./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/xcsp/Haystacks-07.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_291fae38-8390-4460-ab09-dd930f8c3867/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291fae38-8390-4460-ab09-dd930f8c3867/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_291fae38-8390-4460-ab09-dd930f8c3867/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291fae38-8390-4460-ab09-dd930f8c3867/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/xcsp/Haystacks-07.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291fae38-8390-4460-ab09-dd930f8c3867/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_291fae38-8390-4460-ab09-dd930f8c3867/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 37cca93bb7dc8cf168b28f2ca23bfa0068547531ceecfc239eae366d82d628a0 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 16:44:49,113 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 16:44:49,117 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 16:44:49,173 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 16:44:49,174 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 16:44:49,178 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 16:44:49,180 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 16:44:49,184 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 16:44:49,187 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 16:44:49,193 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 16:44:49,194 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 16:44:49,196 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 16:44:49,197 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 16:44:49,200 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 16:44:49,202 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 16:44:49,210 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 16:44:49,212 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 16:44:49,213 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 16:44:49,216 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 16:44:49,224 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 16:44:49,226 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 16:44:49,227 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 16:44:49,231 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 16:44:49,232 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 16:44:49,241 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 16:44:49,242 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 16:44:49,242 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 16:44:49,245 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 16:44:49,246 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 16:44:49,247 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 16:44:49,248 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 16:44:49,249 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 16:44:49,251 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 16:44:49,252 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 16:44:49,254 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 16:44:49,255 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 16:44:49,255 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 16:44:49,256 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 16:44:49,256 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 16:44:49,257 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 16:44:49,258 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 16:44:49,259 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291fae38-8390-4460-ab09-dd930f8c3867/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 16:44:49,304 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 16:44:49,305 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 16:44:49,305 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 16:44:49,306 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 16:44:49,307 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 16:44:49,307 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 16:44:49,307 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 16:44:49,307 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 16:44:49,308 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 16:44:49,308 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 16:44:49,309 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 16:44:49,309 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 16:44:49,310 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 16:44:49,310 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 16:44:49,310 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 16:44:49,310 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 16:44:49,311 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 16:44:49,311 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 16:44:49,312 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 16:44:49,312 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 16:44:49,312 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 16:44:49,312 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 16:44:49,313 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 16:44:49,313 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 16:44:49,313 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 16:44:49,313 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 16:44:49,315 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 16:44:49,315 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 16:44:49,316 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 16:44:49,316 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 16:44:49,316 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 16:44:49,316 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 16:44:49,317 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:44:49,317 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 16:44:49,317 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 16:44:49,318 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 16:44:49,318 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 16:44:49,318 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 16:44:49,318 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 16:44:49,318 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 16:44:49,319 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 16:44:49,319 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_291fae38-8390-4460-ab09-dd930f8c3867/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291fae38-8390-4460-ab09-dd930f8c3867/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 37cca93bb7dc8cf168b28f2ca23bfa0068547531ceecfc239eae366d82d628a0 [2021-11-23 16:44:49,646 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 16:44:49,667 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 16:44:49,670 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 16:44:49,672 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 16:44:49,672 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 16:44:49,674 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291fae38-8390-4460-ab09-dd930f8c3867/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/xcsp/Haystacks-07.c [2021-11-23 16:44:49,752 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291fae38-8390-4460-ab09-dd930f8c3867/bin/utaipan-fb15Y9Yzbl/data/9a90d3dbd/acb20f39de4e4092ae758f0536cdf05e/FLAGa386abea1 [2021-11-23 16:44:50,360 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 16:44:50,376 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291fae38-8390-4460-ab09-dd930f8c3867/sv-benchmarks/c/xcsp/Haystacks-07.c [2021-11-23 16:44:50,397 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291fae38-8390-4460-ab09-dd930f8c3867/bin/utaipan-fb15Y9Yzbl/data/9a90d3dbd/acb20f39de4e4092ae758f0536cdf05e/FLAGa386abea1 [2021-11-23 16:44:50,650 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291fae38-8390-4460-ab09-dd930f8c3867/bin/utaipan-fb15Y9Yzbl/data/9a90d3dbd/acb20f39de4e4092ae758f0536cdf05e [2021-11-23 16:44:50,653 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 16:44:50,655 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 16:44:50,656 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 16:44:50,657 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 16:44:50,660 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 16:44:50,661 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:44:50" (1/1) ... [2021-11-23 16:44:50,662 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74955a71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:44:50, skipping insertion in model container [2021-11-23 16:44:50,663 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:44:50" (1/1) ... [2021-11-23 16:44:50,670 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 16:44:50,709 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 16:44:51,010 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_291fae38-8390-4460-ab09-dd930f8c3867/sv-benchmarks/c/xcsp/Haystacks-07.c[11507,11520] [2021-11-23 16:44:51,018 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:44:51,038 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 16:44:51,132 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_291fae38-8390-4460-ab09-dd930f8c3867/sv-benchmarks/c/xcsp/Haystacks-07.c[11507,11520] [2021-11-23 16:44:51,136 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:44:51,149 INFO L208 MainTranslator]: Completed translation [2021-11-23 16:44:51,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:44:51 WrapperNode [2021-11-23 16:44:51,149 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 16:44:51,151 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 16:44:51,151 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 16:44:51,151 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 16:44:51,159 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:44:51" (1/1) ... [2021-11-23 16:44:51,178 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:44:51" (1/1) ... [2021-11-23 16:44:51,234 INFO L137 Inliner]: procedures = 13, calls = 294, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 500 [2021-11-23 16:44:51,235 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 16:44:51,236 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 16:44:51,236 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 16:44:51,236 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 16:44:51,245 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:44:51" (1/1) ... [2021-11-23 16:44:51,245 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:44:51" (1/1) ... [2021-11-23 16:44:51,251 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:44:51" (1/1) ... [2021-11-23 16:44:51,251 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:44:51" (1/1) ... [2021-11-23 16:44:51,267 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:44:51" (1/1) ... [2021-11-23 16:44:51,274 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:44:51" (1/1) ... [2021-11-23 16:44:51,285 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:44:51" (1/1) ... [2021-11-23 16:44:51,290 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 16:44:51,291 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 16:44:51,291 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 16:44:51,291 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 16:44:51,300 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:44:51" (1/1) ... [2021-11-23 16:44:51,310 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:44:51,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291fae38-8390-4460-ab09-dd930f8c3867/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 16:44:51,332 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291fae38-8390-4460-ab09-dd930f8c3867/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 16:44:51,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291fae38-8390-4460-ab09-dd930f8c3867/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 16:44:51,392 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 16:44:51,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 16:44:51,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 16:44:51,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 16:44:51,393 INFO L130 BoogieDeclarations]: Found specification of procedure assume [2021-11-23 16:44:51,394 INFO L138 BoogieDeclarations]: Found implementation of procedure assume [2021-11-23 16:44:51,509 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 16:44:51,511 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 16:44:52,217 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 16:44:52,254 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 16:44:52,264 INFO L158 Benchmark]: Toolchain (without parser) took 1607.05ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 55.8MB in the beginning and 75.1MB in the end (delta: -19.3MB). Peak memory consumption was 29.0MB. Max. memory is 16.1GB. [2021-11-23 16:44:52,266 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 90.2MB. Free memory was 63.1MB in the beginning and 63.0MB in the end (delta: 27.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 16:44:52,267 INFO L158 Benchmark]: CACSL2BoogieTranslator took 493.42ms. Allocated memory is still 90.2MB. Free memory was 55.4MB in the beginning and 60.1MB in the end (delta: -4.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 16:44:52,268 INFO L158 Benchmark]: Boogie Procedure Inliner took 84.47ms. Allocated memory is still 90.2MB. Free memory was 60.1MB in the beginning and 56.3MB in the end (delta: 3.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 16:44:52,270 INFO L158 Benchmark]: Boogie Preprocessor took 54.00ms. Allocated memory is still 90.2MB. Free memory was 56.3MB in the beginning and 54.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 16:44:52,271 INFO L158 Benchmark]: RCFGBuilder took 970.41ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 54.2MB in the beginning and 75.1MB in the end (delta: -20.9MB). Peak memory consumption was 29.5MB. Max. memory is 16.1GB. [2021-11-23 16:44:52,280 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 90.2MB. Free memory was 63.1MB in the beginning and 63.0MB in the end (delta: 27.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 493.42ms. Allocated memory is still 90.2MB. Free memory was 55.4MB in the beginning and 60.1MB in the end (delta: -4.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 84.47ms. Allocated memory is still 90.2MB. Free memory was 60.1MB in the beginning and 56.3MB in the end (delta: 3.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.00ms. Allocated memory is still 90.2MB. Free memory was 56.3MB in the beginning and 54.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 970.41ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 54.2MB in the beginning and 75.1MB in the end (delta: -20.9MB). Peak memory consumption was 29.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.addAll(ImmutableSet.java:313) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-23 16:44:52,313 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291fae38-8390-4460-ab09-dd930f8c3867/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_291fae38-8390-4460-ab09-dd930f8c3867/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291fae38-8390-4460-ab09-dd930f8c3867/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_291fae38-8390-4460-ab09-dd930f8c3867/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291fae38-8390-4460-ab09-dd930f8c3867/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/xcsp/Haystacks-07.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291fae38-8390-4460-ab09-dd930f8c3867/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_291fae38-8390-4460-ab09-dd930f8c3867/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 37cca93bb7dc8cf168b28f2ca23bfa0068547531ceecfc239eae366d82d628a0 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 16:44:54,737 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 16:44:54,741 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 16:44:54,796 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 16:44:54,796 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 16:44:54,801 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 16:44:54,803 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 16:44:54,807 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 16:44:54,811 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 16:44:54,819 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 16:44:54,820 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 16:44:54,822 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 16:44:54,823 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 16:44:54,826 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 16:44:54,828 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 16:44:54,832 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 16:44:54,834 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 16:44:54,835 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 16:44:54,837 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 16:44:54,845 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 16:44:54,847 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 16:44:54,849 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 16:44:54,852 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 16:44:54,854 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 16:44:54,863 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 16:44:54,864 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 16:44:54,864 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 16:44:54,866 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 16:44:54,867 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 16:44:54,868 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 16:44:54,868 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 16:44:54,869 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 16:44:54,871 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 16:44:54,872 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 16:44:54,874 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 16:44:54,874 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 16:44:54,875 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 16:44:54,876 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 16:44:54,876 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 16:44:54,878 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 16:44:54,879 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 16:44:54,884 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291fae38-8390-4460-ab09-dd930f8c3867/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-23 16:44:54,928 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 16:44:54,929 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 16:44:54,929 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 16:44:54,929 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 16:44:54,930 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 16:44:54,931 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 16:44:54,931 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 16:44:54,931 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 16:44:54,931 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 16:44:54,931 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 16:44:54,932 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 16:44:54,933 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 16:44:54,934 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 16:44:54,934 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 16:44:54,935 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 16:44:54,935 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 16:44:54,935 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 16:44:54,935 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 16:44:54,935 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 16:44:54,936 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 16:44:54,936 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 16:44:54,936 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 16:44:54,936 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 16:44:54,936 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 16:44:54,936 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 16:44:54,937 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 16:44:54,937 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 16:44:54,937 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 16:44:54,937 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 16:44:54,937 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:44:54,938 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 16:44:54,938 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 16:44:54,938 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 16:44:54,939 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 16:44:54,939 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 16:44:54,939 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 16:44:54,939 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 16:44:54,940 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 16:44:54,940 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_291fae38-8390-4460-ab09-dd930f8c3867/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291fae38-8390-4460-ab09-dd930f8c3867/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 37cca93bb7dc8cf168b28f2ca23bfa0068547531ceecfc239eae366d82d628a0 [2021-11-23 16:44:55,333 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 16:44:55,364 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 16:44:55,368 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 16:44:55,369 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 16:44:55,370 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 16:44:55,371 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291fae38-8390-4460-ab09-dd930f8c3867/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/xcsp/Haystacks-07.c [2021-11-23 16:44:55,441 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291fae38-8390-4460-ab09-dd930f8c3867/bin/utaipan-fb15Y9Yzbl/data/b11b3272d/3a9d91ccbfee4fd4992317379e36d96f/FLAG2cbb094fc [2021-11-23 16:44:56,095 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 16:44:56,096 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291fae38-8390-4460-ab09-dd930f8c3867/sv-benchmarks/c/xcsp/Haystacks-07.c [2021-11-23 16:44:56,106 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291fae38-8390-4460-ab09-dd930f8c3867/bin/utaipan-fb15Y9Yzbl/data/b11b3272d/3a9d91ccbfee4fd4992317379e36d96f/FLAG2cbb094fc [2021-11-23 16:44:56,375 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291fae38-8390-4460-ab09-dd930f8c3867/bin/utaipan-fb15Y9Yzbl/data/b11b3272d/3a9d91ccbfee4fd4992317379e36d96f [2021-11-23 16:44:56,377 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 16:44:56,380 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 16:44:56,381 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 16:44:56,381 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 16:44:56,387 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 16:44:56,388 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:44:56" (1/1) ... [2021-11-23 16:44:56,390 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a89ed37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:44:56, skipping insertion in model container [2021-11-23 16:44:56,390 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:44:56" (1/1) ... [2021-11-23 16:44:56,398 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 16:44:56,455 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 16:44:56,710 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_291fae38-8390-4460-ab09-dd930f8c3867/sv-benchmarks/c/xcsp/Haystacks-07.c[11507,11520] [2021-11-23 16:44:56,744 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:44:56,790 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 16:44:56,908 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_291fae38-8390-4460-ab09-dd930f8c3867/sv-benchmarks/c/xcsp/Haystacks-07.c[11507,11520] [2021-11-23 16:44:56,914 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:44:56,933 INFO L208 MainTranslator]: Completed translation [2021-11-23 16:44:56,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:44:56 WrapperNode [2021-11-23 16:44:56,934 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 16:44:56,936 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 16:44:56,936 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 16:44:56,936 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 16:44:56,944 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:44:56" (1/1) ... [2021-11-23 16:44:56,983 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:44:56" (1/1) ... [2021-11-23 16:44:57,055 INFO L137 Inliner]: procedures = 13, calls = 294, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 451 [2021-11-23 16:44:57,056 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 16:44:57,057 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 16:44:57,057 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 16:44:57,057 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 16:44:57,067 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:44:56" (1/1) ... [2021-11-23 16:44:57,067 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:44:56" (1/1) ... [2021-11-23 16:44:57,074 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:44:56" (1/1) ... [2021-11-23 16:44:57,074 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:44:56" (1/1) ... [2021-11-23 16:44:57,091 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:44:56" (1/1) ... [2021-11-23 16:44:57,094 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:44:56" (1/1) ... [2021-11-23 16:44:57,098 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:44:56" (1/1) ... [2021-11-23 16:44:57,103 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 16:44:57,105 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 16:44:57,105 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 16:44:57,105 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 16:44:57,106 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:44:56" (1/1) ... [2021-11-23 16:44:57,114 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:44:57,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291fae38-8390-4460-ab09-dd930f8c3867/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 16:44:57,170 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291fae38-8390-4460-ab09-dd930f8c3867/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 16:44:57,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291fae38-8390-4460-ab09-dd930f8c3867/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 16:44:57,219 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 16:44:57,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 16:44:57,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 16:44:57,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 16:44:57,219 INFO L130 BoogieDeclarations]: Found specification of procedure assume [2021-11-23 16:44:57,219 INFO L138 BoogieDeclarations]: Found implementation of procedure assume [2021-11-23 16:44:57,309 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 16:44:57,311 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 16:44:57,983 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 16:44:58,006 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 16:44:58,006 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 16:44:58,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:44:58 BoogieIcfgContainer [2021-11-23 16:44:58,008 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 16:44:58,010 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 16:44:58,010 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 16:44:58,015 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 16:44:58,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 04:44:56" (1/3) ... [2021-11-23 16:44:58,016 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20147316 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:44:58, skipping insertion in model container [2021-11-23 16:44:58,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:44:56" (2/3) ... [2021-11-23 16:44:58,017 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20147316 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:44:58, skipping insertion in model container [2021-11-23 16:44:58,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:44:58" (3/3) ... [2021-11-23 16:44:58,018 INFO L111 eAbstractionObserver]: Analyzing ICFG Haystacks-07.c [2021-11-23 16:44:58,024 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 16:44:58,024 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 16:44:58,098 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 16:44:58,108 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 16:44:58,109 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 16:44:58,185 INFO L276 IsEmpty]: Start isEmpty. Operand has 347 states, 57 states have (on average 1.0350877192982457) internal successors, (59), 58 states have internal predecessors, (59), 287 states have call successors, (287), 1 states have call predecessors, (287), 1 states have return successors, (287), 287 states have call predecessors, (287), 287 states have call successors, (287) [2021-11-23 16:44:58,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1488 [2021-11-23 16:44:58,338 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:44:58,340 INFO L514 BasicCegarLoop]: trace histogram [287, 287, 287, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:44:58,341 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 16:44:58,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:44:58,347 INFO L85 PathProgramCache]: Analyzing trace with hash 726037940, now seen corresponding path program 1 times [2021-11-23 16:44:58,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:44:58,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [775963041] [2021-11-23 16:44:58,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:44:58,367 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:44:58,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291fae38-8390-4460-ab09-dd930f8c3867/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:44:58,372 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291fae38-8390-4460-ab09-dd930f8c3867/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:44:58,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291fae38-8390-4460-ab09-dd930f8c3867/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 16:44:58,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291fae38-8390-4460-ab09-dd930f8c3867/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 16:44:58,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291fae38-8390-4460-ab09-dd930f8c3867/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:44:58,626 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 16:44:58,630 INFO L158 Benchmark]: Toolchain (without parser) took 2250.31ms. Allocated memory was 62.9MB in the beginning and 86.0MB in the end (delta: 23.1MB). Free memory was 42.7MB in the beginning and 55.3MB in the end (delta: -12.6MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2021-11-23 16:44:58,631 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 62.9MB. Free memory is still 44.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 16:44:58,632 INFO L158 Benchmark]: CACSL2BoogieTranslator took 553.35ms. Allocated memory was 62.9MB in the beginning and 86.0MB in the end (delta: 23.1MB). Free memory was 42.4MB in the beginning and 63.7MB in the end (delta: -21.3MB). Peak memory consumption was 14.3MB. Max. memory is 16.1GB. [2021-11-23 16:44:58,632 INFO L158 Benchmark]: Boogie Procedure Inliner took 120.61ms. Allocated memory is still 86.0MB. Free memory was 63.7MB in the beginning and 59.8MB in the end (delta: 3.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 16:44:58,633 INFO L158 Benchmark]: Boogie Preprocessor took 46.85ms. Allocated memory is still 86.0MB. Free memory was 59.8MB in the beginning and 57.2MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 16:44:58,635 INFO L158 Benchmark]: RCFGBuilder took 903.95ms. Allocated memory is still 86.0MB. Free memory was 57.2MB in the beginning and 48.4MB in the end (delta: 8.8MB). Peak memory consumption was 15.6MB. Max. memory is 16.1GB. [2021-11-23 16:44:58,640 INFO L158 Benchmark]: TraceAbstraction took 618.54ms. Allocated memory is still 86.0MB. Free memory was 47.7MB in the beginning and 55.7MB in the end (delta: -8.0MB). Peak memory consumption was 12.1MB. Max. memory is 16.1GB. [2021-11-23 16:44:58,643 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 62.9MB. Free memory is still 44.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 553.35ms. Allocated memory was 62.9MB in the beginning and 86.0MB in the end (delta: 23.1MB). Free memory was 42.4MB in the beginning and 63.7MB in the end (delta: -21.3MB). Peak memory consumption was 14.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 120.61ms. Allocated memory is still 86.0MB. Free memory was 63.7MB in the beginning and 59.8MB in the end (delta: 3.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.85ms. Allocated memory is still 86.0MB. Free memory was 59.8MB in the beginning and 57.2MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 903.95ms. Allocated memory is still 86.0MB. Free memory was 57.2MB in the beginning and 48.4MB in the end (delta: 8.8MB). Peak memory consumption was 15.6MB. Max. memory is 16.1GB. * TraceAbstraction took 618.54ms. Allocated memory is still 86.0MB. Free memory was 47.7MB in the beginning and 55.7MB in the end (delta: -8.0MB). Peak memory consumption was 12.1MB. 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 16:44:58,685 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_291fae38-8390-4460-ab09-dd930f8c3867/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