./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/test29-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b57b3cb-beb7-4053-a444-1325184f62d3/bin/utaipan-verify-FOvIYxoinp/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b57b3cb-beb7-4053-a444-1325184f62d3/bin/utaipan-verify-FOvIYxoinp/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b57b3cb-beb7-4053-a444-1325184f62d3/bin/utaipan-verify-FOvIYxoinp/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b57b3cb-beb7-4053-a444-1325184f62d3/bin/utaipan-verify-FOvIYxoinp/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/test29-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b57b3cb-beb7-4053-a444-1325184f62d3/bin/utaipan-verify-FOvIYxoinp/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b57b3cb-beb7-4053-a444-1325184f62d3/bin/utaipan-verify-FOvIYxoinp --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 787d3b2fa11dec769df3d46659aa468e143e27411fdb13355e30ec6b3ce36b2e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 20:30:16,037 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 20:30:16,191 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b57b3cb-beb7-4053-a444-1325184f62d3/bin/utaipan-verify-FOvIYxoinp/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-06 20:30:16,204 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 20:30:16,205 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 20:30:16,245 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 20:30:16,246 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 20:30:16,247 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 20:30:16,248 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 20:30:16,249 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 20:30:16,249 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-06 20:30:16,250 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-06 20:30:16,251 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-06 20:30:16,252 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-06 20:30:16,252 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-06 20:30:16,253 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-06 20:30:16,254 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-06 20:30:16,255 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-06 20:30:16,255 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-06 20:30:16,256 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-06 20:30:16,257 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-06 20:30:16,258 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-06 20:30:16,258 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 20:30:16,259 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 20:30:16,260 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 20:30:16,260 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 20:30:16,261 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 20:30:16,262 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 20:30:16,262 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 20:30:16,263 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 20:30:16,264 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 20:30:16,265 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 20:30:16,265 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 20:30:16,265 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 20:30:16,266 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 20:30:16,266 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 20:30:16,266 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 20:30:16,267 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 20:30:16,267 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 20:30:16,267 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 20:30:16,268 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-06 20:30:16,268 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 20:30:16,268 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 20:30:16,269 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-06 20:30:16,269 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 20:30:16,270 INFO L153 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_9b57b3cb-beb7-4053-a444-1325184f62d3/bin/utaipan-verify-FOvIYxoinp/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b57b3cb-beb7-4053-a444-1325184f62d3/bin/utaipan-verify-FOvIYxoinp Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 787d3b2fa11dec769df3d46659aa468e143e27411fdb13355e30ec6b3ce36b2e [2023-11-06 20:30:16,594 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 20:30:16,637 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 20:30:16,640 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 20:30:16,642 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 20:30:16,642 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 20:30:16,645 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b57b3cb-beb7-4053-a444-1325184f62d3/bin/utaipan-verify-FOvIYxoinp/../../sv-benchmarks/c/ldv-regression/test29-1.c [2023-11-06 20:30:19,865 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 20:30:20,076 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 20:30:20,076 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b57b3cb-beb7-4053-a444-1325184f62d3/sv-benchmarks/c/ldv-regression/test29-1.c [2023-11-06 20:30:20,083 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b57b3cb-beb7-4053-a444-1325184f62d3/bin/utaipan-verify-FOvIYxoinp/data/de3849d89/26d3588e5aa248a48619df213ecdd2aa/FLAG1f949a71b [2023-11-06 20:30:20,103 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b57b3cb-beb7-4053-a444-1325184f62d3/bin/utaipan-verify-FOvIYxoinp/data/de3849d89/26d3588e5aa248a48619df213ecdd2aa [2023-11-06 20:30:20,113 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 20:30:20,115 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 20:30:20,117 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 20:30:20,118 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 20:30:20,124 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 20:30:20,125 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:30:20" (1/1) ... [2023-11-06 20:30:20,126 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@418b5be4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:30:20, skipping insertion in model container [2023-11-06 20:30:20,127 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:30:20" (1/1) ... [2023-11-06 20:30:20,155 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 20:30:20,370 WARN L240 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_9b57b3cb-beb7-4053-a444-1325184f62d3/sv-benchmarks/c/ldv-regression/test29-1.c[614,627] [2023-11-06 20:30:20,377 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 20:30:20,389 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 20:30:20,412 WARN L240 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_9b57b3cb-beb7-4053-a444-1325184f62d3/sv-benchmarks/c/ldv-regression/test29-1.c[614,627] [2023-11-06 20:30:20,413 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 20:30:20,430 INFO L206 MainTranslator]: Completed translation [2023-11-06 20:30:20,431 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:30:20 WrapperNode [2023-11-06 20:30:20,431 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 20:30:20,432 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 20:30:20,432 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 20:30:20,433 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 20:30:20,441 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:30:20" (1/1) ... [2023-11-06 20:30:20,450 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:30:20" (1/1) ... [2023-11-06 20:30:20,476 INFO L138 Inliner]: procedures = 13, calls = 19, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 52 [2023-11-06 20:30:20,477 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 20:30:20,478 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 20:30:20,478 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 20:30:20,478 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 20:30:20,488 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:30:20" (1/1) ... [2023-11-06 20:30:20,489 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:30:20" (1/1) ... [2023-11-06 20:30:20,502 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:30:20" (1/1) ... [2023-11-06 20:30:20,503 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:30:20" (1/1) ... [2023-11-06 20:30:20,509 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:30:20" (1/1) ... [2023-11-06 20:30:20,511 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:30:20" (1/1) ... [2023-11-06 20:30:20,512 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:30:20" (1/1) ... [2023-11-06 20:30:20,513 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:30:20" (1/1) ... [2023-11-06 20:30:20,516 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 20:30:20,517 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 20:30:20,517 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 20:30:20,517 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 20:30:20,518 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:30:20" (1/1) ... [2023-11-06 20:30:20,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 20:30:20,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b57b3cb-beb7-4053-a444-1325184f62d3/bin/utaipan-verify-FOvIYxoinp/z3 [2023-11-06 20:30:20,555 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b57b3cb-beb7-4053-a444-1325184f62d3/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 20:30:20,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b57b3cb-beb7-4053-a444-1325184f62d3/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 20:30:20,590 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 20:30:20,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 20:30:20,591 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 20:30:20,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 20:30:20,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 20:30:20,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 20:30:20,591 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 20:30:20,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 20:30:20,661 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 20:30:20,663 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 20:30:20,789 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 20:30:20,879 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 20:30:20,879 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 20:30:20,883 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:30:20 BoogieIcfgContainer [2023-11-06 20:30:20,883 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 20:30:20,886 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 20:30:20,887 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 20:30:20,891 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 20:30:20,891 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 08:30:20" (1/3) ... [2023-11-06 20:30:20,892 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16e04070 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:30:20, skipping insertion in model container [2023-11-06 20:30:20,893 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:30:20" (2/3) ... [2023-11-06 20:30:20,893 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16e04070 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:30:20, skipping insertion in model container [2023-11-06 20:30:20,894 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:30:20" (3/3) ... [2023-11-06 20:30:20,895 INFO L112 eAbstractionObserver]: Analyzing ICFG test29-1.c [2023-11-06 20:30:20,942 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 20:30:20,942 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 20:30:21,001 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 20:30:21,010 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@223f3f9a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-06 20:30:21,011 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 20:30:21,045 INFO L276 IsEmpty]: Start isEmpty. Operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:30:21,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-06 20:30:21,052 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:30:21,053 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-06 20:30:21,054 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 20:30:21,060 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:30:21,061 INFO L85 PathProgramCache]: Analyzing trace with hash 62084, now seen corresponding path program 1 times [2023-11-06 20:30:21,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-06 20:30:21,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661832659] [2023-11-06 20:30:21,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:30:21,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 20:30:21,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 20:30:21,218 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 20:30:21,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 20:30:21,264 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-06 20:30:21,266 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 20:30:21,268 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-06 20:30:21,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 20:30:21,275 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-06 20:30:21,281 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 20:30:21,304 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 08:30:21 BoogieIcfgContainer [2023-11-06 20:30:21,304 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 20:30:21,305 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 20:30:21,306 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 20:30:21,306 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 20:30:21,307 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:30:20" (3/4) ... [2023-11-06 20:30:21,308 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-06 20:30:21,348 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b57b3cb-beb7-4053-a444-1325184f62d3/bin/utaipan-verify-FOvIYxoinp/witness.graphml.graphml [2023-11-06 20:30:21,348 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 20:30:21,349 INFO L158 Benchmark]: Toolchain (without parser) took 1234.07ms. Allocated memory is still 176.2MB. Free memory was 132.0MB in the beginning and 135.3MB in the end (delta: -3.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 20:30:21,350 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 115.3MB. Free memory was 83.0MB in the beginning and 83.0MB in the end (delta: 34.0kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 20:30:21,351 INFO L158 Benchmark]: CACSL2BoogieTranslator took 313.85ms. Allocated memory is still 176.2MB. Free memory was 132.0MB in the beginning and 122.1MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-06 20:30:21,352 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.86ms. Allocated memory is still 176.2MB. Free memory was 121.6MB in the beginning and 120.4MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 20:30:21,352 INFO L158 Benchmark]: Boogie Preprocessor took 38.42ms. Allocated memory is still 176.2MB. Free memory was 120.4MB in the beginning and 119.3MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 20:30:21,353 INFO L158 Benchmark]: RCFGBuilder took 366.25ms. Allocated memory is still 176.2MB. Free memory was 119.3MB in the beginning and 105.4MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-06 20:30:21,354 INFO L158 Benchmark]: TraceAbstraction took 418.18ms. Allocated memory is still 176.2MB. Free memory was 104.8MB in the beginning and 136.4MB in the end (delta: -31.6MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 20:30:21,355 INFO L158 Benchmark]: Witness Printer took 42.71ms. Allocated memory is still 176.2MB. Free memory was 136.4MB in the beginning and 135.3MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 20:30:21,358 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 115.3MB. Free memory was 83.0MB in the beginning and 83.0MB in the end (delta: 34.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 313.85ms. Allocated memory is still 176.2MB. Free memory was 132.0MB in the beginning and 122.1MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.86ms. Allocated memory is still 176.2MB. Free memory was 121.6MB in the beginning and 120.4MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.42ms. Allocated memory is still 176.2MB. Free memory was 120.4MB in the beginning and 119.3MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 366.25ms. Allocated memory is still 176.2MB. Free memory was 119.3MB in the beginning and 105.4MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 418.18ms. Allocated memory is still 176.2MB. Free memory was 104.8MB in the beginning and 136.4MB in the end (delta: -31.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 42.71ms. Allocated memory is still 176.2MB. Free memory was 136.4MB in the beginning and 135.3MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 30]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L15] union dummy d1, d2; [L16] int n = __VERIFIER_nondet_int(); [L17] union dummy *pd = n ? &d1 : &d2; [L18] d1.a = __VERIFIER_nondet_int() [L19] COND FALSE !(pd == &d1) [L22] pd->b = 0 [L24] pd == &d2 && d1.a != 0 [L24] EXPR d1.a [L24] pd == &d2 && d1.a != 0 VAL [d1.a=-1, d1={6:0}, d2={5:0}, n=0, pd == &d2 && d1.a != 0=1, pd={5:0}] [L24] COND TRUE pd == &d2 && d1.a != 0 [L30] reach_error() VAL [d1={6:0}, d2={5:0}, n=0, pd={5:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-11-06 20:30:21,390 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b57b3cb-beb7-4053-a444-1325184f62d3/bin/utaipan-verify-FOvIYxoinp/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE