./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6a47aea7 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2fd17e2-da33-4666-80ea-e6fea56af07d/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2fd17e2-da33-4666-80ea-e6fea56af07d/bin/utaipan-fb15Y9Yzbl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2fd17e2-da33-4666-80ea-e6fea56af07d/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2fd17e2-da33-4666-80ea-e6fea56af07d/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2fd17e2-da33-4666-80ea-e6fea56af07d/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2fd17e2-da33-4666-80ea-e6fea56af07d/bin/utaipan-fb15Y9Yzbl --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash e6fe8c59d377aa736bd14f3fafaa24b496bb4607101882bb7ce5966b11428bcb --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 17:38:44,514 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 17:38:44,517 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 17:38:44,572 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 17:38:44,573 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 17:38:44,577 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 17:38:44,579 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 17:38:44,583 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 17:38:44,586 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 17:38:44,592 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 17:38:44,593 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 17:38:44,595 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 17:38:44,596 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 17:38:44,598 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 17:38:44,600 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 17:38:44,605 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 17:38:44,606 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 17:38:44,608 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 17:38:44,610 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 17:38:44,617 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 17:38:44,619 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 17:38:44,621 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 17:38:44,624 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 17:38:44,625 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 17:38:44,634 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 17:38:44,634 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 17:38:44,635 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 17:38:44,637 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 17:38:44,638 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 17:38:44,639 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 17:38:44,640 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 17:38:44,641 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 17:38:44,643 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 17:38:44,644 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 17:38:44,645 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 17:38:44,646 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 17:38:44,646 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 17:38:44,647 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 17:38:44,647 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 17:38:44,648 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 17:38:44,649 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 17:38:44,650 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2fd17e2-da33-4666-80ea-e6fea56af07d/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-23 17:38:44,692 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 17:38:44,692 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 17:38:44,693 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 17:38:44,693 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 17:38:44,694 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 17:38:44,695 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 17:38:44,695 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 17:38:44,695 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 17:38:44,696 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 17:38:44,696 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 17:38:44,697 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 17:38:44,697 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 17:38:44,698 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 17:38:44,698 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 17:38:44,698 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 17:38:44,699 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 17:38:44,699 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 17:38:44,699 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 17:38:44,700 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 17:38:44,700 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 17:38:44,701 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 17:38:44,701 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 17:38:44,701 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 17:38:44,701 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 17:38:44,702 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 17:38:44,702 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 17:38:44,702 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 17:38:44,703 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 17:38:44,703 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 17:38:44,703 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:38:44,704 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 17:38:44,704 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 17:38:44,704 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 17:38:44,705 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 17:38:44,705 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 17:38:44,705 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 17:38:44,706 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 17:38:44,706 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 17:38:44,706 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_c2fd17e2-da33-4666-80ea-e6fea56af07d/bin/utaipan-fb15Y9Yzbl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2fd17e2-da33-4666-80ea-e6fea56af07d/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e6fe8c59d377aa736bd14f3fafaa24b496bb4607101882bb7ce5966b11428bcb [2021-11-23 17:38:44,974 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 17:38:45,004 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 17:38:45,007 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 17:38:45,008 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 17:38:45,009 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 17:38:45,010 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2fd17e2-da33-4666-80ea-e6fea56af07d/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/ldv-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i [2021-11-23 17:38:45,101 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2fd17e2-da33-4666-80ea-e6fea56af07d/bin/utaipan-fb15Y9Yzbl/data/e1823ee99/7184df12e69d4ce2b8399cf320c23ac3/FLAG97dfc56c4 [2021-11-23 17:38:45,940 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 17:38:45,941 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2fd17e2-da33-4666-80ea-e6fea56af07d/sv-benchmarks/c/ldv-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i [2021-11-23 17:38:45,990 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2fd17e2-da33-4666-80ea-e6fea56af07d/bin/utaipan-fb15Y9Yzbl/data/e1823ee99/7184df12e69d4ce2b8399cf320c23ac3/FLAG97dfc56c4 [2021-11-23 17:38:46,487 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2fd17e2-da33-4666-80ea-e6fea56af07d/bin/utaipan-fb15Y9Yzbl/data/e1823ee99/7184df12e69d4ce2b8399cf320c23ac3 [2021-11-23 17:38:46,489 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 17:38:46,491 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 17:38:46,493 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 17:38:46,493 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 17:38:46,496 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 17:38:46,497 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:38:46" (1/1) ... [2021-11-23 17:38:46,499 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2254d56e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:38:46, skipping insertion in model container [2021-11-23 17:38:46,499 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:38:46" (1/1) ... [2021-11-23 17:38:46,506 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 17:38:46,608 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:38:47,734 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_c2fd17e2-da33-4666-80ea-e6fea56af07d/sv-benchmarks/c/ldv-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i[122264,122277] [2021-11-23 17:38:47,769 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:38:47,783 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 17:38:48,079 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_c2fd17e2-da33-4666-80ea-e6fea56af07d/sv-benchmarks/c/ldv-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i[122264,122277] [2021-11-23 17:38:48,101 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:38:48,147 INFO L208 MainTranslator]: Completed translation [2021-11-23 17:38:48,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:38:48 WrapperNode [2021-11-23 17:38:48,148 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 17:38:48,149 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 17:38:48,149 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 17:38:48,149 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 17:38:48,156 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:38:48" (1/1) ... [2021-11-23 17:38:48,255 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:38:48" (1/1) ... [2021-11-23 17:38:48,301 INFO L137 Inliner]: procedures = 143, calls = 514, calls flagged for inlining = 91, calls inlined = 29, statements flattened = 484 [2021-11-23 17:38:48,301 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 17:38:48,302 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 17:38:48,302 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 17:38:48,303 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 17:38:48,311 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:38:48" (1/1) ... [2021-11-23 17:38:48,311 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:38:48" (1/1) ... [2021-11-23 17:38:48,318 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:38:48" (1/1) ... [2021-11-23 17:38:48,333 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:38:48" (1/1) ... [2021-11-23 17:38:48,359 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:38:48" (1/1) ... [2021-11-23 17:38:48,362 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:38:48" (1/1) ... [2021-11-23 17:38:48,366 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:38:48" (1/1) ... [2021-11-23 17:38:48,379 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 17:38:48,380 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 17:38:48,390 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 17:38:48,390 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 17:38:48,392 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:38:48" (1/1) ... [2021-11-23 17:38:48,402 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:38:48,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2fd17e2-da33-4666-80ea-e6fea56af07d/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:38:48,426 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2fd17e2-da33-4666-80ea-e6fea56af07d/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 17:38:48,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2fd17e2-da33-4666-80ea-e6fea56af07d/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 17:38:48,468 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_config_buf [2021-11-23 17:38:48,469 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_config_buf [2021-11-23 17:38:48,469 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 17:38:48,469 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~TO~VOID [2021-11-23 17:38:48,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~TO~VOID [2021-11-23 17:38:48,469 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-23 17:38:48,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-23 17:38:48,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 17:38:48,470 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-23 17:38:48,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-23 17:38:48,470 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-23 17:38:48,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-23 17:38:48,470 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 17:38:48,471 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 17:38:48,471 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_has_feature [2021-11-23 17:38:48,471 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_has_feature [2021-11-23 17:38:48,471 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 17:38:48,471 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 17:38:48,471 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-11-23 17:38:48,472 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-11-23 17:38:48,472 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-23 17:38:48,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-23 17:38:48,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 17:38:48,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 17:38:48,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 17:38:48,473 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2021-11-23 17:38:48,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2021-11-23 17:38:48,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 17:38:48,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 17:38:48,473 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-23 17:38:48,473 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-23 17:38:48,754 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 17:38:48,757 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 17:38:49,263 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 17:38:49,382 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.addAll(ImmutableSet.java:313) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.addBranchEncoders(TransFormulaBuilder.java:170) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.parallelComposition(TransFormulaUtils.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.ParallelComposition.(ParallelComposition.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CodeBlockFactory.constructParallelComposition(CodeBlockFactory.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder$LargeBlockEncoding.composeParallel(CfgBuilder.java:1792) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder$LargeBlockEncoding.(CfgBuilder.java:1653) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder.createIcfg(CfgBuilder.java:280) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBuilderObserver.process(RCFGBuilderObserver.java:88) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.DFSTreeWalker.runObserver(DFSTreeWalker.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.runObserver(BaseWalker.java:93) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.run(BaseWalker.java:86) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-23 17:38:49,393 INFO L158 Benchmark]: Toolchain (without parser) took 2899.69ms. Allocated memory was 96.5MB in the beginning and 201.3MB in the end (delta: 104.9MB). Free memory was 56.1MB in the beginning and 152.2MB in the end (delta: -96.1MB). Peak memory consumption was 46.9MB. Max. memory is 16.1GB. [2021-11-23 17:38:49,395 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 96.5MB. Free memory was 53.9MB in the beginning and 53.9MB in the end (delta: 42.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:38:49,396 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1655.32ms. Allocated memory was 96.5MB in the beginning and 140.5MB in the end (delta: 44.0MB). Free memory was 55.9MB in the beginning and 65.5MB in the end (delta: -9.6MB). Peak memory consumption was 39.0MB. Max. memory is 16.1GB. [2021-11-23 17:38:49,397 INFO L158 Benchmark]: Boogie Procedure Inliner took 152.57ms. Allocated memory is still 140.5MB. Free memory was 65.5MB in the beginning and 97.9MB in the end (delta: -32.4MB). Peak memory consumption was 8.7MB. Max. memory is 16.1GB. [2021-11-23 17:38:49,398 INFO L158 Benchmark]: Boogie Preprocessor took 76.66ms. Allocated memory is still 140.5MB. Free memory was 97.9MB in the beginning and 94.4MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 17:38:49,399 INFO L158 Benchmark]: RCFGBuilder took 1010.33ms. Allocated memory was 140.5MB in the beginning and 201.3MB in the end (delta: 60.8MB). Free memory was 94.4MB in the beginning and 152.2MB in the end (delta: -57.8MB). Peak memory consumption was 41.1MB. Max. memory is 16.1GB. [2021-11-23 17:38:49,408 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 96.5MB. Free memory was 53.9MB in the beginning and 53.9MB in the end (delta: 42.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1655.32ms. Allocated memory was 96.5MB in the beginning and 140.5MB in the end (delta: 44.0MB). Free memory was 55.9MB in the beginning and 65.5MB in the end (delta: -9.6MB). Peak memory consumption was 39.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 152.57ms. Allocated memory is still 140.5MB. Free memory was 65.5MB in the beginning and 97.9MB in the end (delta: -32.4MB). Peak memory consumption was 8.7MB. Max. memory is 16.1GB. * Boogie Preprocessor took 76.66ms. Allocated memory is still 140.5MB. Free memory was 97.9MB in the beginning and 94.4MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1010.33ms. Allocated memory was 140.5MB in the beginning and 201.3MB in the end (delta: 60.8MB). Free memory was 94.4MB in the beginning and 152.2MB in the end (delta: -57.8MB). Peak memory consumption was 41.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.addAll(ImmutableSet.java:313) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-23 17:38:49,460 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2fd17e2-da33-4666-80ea-e6fea56af07d/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2fd17e2-da33-4666-80ea-e6fea56af07d/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2fd17e2-da33-4666-80ea-e6fea56af07d/bin/utaipan-fb15Y9Yzbl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2fd17e2-da33-4666-80ea-e6fea56af07d/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2fd17e2-da33-4666-80ea-e6fea56af07d/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2fd17e2-da33-4666-80ea-e6fea56af07d/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2fd17e2-da33-4666-80ea-e6fea56af07d/bin/utaipan-fb15Y9Yzbl --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash e6fe8c59d377aa736bd14f3fafaa24b496bb4607101882bb7ce5966b11428bcb --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 17:38:51,914 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 17:38:51,916 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 17:38:51,947 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 17:38:51,947 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 17:38:51,951 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 17:38:51,957 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 17:38:51,962 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 17:38:51,965 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 17:38:51,972 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 17:38:51,974 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 17:38:51,975 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 17:38:51,976 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 17:38:51,978 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 17:38:51,980 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 17:38:51,983 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 17:38:51,984 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 17:38:51,985 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 17:38:51,989 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 17:38:51,997 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 17:38:51,999 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 17:38:52,000 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 17:38:52,003 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 17:38:52,005 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 17:38:52,014 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 17:38:52,014 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 17:38:52,014 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 17:38:52,017 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 17:38:52,017 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 17:38:52,018 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 17:38:52,019 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 17:38:52,020 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 17:38:52,022 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 17:38:52,023 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 17:38:52,041 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 17:38:52,041 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 17:38:52,042 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 17:38:52,043 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 17:38:52,043 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 17:38:52,044 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 17:38:52,044 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 17:38:52,045 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2fd17e2-da33-4666-80ea-e6fea56af07d/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-23 17:38:52,071 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 17:38:52,071 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 17:38:52,072 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 17:38:52,072 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 17:38:52,073 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 17:38:52,073 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 17:38:52,073 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 17:38:52,073 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 17:38:52,073 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 17:38:52,074 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 17:38:52,074 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 17:38:52,074 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 17:38:52,075 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 17:38:52,075 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 17:38:52,075 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 17:38:52,076 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 17:38:52,076 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 17:38:52,076 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 17:38:52,076 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 17:38:52,076 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 17:38:52,077 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 17:38:52,077 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 17:38:52,077 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 17:38:52,077 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 17:38:52,078 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 17:38:52,078 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 17:38:52,078 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:38:52,078 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 17:38:52,078 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 17:38:52,079 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 17:38:52,079 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 17:38:52,079 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 17:38:52,079 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 17:38:52,080 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 17:38:52,080 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 17:38:52,080 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2fd17e2-da33-4666-80ea-e6fea56af07d/bin/utaipan-fb15Y9Yzbl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2fd17e2-da33-4666-80ea-e6fea56af07d/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e6fe8c59d377aa736bd14f3fafaa24b496bb4607101882bb7ce5966b11428bcb [2021-11-23 17:38:52,474 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 17:38:52,497 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 17:38:52,500 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 17:38:52,501 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 17:38:52,502 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 17:38:52,504 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2fd17e2-da33-4666-80ea-e6fea56af07d/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/ldv-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i [2021-11-23 17:38:52,576 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2fd17e2-da33-4666-80ea-e6fea56af07d/bin/utaipan-fb15Y9Yzbl/data/603862db0/1da25654dfda4942a47324bd49deef29/FLAG7eb035530 [2021-11-23 17:38:53,525 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 17:38:53,529 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2fd17e2-da33-4666-80ea-e6fea56af07d/sv-benchmarks/c/ldv-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i [2021-11-23 17:38:53,582 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2fd17e2-da33-4666-80ea-e6fea56af07d/bin/utaipan-fb15Y9Yzbl/data/603862db0/1da25654dfda4942a47324bd49deef29/FLAG7eb035530 [2021-11-23 17:38:54,033 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2fd17e2-da33-4666-80ea-e6fea56af07d/bin/utaipan-fb15Y9Yzbl/data/603862db0/1da25654dfda4942a47324bd49deef29 [2021-11-23 17:38:54,036 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 17:38:54,037 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 17:38:54,039 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 17:38:54,039 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 17:38:54,044 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 17:38:54,045 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:38:54" (1/1) ... [2021-11-23 17:38:54,046 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3adb17dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:38:54, skipping insertion in model container [2021-11-23 17:38:54,047 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:38:54" (1/1) ... [2021-11-23 17:38:54,055 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 17:38:54,162 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:38:55,011 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_c2fd17e2-da33-4666-80ea-e6fea56af07d/sv-benchmarks/c/ldv-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i[122264,122277] [2021-11-23 17:38:55,038 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:38:55,053 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-23 17:38:55,075 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:38:55,211 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_c2fd17e2-da33-4666-80ea-e6fea56af07d/sv-benchmarks/c/ldv-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i[122264,122277] [2021-11-23 17:38:55,221 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:38:55,227 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 17:38:55,565 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_c2fd17e2-da33-4666-80ea-e6fea56af07d/sv-benchmarks/c/ldv-commit-tester/m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i[122264,122277] [2021-11-23 17:38:55,585 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:38:55,643 INFO L208 MainTranslator]: Completed translation [2021-11-23 17:38:55,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:38:55 WrapperNode [2021-11-23 17:38:55,644 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 17:38:55,645 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 17:38:55,646 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 17:38:55,646 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 17:38:55,652 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:38:55" (1/1) ... [2021-11-23 17:38:55,718 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:38:55" (1/1) ... [2021-11-23 17:38:55,765 INFO L137 Inliner]: procedures = 150, calls = 514, calls flagged for inlining = 91, calls inlined = 29, statements flattened = 458 [2021-11-23 17:38:55,766 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 17:38:55,766 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 17:38:55,767 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 17:38:55,767 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 17:38:55,775 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:38:55" (1/1) ... [2021-11-23 17:38:55,775 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:38:55" (1/1) ... [2021-11-23 17:38:55,781 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:38:55" (1/1) ... [2021-11-23 17:38:55,781 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:38:55" (1/1) ... [2021-11-23 17:38:55,805 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:38:55" (1/1) ... [2021-11-23 17:38:55,808 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:38:55" (1/1) ... [2021-11-23 17:38:55,826 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:38:55" (1/1) ... [2021-11-23 17:38:55,833 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 17:38:55,839 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 17:38:55,849 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 17:38:55,849 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 17:38:55,850 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:38:55" (1/1) ... [2021-11-23 17:38:55,857 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:38:55,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2fd17e2-da33-4666-80ea-e6fea56af07d/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:38:55,887 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2fd17e2-da33-4666-80ea-e6fea56af07d/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 17:38:55,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2fd17e2-da33-4666-80ea-e6fea56af07d/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 17:38:55,939 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-23 17:38:55,941 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-23 17:38:55,941 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_config_buf [2021-11-23 17:38:55,941 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_config_buf [2021-11-23 17:38:55,941 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-23 17:38:55,941 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~C_UINT~X~$Pointer$~X~C_UINT~TO~VOID [2021-11-23 17:38:55,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~C_UINT~X~$Pointer$~X~C_UINT~TO~VOID [2021-11-23 17:38:55,942 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-23 17:38:55,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-23 17:38:55,942 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-23 17:38:55,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-23 17:38:55,942 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-23 17:38:55,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-23 17:38:55,943 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 17:38:55,943 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 17:38:55,944 INFO L130 BoogieDeclarations]: Found specification of procedure virtio_has_feature [2021-11-23 17:38:55,944 INFO L138 BoogieDeclarations]: Found implementation of procedure virtio_has_feature [2021-11-23 17:38:55,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 17:38:55,944 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 17:38:55,944 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-11-23 17:38:55,944 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-11-23 17:38:55,945 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-23 17:38:55,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-23 17:38:55,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-23 17:38:55,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-23 17:38:55,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 17:38:55,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-23 17:38:55,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 17:38:55,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 17:38:55,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-23 17:38:55,946 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2021-11-23 17:38:55,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2021-11-23 17:38:55,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 17:38:55,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 17:38:55,947 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-23 17:38:55,947 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-23 17:38:56,229 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 17:38:56,231 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 17:38:56,941 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 17:38:56,949 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 17:38:56,949 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 17:38:56,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:38:56 BoogieIcfgContainer [2021-11-23 17:38:56,951 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 17:38:56,953 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 17:38:56,953 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 17:38:56,956 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 17:38:56,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 05:38:54" (1/3) ... [2021-11-23 17:38:56,957 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76fdf88a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:38:56, skipping insertion in model container [2021-11-23 17:38:56,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:38:55" (2/3) ... [2021-11-23 17:38:56,957 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76fdf88a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:38:56, skipping insertion in model container [2021-11-23 17:38:56,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:38:56" (3/3) ... [2021-11-23 17:38:56,958 INFO L111 eAbstractionObserver]: Analyzing ICFG m0_drivers-block-virtio_blk-ko--101_1a--39a1d13-1.i [2021-11-23 17:38:56,964 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 17:38:56,964 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 17:38:57,011 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 17:38:57,018 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=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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 [2021-11-23 17:38:57,018 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 17:38:57,037 INFO L276 IsEmpty]: Start isEmpty. Operand has 129 states, 98 states have (on average 1.2551020408163265) internal successors, (123), 101 states have internal predecessors, (123), 19 states have call successors, (19), 10 states have call predecessors, (19), 10 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2021-11-23 17:38:57,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-23 17:38:57,042 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:38:57,043 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:38:57,043 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 17:38:57,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:38:57,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1549604235, now seen corresponding path program 1 times [2021-11-23 17:38:57,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:38:57,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [852714430] [2021-11-23 17:38:57,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:38:57,063 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:38:57,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2fd17e2-da33-4666-80ea-e6fea56af07d/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:38:57,066 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2fd17e2-da33-4666-80ea-e6fea56af07d/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:38:57,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2fd17e2-da33-4666-80ea-e6fea56af07d/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 17:38:57,201 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2fd17e2-da33-4666-80ea-e6fea56af07d/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 17:38:57,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2fd17e2-da33-4666-80ea-e6fea56af07d/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:38:57,379 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.removeSuperfluousVars(UnmodifiableTransFormula.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:273) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.constructGlobalVarsAssignment(OldVarsAssignmentCache.java:155) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.getGlobalVarsAssignment(OldVarsAssignmentCache.java:93) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:89) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:1) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedFormulas.getGlobalVarAssignment(NestedFormulas.java:126) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckUtils.decoupleArrayValues(TraceCheckUtils.java:384) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:87) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:132) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-23 17:38:57,384 INFO L158 Benchmark]: Toolchain (without parser) took 3345.43ms. Allocated memory was 81.8MB in the beginning and 121.6MB in the end (delta: 39.8MB). Free memory was 62.6MB in the beginning and 55.7MB in the end (delta: 6.8MB). Peak memory consumption was 50.2MB. Max. memory is 16.1GB. [2021-11-23 17:38:57,385 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 81.8MB. Free memory was 62.5MB in the beginning and 62.5MB in the end (delta: 72.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:38:57,386 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1605.74ms. Allocated memory was 81.8MB in the beginning and 121.6MB in the end (delta: 39.8MB). Free memory was 62.3MB in the beginning and 78.9MB in the end (delta: -16.6MB). Peak memory consumption was 53.1MB. Max. memory is 16.1GB. [2021-11-23 17:38:57,386 INFO L158 Benchmark]: Boogie Procedure Inliner took 120.46ms. Allocated memory is still 121.6MB. Free memory was 78.9MB in the beginning and 74.0MB in the end (delta: 4.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 17:38:57,387 INFO L158 Benchmark]: Boogie Preprocessor took 71.74ms. Allocated memory is still 121.6MB. Free memory was 74.0MB in the beginning and 69.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 17:38:57,388 INFO L158 Benchmark]: RCFGBuilder took 1112.51ms. Allocated memory is still 121.6MB. Free memory was 69.8MB in the beginning and 68.5MB in the end (delta: 1.3MB). Peak memory consumption was 26.5MB. Max. memory is 16.1GB. [2021-11-23 17:38:57,388 INFO L158 Benchmark]: TraceAbstraction took 429.03ms. Allocated memory is still 121.6MB. Free memory was 67.8MB in the beginning and 55.7MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-23 17:38:57,392 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 81.8MB. Free memory was 62.5MB in the beginning and 62.5MB in the end (delta: 72.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1605.74ms. Allocated memory was 81.8MB in the beginning and 121.6MB in the end (delta: 39.8MB). Free memory was 62.3MB in the beginning and 78.9MB in the end (delta: -16.6MB). Peak memory consumption was 53.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 120.46ms. Allocated memory is still 121.6MB. Free memory was 78.9MB in the beginning and 74.0MB in the end (delta: 4.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 71.74ms. Allocated memory is still 121.6MB. Free memory was 74.0MB in the beginning and 69.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1112.51ms. Allocated memory is still 121.6MB. Free memory was 69.8MB in the beginning and 68.5MB in the end (delta: 1.3MB). Peak memory consumption was 26.5MB. Max. memory is 16.1GB. * TraceAbstraction took 429.03ms. Allocated memory is still 121.6MB. Free memory was 67.8MB in the beginning and 55.7MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-23 17:38:57,437 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2fd17e2-da33-4666-80ea-e6fea56af07d/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable