./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/xcsp/Dubois-080.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e3d77e-c15d-4827-94e0-5a4ded2e5e7f/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e3d77e-c15d-4827-94e0-5a4ded2e5e7f/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e3d77e-c15d-4827-94e0-5a4ded2e5e7f/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e3d77e-c15d-4827-94e0-5a4ded2e5e7f/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/xcsp/Dubois-080.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e3d77e-c15d-4827-94e0-5a4ded2e5e7f/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e3d77e-c15d-4827-94e0-5a4ded2e5e7f/bin/utaipan-verify-sOmjnqqW8E --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 a4fa2b9c100b5a1fffd01b453507ea3841ddb60b75896d19242716f8e23e40fd --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 04:24:53,009 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 04:24:53,072 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e3d77e-c15d-4827-94e0-5a4ded2e5e7f/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-14 04:24:53,078 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 04:24:53,078 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 04:24:53,105 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 04:24:53,106 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 04:24:53,106 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 04:24:53,107 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 04:24:53,107 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 04:24:53,107 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 04:24:53,107 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 04:24:53,108 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 04:24:53,108 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 04:24:53,108 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 04:24:53,108 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 04:24:53,108 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 04:24:53,108 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 04:24:53,108 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 04:24:53,109 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 04:24:53,109 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 04:24:53,109 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 04:24:53,109 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 04:24:53,110 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 04:24:53,110 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 04:24:53,110 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 04:24:53,110 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 04:24:53,110 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 04:24:53,110 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 04:24:53,110 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 04:24:53,111 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 04:24:53,111 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 04:24:53,111 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 04:24:53,111 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 04:24:53,111 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 04:24:53,111 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 04:24:53,112 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 04:24:53,112 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 04:24:53,112 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:24:53,112 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 04:24:53,112 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 04:24:53,112 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 04:24:53,112 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 04:24:53,113 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 04:24:53,113 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 04:24:53,113 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 04:24:53,113 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 04:24:53,113 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_b9e3d77e-c15d-4827-94e0-5a4ded2e5e7f/bin/utaipan-verify-sOmjnqqW8E 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 -> a4fa2b9c100b5a1fffd01b453507ea3841ddb60b75896d19242716f8e23e40fd [2024-11-14 04:24:53,451 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 04:24:53,461 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 04:24:53,463 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 04:24:53,465 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 04:24:53,465 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 04:24:53,467 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e3d77e-c15d-4827-94e0-5a4ded2e5e7f/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/xcsp/Dubois-080.c Unable to find full path for "g++" [2024-11-14 04:24:55,812 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 04:24:56,404 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 04:24:56,405 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e3d77e-c15d-4827-94e0-5a4ded2e5e7f/sv-benchmarks/c/xcsp/Dubois-080.c [2024-11-14 04:24:56,426 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e3d77e-c15d-4827-94e0-5a4ded2e5e7f/bin/utaipan-verify-sOmjnqqW8E/data/41aaaba36/7057bb5c97c14e02924742587ebe3169/FLAGf20fbba53 [2024-11-14 04:24:56,452 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e3d77e-c15d-4827-94e0-5a4ded2e5e7f/bin/utaipan-verify-sOmjnqqW8E/data/41aaaba36/7057bb5c97c14e02924742587ebe3169 [2024-11-14 04:24:56,456 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 04:24:56,458 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 04:24:56,460 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 04:24:56,460 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 04:24:56,466 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 04:24:56,467 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:24:56" (1/1) ... [2024-11-14 04:24:56,469 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29018643 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:24:56, skipping insertion in model container [2024-11-14 04:24:56,471 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:24:56" (1/1) ... [2024-11-14 04:24:56,556 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 04:24:57,495 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_b9e3d77e-c15d-4827-94e0-5a4ded2e5e7f/sv-benchmarks/c/xcsp/Dubois-080.c[57120,57133] [2024-11-14 04:24:57,573 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:24:57,588 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 04:24:57,890 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_b9e3d77e-c15d-4827-94e0-5a4ded2e5e7f/sv-benchmarks/c/xcsp/Dubois-080.c[57120,57133] [2024-11-14 04:24:57,943 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:24:57,960 INFO L204 MainTranslator]: Completed translation [2024-11-14 04:24:57,961 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:24:57 WrapperNode [2024-11-14 04:24:57,961 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 04:24:57,963 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 04:24:57,963 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 04:24:57,964 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 04:24:57,974 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:24:57" (1/1) ... [2024-11-14 04:24:58,079 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:24:57" (1/1) ... [2024-11-14 04:24:59,189 INFO L138 Inliner]: procedures = 13, calls = 647, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 15936 [2024-11-14 04:24:59,190 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 04:24:59,191 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 04:24:59,192 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 04:24:59,192 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 04:24:59,201 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:24:57" (1/1) ... [2024-11-14 04:24:59,202 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:24:57" (1/1) ... [2024-11-14 04:24:59,521 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:24:57" (1/1) ... [2024-11-14 04:24:59,522 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:24:57" (1/1) ... [2024-11-14 04:24:59,968 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:24:57" (1/1) ... [2024-11-14 04:25:00,206 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:24:57" (1/1) ... [2024-11-14 04:25:00,327 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:24:57" (1/1) ... [2024-11-14 04:25:00,404 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:24:57" (1/1) ... [2024-11-14 04:25:00,769 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 04:25:00,770 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 04:25:00,773 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 04:25:00,773 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 04:25:00,775 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:24:57" (1/1) ... [2024-11-14 04:25:00,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:25:00,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e3d77e-c15d-4827-94e0-5a4ded2e5e7f/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:25:00,918 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e3d77e-c15d-4827-94e0-5a4ded2e5e7f/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 04:25:00,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e3d77e-c15d-4827-94e0-5a4ded2e5e7f/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 04:25:00,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 04:25:00,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 04:25:00,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 04:25:00,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 04:25:00,982 INFO L130 BoogieDeclarations]: Found specification of procedure assume [2024-11-14 04:25:00,982 INFO L138 BoogieDeclarations]: Found implementation of procedure assume [2024-11-14 04:25:01,794 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 04:25:01,797 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 04:25:31,957 INFO L? ?]: Removed 5525 outVars from TransFormulas that were not future-live. [2024-11-14 04:25:31,958 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 04:26:02,941 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 04:26:02,941 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-14 04:26:02,942 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:26:02 BoogieIcfgContainer [2024-11-14 04:26:02,946 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 04:26:02,950 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 04:26:02,950 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 04:26:02,958 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 04:26:02,959 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 04:24:56" (1/3) ... [2024-11-14 04:26:02,960 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73f18df2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:26:02, skipping insertion in model container [2024-11-14 04:26:02,961 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:24:57" (2/3) ... [2024-11-14 04:26:02,961 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73f18df2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:26:02, skipping insertion in model container [2024-11-14 04:26:02,963 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:26:02" (3/3) ... [2024-11-14 04:26:02,964 INFO L112 eAbstractionObserver]: Analyzing ICFG Dubois-080.c [2024-11-14 04:26:02,987 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 04:26:02,991 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG Dubois-080.c that has 2 procedures, 1046 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-11-14 04:26:03,150 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 04:26:03,170 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;@680d5c36, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 04:26:03,172 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-14 04:26:03,184 INFO L276 IsEmpty]: Start isEmpty. Operand has 1046 states, 403 states have (on average 1.0024813895781637) internal successors, (404), 404 states have internal predecessors, (404), 640 states have call successors, (640), 1 states have call predecessors, (640), 1 states have return successors, (640), 640 states have call predecessors, (640), 640 states have call successors, (640) [2024-11-14 04:26:03,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2323 [2024-11-14 04:26:03,447 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:26:03,450 INFO L215 NwaCegarLoop]: trace histogram [640, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:26:03,451 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:26:03,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:26:03,459 INFO L85 PathProgramCache]: Analyzing trace with hash 439659898, now seen corresponding path program 1 times [2024-11-14 04:26:03,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:26:03,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468441867] [2024-11-14 04:26:03,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:26:03,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms