./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/xcsp/Dubois-030.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2954251-7620-4d0a-ba90-e4f158e3b8f4/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2954251-7620-4d0a-ba90-e4f158e3b8f4/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2954251-7620-4d0a-ba90-e4f158e3b8f4/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2954251-7620-4d0a-ba90-e4f158e3b8f4/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/xcsp/Dubois-030.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2954251-7620-4d0a-ba90-e4f158e3b8f4/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2954251-7620-4d0a-ba90-e4f158e3b8f4/bin/utaipan-verify-YMUCfTKeje --witnessprinter.witness.filename witness --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 f8bdc872c5ed6c7e0dbc38b05ab7b9d01b9923069718666e7e19722e23b3300c --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 05:23:18,233 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 05:23:18,338 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2954251-7620-4d0a-ba90-e4f158e3b8f4/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-09 05:23:18,347 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 05:23:18,349 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 05:23:18,385 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 05:23:18,385 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 05:23:18,386 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 05:23:18,387 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 05:23:18,387 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 05:23:18,387 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 05:23:18,388 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 05:23:18,388 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 05:23:18,391 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 05:23:18,392 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 05:23:18,392 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 05:23:18,393 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 05:23:18,394 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 05:23:18,394 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 05:23:18,394 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 05:23:18,395 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 05:23:18,398 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 05:23:18,398 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 05:23:18,399 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 05:23:18,399 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 05:23:18,399 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 05:23:18,399 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 05:23:18,400 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 05:23:18,400 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 05:23:18,400 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 05:23:18,402 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 05:23:18,402 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 05:23:18,402 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 05:23:18,402 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 05:23:18,403 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 05:23:18,403 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 05:23:18,403 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 05:23:18,403 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 05:23:18,403 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:23:18,404 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 05:23:18,404 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 05:23:18,404 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 05:23:18,405 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 05:23:18,405 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 05:23:18,405 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 05:23:18,405 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 05:23:18,406 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 05:23:18,406 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_a2954251-7620-4d0a-ba90-e4f158e3b8f4/bin/utaipan-verify-YMUCfTKeje/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2954251-7620-4d0a-ba90-e4f158e3b8f4/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f8bdc872c5ed6c7e0dbc38b05ab7b9d01b9923069718666e7e19722e23b3300c [2024-11-09 05:23:18,718 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 05:23:18,752 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 05:23:18,757 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 05:23:18,759 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 05:23:18,760 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 05:23:18,762 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2954251-7620-4d0a-ba90-e4f158e3b8f4/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/xcsp/Dubois-030.c Unable to find full path for "g++" [2024-11-09 05:23:20,788 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 05:23:21,098 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 05:23:21,099 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2954251-7620-4d0a-ba90-e4f158e3b8f4/sv-benchmarks/c/xcsp/Dubois-030.c [2024-11-09 05:23:21,112 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2954251-7620-4d0a-ba90-e4f158e3b8f4/bin/utaipan-verify-YMUCfTKeje/data/2697906ce/89c02b2386d1400a99919dd661ac4561/FLAGa135cc948 [2024-11-09 05:23:21,133 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2954251-7620-4d0a-ba90-e4f158e3b8f4/bin/utaipan-verify-YMUCfTKeje/data/2697906ce/89c02b2386d1400a99919dd661ac4561 [2024-11-09 05:23:21,137 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 05:23:21,138 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 05:23:21,140 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 05:23:21,140 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 05:23:21,148 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 05:23:21,149 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:23:21" (1/1) ... [2024-11-09 05:23:21,150 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7304c1ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:23:21, skipping insertion in model container [2024-11-09 05:23:21,150 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:23:21" (1/1) ... [2024-11-09 05:23:21,219 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 05:23:21,661 WARN L250 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_a2954251-7620-4d0a-ba90-e4f158e3b8f4/sv-benchmarks/c/xcsp/Dubois-030.c[21240,21253] [2024-11-09 05:23:21,699 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:23:21,714 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 05:23:21,857 WARN L250 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_a2954251-7620-4d0a-ba90-e4f158e3b8f4/sv-benchmarks/c/xcsp/Dubois-030.c[21240,21253] [2024-11-09 05:23:21,868 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:23:21,887 INFO L204 MainTranslator]: Completed translation [2024-11-09 05:23:21,888 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:23:21 WrapperNode [2024-11-09 05:23:21,888 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 05:23:21,889 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 05:23:21,890 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 05:23:21,890 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 05:23:21,898 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:23:21" (1/1) ... [2024-11-09 05:23:21,956 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:23:21" (1/1) ... [2024-11-09 05:23:22,384 INFO L138 Inliner]: procedures = 13, calls = 247, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 5986 [2024-11-09 05:23:22,384 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 05:23:22,385 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 05:23:22,385 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 05:23:22,385 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 05:23:22,399 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:23:21" (1/1) ... [2024-11-09 05:23:22,402 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:23:21" (1/1) ... [2024-11-09 05:23:22,559 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:23:21" (1/1) ... [2024-11-09 05:23:22,559 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:23:21" (1/1) ... [2024-11-09 05:23:22,676 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:23:21" (1/1) ... [2024-11-09 05:23:22,723 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:23:21" (1/1) ... [2024-11-09 05:23:22,748 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:23:21" (1/1) ... [2024-11-09 05:23:22,769 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:23:21" (1/1) ... [2024-11-09 05:23:22,860 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 05:23:22,862 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 05:23:22,863 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 05:23:22,863 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 05:23:22,864 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:23:21" (1/1) ... [2024-11-09 05:23:22,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:23:22,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2954251-7620-4d0a-ba90-e4f158e3b8f4/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:23:22,908 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2954251-7620-4d0a-ba90-e4f158e3b8f4/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 05:23:22,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2954251-7620-4d0a-ba90-e4f158e3b8f4/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 05:23:22,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 05:23:22,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 05:23:22,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 05:23:22,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 05:23:22,946 INFO L130 BoogieDeclarations]: Found specification of procedure assume [2024-11-09 05:23:22,946 INFO L138 BoogieDeclarations]: Found implementation of procedure assume [2024-11-09 05:23:23,265 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 05:23:23,268 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 05:23:30,182 INFO L? ?]: Removed 2075 outVars from TransFormulas that were not future-live. [2024-11-09 05:23:30,182 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 05:23:38,896 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 05:23:38,896 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 05:23:38,897 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:23:38 BoogieIcfgContainer [2024-11-09 05:23:38,897 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 05:23:38,900 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 05:23:38,900 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 05:23:38,904 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 05:23:38,904 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 05:23:21" (1/3) ... [2024-11-09 05:23:38,905 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@93c5387 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:23:38, skipping insertion in model container [2024-11-09 05:23:38,905 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:23:21" (2/3) ... [2024-11-09 05:23:38,905 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@93c5387 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:23:38, skipping insertion in model container [2024-11-09 05:23:38,905 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:23:38" (3/3) ... [2024-11-09 05:23:38,907 INFO L112 eAbstractionObserver]: Analyzing ICFG Dubois-030.c [2024-11-09 05:23:38,930 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 05:23:38,931 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 05:23:39,025 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 05:23:39,033 INFO L333 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, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@7313608c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 05:23:39,034 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 05:23:39,039 INFO L276 IsEmpty]: Start isEmpty. Operand has 396 states, 153 states have (on average 1.0065359477124183) internal successors, (154), 154 states have internal predecessors, (154), 240 states have call successors, (240), 1 states have call predecessors, (240), 1 states have return successors, (240), 240 states have call predecessors, (240), 240 states have call successors, (240) [2024-11-09 05:23:39,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 873 [2024-11-09 05:23:39,100 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:23:39,102 INFO L215 NwaCegarLoop]: trace histogram [240, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:23:39,103 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:23:39,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:23:39,110 INFO L85 PathProgramCache]: Analyzing trace with hash -750737270, now seen corresponding path program 1 times [2024-11-09 05:23:39,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:23:39,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297966185] [2024-11-09 05:23:39,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:23:39,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:23:54,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat