the beginning and 91.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 23:39:02,811 INFO L158 Benchmark]: RCFGBuilder took 671.22ms. Allocated memory is still 125.8MB. Free memory was 91.2MB in the beginning and 75.4MB in the end (delta: 15.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-20 23:39:02,811 INFO L158 Benchmark]: TraceAbstraction took 1619.10ms. Allocated memory is still 125.8MB. Free memory was 74.4MB in the beginning and 71.6MB in the end (delta: 2.8MB). Peak memory consumption was 3.4MB. Max. memory is 16.1GB. [2021-11-20 23:39:02,811 INFO L158 Benchmark]: Witness Printer took 44.06ms. Allocated memory is still 125.8MB. Free memory was 71.6MB in the beginning and 69.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 23:39:02,814 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 125.8MB. Free memory is still 106.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 719.58ms. Allocated memory is still 125.8MB. Free memory was 89.0MB in the beginning and 94.2MB in the end (delta: -5.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.33ms. Allocated memory is still 125.8MB. Free memory was 94.2MB in the beginning and 92.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.90ms. Allocated memory is still 125.8MB. Free memory was 92.6MB in the beginning and 91.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 671.22ms. Allocated memory is still 125.8MB. Free memory was 91.2MB in the beginning and 75.4MB in the end (delta: 15.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 1619.10ms. Allocated memory is still 125.8MB. Free memory was 74.4MB in the beginning and 71.6MB in the end (delta: 2.8MB). Peak memory consumption was 3.4MB. Max. memory is 16.1GB. * Witness Printer took 44.06ms. Allocated memory is still 125.8MB. Free memory was 71.6MB in the beginning and 69.5MB in the end (delta: 2.1MB). 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 - CounterExampleResult [Line: 551]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L532] List a = (List) malloc(sizeof(struct node)); [L533] COND FALSE !(a == 0) VAL [a={-1:0}] [L534] List t; [L535] List p = a; [L536] int i = 0; VAL [a={-1:0}, i=0, p={-1:0}] [L537] i < 30 && __VERIFIER_nondet_int() [L537] i < 30 && __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=0, a={-1:0}, i=0, i < 30 && __VERIFIER_nondet_int()=0, p={-1:0}] [L537] COND FALSE !(i < 30 && __VERIFIER_nondet_int()) [L545] p->h = i VAL [a={-1:0}, i=0, p={-1:0}] [L546] p->n = 0 [L547] p = a [L548] i = 0 VAL [a={-1:0}, i=0, p={-1:0}] [L549] COND TRUE p!=0 VAL [a={-1:0}, i=0, p={-1:0}] [L550] EXPR p->h VAL [a={-1:0}, i=0, p={-1:0}, p->h=0] [L550] COND TRUE p->h != 1 [L551] reach_error() VAL [a={-1:0}, i=0, p={-1:0}] - 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: 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. - UnprovableResult [Line: 542]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 542]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 545]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 545]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 546]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 546]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 550]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 550]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 553]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 553]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 558]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 558]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 559]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 559]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 559]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 531]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 49 locations, 21 error locations. Started 1 CEGAR loops. OverallTime: 1.5s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 206 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 206 mSDsluCounter, 106 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 26 mSDsCounter, 50 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 171 IncrementalHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 50 mSolverCounterUnsat, 84 mSDtfsCounter, 171 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=53occurred in iteration=3, InterpolantAutomatonStates: 15, 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, 23 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 123 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-11-20 23:39:02,870 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_124c215c-8c2a-4ee0-bedd-ea454cba767a/bin/utaipan-TEXQjIfE4P/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-memcleanup)