./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound2.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_f256d066-2dc7-474d-a67f-1c4d42402d31/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f256d066-2dc7-474d-a67f-1c4d42402d31/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_f256d066-2dc7-474d-a67f-1c4d42402d31/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f256d066-2dc7-474d-a67f-1c4d42402d31/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f256d066-2dc7-474d-a67f-1c4d42402d31/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_f256d066-2dc7-474d-a67f-1c4d42402d31/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 a69d5fb397906cd89c0147a3c54d3ad7658561b03775140fca8816654a2bbc3d --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 16:52:09,077 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 16:52:09,080 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 16:52:09,159 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 16:52:09,160 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 16:52:09,167 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 16:52:09,170 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 16:52:09,174 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 16:52:09,179 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 16:52:09,189 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 16:52:09,191 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 16:52:09,193 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 16:52:09,195 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 16:52:09,199 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 16:52:09,201 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 16:52:09,205 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 16:52:09,213 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 16:52:09,214 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 16:52:09,216 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 16:52:09,220 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 16:52:09,226 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 16:52:09,227 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 16:52:09,232 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 16:52:09,233 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 16:52:09,242 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 16:52:09,242 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 16:52:09,243 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 16:52:09,244 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 16:52:09,245 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 16:52:09,246 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 16:52:09,247 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 16:52:09,248 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 16:52:09,249 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 16:52:09,251 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 16:52:09,253 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 16:52:09,253 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 16:52:09,254 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 16:52:09,254 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 16:52:09,254 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 16:52:09,255 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 16:52:09,256 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 16:52:09,257 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f256d066-2dc7-474d-a67f-1c4d42402d31/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 16:52:09,288 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 16:52:09,289 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 16:52:09,289 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 16:52:09,290 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 16:52:09,291 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 16:52:09,291 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 16:52:09,291 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 16:52:09,291 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 16:52:09,292 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 16:52:09,292 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 16:52:09,292 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 16:52:09,293 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 16:52:09,293 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 16:52:09,293 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 16:52:09,293 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 16:52:09,294 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 16:52:09,294 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 16:52:09,294 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 16:52:09,295 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 16:52:09,296 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 16:52:09,296 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 16:52:09,296 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 16:52:09,297 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 16:52:09,297 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 16:52:09,297 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 16:52:09,297 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 16:52:09,298 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 16:52:09,298 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 16:52:09,298 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 16:52:09,299 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 16:52:09,299 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 16:52:09,299 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 16:52:09,299 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:52:09,300 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 16:52:09,300 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 16:52:09,300 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 16:52:09,301 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 16:52:09,301 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 16:52:09,301 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 16:52:09,301 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 16:52:09,302 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 16:52:09,302 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_f256d066-2dc7-474d-a67f-1c4d42402d31/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f256d066-2dc7-474d-a67f-1c4d42402d31/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a69d5fb397906cd89c0147a3c54d3ad7658561b03775140fca8816654a2bbc3d [2021-11-23 16:52:09,633 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 16:52:09,683 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 16:52:09,686 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 16:52:09,688 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 16:52:09,689 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 16:52:09,690 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f256d066-2dc7-474d-a67f-1c4d42402d31/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound2.c [2021-11-23 16:52:09,818 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f256d066-2dc7-474d-a67f-1c4d42402d31/bin/utaipan-fb15Y9Yzbl/data/f4193faff/bac2683a775d47be9c6af2975fce91f7/FLAG8502645b6 [2021-11-23 16:52:10,383 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 16:52:10,384 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f256d066-2dc7-474d-a67f-1c4d42402d31/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound2.c [2021-11-23 16:52:10,392 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f256d066-2dc7-474d-a67f-1c4d42402d31/bin/utaipan-fb15Y9Yzbl/data/f4193faff/bac2683a775d47be9c6af2975fce91f7/FLAG8502645b6 [2021-11-23 16:52:10,733 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f256d066-2dc7-474d-a67f-1c4d42402d31/bin/utaipan-fb15Y9Yzbl/data/f4193faff/bac2683a775d47be9c6af2975fce91f7 [2021-11-23 16:52:10,736 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 16:52:10,738 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 16:52:10,740 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 16:52:10,740 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 16:52:10,745 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 16:52:10,745 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:52:10" (1/1) ... [2021-11-23 16:52:10,747 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69a3e35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:52:10, skipping insertion in model container [2021-11-23 16:52:10,747 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:52:10" (1/1) ... [2021-11-23 16:52:10,762 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 16:52:10,780 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 16:52:10,978 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_f256d066-2dc7-474d-a67f-1c4d42402d31/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound2.c[597,610] [2021-11-23 16:52:11,014 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:52:11,030 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 16:52:11,053 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_f256d066-2dc7-474d-a67f-1c4d42402d31/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound2.c[597,610] [2021-11-23 16:52:11,082 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:52:11,100 INFO L208 MainTranslator]: Completed translation [2021-11-23 16:52:11,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:52:11 WrapperNode [2021-11-23 16:52:11,101 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 16:52:11,103 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 16:52:11,104 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 16:52:11,104 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 16:52:11,113 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:52:11" (1/1) ... [2021-11-23 16:52:11,123 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:52:11" (1/1) ... [2021-11-23 16:52:11,170 INFO L137 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 54 [2021-11-23 16:52:11,171 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 16:52:11,173 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 16:52:11,173 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 16:52:11,173 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 16:52:11,185 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:52:11" (1/1) ... [2021-11-23 16:52:11,185 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:52:11" (1/1) ... [2021-11-23 16:52:11,202 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:52:11" (1/1) ... [2021-11-23 16:52:11,205 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:52:11" (1/1) ... [2021-11-23 16:52:11,209 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:52:11" (1/1) ... [2021-11-23 16:52:11,222 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:52:11" (1/1) ... [2021-11-23 16:52:11,223 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:52:11" (1/1) ... [2021-11-23 16:52:11,226 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 16:52:11,231 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 16:52:11,231 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 16:52:11,231 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 16:52:11,232 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:52:11" (1/1) ... [2021-11-23 16:52:11,242 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:52:11,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f256d066-2dc7-474d-a67f-1c4d42402d31/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 16:52:11,292 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f256d066-2dc7-474d-a67f-1c4d42402d31/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 16:52:11,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f256d066-2dc7-474d-a67f-1c4d42402d31/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 16:52:11,340 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 16:52:11,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 16:52:11,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 16:52:11,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 16:52:11,341 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-23 16:52:11,341 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-23 16:52:11,420 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 16:52:11,422 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 16:52:11,567 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 16:52:11,589 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 16:52:11,595 INFO L158 Benchmark]: Toolchain (without parser) took 855.72ms. Allocated memory was 88.1MB in the beginning and 109.1MB in the end (delta: 21.0MB). Free memory was 52.9MB in the beginning and 78.9MB in the end (delta: -26.0MB). Peak memory consumption was 17.7MB. Max. memory is 16.1GB. [2021-11-23 16:52:11,596 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 88.1MB. Free memory is still 52.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 16:52:11,598 INFO L158 Benchmark]: CACSL2BoogieTranslator took 361.29ms. Allocated memory is still 88.1MB. Free memory was 52.7MB in the beginning and 42.6MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 16:52:11,599 INFO L158 Benchmark]: Boogie Procedure Inliner took 68.72ms. Allocated memory is still 88.1MB. Free memory was 42.6MB in the beginning and 41.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 16:52:11,600 INFO L158 Benchmark]: Boogie Preprocessor took 53.38ms. Allocated memory is still 88.1MB. Free memory was 41.1MB in the beginning and 40.1MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 16:52:11,601 INFO L158 Benchmark]: RCFGBuilder took 362.38ms. Allocated memory was 88.1MB in the beginning and 109.1MB in the end (delta: 21.0MB). Free memory was 40.0MB in the beginning and 78.9MB in the end (delta: -38.9MB). Peak memory consumption was 5.1MB. Max. memory is 16.1GB. [2021-11-23 16:52:11,607 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 88.1MB. Free memory is still 52.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 361.29ms. Allocated memory is still 88.1MB. Free memory was 52.7MB in the beginning and 42.6MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 68.72ms. Allocated memory is still 88.1MB. Free memory was 42.6MB in the beginning and 41.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 53.38ms. Allocated memory is still 88.1MB. Free memory was 41.1MB in the beginning and 40.1MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 362.38ms. Allocated memory was 88.1MB in the beginning and 109.1MB in the end (delta: 21.0MB). Free memory was 40.0MB in the beginning and 78.9MB in the end (delta: -38.9MB). Peak memory consumption was 5.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.addAll(ImmutableSet.java:313) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-23 16:52:11,667 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f256d066-2dc7-474d-a67f-1c4d42402d31/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_f256d066-2dc7-474d-a67f-1c4d42402d31/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f256d066-2dc7-474d-a67f-1c4d42402d31/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_f256d066-2dc7-474d-a67f-1c4d42402d31/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f256d066-2dc7-474d-a67f-1c4d42402d31/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f256d066-2dc7-474d-a67f-1c4d42402d31/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_f256d066-2dc7-474d-a67f-1c4d42402d31/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 a69d5fb397906cd89c0147a3c54d3ad7658561b03775140fca8816654a2bbc3d --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 16:52:14,546 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 16:52:14,548 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 16:52:14,584 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 16:52:14,584 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 16:52:14,586 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 16:52:14,587 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 16:52:14,590 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 16:52:14,592 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 16:52:14,593 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 16:52:14,594 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 16:52:14,596 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 16:52:14,596 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 16:52:14,598 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 16:52:14,599 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 16:52:14,601 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 16:52:14,602 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 16:52:14,603 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 16:52:14,605 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 16:52:14,607 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 16:52:14,609 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 16:52:14,611 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 16:52:14,612 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 16:52:14,613 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 16:52:14,617 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 16:52:14,618 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 16:52:14,618 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 16:52:14,619 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 16:52:14,620 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 16:52:14,621 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 16:52:14,621 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 16:52:14,622 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 16:52:14,623 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 16:52:14,624 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 16:52:14,625 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 16:52:14,626 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 16:52:14,627 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 16:52:14,627 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 16:52:14,627 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 16:52:14,629 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 16:52:14,629 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 16:52:14,630 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f256d066-2dc7-474d-a67f-1c4d42402d31/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-23 16:52:14,659 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 16:52:14,659 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 16:52:14,660 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 16:52:14,660 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 16:52:14,661 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 16:52:14,661 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 16:52:14,661 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 16:52:14,661 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 16:52:14,662 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 16:52:14,662 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 16:52:14,662 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 16:52:14,662 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 16:52:14,663 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 16:52:14,663 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 16:52:14,663 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 16:52:14,664 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 16:52:14,664 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 16:52:14,664 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 16:52:14,664 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 16:52:14,664 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 16:52:14,664 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 16:52:14,665 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 16:52:14,665 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 16:52:14,665 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 16:52:14,665 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 16:52:14,665 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 16:52:14,666 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 16:52:14,666 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 16:52:14,666 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 16:52:14,666 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:52:14,666 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 16:52:14,667 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 16:52:14,667 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 16:52:14,667 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 16:52:14,667 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 16:52:14,667 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 16:52:14,667 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 16:52:14,668 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 16:52:14,668 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_f256d066-2dc7-474d-a67f-1c4d42402d31/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f256d066-2dc7-474d-a67f-1c4d42402d31/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a69d5fb397906cd89c0147a3c54d3ad7658561b03775140fca8816654a2bbc3d [2021-11-23 16:52:15,163 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 16:52:15,198 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 16:52:15,201 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 16:52:15,202 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 16:52:15,203 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 16:52:15,205 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f256d066-2dc7-474d-a67f-1c4d42402d31/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound2.c [2021-11-23 16:52:15,280 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f256d066-2dc7-474d-a67f-1c4d42402d31/bin/utaipan-fb15Y9Yzbl/data/c553aade7/1cb33d96369c41e4a40d576abb4bdb6a/FLAG0d0126b94 [2021-11-23 16:52:15,982 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 16:52:15,984 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f256d066-2dc7-474d-a67f-1c4d42402d31/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound2.c [2021-11-23 16:52:15,995 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f256d066-2dc7-474d-a67f-1c4d42402d31/bin/utaipan-fb15Y9Yzbl/data/c553aade7/1cb33d96369c41e4a40d576abb4bdb6a/FLAG0d0126b94 [2021-11-23 16:52:16,298 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f256d066-2dc7-474d-a67f-1c4d42402d31/bin/utaipan-fb15Y9Yzbl/data/c553aade7/1cb33d96369c41e4a40d576abb4bdb6a [2021-11-23 16:52:16,301 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 16:52:16,303 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 16:52:16,310 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 16:52:16,310 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 16:52:16,320 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 16:52:16,322 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:52:16" (1/1) ... [2021-11-23 16:52:16,325 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e2bc676 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:52:16, skipping insertion in model container [2021-11-23 16:52:16,326 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:52:16" (1/1) ... [2021-11-23 16:52:16,335 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 16:52:16,361 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 16:52:16,522 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_f256d066-2dc7-474d-a67f-1c4d42402d31/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound2.c[597,610] [2021-11-23 16:52:16,547 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:52:16,561 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 16:52:16,576 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_f256d066-2dc7-474d-a67f-1c4d42402d31/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound2.c[597,610] [2021-11-23 16:52:16,589 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:52:16,606 INFO L208 MainTranslator]: Completed translation [2021-11-23 16:52:16,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:52:16 WrapperNode [2021-11-23 16:52:16,607 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 16:52:16,608 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 16:52:16,609 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 16:52:16,609 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 16:52:16,618 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:52:16" (1/1) ... [2021-11-23 16:52:16,628 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:52:16" (1/1) ... [2021-11-23 16:52:16,699 INFO L137 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 52 [2021-11-23 16:52:16,699 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 16:52:16,700 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 16:52:16,701 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 16:52:16,701 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 16:52:16,709 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:52:16" (1/1) ... [2021-11-23 16:52:16,709 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:52:16" (1/1) ... [2021-11-23 16:52:16,712 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:52:16" (1/1) ... [2021-11-23 16:52:16,712 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:52:16" (1/1) ... [2021-11-23 16:52:16,718 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:52:16" (1/1) ... [2021-11-23 16:52:16,722 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:52:16" (1/1) ... [2021-11-23 16:52:16,724 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:52:16" (1/1) ... [2021-11-23 16:52:16,727 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 16:52:16,728 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 16:52:16,729 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 16:52:16,729 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 16:52:16,730 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:52:16" (1/1) ... [2021-11-23 16:52:16,741 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:52:16,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f256d066-2dc7-474d-a67f-1c4d42402d31/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 16:52:16,777 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f256d066-2dc7-474d-a67f-1c4d42402d31/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 16:52:16,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f256d066-2dc7-474d-a67f-1c4d42402d31/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 16:52:16,832 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 16:52:16,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 16:52:16,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 16:52:16,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 16:52:16,833 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-23 16:52:16,839 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-23 16:52:16,951 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 16:52:16,953 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 16:52:17,649 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 16:52:17,661 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 16:52:17,661 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 16:52:17,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:52:17 BoogieIcfgContainer [2021-11-23 16:52:17,664 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 16:52:17,666 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 16:52:17,666 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 16:52:17,670 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 16:52:17,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 04:52:16" (1/3) ... [2021-11-23 16:52:17,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@299d2581 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:52:17, skipping insertion in model container [2021-11-23 16:52:17,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:52:16" (2/3) ... [2021-11-23 16:52:17,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@299d2581 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:52:17, skipping insertion in model container [2021-11-23 16:52:17,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:52:17" (3/3) ... [2021-11-23 16:52:17,674 INFO L111 eAbstractionObserver]: Analyzing ICFG bresenham-ll_unwindbound2.c [2021-11-23 16:52:17,682 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 16:52:17,682 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 16:52:17,738 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 16:52:17,747 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 16:52:17,747 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 16:52:17,768 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 16:52:17,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-23 16:52:17,773 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:52:17,774 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:52:17,774 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 16:52:17,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:52:17,781 INFO L85 PathProgramCache]: Analyzing trace with hash 180444447, now seen corresponding path program 1 times [2021-11-23 16:52:17,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:52:17,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [451554323] [2021-11-23 16:52:17,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:52:17,798 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:52:17,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f256d066-2dc7-474d-a67f-1c4d42402d31/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:52:17,804 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f256d066-2dc7-474d-a67f-1c4d42402d31/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:52:17,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f256d066-2dc7-474d-a67f-1c4d42402d31/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 16:52:17,855 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f256d066-2dc7-474d-a67f-1c4d42402d31/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 16:52:18,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f256d066-2dc7-474d-a67f-1c4d42402d31/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:52:18,054 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 16:52:18,060 INFO L158 Benchmark]: Toolchain (without parser) took 1755.69ms. Allocated memory is still 62.9MB. Free memory was 42.1MB in the beginning and 26.5MB in the end (delta: 15.6MB). Peak memory consumption was 13.5MB. Max. memory is 16.1GB. [2021-11-23 16:52:18,061 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 62.9MB. Free memory is still 43.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 16:52:18,062 INFO L158 Benchmark]: CACSL2BoogieTranslator took 297.16ms. Allocated memory is still 62.9MB. Free memory was 42.0MB in the beginning and 31.2MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 16:52:18,063 INFO L158 Benchmark]: Boogie Procedure Inliner took 91.38ms. Allocated memory is still 62.9MB. Free memory was 31.2MB in the beginning and 46.0MB in the end (delta: -14.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 16:52:18,064 INFO L158 Benchmark]: Boogie Preprocessor took 27.02ms. Allocated memory is still 62.9MB. Free memory was 46.0MB in the beginning and 44.9MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 16:52:18,065 INFO L158 Benchmark]: RCFGBuilder took 935.51ms. Allocated memory is still 62.9MB. Free memory was 44.9MB in the beginning and 35.0MB in the end (delta: 9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 16:52:18,066 INFO L158 Benchmark]: TraceAbstraction took 392.10ms. Allocated memory is still 62.9MB. Free memory was 34.5MB in the beginning and 26.5MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 16:52:18,070 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 62.9MB. Free memory is still 43.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 297.16ms. Allocated memory is still 62.9MB. Free memory was 42.0MB in the beginning and 31.2MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 91.38ms. Allocated memory is still 62.9MB. Free memory was 31.2MB in the beginning and 46.0MB in the end (delta: -14.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.02ms. Allocated memory is still 62.9MB. Free memory was 46.0MB in the beginning and 44.9MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 935.51ms. Allocated memory is still 62.9MB. Free memory was 44.9MB in the beginning and 35.0MB in the end (delta: 9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 392.10ms. Allocated memory is still 62.9MB. Free memory was 34.5MB in the beginning and 26.5MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. 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 16:52:18,146 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f256d066-2dc7-474d-a67f-1c4d42402d31/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