./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound50.c --full-output --architecture 32bit -------------------------------------------------------------------------------- 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_2596c638-63e6-4e19-baf5-9c0ac08a5418/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2596c638-63e6-4e19-baf5-9c0ac08a5418/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_2596c638-63e6-4e19-baf5-9c0ac08a5418/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2596c638-63e6-4e19-baf5-9c0ac08a5418/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound50.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2596c638-63e6-4e19-baf5-9c0ac08a5418/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2596c638-63e6-4e19-baf5-9c0ac08a5418/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 32bit --witnessprinter.graph.data.programhash deef9b1f63fa90bdeace0bbb769d25578ef53bda95c70ad5e444555427b2b0e2 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 17:39:57,454 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 17:39:57,456 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 17:39:57,495 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 17:39:57,496 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 17:39:57,498 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 17:39:57,500 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 17:39:57,503 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 17:39:57,506 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 17:39:57,508 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 17:39:57,510 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 17:39:57,512 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 17:39:57,512 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 17:39:57,514 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 17:39:57,517 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 17:39:57,519 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 17:39:57,521 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 17:39:57,523 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 17:39:57,527 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 17:39:57,530 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 17:39:57,533 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 17:39:57,538 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 17:39:57,543 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 17:39:57,546 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 17:39:57,551 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 17:39:57,560 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 17:39:57,560 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 17:39:57,562 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 17:39:57,563 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 17:39:57,566 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 17:39:57,567 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 17:39:57,569 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 17:39:57,571 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 17:39:57,572 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 17:39:57,574 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 17:39:57,575 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 17:39:57,577 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 17:39:57,578 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 17:39:57,578 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 17:39:57,579 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 17:39:57,580 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 17:39:57,581 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2596c638-63e6-4e19-baf5-9c0ac08a5418/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 17:39:57,632 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 17:39:57,632 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 17:39:57,633 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 17:39:57,633 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 17:39:57,634 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 17:39:57,634 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 17:39:57,634 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 17:39:57,635 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 17:39:57,635 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 17:39:57,635 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 17:39:57,636 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 17:39:57,636 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 17:39:57,636 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 17:39:57,636 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 17:39:57,637 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 17:39:57,637 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 17:39:57,637 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 17:39:57,638 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 17:39:57,639 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 17:39:57,639 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 17:39:57,639 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 17:39:57,640 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 17:39:57,640 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 17:39:57,640 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 17:39:57,640 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 17:39:57,641 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 17:39:57,641 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 17:39:57,641 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 17:39:57,641 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 17:39:57,642 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 17:39:57,642 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 17:39:57,642 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 17:39:57,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:39:57,643 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 17:39:57,643 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 17:39:57,644 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 17:39:57,644 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 17:39:57,644 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 17:39:57,644 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 17:39:57,645 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 17:39:57,645 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 17:39:57,645 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_2596c638-63e6-4e19-baf5-9c0ac08a5418/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2596c638-63e6-4e19-baf5-9c0ac08a5418/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> deef9b1f63fa90bdeace0bbb769d25578ef53bda95c70ad5e444555427b2b0e2 [2021-11-23 17:39:58,020 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 17:39:58,057 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 17:39:58,060 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 17:39:58,062 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 17:39:58,063 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 17:39:58,064 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2596c638-63e6-4e19-baf5-9c0ac08a5418/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound50.c [2021-11-23 17:39:58,160 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2596c638-63e6-4e19-baf5-9c0ac08a5418/bin/utaipan-fb15Y9Yzbl/data/7b1479c40/c5f7b43262c14b10b57a3f52d802caf3/FLAG4bd3c97e2 [2021-11-23 17:39:58,819 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 17:39:58,824 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2596c638-63e6-4e19-baf5-9c0ac08a5418/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound50.c [2021-11-23 17:39:58,839 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2596c638-63e6-4e19-baf5-9c0ac08a5418/bin/utaipan-fb15Y9Yzbl/data/7b1479c40/c5f7b43262c14b10b57a3f52d802caf3/FLAG4bd3c97e2 [2021-11-23 17:39:59,131 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2596c638-63e6-4e19-baf5-9c0ac08a5418/bin/utaipan-fb15Y9Yzbl/data/7b1479c40/c5f7b43262c14b10b57a3f52d802caf3 [2021-11-23 17:39:59,134 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 17:39:59,136 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 17:39:59,141 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 17:39:59,142 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 17:39:59,146 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 17:39:59,147 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:39:59" (1/1) ... [2021-11-23 17:39:59,150 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b6ae95b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:39:59, skipping insertion in model container [2021-11-23 17:39:59,150 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:39:59" (1/1) ... [2021-11-23 17:39:59,160 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 17:39:59,184 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:39:59,378 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_2596c638-63e6-4e19-baf5-9c0ac08a5418/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound50.c[490,503] [2021-11-23 17:39:59,429 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:39:59,443 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 17:39:59,463 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_2596c638-63e6-4e19-baf5-9c0ac08a5418/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound50.c[490,503] [2021-11-23 17:39:59,500 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:39:59,523 INFO L208 MainTranslator]: Completed translation [2021-11-23 17:39:59,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:39:59 WrapperNode [2021-11-23 17:39:59,525 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 17:39:59,527 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 17:39:59,527 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 17:39:59,527 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 17:39:59,537 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:39:59" (1/1) ... [2021-11-23 17:39:59,559 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:39:59" (1/1) ... [2021-11-23 17:39:59,584 INFO L137 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 84 [2021-11-23 17:39:59,585 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 17:39:59,586 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 17:39:59,586 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 17:39:59,586 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 17:39:59,596 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:39:59" (1/1) ... [2021-11-23 17:39:59,597 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:39:59" (1/1) ... [2021-11-23 17:39:59,599 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:39:59" (1/1) ... [2021-11-23 17:39:59,599 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:39:59" (1/1) ... [2021-11-23 17:39:59,604 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:39:59" (1/1) ... [2021-11-23 17:39:59,609 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:39:59" (1/1) ... [2021-11-23 17:39:59,611 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:39:59" (1/1) ... [2021-11-23 17:39:59,613 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 17:39:59,614 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 17:39:59,615 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 17:39:59,615 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 17:39:59,622 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:39:59" (1/1) ... [2021-11-23 17:39:59,631 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:39:59,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2596c638-63e6-4e19-baf5-9c0ac08a5418/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:39:59,666 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2596c638-63e6-4e19-baf5-9c0ac08a5418/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 17:39:59,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2596c638-63e6-4e19-baf5-9c0ac08a5418/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 17:39:59,729 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 17:39:59,730 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-23 17:39:59,730 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-23 17:39:59,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 17:39:59,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 17:39:59,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 17:39:59,732 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-23 17:39:59,732 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-23 17:39:59,818 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 17:39:59,820 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 17:40:00,066 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 17:40:00,103 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 17:40:00,109 INFO L158 Benchmark]: Toolchain (without parser) took 970.87ms. Allocated memory is still 111.1MB. Free memory was 75.2MB in the beginning and 70.7MB in the end (delta: 4.4MB). Peak memory consumption was 1.3MB. Max. memory is 16.1GB. [2021-11-23 17:40:00,111 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 111.1MB. Free memory was 84.2MB in the beginning and 84.1MB in the end (delta: 28.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:40:00,115 INFO L158 Benchmark]: CACSL2BoogieTranslator took 384.61ms. Allocated memory is still 111.1MB. Free memory was 75.0MB in the beginning and 85.4MB in the end (delta: -10.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 17:40:00,117 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.28ms. Allocated memory is still 111.1MB. Free memory was 85.4MB in the beginning and 83.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 17:40:00,119 INFO L158 Benchmark]: Boogie Preprocessor took 27.87ms. Allocated memory is still 111.1MB. Free memory was 83.7MB in the beginning and 82.8MB in the end (delta: 952.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 17:40:00,120 INFO L158 Benchmark]: RCFGBuilder took 491.06ms. Allocated memory is still 111.1MB. Free memory was 82.3MB in the beginning and 70.7MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 17:40:00,132 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 111.1MB. Free memory was 84.2MB in the beginning and 84.1MB in the end (delta: 28.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 384.61ms. Allocated memory is still 111.1MB. Free memory was 75.0MB in the beginning and 85.4MB in the end (delta: -10.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 58.28ms. Allocated memory is still 111.1MB. Free memory was 85.4MB in the beginning and 83.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.87ms. Allocated memory is still 111.1MB. Free memory was 83.7MB in the beginning and 82.8MB in the end (delta: 952.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 491.06ms. Allocated memory is still 111.1MB. Free memory was 82.3MB in the beginning and 70.7MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. 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 17:40:00,205 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2596c638-63e6-4e19-baf5-9c0ac08a5418/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 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_2596c638-63e6-4e19-baf5-9c0ac08a5418/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2596c638-63e6-4e19-baf5-9c0ac08a5418/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_2596c638-63e6-4e19-baf5-9c0ac08a5418/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2596c638-63e6-4e19-baf5-9c0ac08a5418/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound50.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2596c638-63e6-4e19-baf5-9c0ac08a5418/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2596c638-63e6-4e19-baf5-9c0ac08a5418/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 32bit --witnessprinter.graph.data.programhash deef9b1f63fa90bdeace0bbb769d25578ef53bda95c70ad5e444555427b2b0e2 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 17:40:03,139 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 17:40:03,143 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 17:40:03,215 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 17:40:03,216 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 17:40:03,221 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 17:40:03,224 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 17:40:03,229 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 17:40:03,233 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 17:40:03,243 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 17:40:03,245 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 17:40:03,247 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 17:40:03,248 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 17:40:03,251 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 17:40:03,254 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 17:40:03,260 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 17:40:03,262 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 17:40:03,264 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 17:40:03,267 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 17:40:03,279 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 17:40:03,281 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 17:40:03,283 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 17:40:03,288 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 17:40:03,290 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 17:40:03,302 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 17:40:03,306 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 17:40:03,307 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 17:40:03,308 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 17:40:03,308 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 17:40:03,310 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 17:40:03,310 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 17:40:03,312 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 17:40:03,313 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 17:40:03,314 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 17:40:03,315 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 17:40:03,315 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 17:40:03,316 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 17:40:03,317 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 17:40:03,317 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 17:40:03,318 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 17:40:03,319 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 17:40:03,320 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2596c638-63e6-4e19-baf5-9c0ac08a5418/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-23 17:40:03,363 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 17:40:03,363 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 17:40:03,364 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 17:40:03,364 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 17:40:03,365 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 17:40:03,366 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 17:40:03,366 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 17:40:03,366 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 17:40:03,366 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 17:40:03,367 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 17:40:03,368 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 17:40:03,368 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 17:40:03,370 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 17:40:03,370 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 17:40:03,370 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 17:40:03,371 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 17:40:03,371 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 17:40:03,371 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 17:40:03,371 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 17:40:03,372 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 17:40:03,372 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 17:40:03,372 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 17:40:03,372 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 17:40:03,372 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 17:40:03,373 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 17:40:03,373 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 17:40:03,373 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 17:40:03,373 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 17:40:03,374 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 17:40:03,374 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:40:03,374 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 17:40:03,374 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 17:40:03,375 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 17:40:03,375 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 17:40:03,376 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 17:40:03,376 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 17:40:03,376 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 17:40:03,376 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 17:40:03,377 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_2596c638-63e6-4e19-baf5-9c0ac08a5418/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2596c638-63e6-4e19-baf5-9c0ac08a5418/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> deef9b1f63fa90bdeace0bbb769d25578ef53bda95c70ad5e444555427b2b0e2 [2021-11-23 17:40:03,965 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 17:40:04,007 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 17:40:04,011 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 17:40:04,012 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 17:40:04,013 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 17:40:04,016 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2596c638-63e6-4e19-baf5-9c0ac08a5418/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound50.c [2021-11-23 17:40:04,106 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2596c638-63e6-4e19-baf5-9c0ac08a5418/bin/utaipan-fb15Y9Yzbl/data/36ac770af/215d97de48964390aaee1b57eb7472d0/FLAGf9c7649b2 [2021-11-23 17:40:04,828 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 17:40:04,833 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2596c638-63e6-4e19-baf5-9c0ac08a5418/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound50.c [2021-11-23 17:40:04,844 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2596c638-63e6-4e19-baf5-9c0ac08a5418/bin/utaipan-fb15Y9Yzbl/data/36ac770af/215d97de48964390aaee1b57eb7472d0/FLAGf9c7649b2 [2021-11-23 17:40:05,143 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2596c638-63e6-4e19-baf5-9c0ac08a5418/bin/utaipan-fb15Y9Yzbl/data/36ac770af/215d97de48964390aaee1b57eb7472d0 [2021-11-23 17:40:05,146 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 17:40:05,148 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 17:40:05,149 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 17:40:05,149 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 17:40:05,154 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 17:40:05,154 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:40:05" (1/1) ... [2021-11-23 17:40:05,156 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@215b11aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:40:05, skipping insertion in model container [2021-11-23 17:40:05,156 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:40:05" (1/1) ... [2021-11-23 17:40:05,164 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 17:40:05,181 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:40:05,338 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_2596c638-63e6-4e19-baf5-9c0ac08a5418/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound50.c[490,503] [2021-11-23 17:40:05,370 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:40:05,384 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 17:40:05,399 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_2596c638-63e6-4e19-baf5-9c0ac08a5418/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound50.c[490,503] [2021-11-23 17:40:05,416 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:40:05,442 INFO L208 MainTranslator]: Completed translation [2021-11-23 17:40:05,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:40:05 WrapperNode [2021-11-23 17:40:05,443 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 17:40:05,445 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 17:40:05,445 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 17:40:05,445 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 17:40:05,453 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:40:05" (1/1) ... [2021-11-23 17:40:05,462 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:40:05" (1/1) ... [2021-11-23 17:40:05,522 INFO L137 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 82 [2021-11-23 17:40:05,523 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 17:40:05,525 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 17:40:05,525 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 17:40:05,526 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 17:40:05,537 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:40:05" (1/1) ... [2021-11-23 17:40:05,537 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:40:05" (1/1) ... [2021-11-23 17:40:05,555 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:40:05" (1/1) ... [2021-11-23 17:40:05,555 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:40:05" (1/1) ... [2021-11-23 17:40:05,562 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:40:05" (1/1) ... [2021-11-23 17:40:05,566 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:40:05" (1/1) ... [2021-11-23 17:40:05,568 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:40:05" (1/1) ... [2021-11-23 17:40:05,571 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 17:40:05,572 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 17:40:05,573 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 17:40:05,573 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 17:40:05,574 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:40:05" (1/1) ... [2021-11-23 17:40:05,586 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:40:05,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2596c638-63e6-4e19-baf5-9c0ac08a5418/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:40:05,624 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2596c638-63e6-4e19-baf5-9c0ac08a5418/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 17:40:05,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2596c638-63e6-4e19-baf5-9c0ac08a5418/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 17:40:05,688 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 17:40:05,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 17:40:05,690 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-23 17:40:05,691 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-23 17:40:05,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 17:40:05,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 17:40:05,691 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-23 17:40:05,691 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-23 17:40:05,772 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 17:40:05,774 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 17:40:06,629 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 17:40:06,637 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 17:40:06,641 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-23 17:40:06,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:40:06 BoogieIcfgContainer [2021-11-23 17:40:06,644 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 17:40:06,647 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 17:40:06,648 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 17:40:06,651 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 17:40:06,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 05:40:05" (1/3) ... [2021-11-23 17:40:06,653 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ca1ad1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:40:06, skipping insertion in model container [2021-11-23 17:40:06,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:40:05" (2/3) ... [2021-11-23 17:40:06,654 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ca1ad1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:40:06, skipping insertion in model container [2021-11-23 17:40:06,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:40:06" (3/3) ... [2021-11-23 17:40:06,657 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd2-ll_unwindbound50.c [2021-11-23 17:40:06,664 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 17:40:06,664 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 17:40:06,747 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 17:40:06,760 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 17:40:06,760 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 17:40:06,846 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 20 states have (on average 1.45) internal successors, (29), 22 states have internal predecessors, (29), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-23 17:40:06,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-23 17:40:06,871 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:40:06,872 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:40:06,872 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 17:40:06,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:40:06,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1022199732, now seen corresponding path program 1 times [2021-11-23 17:40:06,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:40:06,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [488096733] [2021-11-23 17:40:06,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:40:06,899 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:40:06,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2596c638-63e6-4e19-baf5-9c0ac08a5418/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:40:06,913 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2596c638-63e6-4e19-baf5-9c0ac08a5418/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:40:06,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2596c638-63e6-4e19-baf5-9c0ac08a5418/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 17:40:06,963 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2596c638-63e6-4e19-baf5-9c0ac08a5418/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-23 17:40:07,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2596c638-63e6-4e19-baf5-9c0ac08a5418/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:40:07,155 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 17:40:07,160 INFO L158 Benchmark]: Toolchain (without parser) took 2010.88ms. Allocated memory was 62.9MB in the beginning and 92.3MB in the end (delta: 29.4MB). Free memory was 43.6MB in the beginning and 71.1MB in the end (delta: -27.5MB). Peak memory consumption was 2.7MB. Max. memory is 16.1GB. [2021-11-23 17:40:07,160 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 62.9MB. Free memory was 44.8MB in the beginning and 44.8MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:40:07,161 INFO L158 Benchmark]: CACSL2BoogieTranslator took 294.46ms. Allocated memory is still 62.9MB. Free memory was 43.4MB in the beginning and 47.1MB in the end (delta: -3.7MB). Peak memory consumption was 13.8MB. Max. memory is 16.1GB. [2021-11-23 17:40:07,162 INFO L158 Benchmark]: Boogie Procedure Inliner took 78.48ms. Allocated memory is still 62.9MB. Free memory was 47.1MB in the beginning and 45.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 17:40:07,163 INFO L158 Benchmark]: Boogie Preprocessor took 46.98ms. Allocated memory is still 62.9MB. Free memory was 45.3MB in the beginning and 44.2MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:40:07,164 INFO L158 Benchmark]: RCFGBuilder took 1072.03ms. Allocated memory is still 62.9MB. Free memory was 44.2MB in the beginning and 33.5MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 17:40:07,165 INFO L158 Benchmark]: TraceAbstraction took 510.27ms. Allocated memory was 62.9MB in the beginning and 92.3MB in the end (delta: 29.4MB). Free memory was 33.0MB in the beginning and 71.1MB in the end (delta: -38.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:40:07,184 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 62.9MB. Free memory was 44.8MB in the beginning and 44.8MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 294.46ms. Allocated memory is still 62.9MB. Free memory was 43.4MB in the beginning and 47.1MB in the end (delta: -3.7MB). Peak memory consumption was 13.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 78.48ms. Allocated memory is still 62.9MB. Free memory was 47.1MB in the beginning and 45.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.98ms. Allocated memory is still 62.9MB. Free memory was 45.3MB in the beginning and 44.2MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 1072.03ms. Allocated memory is still 62.9MB. Free memory was 44.2MB in the beginning and 33.5MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 510.27ms. Allocated memory was 62.9MB in the beginning and 92.3MB in the end (delta: 29.4MB). Free memory was 33.0MB in the beginning and 71.1MB in the end (delta: -38.1MB). There was no memory consumed. 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 17:40:07,234 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2596c638-63e6-4e19-baf5-9c0ac08a5418/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