./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/xcsp/Dubois-085.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_3555143d-fa94-4fe6-83a3-583a0e08563a/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3555143d-fa94-4fe6-83a3-583a0e08563a/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_3555143d-fa94-4fe6-83a3-583a0e08563a/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3555143d-fa94-4fe6-83a3-583a0e08563a/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/xcsp/Dubois-085.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3555143d-fa94-4fe6-83a3-583a0e08563a/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_3555143d-fa94-4fe6-83a3-583a0e08563a/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 49f2f14ce67a65f5a0fd11896e258d0c61002fa750203719f83d9c45bcadd833 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 23:46:24,942 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 23:46:25,020 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3555143d-fa94-4fe6-83a3-583a0e08563a/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-13 23:46:25,025 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 23:46:25,025 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 23:46:25,055 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 23:46:25,055 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 23:46:25,055 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 23:46:25,056 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 23:46:25,056 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 23:46:25,056 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-13 23:46:25,056 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-13 23:46:25,056 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-13 23:46:25,056 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-13 23:46:25,057 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-13 23:46:25,057 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-13 23:46:25,057 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-13 23:46:25,057 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-13 23:46:25,057 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-13 23:46:25,057 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-13 23:46:25,057 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-13 23:46:25,059 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-13 23:46:25,060 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 23:46:25,060 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 23:46:25,061 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 23:46:25,061 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 23:46:25,061 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 23:46:25,061 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 23:46:25,061 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 23:46:25,061 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 23:46:25,061 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 23:46:25,061 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 23:46:25,062 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 23:46:25,062 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 23:46:25,062 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 23:46:25,062 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 23:46:25,062 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 23:46:25,062 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 23:46:25,063 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-13 23:46:25,063 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 23:46:25,063 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 23:46:25,063 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 23:46:25,063 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-13 23:46:25,063 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 23:46:25,064 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 23:46:25,064 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-13 23:46:25,064 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 23:46:25,064 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_3555143d-fa94-4fe6-83a3-583a0e08563a/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 -> 49f2f14ce67a65f5a0fd11896e258d0c61002fa750203719f83d9c45bcadd833 [2024-11-13 23:46:25,414 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 23:46:25,424 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 23:46:25,427 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 23:46:25,430 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 23:46:25,430 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 23:46:25,432 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3555143d-fa94-4fe6-83a3-583a0e08563a/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/xcsp/Dubois-085.c Unable to find full path for "g++" [2024-11-13 23:46:27,236 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 23:46:27,678 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 23:46:27,682 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3555143d-fa94-4fe6-83a3-583a0e08563a/sv-benchmarks/c/xcsp/Dubois-085.c [2024-11-13 23:46:27,701 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3555143d-fa94-4fe6-83a3-583a0e08563a/bin/utaipan-verify-sOmjnqqW8E/data/3f4d706c7/f0a189af65bc4f33a601a592d894fc05/FLAG53658f2d8 [2024-11-13 23:46:27,823 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3555143d-fa94-4fe6-83a3-583a0e08563a/bin/utaipan-verify-sOmjnqqW8E/data/3f4d706c7/f0a189af65bc4f33a601a592d894fc05 [2024-11-13 23:46:27,825 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 23:46:27,826 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 23:46:27,829 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 23:46:27,830 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 23:46:27,834 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 23:46:27,838 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 11:46:27" (1/1) ... [2024-11-13 23:46:27,840 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@656dcaee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:46:27, skipping insertion in model container [2024-11-13 23:46:27,841 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 11:46:27" (1/1) ... [2024-11-13 23:46:27,902 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 23:46:28,581 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_3555143d-fa94-4fe6-83a3-583a0e08563a/sv-benchmarks/c/xcsp/Dubois-085.c[60720,60733] [2024-11-13 23:46:28,637 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 23:46:28,649 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 23:46:28,960 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_3555143d-fa94-4fe6-83a3-583a0e08563a/sv-benchmarks/c/xcsp/Dubois-085.c[60720,60733] [2024-11-13 23:46:28,984 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 23:46:28,998 INFO L204 MainTranslator]: Completed translation [2024-11-13 23:46:28,999 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:46:28 WrapperNode [2024-11-13 23:46:28,999 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 23:46:29,000 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 23:46:29,000 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 23:46:29,000 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 23:46:29,007 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:46:28" (1/1) ... [2024-11-13 23:46:29,086 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:46:28" (1/1) ... [2024-11-13 23:46:30,072 INFO L138 Inliner]: procedures = 13, calls = 687, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 16931 [2024-11-13 23:46:30,073 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 23:46:30,074 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 23:46:30,074 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 23:46:30,074 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 23:46:30,082 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:46:28" (1/1) ... [2024-11-13 23:46:30,082 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:46:28" (1/1) ... [2024-11-13 23:46:30,238 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:46:28" (1/1) ... [2024-11-13 23:46:30,238 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:46:28" (1/1) ... [2024-11-13 23:46:30,743 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:46:28" (1/1) ... [2024-11-13 23:46:30,895 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:46:28" (1/1) ... [2024-11-13 23:46:30,956 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:46:28" (1/1) ... [2024-11-13 23:46:31,031 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:46:28" (1/1) ... [2024-11-13 23:46:31,241 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 23:46:31,242 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 23:46:31,242 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 23:46:31,242 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 23:46:31,243 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:46:28" (1/1) ... [2024-11-13 23:46:31,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-13 23:46:31,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3555143d-fa94-4fe6-83a3-583a0e08563a/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-13 23:46:31,413 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3555143d-fa94-4fe6-83a3-583a0e08563a/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-13 23:46:31,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3555143d-fa94-4fe6-83a3-583a0e08563a/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-13 23:46:31,510 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 23:46:31,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 23:46:31,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 23:46:31,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-13 23:46:31,510 INFO L130 BoogieDeclarations]: Found specification of procedure assume [2024-11-13 23:46:31,510 INFO L138 BoogieDeclarations]: Found implementation of procedure assume [2024-11-13 23:46:32,201 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 23:46:32,204 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 23:46:58,478 INFO L? ?]: Removed 5870 outVars from TransFormulas that were not future-live. [2024-11-13 23:46:58,479 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 23:47:25,607 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 23:47:25,607 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-13 23:47:25,608 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 11:47:25 BoogieIcfgContainer [2024-11-13 23:47:25,608 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 23:47:25,610 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 23:47:25,610 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 23:47:25,615 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 23:47:25,615 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 11:46:27" (1/3) ... [2024-11-13 23:47:25,616 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@466b2797 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 11:47:25, skipping insertion in model container [2024-11-13 23:47:25,616 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 11:46:28" (2/3) ... [2024-11-13 23:47:25,616 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@466b2797 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 11:47:25, skipping insertion in model container [2024-11-13 23:47:25,616 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 11:47:25" (3/3) ... [2024-11-13 23:47:25,618 INFO L112 eAbstractionObserver]: Analyzing ICFG Dubois-085.c [2024-11-13 23:47:25,634 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 23:47:25,636 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG Dubois-085.c that has 2 procedures, 1111 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-11-13 23:47:25,733 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 23:47:25,746 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;@133a885, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 23:47:25,746 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 23:47:25,759 INFO L276 IsEmpty]: Start isEmpty. Operand has 1111 states, 428 states have (on average 1.0023364485981308) internal successors, (429), 429 states have internal predecessors, (429), 680 states have call successors, (680), 1 states have call predecessors, (680), 1 states have return successors, (680), 680 states have call predecessors, (680), 680 states have call successors, (680) [2024-11-13 23:47:26,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2468 [2024-11-13 23:47:26,003 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 23:47:26,005 INFO L215 NwaCegarLoop]: trace histogram [680, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2024-11-13 23:47:26,006 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 23:47:26,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 23:47:26,013 INFO L85 PathProgramCache]: Analyzing trace with hash 531876791, now seen corresponding path program 1 times [2024-11-13 23:47:26,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-13 23:47:26,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417077118] [2024-11-13 23:47:26,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 23:47:26,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms