./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/divbin_unwindbound2.i --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_5641d3eb-a02a-479b-a588-8203856e8c1e/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5641d3eb-a02a-479b-a588-8203856e8c1e/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_5641d3eb-a02a-479b-a588-8203856e8c1e/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5641d3eb-a02a-479b-a588-8203856e8c1e/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/divbin_unwindbound2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5641d3eb-a02a-479b-a588-8203856e8c1e/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_5641d3eb-a02a-479b-a588-8203856e8c1e/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 ab65f956ab163b80526b0084797effd91e1aac547effeb9a1fdab821fa279e8e --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 17:16:44,412 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 17:16:44,415 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 17:16:44,484 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 17:16:44,485 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 17:16:44,489 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 17:16:44,492 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 17:16:44,496 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 17:16:44,500 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 17:16:44,507 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 17:16:44,508 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 17:16:44,511 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 17:16:44,512 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 17:16:44,516 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 17:16:44,517 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 17:16:44,519 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 17:16:44,520 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 17:16:44,522 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 17:16:44,525 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 17:16:44,530 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 17:16:44,539 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 17:16:44,541 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 17:16:44,543 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 17:16:44,546 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 17:16:44,555 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 17:16:44,558 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 17:16:44,558 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 17:16:44,560 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 17:16:44,562 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 17:16:44,563 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 17:16:44,564 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 17:16:44,566 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 17:16:44,568 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 17:16:44,570 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 17:16:44,572 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 17:16:44,572 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 17:16:44,573 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 17:16:44,573 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 17:16:44,574 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 17:16:44,575 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 17:16:44,576 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 17:16:44,577 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5641d3eb-a02a-479b-a588-8203856e8c1e/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 17:16:44,626 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 17:16:44,626 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 17:16:44,627 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 17:16:44,628 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 17:16:44,635 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 17:16:44,636 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 17:16:44,636 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 17:16:44,637 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 17:16:44,637 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 17:16:44,637 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 17:16:44,638 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 17:16:44,639 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 17:16:44,639 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 17:16:44,639 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 17:16:44,639 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 17:16:44,640 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 17:16:44,640 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 17:16:44,640 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 17:16:44,641 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 17:16:44,641 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 17:16:44,642 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 17:16:44,642 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 17:16:44,642 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 17:16:44,643 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 17:16:44,643 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 17:16:44,643 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 17:16:44,643 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 17:16:44,644 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 17:16:44,644 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 17:16:44,644 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 17:16:44,645 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 17:16:44,645 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 17:16:44,645 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:16:44,646 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 17:16:44,646 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 17:16:44,646 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 17:16:44,646 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 17:16:44,647 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 17:16:44,647 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 17:16:44,647 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 17:16:44,648 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 17:16:44,648 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_5641d3eb-a02a-479b-a588-8203856e8c1e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5641d3eb-a02a-479b-a588-8203856e8c1e/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ab65f956ab163b80526b0084797effd91e1aac547effeb9a1fdab821fa279e8e [2021-11-23 17:16:44,956 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 17:16:44,984 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 17:16:44,988 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 17:16:44,989 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 17:16:44,990 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 17:16:44,991 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5641d3eb-a02a-479b-a588-8203856e8c1e/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/nla-digbench-scaling/divbin_unwindbound2.i [2021-11-23 17:16:45,089 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5641d3eb-a02a-479b-a588-8203856e8c1e/bin/utaipan-fb15Y9Yzbl/data/8acbedb1a/f5949b3b2b5e4b35af3e7913a297de58/FLAG1f49b9b33 [2021-11-23 17:16:45,690 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 17:16:45,695 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5641d3eb-a02a-479b-a588-8203856e8c1e/sv-benchmarks/c/nla-digbench-scaling/divbin_unwindbound2.i [2021-11-23 17:16:45,708 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5641d3eb-a02a-479b-a588-8203856e8c1e/bin/utaipan-fb15Y9Yzbl/data/8acbedb1a/f5949b3b2b5e4b35af3e7913a297de58/FLAG1f49b9b33 [2021-11-23 17:16:46,042 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5641d3eb-a02a-479b-a588-8203856e8c1e/bin/utaipan-fb15Y9Yzbl/data/8acbedb1a/f5949b3b2b5e4b35af3e7913a297de58 [2021-11-23 17:16:46,044 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 17:16:46,046 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 17:16:46,048 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 17:16:46,049 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 17:16:46,053 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 17:16:46,054 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:16:46" (1/1) ... [2021-11-23 17:16:46,055 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22511246 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:16:46, skipping insertion in model container [2021-11-23 17:16:46,055 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:16:46" (1/1) ... [2021-11-23 17:16:46,063 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 17:16:46,079 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:16:46,271 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_5641d3eb-a02a-479b-a588-8203856e8c1e/sv-benchmarks/c/nla-digbench-scaling/divbin_unwindbound2.i[950,963] [2021-11-23 17:16:46,294 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:16:46,305 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 17:16:46,324 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_5641d3eb-a02a-479b-a588-8203856e8c1e/sv-benchmarks/c/nla-digbench-scaling/divbin_unwindbound2.i[950,963] [2021-11-23 17:16:46,331 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:16:46,344 INFO L208 MainTranslator]: Completed translation [2021-11-23 17:16:46,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:16:46 WrapperNode [2021-11-23 17:16:46,345 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 17:16:46,345 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 17:16:46,346 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 17:16:46,346 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 17:16:46,352 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:16:46" (1/1) ... [2021-11-23 17:16:46,359 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:16:46" (1/1) ... [2021-11-23 17:16:46,380 INFO L137 Inliner]: procedures = 16, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 54 [2021-11-23 17:16:46,380 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 17:16:46,381 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 17:16:46,381 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 17:16:46,382 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 17:16:46,391 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:16:46" (1/1) ... [2021-11-23 17:16:46,391 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:16:46" (1/1) ... [2021-11-23 17:16:46,393 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:16:46" (1/1) ... [2021-11-23 17:16:46,393 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:16:46" (1/1) ... [2021-11-23 17:16:46,397 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:16:46" (1/1) ... [2021-11-23 17:16:46,401 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:16:46" (1/1) ... [2021-11-23 17:16:46,402 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:16:46" (1/1) ... [2021-11-23 17:16:46,404 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 17:16:46,405 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 17:16:46,405 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 17:16:46,405 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 17:16:46,406 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:16:46" (1/1) ... [2021-11-23 17:16:46,414 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:16:46,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5641d3eb-a02a-479b-a588-8203856e8c1e/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:16:46,441 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5641d3eb-a02a-479b-a588-8203856e8c1e/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 17:16:46,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5641d3eb-a02a-479b-a588-8203856e8c1e/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 17:16:46,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 17:16:46,489 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-23 17:16:46,490 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-23 17:16:46,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 17:16:46,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 17:16:46,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 17:16:46,490 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-23 17:16:46,491 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-23 17:16:46,559 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 17:16:46,561 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 17:16:46,779 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 17:16:46,809 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 17:16:46,823 INFO L158 Benchmark]: Toolchain (without parser) took 775.40ms. Allocated memory is still 96.5MB. Free memory was 64.8MB in the beginning and 58.9MB in the end (delta: 5.9MB). Peak memory consumption was 3.3MB. Max. memory is 16.1GB. [2021-11-23 17:16:46,824 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 96.5MB. Free memory was 52.4MB in the beginning and 52.3MB in the end (delta: 42.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:16:46,825 INFO L158 Benchmark]: CACSL2BoogieTranslator took 296.67ms. Allocated memory is still 96.5MB. Free memory was 64.6MB in the beginning and 71.2MB in the end (delta: -6.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 17:16:46,826 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.03ms. Allocated memory is still 96.5MB. Free memory was 71.2MB in the beginning and 69.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:16:46,827 INFO L158 Benchmark]: Boogie Preprocessor took 23.15ms. Allocated memory is still 96.5MB. Free memory was 69.8MB in the beginning and 68.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 17:16:46,828 INFO L158 Benchmark]: RCFGBuilder took 415.74ms. Allocated memory is still 96.5MB. Free memory was 68.4MB in the beginning and 59.0MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 17:16:46,833 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 96.5MB. Free memory was 52.4MB in the beginning and 52.3MB in the end (delta: 42.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 296.67ms. Allocated memory is still 96.5MB. Free memory was 64.6MB in the beginning and 71.2MB in the end (delta: -6.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.03ms. Allocated memory is still 96.5MB. Free memory was 71.2MB in the beginning and 69.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 23.15ms. Allocated memory is still 96.5MB. Free memory was 69.8MB in the beginning and 68.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 415.74ms. Allocated memory is still 96.5MB. Free memory was 68.4MB in the beginning and 59.0MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. 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 17:16:46,947 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5641d3eb-a02a-479b-a588-8203856e8c1e/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_5641d3eb-a02a-479b-a588-8203856e8c1e/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5641d3eb-a02a-479b-a588-8203856e8c1e/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_5641d3eb-a02a-479b-a588-8203856e8c1e/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5641d3eb-a02a-479b-a588-8203856e8c1e/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/divbin_unwindbound2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5641d3eb-a02a-479b-a588-8203856e8c1e/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_5641d3eb-a02a-479b-a588-8203856e8c1e/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 ab65f956ab163b80526b0084797effd91e1aac547effeb9a1fdab821fa279e8e --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 17:16:49,475 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 17:16:49,478 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 17:16:49,527 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 17:16:49,528 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 17:16:49,529 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 17:16:49,531 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 17:16:49,534 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 17:16:49,536 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 17:16:49,537 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 17:16:49,539 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 17:16:49,540 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 17:16:49,541 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 17:16:49,542 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 17:16:49,544 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 17:16:49,545 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 17:16:49,547 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 17:16:49,548 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 17:16:49,550 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 17:16:49,553 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 17:16:49,558 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 17:16:49,563 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 17:16:49,565 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 17:16:49,567 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 17:16:49,571 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 17:16:49,578 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 17:16:49,578 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 17:16:49,582 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 17:16:49,583 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 17:16:49,585 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 17:16:49,585 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 17:16:49,586 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 17:16:49,588 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 17:16:49,589 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 17:16:49,590 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 17:16:49,590 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 17:16:49,591 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 17:16:49,591 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 17:16:49,591 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 17:16:49,592 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 17:16:49,593 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 17:16:49,594 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5641d3eb-a02a-479b-a588-8203856e8c1e/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-23 17:16:49,619 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 17:16:49,620 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 17:16:49,620 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 17:16:49,620 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 17:16:49,621 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 17:16:49,621 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 17:16:49,621 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 17:16:49,622 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 17:16:49,622 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 17:16:49,622 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 17:16:49,622 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 17:16:49,622 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 17:16:49,623 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 17:16:49,623 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 17:16:49,624 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 17:16:49,624 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 17:16:49,624 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 17:16:49,624 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 17:16:49,624 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 17:16:49,624 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 17:16:49,625 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 17:16:49,625 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 17:16:49,625 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 17:16:49,625 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 17:16:49,625 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 17:16:49,625 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 17:16:49,626 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 17:16:49,626 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 17:16:49,626 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 17:16:49,626 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:16:49,627 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 17:16:49,627 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 17:16:49,627 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 17:16:49,627 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 17:16:49,627 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 17:16:49,627 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 17:16:49,628 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 17:16:49,628 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 17:16:49,628 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_5641d3eb-a02a-479b-a588-8203856e8c1e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5641d3eb-a02a-479b-a588-8203856e8c1e/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ab65f956ab163b80526b0084797effd91e1aac547effeb9a1fdab821fa279e8e [2021-11-23 17:16:50,004 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 17:16:50,033 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 17:16:50,036 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 17:16:50,037 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 17:16:50,038 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 17:16:50,040 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5641d3eb-a02a-479b-a588-8203856e8c1e/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/nla-digbench-scaling/divbin_unwindbound2.i [2021-11-23 17:16:50,106 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5641d3eb-a02a-479b-a588-8203856e8c1e/bin/utaipan-fb15Y9Yzbl/data/66b37360a/ee63a3c477dc4f9a8b1fbbcaacd61d96/FLAGfdd05cf8d [2021-11-23 17:16:50,643 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 17:16:50,644 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5641d3eb-a02a-479b-a588-8203856e8c1e/sv-benchmarks/c/nla-digbench-scaling/divbin_unwindbound2.i [2021-11-23 17:16:50,656 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5641d3eb-a02a-479b-a588-8203856e8c1e/bin/utaipan-fb15Y9Yzbl/data/66b37360a/ee63a3c477dc4f9a8b1fbbcaacd61d96/FLAGfdd05cf8d [2021-11-23 17:16:50,976 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5641d3eb-a02a-479b-a588-8203856e8c1e/bin/utaipan-fb15Y9Yzbl/data/66b37360a/ee63a3c477dc4f9a8b1fbbcaacd61d96 [2021-11-23 17:16:50,978 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 17:16:50,980 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 17:16:50,981 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 17:16:50,981 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 17:16:50,986 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 17:16:50,988 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:16:50" (1/1) ... [2021-11-23 17:16:50,990 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74e98d2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:16:50, skipping insertion in model container [2021-11-23 17:16:50,990 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:16:50" (1/1) ... [2021-11-23 17:16:50,998 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 17:16:51,020 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:16:51,169 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_5641d3eb-a02a-479b-a588-8203856e8c1e/sv-benchmarks/c/nla-digbench-scaling/divbin_unwindbound2.i[950,963] [2021-11-23 17:16:51,188 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:16:51,201 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 17:16:51,217 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_5641d3eb-a02a-479b-a588-8203856e8c1e/sv-benchmarks/c/nla-digbench-scaling/divbin_unwindbound2.i[950,963] [2021-11-23 17:16:51,226 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:16:51,242 INFO L208 MainTranslator]: Completed translation [2021-11-23 17:16:51,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:16:51 WrapperNode [2021-11-23 17:16:51,243 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 17:16:51,244 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 17:16:51,244 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 17:16:51,245 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 17:16:51,251 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:16:51" (1/1) ... [2021-11-23 17:16:51,261 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:16:51" (1/1) ... [2021-11-23 17:16:51,281 INFO L137 Inliner]: procedures = 16, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 54 [2021-11-23 17:16:51,281 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 17:16:51,282 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 17:16:51,282 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 17:16:51,282 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 17:16:51,291 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:16:51" (1/1) ... [2021-11-23 17:16:51,291 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:16:51" (1/1) ... [2021-11-23 17:16:51,294 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:16:51" (1/1) ... [2021-11-23 17:16:51,294 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:16:51" (1/1) ... [2021-11-23 17:16:51,299 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:16:51" (1/1) ... [2021-11-23 17:16:51,304 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:16:51" (1/1) ... [2021-11-23 17:16:51,305 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:16:51" (1/1) ... [2021-11-23 17:16:51,307 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 17:16:51,308 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 17:16:51,309 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 17:16:51,309 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 17:16:51,310 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:16:51" (1/1) ... [2021-11-23 17:16:51,319 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:16:51,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5641d3eb-a02a-479b-a588-8203856e8c1e/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:16:51,349 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5641d3eb-a02a-479b-a588-8203856e8c1e/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 17:16:51,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5641d3eb-a02a-479b-a588-8203856e8c1e/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 17:16:51,401 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 17:16:51,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 17:16:51,402 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-23 17:16:51,402 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-23 17:16:51,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 17:16:51,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 17:16:51,403 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-23 17:16:51,403 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-23 17:16:51,494 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 17:16:51,496 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 17:16:51,636 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 17:16:51,642 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 17:16:51,642 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-23 17:16:51,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:16:51 BoogieIcfgContainer [2021-11-23 17:16:51,644 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 17:16:51,646 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 17:16:51,646 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 17:16:51,649 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 17:16:51,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 05:16:50" (1/3) ... [2021-11-23 17:16:51,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79a29d76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:16:51, skipping insertion in model container [2021-11-23 17:16:51,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:16:51" (2/3) ... [2021-11-23 17:16:51,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79a29d76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:16:51, skipping insertion in model container [2021-11-23 17:16:51,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:16:51" (3/3) ... [2021-11-23 17:16:51,652 INFO L111 eAbstractionObserver]: Analyzing ICFG divbin_unwindbound2.i [2021-11-23 17:16:51,658 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 17:16:51,658 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 17:16:51,727 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 17:16:51,735 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 17:16:51,735 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 17:16:51,753 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-23 17:16:51,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-23 17:16:51,760 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:16:51,761 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:16:51,761 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 17:16:51,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:16:51,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1267887399, now seen corresponding path program 1 times [2021-11-23 17:16:51,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:16:51,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [821648991] [2021-11-23 17:16:51,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:16:51,782 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:16:51,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5641d3eb-a02a-479b-a588-8203856e8c1e/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:16:51,789 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5641d3eb-a02a-479b-a588-8203856e8c1e/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:16:51,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5641d3eb-a02a-479b-a588-8203856e8c1e/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 17:16:51,854 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5641d3eb-a02a-479b-a588-8203856e8c1e/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 17:16:52,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5641d3eb-a02a-479b-a588-8203856e8c1e/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:16:52,055 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 17:16:52,067 INFO L158 Benchmark]: Toolchain (without parser) took 1086.66ms. Allocated memory is still 73.4MB. Free memory was 54.3MB in the beginning and 49.8MB in the end (delta: 4.5MB). Peak memory consumption was 6.4MB. Max. memory is 16.1GB. [2021-11-23 17:16:52,071 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 73.4MB. Free memory is still 53.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:16:52,072 INFO L158 Benchmark]: CACSL2BoogieTranslator took 262.34ms. Allocated memory is still 73.4MB. Free memory was 54.1MB in the beginning and 43.7MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 17:16:52,073 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.31ms. Allocated memory is still 73.4MB. Free memory was 43.6MB in the beginning and 42.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 17:16:52,075 INFO L158 Benchmark]: Boogie Preprocessor took 25.42ms. Allocated memory is still 73.4MB. Free memory was 42.0MB in the beginning and 41.0MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 17:16:52,077 INFO L158 Benchmark]: RCFGBuilder took 336.10ms. Allocated memory is still 73.4MB. Free memory was 41.0MB in the beginning and 31.5MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 17:16:52,078 INFO L158 Benchmark]: TraceAbstraction took 419.33ms. Allocated memory is still 73.4MB. Free memory was 30.9MB in the beginning and 49.8MB in the end (delta: -18.9MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:16:52,082 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 73.4MB. Free memory is still 53.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 262.34ms. Allocated memory is still 73.4MB. Free memory was 54.1MB in the beginning and 43.7MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.31ms. Allocated memory is still 73.4MB. Free memory was 43.6MB in the beginning and 42.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.42ms. Allocated memory is still 73.4MB. Free memory was 42.0MB in the beginning and 41.0MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 336.10ms. Allocated memory is still 73.4MB. Free memory was 41.0MB in the beginning and 31.5MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 419.33ms. Allocated memory is still 73.4MB. Free memory was 30.9MB in the beginning and 49.8MB in the end (delta: -18.9MB). 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 17:16:52,123 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5641d3eb-a02a-479b-a588-8203856e8c1e/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