./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/rule60_list2.c_1.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_d1245277-23ef-43e9-8f30-18231ea25cd6/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1245277-23ef-43e9-8f30-18231ea25cd6/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_d1245277-23ef-43e9-8f30-18231ea25cd6/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1245277-23ef-43e9-8f30-18231ea25cd6/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/rule60_list2.c_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1245277-23ef-43e9-8f30-18231ea25cd6/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_d1245277-23ef-43e9-8f30-18231ea25cd6/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 5dc0e184171498e703ccf08545f4f79d3c1c383c8c0fc13a1f35990befb669a4 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 17:05:13,094 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 17:05:13,097 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 17:05:13,134 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 17:05:13,137 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 17:05:13,142 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 17:05:13,145 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 17:05:13,151 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 17:05:13,155 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 17:05:13,162 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 17:05:13,164 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 17:05:13,166 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 17:05:13,167 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 17:05:13,170 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 17:05:13,173 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 17:05:13,176 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 17:05:13,179 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 17:05:13,180 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 17:05:13,186 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 17:05:13,195 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 17:05:13,197 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 17:05:13,199 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 17:05:13,202 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 17:05:13,204 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 17:05:13,215 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 17:05:13,216 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 17:05:13,216 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 17:05:13,219 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 17:05:13,220 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 17:05:13,222 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 17:05:13,222 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 17:05:13,224 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 17:05:13,226 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 17:05:13,228 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 17:05:13,230 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 17:05:13,230 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 17:05:13,231 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 17:05:13,232 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 17:05:13,232 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 17:05:13,233 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 17:05:13,234 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 17:05:13,236 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1245277-23ef-43e9-8f30-18231ea25cd6/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 17:05:13,289 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 17:05:13,289 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 17:05:13,294 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 17:05:13,294 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 17:05:13,294 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 17:05:13,295 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 17:05:13,295 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 17:05:13,295 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 17:05:13,295 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 17:05:13,296 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 17:05:13,296 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 17:05:13,296 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 17:05:13,296 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 17:05:13,296 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 17:05:13,297 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 17:05:13,297 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 17:05:13,297 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 17:05:13,297 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 17:05:13,298 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 17:05:13,299 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 17:05:13,299 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 17:05:13,299 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 17:05:13,299 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 17:05:13,300 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 17:05:13,300 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 17:05:13,300 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 17:05:13,300 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 17:05:13,301 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 17:05:13,301 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 17:05:13,301 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 17:05:13,301 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 17:05:13,301 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 17:05:13,302 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:05:13,302 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 17:05:13,302 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 17:05:13,302 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 17:05:13,303 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 17:05:13,303 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 17:05:13,303 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 17:05:13,303 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 17:05:13,304 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 17:05:13,304 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_d1245277-23ef-43e9-8f30-18231ea25cd6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1245277-23ef-43e9-8f30-18231ea25cd6/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5dc0e184171498e703ccf08545f4f79d3c1c383c8c0fc13a1f35990befb669a4 [2021-11-23 17:05:13,669 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 17:05:13,717 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 17:05:13,721 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 17:05:13,723 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 17:05:13,724 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 17:05:13,725 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1245277-23ef-43e9-8f30-18231ea25cd6/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/ldv-regression/rule60_list2.c_1.i [2021-11-23 17:05:13,823 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1245277-23ef-43e9-8f30-18231ea25cd6/bin/utaipan-fb15Y9Yzbl/data/bff8b030f/2db0f8e4040a4aa1b20d247aaf019782/FLAGd83f5bcb2 [2021-11-23 17:05:14,504 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 17:05:14,505 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1245277-23ef-43e9-8f30-18231ea25cd6/sv-benchmarks/c/ldv-regression/rule60_list2.c_1.i [2021-11-23 17:05:14,520 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1245277-23ef-43e9-8f30-18231ea25cd6/bin/utaipan-fb15Y9Yzbl/data/bff8b030f/2db0f8e4040a4aa1b20d247aaf019782/FLAGd83f5bcb2 [2021-11-23 17:05:14,824 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1245277-23ef-43e9-8f30-18231ea25cd6/bin/utaipan-fb15Y9Yzbl/data/bff8b030f/2db0f8e4040a4aa1b20d247aaf019782 [2021-11-23 17:05:14,827 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 17:05:14,830 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 17:05:14,836 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 17:05:14,836 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 17:05:14,840 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 17:05:14,841 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:05:14" (1/1) ... [2021-11-23 17:05:14,844 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f11ea35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:05:14, skipping insertion in model container [2021-11-23 17:05:14,844 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:05:14" (1/1) ... [2021-11-23 17:05:14,853 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 17:05:14,928 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:05:15,159 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_d1245277-23ef-43e9-8f30-18231ea25cd6/sv-benchmarks/c/ldv-regression/rule60_list2.c_1.i[296,309] [2021-11-23 17:05:15,370 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:05:15,381 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 17:05:15,396 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_d1245277-23ef-43e9-8f30-18231ea25cd6/sv-benchmarks/c/ldv-regression/rule60_list2.c_1.i[296,309] [2021-11-23 17:05:15,427 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:05:15,467 INFO L208 MainTranslator]: Completed translation [2021-11-23 17:05:15,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:05:15 WrapperNode [2021-11-23 17:05:15,468 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 17:05:15,469 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 17:05:15,469 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 17:05:15,470 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 17:05:15,479 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:05:15" (1/1) ... [2021-11-23 17:05:15,496 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:05:15" (1/1) ... [2021-11-23 17:05:15,527 INFO L137 Inliner]: procedures = 126, calls = 20, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 54 [2021-11-23 17:05:15,528 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 17:05:15,529 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 17:05:15,529 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 17:05:15,530 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 17:05:15,541 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:05:15" (1/1) ... [2021-11-23 17:05:15,541 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:05:15" (1/1) ... [2021-11-23 17:05:15,566 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:05:15" (1/1) ... [2021-11-23 17:05:15,567 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:05:15" (1/1) ... [2021-11-23 17:05:15,572 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:05:15" (1/1) ... [2021-11-23 17:05:15,580 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:05:15" (1/1) ... [2021-11-23 17:05:15,582 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:05:15" (1/1) ... [2021-11-23 17:05:15,592 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 17:05:15,593 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 17:05:15,593 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 17:05:15,594 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 17:05:15,595 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:05:15" (1/1) ... [2021-11-23 17:05:15,615 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:05:15,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1245277-23ef-43e9-8f30-18231ea25cd6/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:05:15,653 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1245277-23ef-43e9-8f30-18231ea25cd6/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 17:05:15,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1245277-23ef-43e9-8f30-18231ea25cd6/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 17:05:15,722 INFO L130 BoogieDeclarations]: Found specification of procedure my_malloc [2021-11-23 17:05:15,722 INFO L138 BoogieDeclarations]: Found implementation of procedure my_malloc [2021-11-23 17:05:15,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 17:05:15,723 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2021-11-23 17:05:15,723 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2021-11-23 17:05:15,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 17:05:15,724 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2021-11-23 17:05:15,724 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2021-11-23 17:05:15,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 17:05:15,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 17:05:15,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 17:05:15,857 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 17:05:15,859 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 17:05:16,105 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 17:05:16,155 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$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-23 17:05:16,172 INFO L158 Benchmark]: Toolchain (without parser) took 1340.07ms. Allocated memory was 100.7MB in the beginning and 153.1MB in the end (delta: 52.4MB). Free memory was 67.8MB in the beginning and 105.4MB in the end (delta: -37.6MB). Peak memory consumption was 12.1MB. Max. memory is 16.1GB. [2021-11-23 17:05:16,173 INFO L158 Benchmark]: CDTParser took 0.96ms. Allocated memory is still 100.7MB. Free memory was 57.8MB in the beginning and 57.8MB in the end (delta: 47.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:05:16,174 INFO L158 Benchmark]: CACSL2BoogieTranslator took 632.13ms. Allocated memory was 100.7MB in the beginning and 153.1MB in the end (delta: 52.4MB). Free memory was 67.6MB in the beginning and 120.1MB in the end (delta: -52.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-23 17:05:16,175 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.07ms. Allocated memory is still 153.1MB. Free memory was 120.1MB in the beginning and 118.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 17:05:16,183 INFO L158 Benchmark]: Boogie Preprocessor took 63.34ms. Allocated memory is still 153.1MB. Free memory was 118.6MB in the beginning and 117.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:05:16,184 INFO L158 Benchmark]: RCFGBuilder took 575.76ms. Allocated memory is still 153.1MB. Free memory was 117.3MB in the beginning and 105.4MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-23 17:05:16,189 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.96ms. Allocated memory is still 100.7MB. Free memory was 57.8MB in the beginning and 57.8MB in the end (delta: 47.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 632.13ms. Allocated memory was 100.7MB in the beginning and 153.1MB in the end (delta: 52.4MB). Free memory was 67.6MB in the beginning and 120.1MB in the end (delta: -52.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.07ms. Allocated memory is still 153.1MB. Free memory was 120.1MB in the beginning and 118.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 63.34ms. Allocated memory is still 153.1MB. Free memory was 118.6MB in the beginning and 117.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 575.76ms. Allocated memory is still 153.1MB. Free memory was 117.3MB in the beginning and 105.4MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. 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 17:05:16,233 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1245277-23ef-43e9-8f30-18231ea25cd6/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_d1245277-23ef-43e9-8f30-18231ea25cd6/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1245277-23ef-43e9-8f30-18231ea25cd6/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_d1245277-23ef-43e9-8f30-18231ea25cd6/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1245277-23ef-43e9-8f30-18231ea25cd6/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/rule60_list2.c_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1245277-23ef-43e9-8f30-18231ea25cd6/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_d1245277-23ef-43e9-8f30-18231ea25cd6/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 5dc0e184171498e703ccf08545f4f79d3c1c383c8c0fc13a1f35990befb669a4 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 17:05:19,201 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 17:05:19,205 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 17:05:19,251 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 17:05:19,252 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 17:05:19,257 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 17:05:19,262 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 17:05:19,269 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 17:05:19,274 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 17:05:19,284 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 17:05:19,285 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 17:05:19,287 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 17:05:19,289 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 17:05:19,292 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 17:05:19,295 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 17:05:19,299 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 17:05:19,302 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 17:05:19,303 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 17:05:19,309 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 17:05:19,323 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 17:05:19,326 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 17:05:19,328 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 17:05:19,331 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 17:05:19,334 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 17:05:19,345 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 17:05:19,346 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 17:05:19,346 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 17:05:19,349 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 17:05:19,350 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 17:05:19,352 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 17:05:19,352 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 17:05:19,354 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 17:05:19,356 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 17:05:19,358 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 17:05:19,360 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 17:05:19,360 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 17:05:19,385 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 17:05:19,386 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 17:05:19,386 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 17:05:19,388 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 17:05:19,390 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 17:05:19,396 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1245277-23ef-43e9-8f30-18231ea25cd6/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-23 17:05:19,452 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 17:05:19,453 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 17:05:19,454 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 17:05:19,454 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 17:05:19,455 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 17:05:19,456 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 17:05:19,456 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 17:05:19,457 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 17:05:19,457 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 17:05:19,457 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 17:05:19,459 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 17:05:19,459 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 17:05:19,461 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 17:05:19,462 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 17:05:19,462 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 17:05:19,463 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 17:05:19,463 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 17:05:19,463 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 17:05:19,464 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 17:05:19,464 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 17:05:19,464 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 17:05:19,465 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 17:05:19,465 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 17:05:19,465 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 17:05:19,466 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 17:05:19,466 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 17:05:19,467 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 17:05:19,467 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 17:05:19,467 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 17:05:19,468 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:05:19,468 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 17:05:19,468 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 17:05:19,469 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 17:05:19,470 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 17:05:19,470 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 17:05:19,470 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 17:05:19,471 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 17:05:19,471 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 17:05:19,472 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_d1245277-23ef-43e9-8f30-18231ea25cd6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1245277-23ef-43e9-8f30-18231ea25cd6/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5dc0e184171498e703ccf08545f4f79d3c1c383c8c0fc13a1f35990befb669a4 [2021-11-23 17:05:19,915 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 17:05:19,950 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 17:05:19,954 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 17:05:19,956 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 17:05:19,957 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 17:05:19,959 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1245277-23ef-43e9-8f30-18231ea25cd6/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/ldv-regression/rule60_list2.c_1.i [2021-11-23 17:05:20,042 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1245277-23ef-43e9-8f30-18231ea25cd6/bin/utaipan-fb15Y9Yzbl/data/fc6e2df91/4e7a188caaff49fa90aa04a47c1e0009/FLAG05fa08bdc [2021-11-23 17:05:20,794 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 17:05:20,795 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1245277-23ef-43e9-8f30-18231ea25cd6/sv-benchmarks/c/ldv-regression/rule60_list2.c_1.i [2021-11-23 17:05:20,827 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1245277-23ef-43e9-8f30-18231ea25cd6/bin/utaipan-fb15Y9Yzbl/data/fc6e2df91/4e7a188caaff49fa90aa04a47c1e0009/FLAG05fa08bdc [2021-11-23 17:05:21,088 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1245277-23ef-43e9-8f30-18231ea25cd6/bin/utaipan-fb15Y9Yzbl/data/fc6e2df91/4e7a188caaff49fa90aa04a47c1e0009 [2021-11-23 17:05:21,093 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 17:05:21,096 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 17:05:21,100 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 17:05:21,100 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 17:05:21,105 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 17:05:21,107 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:05:21" (1/1) ... [2021-11-23 17:05:21,108 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6971d76c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:05:21, skipping insertion in model container [2021-11-23 17:05:21,109 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:05:21" (1/1) ... [2021-11-23 17:05:21,118 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 17:05:21,192 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:05:21,427 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_d1245277-23ef-43e9-8f30-18231ea25cd6/sv-benchmarks/c/ldv-regression/rule60_list2.c_1.i[296,309] [2021-11-23 17:05:21,701 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:05:21,723 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 17:05:21,746 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_d1245277-23ef-43e9-8f30-18231ea25cd6/sv-benchmarks/c/ldv-regression/rule60_list2.c_1.i[296,309] [2021-11-23 17:05:21,809 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:05:21,858 INFO L208 MainTranslator]: Completed translation [2021-11-23 17:05:21,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:05:21 WrapperNode [2021-11-23 17:05:21,859 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 17:05:21,861 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 17:05:21,861 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 17:05:21,861 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 17:05:21,870 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:05:21" (1/1) ... [2021-11-23 17:05:21,892 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:05:21" (1/1) ... [2021-11-23 17:05:21,917 INFO L137 Inliner]: procedures = 127, calls = 20, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 54 [2021-11-23 17:05:21,917 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 17:05:21,918 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 17:05:21,919 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 17:05:21,919 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 17:05:21,929 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:05:21" (1/1) ... [2021-11-23 17:05:21,929 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:05:21" (1/1) ... [2021-11-23 17:05:21,933 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:05:21" (1/1) ... [2021-11-23 17:05:21,934 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:05:21" (1/1) ... [2021-11-23 17:05:21,942 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:05:21" (1/1) ... [2021-11-23 17:05:21,945 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:05:21" (1/1) ... [2021-11-23 17:05:21,947 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:05:21" (1/1) ... [2021-11-23 17:05:21,952 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 17:05:21,953 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 17:05:21,953 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 17:05:21,953 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 17:05:21,954 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:05:21" (1/1) ... [2021-11-23 17:05:21,963 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:05:21,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1245277-23ef-43e9-8f30-18231ea25cd6/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:05:22,005 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1245277-23ef-43e9-8f30-18231ea25cd6/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 17:05:22,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1245277-23ef-43e9-8f30-18231ea25cd6/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 17:05:22,062 INFO L130 BoogieDeclarations]: Found specification of procedure my_malloc [2021-11-23 17:05:22,062 INFO L138 BoogieDeclarations]: Found implementation of procedure my_malloc [2021-11-23 17:05:22,063 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 17:05:22,063 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2021-11-23 17:05:22,063 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2021-11-23 17:05:22,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 17:05:22,063 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2021-11-23 17:05:22,064 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2021-11-23 17:05:22,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 17:05:22,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 17:05:22,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 17:05:22,238 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 17:05:22,240 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 17:05:22,461 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 17:05:22,469 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 17:05:22,469 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 17:05:22,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:05:22 BoogieIcfgContainer [2021-11-23 17:05:22,472 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 17:05:22,474 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 17:05:22,474 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 17:05:22,478 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 17:05:22,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 05:05:21" (1/3) ... [2021-11-23 17:05:22,479 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@320964bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:05:22, skipping insertion in model container [2021-11-23 17:05:22,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:05:21" (2/3) ... [2021-11-23 17:05:22,479 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@320964bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:05:22, skipping insertion in model container [2021-11-23 17:05:22,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:05:22" (3/3) ... [2021-11-23 17:05:22,481 INFO L111 eAbstractionObserver]: Analyzing ICFG rule60_list2.c_1.i [2021-11-23 17:05:22,504 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 17:05:22,504 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 17:05:22,604 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 17:05:22,625 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 17:05:22,625 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 17:05:22,660 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 27 states have internal predecessors, (30), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-23 17:05:22,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-23 17:05:22,667 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:05:22,668 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:05:22,669 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 17:05:22,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:05:22,677 INFO L85 PathProgramCache]: Analyzing trace with hash -432214362, now seen corresponding path program 1 times [2021-11-23 17:05:22,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:05:22,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1543138265] [2021-11-23 17:05:22,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:05:22,696 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:05:22,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1245277-23ef-43e9-8f30-18231ea25cd6/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:05:22,703 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1245277-23ef-43e9-8f30-18231ea25cd6/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:05:22,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1245277-23ef-43e9-8f30-18231ea25cd6/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 17:05:22,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1245277-23ef-43e9-8f30-18231ea25cd6/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 17:05:23,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1245277-23ef-43e9-8f30-18231ea25cd6/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:05:23,011 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$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-23 17:05:23,016 INFO L158 Benchmark]: Toolchain (without parser) took 1919.20ms. Allocated memory is still 75.5MB. Free memory was 60.0MB in the beginning and 51.9MB in the end (delta: 8.0MB). Peak memory consumption was 8.7MB. Max. memory is 16.1GB. [2021-11-23 17:05:23,016 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 75.5MB. Free memory is still 55.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:05:23,017 INFO L158 Benchmark]: CACSL2BoogieTranslator took 759.60ms. Allocated memory is still 75.5MB. Free memory was 59.7MB in the beginning and 52.2MB in the end (delta: 7.5MB). Peak memory consumption was 11.2MB. Max. memory is 16.1GB. [2021-11-23 17:05:23,018 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.05ms. Allocated memory is still 75.5MB. Free memory was 52.2MB in the beginning and 50.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 17:05:23,019 INFO L158 Benchmark]: Boogie Preprocessor took 33.52ms. Allocated memory is still 75.5MB. Free memory was 50.4MB in the beginning and 48.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 17:05:23,020 INFO L158 Benchmark]: RCFGBuilder took 519.24ms. Allocated memory is still 75.5MB. Free memory was 48.8MB in the beginning and 37.6MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 17:05:23,021 INFO L158 Benchmark]: TraceAbstraction took 540.06ms. Allocated memory is still 75.5MB. Free memory was 37.2MB in the beginning and 51.9MB in the end (delta: -14.8MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:05:23,025 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 75.5MB. Free memory is still 55.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 759.60ms. Allocated memory is still 75.5MB. Free memory was 59.7MB in the beginning and 52.2MB in the end (delta: 7.5MB). Peak memory consumption was 11.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.05ms. Allocated memory is still 75.5MB. Free memory was 52.2MB in the beginning and 50.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.52ms. Allocated memory is still 75.5MB. Free memory was 50.4MB in the beginning and 48.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 519.24ms. Allocated memory is still 75.5MB. Free memory was 48.8MB in the beginning and 37.6MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 540.06ms. Allocated memory is still 75.5MB. Free memory was 37.2MB in the beginning and 51.9MB in the end (delta: -14.8MB). 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 17:05:23,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1245277-23ef-43e9-8f30-18231ea25cd6/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