./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/image_filter.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_184a3f06-7f30-4628-8acb-3e5e1fdf6654/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184a3f06-7f30-4628-8acb-3e5e1fdf6654/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_184a3f06-7f30-4628-8acb-3e5e1fdf6654/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184a3f06-7f30-4628-8acb-3e5e1fdf6654/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/image_filter.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184a3f06-7f30-4628-8acb-3e5e1fdf6654/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_184a3f06-7f30-4628-8acb-3e5e1fdf6654/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 7739edac33edee82d3c388da137105adbe48f8f59b0d45074d101ea06edef10e --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 05:14:34,749 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 05:14:34,822 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184a3f06-7f30-4628-8acb-3e5e1fdf6654/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-14 05:14:34,834 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 05:14:34,835 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 05:14:34,876 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 05:14:34,877 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 05:14:34,878 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 05:14:34,879 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 05:14:34,879 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 05:14:34,879 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 05:14:34,879 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 05:14:34,879 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 05:14:34,880 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 05:14:34,880 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 05:14:34,880 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 05:14:34,880 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 05:14:34,882 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 05:14:34,882 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 05:14:34,882 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 05:14:34,882 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 05:14:34,882 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 05:14:34,883 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 05:14:34,883 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 05:14:34,883 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 05:14:34,883 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 05:14:34,883 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 05:14:34,883 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 05:14:34,884 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 05:14:34,884 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 05:14:34,884 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 05:14:34,884 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 05:14:34,884 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 05:14:34,884 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 05:14:34,884 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 05:14:34,884 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 05:14:34,884 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 05:14:34,885 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 05:14:34,885 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 05:14:34,885 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 05:14:34,885 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 05:14:34,885 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 05:14:34,886 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 05:14:34,886 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 05:14:34,886 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 05:14:34,887 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 05:14:34,887 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 05:14:34,887 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_184a3f06-7f30-4628-8acb-3e5e1fdf6654/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 -> 7739edac33edee82d3c388da137105adbe48f8f59b0d45074d101ea06edef10e [2024-11-14 05:14:35,274 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 05:14:35,286 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 05:14:35,290 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 05:14:35,291 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 05:14:35,292 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 05:14:35,294 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184a3f06-7f30-4628-8acb-3e5e1fdf6654/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/float-benchs/image_filter.c Unable to find full path for "g++" [2024-11-14 05:14:37,702 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 05:14:38,122 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 05:14:38,123 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184a3f06-7f30-4628-8acb-3e5e1fdf6654/sv-benchmarks/c/float-benchs/image_filter.c [2024-11-14 05:14:38,135 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184a3f06-7f30-4628-8acb-3e5e1fdf6654/bin/utaipan-verify-sOmjnqqW8E/data/ea0d331e6/891667e30bdf4052af5b5e3c8484a03a/FLAG5b1e3e028 [2024-11-14 05:14:38,155 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184a3f06-7f30-4628-8acb-3e5e1fdf6654/bin/utaipan-verify-sOmjnqqW8E/data/ea0d331e6/891667e30bdf4052af5b5e3c8484a03a [2024-11-14 05:14:38,157 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 05:14:38,159 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 05:14:38,161 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 05:14:38,161 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 05:14:38,167 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 05:14:38,169 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:14:38" (1/1) ... [2024-11-14 05:14:38,170 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3545f2a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:14:38, skipping insertion in model container [2024-11-14 05:14:38,171 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:14:38" (1/1) ... [2024-11-14 05:14:38,212 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 05:14:38,458 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_184a3f06-7f30-4628-8acb-3e5e1fdf6654/sv-benchmarks/c/float-benchs/image_filter.c[564,577] [2024-11-14 05:14:38,563 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 05:14:38,578 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 05:14:38,590 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_184a3f06-7f30-4628-8acb-3e5e1fdf6654/sv-benchmarks/c/float-benchs/image_filter.c[564,577] [2024-11-14 05:14:38,669 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 05:14:38,689 INFO L204 MainTranslator]: Completed translation [2024-11-14 05:14:38,690 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:14:38 WrapperNode [2024-11-14 05:14:38,690 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 05:14:38,691 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 05:14:38,692 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 05:14:38,692 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 05:14:38,701 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:14:38" (1/1) ... [2024-11-14 05:14:38,735 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:14:38" (1/1) ... [2024-11-14 05:14:38,787 INFO L138 Inliner]: procedures = 21, calls = 695, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 567 [2024-11-14 05:14:38,787 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 05:14:38,788 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 05:14:38,789 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 05:14:38,789 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 05:14:38,798 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:14:38" (1/1) ... [2024-11-14 05:14:38,799 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:14:38" (1/1) ... [2024-11-14 05:14:38,813 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:14:38" (1/1) ... [2024-11-14 05:14:38,813 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:14:38" (1/1) ... [2024-11-14 05:14:38,881 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:14:38" (1/1) ... [2024-11-14 05:14:38,896 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:14:38" (1/1) ... [2024-11-14 05:14:38,901 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:14:38" (1/1) ... [2024-11-14 05:14:38,906 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:14:38" (1/1) ... [2024-11-14 05:14:38,916 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 05:14:38,917 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 05:14:38,917 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 05:14:38,918 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 05:14:38,919 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:14:38" (1/1) ... [2024-11-14 05:14:38,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 05:14:38,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184a3f06-7f30-4628-8acb-3e5e1fdf6654/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:14:38,970 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184a3f06-7f30-4628-8acb-3e5e1fdf6654/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 05:14:38,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184a3f06-7f30-4628-8acb-3e5e1fdf6654/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 05:14:39,022 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 05:14:39,022 INFO L130 BoogieDeclarations]: Found specification of procedure sobel [2024-11-14 05:14:39,023 INFO L138 BoogieDeclarations]: Found implementation of procedure sobel [2024-11-14 05:14:39,023 INFO L130 BoogieDeclarations]: Found specification of procedure blur [2024-11-14 05:14:39,023 INFO L138 BoogieDeclarations]: Found implementation of procedure blur [2024-11-14 05:14:39,024 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-14 05:14:39,024 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-14 05:14:39,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 05:14:39,024 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-14 05:14:39,024 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2024-11-14 05:14:39,024 INFO L130 BoogieDeclarations]: Found specification of procedure filter [2024-11-14 05:14:39,024 INFO L138 BoogieDeclarations]: Found implementation of procedure filter [2024-11-14 05:14:39,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2024-11-14 05:14:39,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 05:14:39,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 05:14:39,025 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-14 05:14:39,025 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-14 05:14:39,026 INFO L130 BoogieDeclarations]: Found specification of procedure sobelitereen [2024-11-14 05:14:39,026 INFO L138 BoogieDeclarations]: Found implementation of procedure sobelitereen [2024-11-14 05:14:39,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-14 05:14:39,442 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 05:14:39,445 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 05:14:44,034 INFO L? ?]: Removed 171 outVars from TransFormulas that were not future-live. [2024-11-14 05:14:44,034 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 05:14:44,246 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 05:14:44,247 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-14 05:14:44,247 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:14:44 BoogieIcfgContainer [2024-11-14 05:14:44,250 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 05:14:44,253 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 05:14:44,253 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 05:14:44,260 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 05:14:44,260 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 05:14:38" (1/3) ... [2024-11-14 05:14:44,261 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@648feb39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:14:44, skipping insertion in model container [2024-11-14 05:14:44,262 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:14:38" (2/3) ... [2024-11-14 05:14:44,263 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@648feb39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:14:44, skipping insertion in model container [2024-11-14 05:14:44,263 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:14:44" (3/3) ... [2024-11-14 05:14:44,265 INFO L112 eAbstractionObserver]: Analyzing ICFG image_filter.c [2024-11-14 05:14:44,288 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 05:14:44,290 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG image_filter.c that has 7 procedures, 162 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-14 05:14:44,394 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 05:14:44,418 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;@52cfcd1f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 05:14:44,419 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-14 05:14:44,425 INFO L276 IsEmpty]: Start isEmpty. Operand has 162 states, 82 states have (on average 1.0365853658536586) internal successors, (85), 83 states have internal predecessors, (85), 72 states have call successors, (72), 6 states have call predecessors, (72), 6 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2024-11-14 05:14:44,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1294 [2024-11-14 05:14:44,526 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:14:44,528 INFO L215 NwaCegarLoop]: trace histogram [266, 40, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:14:44,528 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:14:44,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:14:44,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1386627395, now seen corresponding path program 1 times [2024-11-14 05:14:44,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:14:44,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024129146] [2024-11-14 05:14:44,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:14:44,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:14:48,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:14:52,618 INFO L134 CoverageAnalysis]: Checked inductivity of 75744 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 75744 trivial. 0 not checked. [2024-11-14 05:14:52,619 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:14:52,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024129146] [2024-11-14 05:14:52,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024129146] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:14:52,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:14:52,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 05:14:52,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738883250] [2024-11-14 05:14:52,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:14:52,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 05:14:52,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:14:52,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 05:14:52,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:14:52,670 INFO L87 Difference]: Start difference. First operand has 162 states, 82 states have (on average 1.0365853658536586) internal successors, (85), 83 states have internal predecessors, (85), 72 states have call successors, (72), 6 states have call predecessors, (72), 6 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2024-11-14 05:14:55,530 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:14:57,541 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:14:59,097 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:15:00,417 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 05:15:00,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:15:00,418 INFO L93 Difference]: Finished difference Result 216 states and 325 transitions. [2024-11-14 05:15:00,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 05:15:00,421 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) Word has length 1293 [2024-11-14 05:15:00,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:15:00,437 INFO L225 Difference]: With dead ends: 216 [2024-11-14 05:15:00,438 INFO L226 Difference]: Without dead ends: 169 [2024-11-14 05:15:00,441 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:15:00,445 INFO L432 NwaCegarLoop]: 198 mSDtfsCounter, 4 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2024-11-14 05:15:00,445 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 395 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 58 Invalid, 2 Unknown, 0 Unchecked, 7.7s Time] [2024-11-14 05:15:00,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2024-11-14 05:15:00,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 161. [2024-11-14 05:15:00,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 82 states have (on average 1.024390243902439) internal successors, (84), 83 states have internal predecessors, (84), 72 states have call successors, (72), 6 states have call predecessors, (72), 6 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2024-11-14 05:15:00,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 227 transitions. [2024-11-14 05:15:00,553 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 227 transitions. Word has length 1293 [2024-11-14 05:15:00,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:15:00,565 INFO L471 AbstractCegarLoop]: Abstraction has 161 states and 227 transitions. [2024-11-14 05:15:00,565 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2024-11-14 05:15:00,565 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 227 transitions. [2024-11-14 05:15:00,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1871 [2024-11-14 05:15:00,733 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:15:00,734 INFO L215 NwaCegarLoop]: trace histogram [380, 60, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 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 05:15:00,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 05:15:00,735 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:15:00,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:15:00,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1847212695, now seen corresponding path program 1 times [2024-11-14 05:15:00,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:15:00,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924558598] [2024-11-14 05:15:00,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:15:00,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:15:05,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:15:11,044 INFO L134 CoverageAnalysis]: Checked inductivity of 155329 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 155328 trivial. 0 not checked. [2024-11-14 05:15:11,044 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:15:11,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924558598] [2024-11-14 05:15:11,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924558598] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:15:11,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1088617719] [2024-11-14 05:15:11,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:15:11,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:15:11,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184a3f06-7f30-4628-8acb-3e5e1fdf6654/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:15:11,050 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184a3f06-7f30-4628-8acb-3e5e1fdf6654/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:15:11,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_184a3f06-7f30-4628-8acb-3e5e1fdf6654/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-14 05:15:17,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:15:17,559 INFO L255 TraceCheckSpWp]: Trace formula consists of 17322 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 05:15:17,640 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:15:18,040 INFO L134 CoverageAnalysis]: Checked inductivity of 155329 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 155328 trivial. 0 not checked. [2024-11-14 05:15:18,040 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:15:24,677 INFO L134 CoverageAnalysis]: Checked inductivity of 155329 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 155328 trivial. 0 not checked. [2024-11-14 05:15:24,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1088617719] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:15:24,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [305414041] [2024-11-14 05:15:24,738 INFO L159 IcfgInterpreter]: Started Sifa with 122 locations of interest [2024-11-14 05:15:24,739 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:15:24,744 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:15:24,751 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:15:24,751 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:28:50,963 WARN L286 SmtUtils]: Spent 5.40s on a formula simplification that was a NOOP. DAG size: 1798 (called from [L 210] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2024-11-14 05:29:03,681 WARN L286 SmtUtils]: Spent 7.73s on a formula simplification. DAG size of input: 1799 DAG size of output: 1799 (called from [L 210] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm)